Soldering jobs

I have a consumer-electronics board that combines both surface-mount and through-hole parts and now needs full turnkey assembly. I will supply the BOM, centroid/PnP file, and all component datasheets. What I need from you is the complete build—sourcing any missing passives, mounting every device, soldering, cleaning, and functional testing—so the boards arrive production-ready. Key points you should know: • Component mix is roughly 80 % SMD (0402–QFN) and 20 % through-hole, so the job will require automated pick-and-place with reflow plus a secondary wave or selective-solder pass. • different Board size, two layer FR-4, lead-free finish. Typical run will be 50 prototypes, scaling to 1 000 if the initial batch passes. • I expect optical inspect...

My PlayStation 5 is out of warranty and no longer sends a stable picture to the TV— the screen flickers or shows nothing at all. I suspect the HDMI port is the culprit, but I can’t t...shows nothing at all. I suspect the HDMI port is the culprit, but I can’t tell whether there’s any obvious physical damage just by looking. I need someone experienced in PS5 hardware repair to remove the faulty HDMI port, install a new one, and verify that 4K video and audio pass through perfectly once the console is reassembled. Please supply the replacement port, carry out clean, lead-free soldering, and return the unit fully tested with all screws and seals correctly refitted. Deliverable: • My PS5 returned with a brand-new HDMI port and confirmed, flawless display ou...

...RTC, EM18 RFID module, buzzers and indicator LEDs. The schematics and layouts are all in KiCad and functionally proven, but a handful of physical tweaks are still needed before I send them to fabrication again. What I need you to do in KiCad: • Reroute a few traces . * Reszie PCBs * Mark / update silkscreen text • Widen or narrow specific pads and drills so the joints wet better and hand-soldering is more reliable. • Shift certain through-hole parts and add a couple of extra mounting pads called out in my notes. • Adjust overall board outlines on two of the three PCBs so they seat perfectly in their enclosures. Turn-around is short; if you are comfortable in KiCad this should fit easily into a two-to-three-day window once you receive my existing proj...

I’m putting together a small prototype that teams an ESP32 Mini with an nRF52840 Nice!Nano, and I’d like a single, compact board to host them both. Key points • Both modules must plug in through female pin headers so I can swap them out without touching a soldering iron.
 • The board will take 5 V at up to 2 A from a phone-style USB charger. Please add the capacitors, filtering, and any regulators you feel are necessary to keep both MCUs rock-solid.
 • A dual-colour LED driven by the ESP32 should show green or red according to my firmware. Bring the LED out to the edge of the board for easy viewing and break the control pin out to a nearby test pad.
 • I chose a compact layout, so keep the footprint tight while still leaving the ESP32’s...

...list inexpensive and compact; an Arduino-class board or a tiny ESP32 is fine as long as it stays small, battery-friendly, and easy to assemble with hand tools. What I need from you • A concise bill of materials I can buy locally (microcontroller, HC-SR04 or similar ultrasonic module, power circuit, mounting hardware, enclosure suggestions) • Step-by-step build instructions—including any soldering, 3D-printing, or off-the-shelf case mods—to secure the unit flush to the wall without wobble • Well-commented starter firmware (Arduino IDE/C++ or MicroPython) that initializes the ultrasonic sensor, detects the chest/hand distance change, debounces the signal, and increments a rep counter • Code snippets or libraries for sending the count to a sm...

I'm looking for an experienced PCB repair specialist. The PCB for an e-scooter controller has burn marks and broken traces. Key Requirements: - Diagnose and repair component damage (specific damaged components unknown) - Fix burn marks and broken traces Ideal Skills and Experience: - Proficiency in PCB repair and soldering - Experience with diagnosing and fixing burnt circuits and broken traces - Knowledge of e-scooter controller circuitry is a plus Please provide your experience and approach to the repair.

...them with you, and bring them back once they pass your bench test. When you return a miner, I expect it to hash at full spec for at least 24 hours with no ASIC errors and the latest stable firmware loaded. Please reply only if you are already based within driving distance of Sugar Land or Rosenberg and have the equipment to troubleshoot and rework multilayer boards—hot-air rework station, micro-soldering tools, oscilloscope or logic analyzer for signal tracing—plus experience with Antminer-class hardware....

Create a PCB with mosfet power switches for 4 lines (both positive and negative wires), controled by PWM signal (high is on). And current control circuit, to c... Max current for single line is 2 Amps. It will newer use more than one line at once. LED indicators for: Green - power in 4 pcs red ones for indicating a power at the output of each power line. Also need to install connectors: 1x JST-SH1.0 7pin connector (Vin/G/Curr/S1/S2/S3/S4) - S1-4 is PWM to control mosfets. Connector need to be installed on one edge of PCB, LED's on second edge, and soldering pads for power outputs on the opposite side to JST-SH connector. Dimensions of PCB need to be: Mounting: 30.5 x 30.5mm, Φ3mm. Outer dimensions: 36 x 36. Other requirements: - no dip elements must be used. - project...

...stage is required at this point—so routing should stay fairly straightforward. I will supply a rough hand-drawn schematic showing pinouts and preferred connector locations. Your job is to translate that into a clean, manufacturable PCB that meets standard fabrication rules for a single-layer board. Please keep board dimensions modest and component placement user-friendly, as I will be hand-soldering the parts myself. Deliverables (all in their latest, commonly accepted formats): • Schematic capture file • PCB layout file • Gerber and drill files ready for production • Simple BOM covering all footprints used Once I receive the Gerbers I’ll send them straight to fabrication, so accuracy and DRC compliance are critical. Let me know yo...

I have a Tears of the Kingdom-edition Nintendo Switch OLED that I’d like professionally modded with an RP2040 Picofly. The console is still fully assembled, so the job will include the complete teardown, precise flex placement, micro-soldering of the RP2040 points, clean reassembly and a quick power-on test to confirm the payload boots correctly. The Picofly itself isn’t in hand yet—I’m happy to source it or reimburse you if you prefer to bring your own module, whichever makes the workflow smoother on your side. I’m a total beginner with a soldering iron, so I’m counting on your experience to keep the board safe, prevent lifted pads and leave the install looking as close to factory as possible. Deliverables: • My Switch OLED returned...

I need a skilled electronics expert to print a 3d enclosure to integrate a lithium-ion battery into my Cyd Yellow board with a 2.8-inch screen. The board requires a 5V power supply and should be able to utilize both micro USB and USB-C power inputs. Requirements: - Integrate a rechargeable lithium-ion battery ...USB-C power inputs. Requirements: - Integrate a rechargeable lithium-ion battery - Power the board via micro USB and USB-C - Ensure the battery is rechargeable through the existing micro USB input Ideal skills and experience: - Experience with battery integration and power management - Proficiency in working with lithium-ion batteries - Knowledge of micro USB and USB-C power systems - Strong soldering and electronics assembly skills Please provide examples of similar ...

...Final firmware file * Schematic PDF * PCB photos * GPIO mapping * BOM / Gerber / JLCPCB production package if needed * Main components that remain inside the controller, such as enclosure, antenna, cable glands, wires, ferrules and PCB spacers The freelancer should preferably already have basic lab tools such as: * USB-TTL 3.3V adapter * 24V DC bench/test power supply * Multimeter * Basic soldering/wiring tools * Heat-shrink tubing, labels, screws or small local consumables Please mention in your proposal: 1. Your experience with ESP32 / ESP32-S3 devices 2. Your experience with USB-TTL flashing 3. Your experience with 24V DC testing 4. Whether you already have a 24V test power supply, USB-TTL adapter and multimeter 5. Your estimated price for Milestone 1: first pilot unit 6....

I need a precise, low-resistance solder joint made on the battery leads of my drone. The task is straightforward: take the existing electrical wire coming from the battery pack and solder it securely to the designated battery connection pads/connector on the airframe. A clean, shiny joint with proper strain relief is crucial so the connection can handle both current spikes and the vibrations that come with flight. Bring whatever tools you feel most confident with—a temperature-controlled iron, fine rosin flux, decent solder (60/40 or lead-free is fine if you’re comfortable), and heat-shrink tubing for insulation. Once the joint is complete, I’ll do a quick continuity and voltage drop test; as long as it passes and looks solid, the job is done. If this is something you c...

...out, light fixtures dusted, baseboards scrubbed, and floors mopped or vacuumed to the corners. Please bring your own supplies; eco-friendly products are welcome but not mandatory. Plumbing In the same visit I need pipe installation work completed (no leaks to fix, just new pipes set and tested). You’ll be tying into existing supply and waste lines, so you’ll need the right tools for cutting, soldering or crimp-ring connections, plus the ability to shut off and reopen the main without issue. Painting Walls and trim in all three rooms need two coats of low-VOC interior paint. I will supply the paint; you supply brushes, rollers, drop cloths, and any patching compound for minor nail holes or scuffs. Surfaces must be lightly sanded, wiped, primed where necessary, an...

I have a pair of ex-Japan headlights and matching tail lights for a single car model. The units already use LED technology, ...wiring. • Reseal and polish the lenses so they stay clear and condensation-free. • Verify beam alignment and light output match factory specs for this model. • Supply a brief video and photos that show the complete lighting cycle working before return shipping. I’ll courier the lamps to you and cover any specialised components you specify in advance. You’ll already have the tools—ESD-safe soldering gear, power supply, multimeter, sealant, polishing kit, etc.—and a solid track record with automotive lighting repairs or retrofits. Please tell me your estimated turnaround once the parts arrive and link to any simil...

I’ve already designed a small Arduino-based build and gathered every part you’ll need—board, shields, sensors, add-on modules, wiring, and headers. What I now require is careful through-hole and, where needed, surface-mount soldering followed by clean assembly so the project is ready for immediate testing on my end. There is a light sensor, motion sensor, temp sensor, gps, camera, satellite modem, sd module, solar panel, battery and power system. There is a .ino that is working and I’ve been using to test the project on a solderless breadboard. You’ll be working from my written step-by-step instructions rather than a formal schematic, so a good eye for layout and the ability to double-check pinouts against datasheets is important. The work mainly inv...

...guidelines (IPC-A-610 or equivalent). Here is what I need from you: • Pick-and-place or precise hand placement of all SMD parts followed by reflow or hot-air soldering as appropriate • Clean, consistent hand-soldering of the DIP components, trimming leads flush afterward • Visual inspection under magnification and basic electrical continuity checks to confirm there are no bridges or cold joints • Return of the fully assembled boards, safely packaged, along with a brief test report (pass/fail per board and any observations) I can supply the bare boards, the complete BOM parts kit, and assembly drawings; you handle the soldering, inspection, and simple test phase. If you already work with ESD-safe stations, quality solder alloys, and have a...

I'm looking to create a prototype for a portable soldering iron specifically designed for electronics repair. The ideal candidate should have experience in product design and prototype development. Key requirements: - Lightweight and handheld - Compatible with 12v Milwaukee battery - Replaceable tips Ideal skills and experience: - Background in tools/electronics - Experience with battery-powered devices - Prototyping skills I have the components i want to use and design of product, at next faze to make it real life

I'm looking to create a prototype for a portable soldering iron specifically designed for electronics repair. The ideal candidate should have experience in product design and prototype development. Key requirements: - Lightweight and handheld - Compatible with 12v Milwaukee battery - Replaceable tips Ideal skills and experience: - Background in tools/electronics - Experience with battery-powered devices - Prototyping skills I have the components i want to use and design of product, at next faze to make it real life

...sensor package on the prototype vehicle at the NSW site - Document wiring diagrams and setup instructions so units can be replicated for 10+ vehicles 4. Requirements - Hands-on experience with Arduino (Uno, Nano, or similar) - Experience with GPS modules (NEO-6M or similar), compass/magnetometer (HMC5883L or BNO055), and IMU/tilt sensors (MPU6050 or BNO055) - Comfortable with sensor wiring, soldering, and building rugged enclosures for outdoor/vehicle use - Able to communicate sensor data via USB serial or Raspberry Pi GPIO - Able to work alongside a software developer and deliver to a defined interface spec - Based in Australia — on-site work in NSW north coast required at testing phase 5. Nice To Have - Experience mounting electronics in vehicles or outdoor environments...

...sensor package on the prototype vehicle at the NSW site - Document wiring diagrams and setup instructions so units can be replicated for 10+ vehicles 4. Requirements - Hands-on experience with Arduino (Uno, Nano, or similar) - Experience with GPS modules (NEO-6M or similar), compass/magnetometer (HMC5883L or BNO055), and IMU/tilt sensors (MPU6050 or BNO055) - Comfortable with sensor wiring, soldering, and building rugged enclosures for outdoor/vehicle use - Able to communicate sensor data via USB serial or Raspberry Pi GPIO - Able to work alongside a software developer and deliver to a defined interface spec - Based in Australia — on-site work in NSW north coast required at testing phase 5. Nice To Have - Experience mounting electronics in vehicles or outdoor environments...

I need a compact 5 W class-AB audio amplifier that can run from a single 12 V supply. Your task is to create the full KiCad project—clean schematic, well-routed PCB, and every file I’ll need for fabrication. Functional points • In...structure, thermal path, and how the headphone driver is isolated or muted when speakers are active. Acceptance criteria • Opens with no errors in the current stable KiCad release. • ERC/DRC clean. • Clear silkscreen labels on every connector and test point. Working prototype • Compact footprint—ideally under 70 × 70 mm—to keep enclosure costs down. Keep the board friendly to hand-soldering or basic reflow. When you bid, mention the output transistor or IC family you plan to use so I c...

...need 50 stereo speaker cables assembled with a small soldering job on each. Each cable needs a plug soldered onto a pre-stripped 4-conductor cable end. The wiring is: - Red wire → front gold post - White wire → rear gold post - Green + black wires twisted together → flat metal strain-relief strip All solder points are metal. I’ll provide a clear wiring illustration/photo guide showing exactly where each wire goes. I will specify the exact parts to be purchased, including the cables, plugs, plug housings and heat-shrink. You’ll need to purchase/source these parts and ship the completed cables to the UK once finished. You’ll need to provide the soldering iron, solder, flux, wick and any other tools required. For someone with soldering...

...sensor package on the prototype vehicle at the NSW site - Document wiring diagrams and setup instructions so units can be replicated for 10+ vehicles 4. Requirements - Hands-on experience with Arduino (Uno, Nano, or similar) - Experience with GPS modules (NEO-6M or similar), compass/magnetometer (HMC5883L or BNO055), and IMU/tilt sensors (MPU6050 or BNO055) - Comfortable with sensor wiring, soldering, and building rugged enclosures for outdoor/vehicle use - Able to communicate sensor data via USB serial or Raspberry Pi GPIO - Able to work alongside a software developer and deliver to a defined interface spec - Based in Australia — on-site work in NSW north coast required at testing phase 5. Nice To Have - Experience mounting electronics in vehicles or outdoor environments...

We are seeking 20-30 skilled soldering experts for a PCB project, specifically for a drone, to work on-site in Atlanta, GA (575 Wharton Dr SW, Atlanta, GA 30336, USA) from July/August through December. Key tasks include: - Soldering surface-mount components onto PCBs. Details: - Flexible schedule with more than 40 hours per week available. - Open to discussing rates directly with freelancers. Ideal skills and experience: - Proficiency in soldering microelectronics, especially surface-mount devices. - Experience with PCBs and attention to detail. - Ability to work with precision and reliability.

...design pcb quickly, it's very simple pcb with esp32, .1. Project Overview Design a simple baseboard PCB that allows pre-made development modules to plug directly into headers. The board must handle data transfer with an Android device (USB Host) while giving the plugged-in ESP32 control over the phone's charging power. 2. Module Headers & Interfaces Block A: Plug-and-Play Module Sockets Instead of soldering raw chips, provide female header pin sockets so the following modules can plug straight into the board: ESP32 DevKit Socket: Dual rows of female headers matching the exact pin footprint of a standard 30-pin ESP32 DevKit V1. Display Interface: A 1 times 9 female pin header breaking out the required GPIO/SPI pins from the ESP32 socket to control a 9-pin display. R...

I’m coordinating a project on an industrial site that calls for a single professional—or a tight-knit ...trades is critical, so I prefer someone who is truly comfortable bridging them rather than two separate contractors. To help me gauge fit quickly, please send links or photos of past work that demonstrate combined welding–plumbing projects in industrial settings. Show me examples where you handled stainless or carbon-steel welds (TIG or MIG) and then transitioned directly into pipe threading, soldering, or high-pressure fittings. The stronger the evidence of end-to-end responsibility, the faster I can move to scheduling and site access. Once we connect, I’ll share the layout drawings, required standards, and the site’s safety protocols so you can c...

...layout for both production lines * Develop PFMEA, process flow, and process map * Line balancing and operator allocation * Work instructions with quality checks * Basic production planning support Project details: * High mix assembly environment * Cable harness includes wire cut/strip/marking, crimping, ferrules, routing, and inspection * Box build includes component installation, wire routing, soldering, torque operations, testing, QC, and packing * Around 8 similar assemblies with shared processes * BOMs, drawings, reference files, and estimated annual volumes will be provided Looking for someone with: * Manufacturing engineering / industrial engineering experience * Experience in cable harness and electromechanical assembly * Knowledge of PFMEA and production flow developm...

...simple functional puff/hit-to-vape check is the first pass, then confirmation that each battery takes and holds a charge using a charging USB that I will provide. If anything reads off, I’d like a quick note so we can decide whether to rework that unit before final shipment. All parts, tubes, new batteries, the charger, and detailed instructions will be provided; you’ll only need your fine-tip soldering setup, flux, heat shrink, and the usual safety gear for small lithium-ion packs. Because of eyesight due to diabetes, and unsteady hands due to neuropathy now slow me down, I’m looking to hand this over within a modest budget but with the same care I’ve always applied myself. Deliverables: • 15 e-cigarettes cleaned at solder areas, re-soldered, re-tu...

...simple functional puff/hit-to-vape check is the first pass, then confirmation that each battery takes and holds a charge using a charging USB that I will provide. If anything reads off, I’d like a quick note so we can decide whether to rework that unit before final shipment. All parts, tubes, new batteries, the charger, and detailed instructions will be provided; you’ll only need your fine-tip soldering setup, flux, heat shrink, and the usual safety gear for small lithium-ion packs. Because of eyesight due to diabetes, and unsteady hands due to neuropathy now slow me down, I’m looking to hand this over within a modest budget but with the same care I’ve always applied myself. Deliverables: • 15 e-cigarettes cleaned at solder areas, re-soldered, re-tu...

...correctly and be built to a high standard. If issues are found upon delivery, I will clearly communicate what needs to be fixed and revisions are expected before final payment is released. I am looking for an engineer who takes pride in their work and stands behind what they build. Ideal candidate has: • Experience assembling handheld medical or consumer hardware devices • PCB fabrication and SMT soldering experience (JLCPCB/PCBWay workflow) • SLS or FDM 3D print experience for enclosures • Firmware flashing experience via USB/JTAG (ESP32 or STM32) • Comfortable working from AutoCAD files and detailed BOMs This is a one-time project with strong potential for ongoing paid work as we move into production and build our second device. To apply answer...

I'm seeking an expert to repair the amplification section of my Yamaha CA-800 amp board. The current board has a lot of damaged traces that need fixing. Ideal skills and experience: - Proficiency in working with vintage audio equipment - Experience in repairing damaged circuit traces - Knowledge of amplifier circuitry, specifically for the CA-800 model - Attention to detail and precision in soldering and assembly Please provide a detailed plan and any relevant experience with similar projects.

...steady-handed technician who can: • Desolder each depleted cell cleanly • Solder in the new lithium-ion battery without damaging the thin leads or plastic shell • Re-assemble the body so it snaps closed as originally intended • Verify each unit charges and fires correctly before returning them All fifteen batteries and devices are ready to ship to you immediately; you supply the tools—fine-tip soldering iron, ESD mat, flux, heat-shrink, and any protective fixtures you like. I care most about neat joints, reliable connections, and zero cosmetic damage, so please be comfortable working on very small PCB pads and tight housings. Once you’re finished, a short record of the charge test for each unit (voltage after full charge + quick activation...

I have a compact aluminium case measuring 5 cm × 5 cm × 5 cm that needs to be turned into a simple pas...Once everything is wired, close the box, test for continuity, and label the I/O if you think it helps. Deliverables • Finished, fully-wired enclosure returned in good condition • Clear close-up photos showing hole quality, solder joints, and final continuity test results If you own a drill press or similar rig for straight, centered holes and are comfortable with basic electronics hand-soldering, this should be quick work. I’ll reimburse tracked shipping both ways so we can focus purely on the build quality. Let me know your lead time and we can get started. All the components are from china, so I would prefer to award someone from China to av...

I am putting together a small team of hands-on technicians to help me assemble and bring up a run of industrial control boards. Your day-to-day will alternate between placing components on pre-fabricated PCBs, soldering them in place, and then running our standard functional checks before a board leaves the bench. The soldering work is straightforward—through-hole parts, a handful of SMD passives, nothing that calls for reflow or microscope work—so solid basic skills with a temperature-controlled iron, flux and wick are all that’s required. Once a board is built, you will load firmware with a USB programmer, power it, and walk through a scripted test sequence while logging results on a PC. I’ll supply the jig, multimeter, and any specialty fixtures; y...

TITLE: Hardware Prototyping Engineer (Contract, 2 months) DESCRIPTION: We're building a working prototype of an interactive educational device for an investor demo. Need someone who can take a defined spec and deliver a polished, reliab...(ESP32 / Arduino family) - Sensor integration on custom PCBs - 3D-printed enclosures with clean finish (not mandatory) - display + audio output REQUIREMENTS: - 3+ years of embedded prototyping experience (including academic or personal projects). Fresh graduates may apply if they demonstrate strong hands-on skills. - Portfolio of shipped demo hardware (not just code) - Experience with hand-soldering SMD, KiCad/EasyEDA - Available to work 4–5 days/week remotely until project completion; occasional in-person meetings req...

...Convert the current “reversible” PCB into dedicated left and right boards. Ensure the RP2040 Zero is oriented with buttons facing up on both sides. Prepare the project for JLCPCB PCBA prototyping. Scope: Modify the left PCB. Create a dedicated right PCB. Update diode footprints and, only if necessary, Cherry MX hotswap socket footprints. Keep RP2040 Zero and PJ320D as THT parts for later manual soldering. Add and validate JLCPCB Part # in the BOM using in-stock components. Constraints: Do not change PCB dimensions. Do not move switches, RP2040 Zero, or PJ320D. Only diodes can be repositioned (hotswap sockets only if strictly required for manufacturing). Preserve the original electrical functionality. Required deliverables: Final KiCad project (schematic + PCB fo...

My Logitech G604 has developed the classic double-clicking problem and I’ve already purchased a pair of Omron D2F-01F switches to fix it. What I lack is the soldering skill: I have no electronics experience at all and don’t want to risk ruining the board. would prefer a local freelancer to the towson maryland area Let me know your turnaround time and any guidance on shipping or handling so we can get my G604 clicking like new again.

The battery terminals on my small consumer-grade RF remote have burned out, leaving the unit powerless. I still need the r...but welcome: advice on adding reverse-polarity or over-current protection while you’re in there. Acceptance criteria: • Remote powers on and operates all original RF functions with stable voltage. • Physical modification fits within, or attaches cleanly to, the existing housing without interfering with buttons or antenna. • Clear documentation allows a moderately skilled hobbyist with a soldering iron, multimeter, and basic hand tools to replicate the fix. If you’ve rescued small electronics from battery damage before and can turn this around quickly, I’m ready to start right away and will happily leave a detailed, positi...

I am looking for a skilled electronics technician or hobbyist experienced with component modification to upgrade a "Re...microphone that will fit within the existing housing. • Disassembly & Installation: Carefully opening the unit and swapping the original hardware for the new modules. • Integration: Ensuring the new components interface correctly with the internal software/storage system. • Testing: Verifying clear audio and sharp video recording without lag. Requirements: • Experience with small electronics, soldering, and component integration. • Familiarity with single-board computers (like Raspberry Pi or similar) or internal USB camera modules is a plus. • Must have your own tools and a clean workspace to avoid scratching the unit’...

I own a 1970 Magnavox stereo console that played normally Recently the AM/FM receiver and amplifier failed. I would like a modern receiver / amplifier installed inside the cabinet and connected to the turntable and speakers so I can play records normally. I would like to re...finished and invisible from the outside. Deliverables • Finished, fully-tested installation ready to play vinyl plus any other source the new receiver supports • Simple wiring diagram and component list for future maintenance • Brief walkthrough (in person or video) showing how the controls now work Experience with vintage audio repair, woodworking finesse for hidden mounting, and clean soldering practices are all important here. If this sounds like your kind of hybrid project, I’...

...CMOS and reset the BIOS None of these steps helped, so the fault appears to be on the motherboard itself. I’m looking for an experienced server-grade hardware specialist who can: 1. Walk me through advanced board-level diagnostics to pinpoint the failed component(s), or accept the board for bench testing if that proves easier. 2. Carry out (or instruct me on) component-level repair—re-soldering, replacing VRMs, caps, or any other defective parts discovered. 3. Verify that the board posts successfully and produces a stable, error-free boot. 4. Provide a brief report outlining the root cause and the exact fix so I can document the repair for future reference. Knowledge of Dell PowerEdge architecture, POST error codes, and server-class motherboards is essent...

I need a compact circuit board designed to function like a pond ionizer, primarily to control algae growth. Requirements: - Input: 24V AC or DC - Output: 12V DC at approximately 0.1A to copper probes - Indicator: Green LED to light up when probes are submerged, completing the circuit Ideal Skills and Experience: - Experience in circuit design and P...Requirements: - Input: 24V AC or DC - Output: 12V DC at approximately 0.1A to copper probes - Indicator: Green LED to light up when probes are submerged, completing the circuit Ideal Skills and Experience: - Experience in circuit design and PCB layout - Familiarity with low voltage power supplies - Knowledge of water submersion and environmental resilience (high humidity, etc.) - Proficiency in soldering and working with electronic ...

...female header pins for easy connection and replacement of modules. Please design the PCB with properly spaced female headers for: * ESP32 module * MAX30102 sensor * DS18B20 sensor * TFT touch display Ensure: * Correct pin alignment and standard 2.54mm spacing * Strong mechanical support for headers * Clear labeling of each header on the PCB * Easy plug-and-play connections without direct soldering to modules Requirements: * Compact PCB (portable/handheld size) * 2-layer PCB design * Proper power section (battery + charging + boost converter) * Common ground plane * Decoupling capacitors near ESP32 and sensors * Clearly labeled connectors for all modules * JST connector for battery * USB port accessible from board edge * Mounting holes for enclosure Deliverables: * Schemat...

...battery input with voltage sense back to the MCU (the voltage sense may to be read from any source) • Add a 100 Mb Ethernet switch so the board exposes a second RJ-45 while keeping line rate and daisy chain became possible board by board (we will send most unicast data but also broadcast and multicast need to work) • Maintain two isolated DC/DC rails: 48 V→5 V for logic and 48 V→24 V (or 12v with soldering pad for choose for external loads). Both rail from poe and external power (dc or battery). • Board layout should allow future component swaps in EasyEDA without major rerouting, on this point i will explain better: the routing of the key point like WT32, Ethernet Port and Switch IC, DC/DC handler must to be separate so we can change the board layout mo...

I’m building an IoT solution around a Raspberry...guidance: pinout schematics and a clear parts list compatible with the Pi I already own. • Software stack: Python-based acquisition scripts, MQTT (or similar) publishing, and a lightweight dashboard—Grafana, Node-RED or any interface you prefer—as long as I can see live values in a browser. • Deployment help: step-by-step setup instructions so I can replicate the build on another SD card without soldering tweaks. • A short demo video or screenshots proving the data appears remotely and updates in near real time. Success means I can power up the Pi, connect to Wi-Fi, and watch the chosen sensor values appear on my screen from anywhere. If you’re in Jaipur, on-site handover is welcome, othe...

...move the original firmware from the burnt MCU to the new one so the board boots exactly as before. What I know so far • Goal: transfer the existing firmware, not develop a fresh build. • Access uncertainty: the old IC powers up inconsistently, so I am unsure whether its flash is still readable. • Tools on hand: a basic IC programmer that supports SWD/J-Link, hot-air rework, and standard soldering gear. How you can help 1. Determine the safest way to probe the damaged MCU and, if possible, extract its full flash and option bytes. 2. Prepare and verify the binary for the new STM32H723 so it matches addresses, boot pins, and security bits. 3. Guide me—step by step—through flashing the replacement chip and testing the board, or offer the servi...

I need a 555 timer circuit to control the activation of a camera and LEDs based on time delays. Requirements: - Circuit to turn on a camera and LEDs after a set delay - Manual switch to trigger the timer - Delay settings for activation: 15 to 60 minutes Ideal Skills and Experience: - Proficiency in designing and build...activation of a camera and LEDs based on time delays. Requirements: - Circuit to turn on a camera and LEDs after a set delay - Manual switch to trigger the timer - Delay settings for activation: 15 to 60 minutes Ideal Skills and Experience: - Proficiency in designing and building 555 timer circuits - Experience with delay circuits and timing applications - Familiarity with electronic components and soldering - Ability to provide a schematic and, if needed, a phys...

...Band switch works on the bench; changing it does not require code edits or reflashing—just flip the switch, power cycle, and go. • Clear wiring diagram, parts list, and commented firmware I can compile and flash myself. Please include any recommended modules (e.g., SX1262, NRF24L01, RFM95, etc.), antenna suggestions, and a quick note on enclosure or shielding if it matters. I am comfortable soldering and 3-D printing but need you to hand me tested code and schematics so I can reproduce your results exactly at my end....

I need targeted maintenance on my Jipsn board. The job is strictly maintenance-related: I already have the bo...repairs. Your task centres on updating those components, ensuring each replacement is fully compatible, installed cleanly, and tested so the board powers up and performs exactly as before—or better. Deliverables • Audit the current component list and identify all outdated parts • Source or specify equivalent, up-to-date replacements • Swap the components on the board with clean, high-quality soldering or fitting • Perform post-update functional tests and share a concise report (photos, measurements, pass/fail notes) If you have hands-on experience refreshing boards, troubleshooting after component swaps, and validating stability, I would ...