We need a MPPT based charge controller system designed to run on a 63mmX63mm pcb. Board should charge a [url removed, login to view] lipo battery and collect power from a single .5v solar cell. Board will also send power to 1, 2 or 3 5mm LEDs. We currently have a proprietary design that powers one or two LEDs and runs very efficiently. System reduces output power to LEDs by half if the battery charge drops below 3.5v. System must include over-current/undercurrent protection for battery and must also include a "sleep mode" and can be awakened so that fully assembled systems can be stored without draining battery power.

Skills: Circuit Design, FPGA, Microcontroller, PLC & SCADA, Verilog / VHDL

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About the Employer:
( 0 reviews ) United States

Project ID: #11734804

13 freelancers are bidding on average $2357 for this job


Hello. I'm a PCB designer / electrical engineer. Your project interested for me. Also I ask you about existing board. Can we use it as starting point for new design? Wait for your response - please write in PM. Will More

$1500 USD in 10 days
(43 Reviews)

I have over 35 years experience as an electronic design engineer, please see my profile for more details The current price and timescales are only place holders to allow me to communicate with you I wonder if a desi More

$1666 USD in 30 days
(8 Reviews)

HI, About the Project : I have develop lot of project related to MPPT and LED drivers :) i would love to wokr on your project, shall we talk over chat ? About ME : I am a programmer for 10 years and has perf More

$2500 USD in 30 days
(18 Reviews)

Hi, If you are still in search and didnt find the right person to do this job then lets discuss. Will design the product, build and test a prototype and deliver fully functional design. My job includes programming of t More

$2500 USD in 30 days
(22 Reviews)

Hello Dear, We are a ream of experts with a cumulative experience of more than 50 years in the field of embedded systems and prototype development. Our experts have hands on experience developing ultra low power so More

$2500 USD in 30 days
(14 Reviews)

Hello, Have a great day. We are running a setup for developing Electronic devices. We will ship you fully working hardware. Please feel free to contact us. (i have a product that uses this circuitry it was built b More

$3000 USD in 45 days
(15 Reviews)

Hi, I have recently been working on a design for data logging device that importantly utilized a solar cell and energy harvesting technologies as its only source of power. There are a number of excellent solutions av More

$2500 USD in 30 days
(9 Reviews)

Hi, I am a post graduate power electronics engineer and having very good industrial experience of 8+ years in R&D and project development. I am excellent high frequency transformers design, circuits design, multi-chan More

$2777 USD in 30 days
(10 Reviews)

Hello, I have an experience with 3.7v lipo powered long life devices. For example, one of my project the BLE tracker with a wireless charger. If you have interest you can ask me in chat. Best Regards, Andrew

$2777 USD in 20 days
(2 Reviews)

hi I offer you 20A Maximum Power Point Tracking (MPPT) solar charge controller for 5V solar panel. This Solar MPPT Charge Controller including reverse battery protection and software programmable alarms and ind More

$1666 USD in 30 days
(2 Reviews)

Hello I have read what you exactly need. However, I would like to ask you a few questions. I do work in a smart way and do not rest until I get the job done. Please feel free to ping me anytime so we can have a detaile More

$2250 USD in 25 days
(0 Reviews)

Hi ! I have done extensive work with Raspberry Pi , Arduino and other smart boards and have Mobile development team with me with All required tools and Kits . our services include 1) Microcontroller pro More

$2500 USD in 30 days
(0 Reviews)

Hello, I can do this project. I am expert in FPGA, VHDL, Verilog. I have done no of project on this technology. Please open your chat box for more discussion. I have 4 year experience in this field. I can do your pro More

$2500 USD in 30 days
(0 Reviews)