UPS and Solar Charge for Raspberry Pi

I'm looking for a UPS circuit board design that can satisfy the following requirements for the Raspberry Pi 3.

- Charge battery with 12V solar panel

- Supply to 5V and up to 2.5A Power to Raspberry pi

- Accepts charge from 20W solar panel

I want to be able to monitor the following data

== Example ==

batt_voltage: 13.23

pv_voltage: 0.14

load_amps: 0.01

batt_overdischarge_voltage: 11.07

batt_full_voltage: 14.45

load_on: True

load_overload: False

load_short: False

batt_overload: False

batt_overdischarge: False

batt_full: False

batt_charging: False

batt_temp: 21

charge_current: 0.0

Project Deliverables:

- Soft copy of Circuit Board Design

- 10 physical sample Circuit Boards that we can test (You can choose any pcb printer/manufacture that you wish)

- Python source code that will go along with it

NOTE: Existing circuit board designs that meets the project requirements are acceptable and you are encouraged to provide these project references.

The project was specified mistakenly as $30-$250 budget. Unfortunately, I'm not able to change it after the project was posted. You are more than welcome to bid more than $250.

Skills: Electrical Engineering, Electronics, Microcontroller, PCB Layout, Raspberry Pi

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About the Employer:
( 26 reviews ) Rockville, United States

Project ID: #17396351

12 freelancers are bidding on average $354 for this job


Hi, Thanks for the Email and Invitation. the bid Placed is just a place holder and ill tell you the final bid ones the project specs are final Relevant Skills and Experience As you know we already have a design for More

$155 USD in 3 days
(41 Reviews)
$200 USD in 2 days
(39 Reviews)
anhvu100 limits # of characters to enter so pls look at this link for detail information: [login to view URL] Relevant Skills and Experience Please More

$1200 USD in 14 days
(24 Reviews)
$30 USD in 3 days
(9 Reviews)

It is necessary to first design a general schematic of necessary components, then a pcb board based on that using KICAD, then a prototype by ordering and building components. Relevant Skills and Experience I am experi More

$1111 USD in 14 days
(2 Reviews)

ok buddy,,,u can tell...i m here...i used to work on. Relevant Skills and Experience Raspberry pie arduino html php c# android proteus matlab Proposed Milestones $90 USD - u will feel brotherhood Note: i will More

$90 USD in 3 days
(16 Reviews)

Hi, i am kahan. I am embedded developer and have much experienced hardware and software side. Relevant Skills and Experience embedded, electrical Proposed Milestones $222 USD - complete project Waiting for further More

$222 USD in 7 days
(7 Reviews)

I've already developed a similar circuit, a multi-chemistry battery charger with VIN-DPM (solar powered devices need this), Input and Battery Current Monitor, system Power Monitor, IMVP8 Compliant Relevant Skills and More

$500 USD in 15 days
(2 Reviews)

I can design the whole system from you since I've developed a skill set directly relevant to the PCB design role you are hiring for including prototype, research, development, and experimental design. Relevant Skills More

$177 USD in 4 days
(0 Reviews)
$222 USD in 3 days
(0 Reviews)

I am ready to start work on your algorithm jobs. I am creative and flexible and will be beneficial to your jobs. I strongly believe that my experience and skill in the areas of C and C# programming will be beneficial More

$35 USD in 2 days
(0 Reviews)

Hi there, I'm interested in your project. I made similar solar charge controller including MPPT algorithm and 5V/3A smps to charge cellphones. I found that your project is similar to what I did before. Only one thing More

$300 USD in 20 days
(1 Review)