In Progress

Re-design of Microcontroller based timer / regulator / solar controller / sensor

We need an Electrical Engineer to design (redesign?) of a circuit to provide solar controller, scheduled timer, power regulation 12v-5v, and magnetic sensor integration.

1) Select microcontroller to replace existing Xylinx FPGA

2) Add solar controller component (LVD, overcharge) 50W/100W -> 12V SLA

3) Bluetooth low energy module for Android/iphone app control wirelessly

4) 12v->5v and 12v->9v regulator

5) LCD for menu/voltage/time display, digital battery voltage measurement

6) Review and update of old components

7) C application programming of micro (Set TOD, set schedule, set mag sensor threshold, LCD interface, BLE interface) C program exists now for Xylinx.

8) Specify layout requirements

9) Test and rework of 1st version of populated board

Schematic/Gerber/BOM/C programs of original working circuit will be made available to qualified candidates. Further detail of use cases to be provided.

Skills: Circuit Design, Electrical Engineering, Embedded Software, Microcontroller, PCB Layout

See more: test review board, Software Test Engineer, software review board, software design components, software component design, sla engineering, programs to design, programming a microcontroller, gerber engineering, engineering design software, design software programs, component board, bluetooth engineering, bluetooth engineer, bluetooth android controller, ble engineering, android test cases, android software update, android cases, solar power engineering

About the Employer:
( 0 reviews ) Minneapolis, United States

Project ID: #6968574

Awarded to:


Thanks for providing a detailed project description. I have inspected the attached document and as far as I understand, you need the central power control unit in this project, not the audio and SD card related parts. More

$2368 USD in 30 days
(3 Reviews)

32 freelancers are bidding on average $2421 for this job


hi Sir I am an experienced electrical engineer. I can help you with this. I have almost 4 years of experience in designing. Please share the further details. PLEASE GIVE ME A CHANCE TO PROVE MYSELF. Regards

$1500 USD in 10 days
(218 Reviews)

hi, i am an electrical engineer. i have expertise in embedded system design and Matlab.i can help you with this project. Please check my profile for my previous work [login to view URL] reply back and let us discuss pro More

$2500 USD in 20 days
(73 Reviews)

Hi! We are a team of experienced engineers with more than 10 years of experience in the field of developing devices with microcontrollers. We can use Atmel AVR microcontroller for your project. Pleasr see our portf More

$3000 USD in 60 days
(30 Reviews)

I am working as Lab Engineer at FAST National University Pakistan, in Electrical Department, I have conducted the followings Labs, and also supervised Projects related to these labs. 1. Control System Design & Mode More

$1500 USD in 10 days
(248 Reviews)

Hi, I am a post graduate power electronics engineer and having very good experience in product design and development. i am excellent in all power supplies like AC-DC,DC-DC,Inverters and converters. I am excellent in More

$2222 USD in 30 days
(57 Reviews)

Hello Sir, I am a full time working freelancer and I am available on freelancer most of times and I can provide you the required prototype as you want it. I have designed solar tra More

$2000 USD in 30 days
(46 Reviews)

Hi, I am a Mechatronics and Control Engineer, you can check my work on my blog [login to view URL] , I am expert in Embedded and can complete this project quite easily. I am gonna use Arduino for this pr More

$2500 USD in 20 days
(35 Reviews)

Hi, Have a Great Day. We are team of highly skilled Engineers and Technicians. We can provide you the working system based on following micro controllers. 1. Arduino 2. AVR atmega 16/32/128 etc. 3. 8051 4. PIC. More

$3000 USD in 35 days
(46 Reviews)

Hi Sir can help you, working with Altera Xilinix and Latice and full family of cpu 8 16 32 bits last ARM chip same STM32 , working with Altium for more of 30 years with de bigining Protel , please see you my portfolio More

$3333 USD in 30 days
(51 Reviews)

Hi. Thanks for posting this proposal. I am a leader of team that include several excellent circuit/PCB designers, firmware developers, FPGA/CPLD experts, application developers and so on. - For circuit/PCB des More

$2500 USD in 30 days
(12 Reviews)

Over 12 years of experience in electronics hardware and software design. Proficient in software and hardware design of embedded systems. Successful in planning and management of entire development and production cycl More

$2777 USD in 30 days
(37 Reviews)

I will review your existing design and create a fresh one with better efficiency and performance. I have over 25 years of experience in electronics (as I am doing it from my school ages) and over 18 years on programmin More

$2500 USD in 30 days
(41 Reviews)

Hi boss, I can do your project. Please see my portfolio. We had designed cell phone Li-ion battery charger with solar panel for USA customer,spirometer with Bluetooth and android app for USA customer and doing blue t More

$2500 USD in 45 days
(4 Reviews)

hello i designed DCS charger before I can do all of your requirements and we aree able to desgin android app for this product our price include PCB and full electronics circuit and one active PCB desgin I sugge More

$2500 USD in 45 days
(7 Reviews)

Hi, New to Freelancer so I apologise for the lack of status in here. I have read your brief and the attached doc and on the face of it it seems like an ideal example of meshing techenolgies together. We have consider More

$2722 USD in 45 days
(11 Reviews)

Hi, Client Hope you doing well I am an EE master to develop IT & consumer products. and I have some developers. so I can do it Look forward for hearing from you Bingbing.X

$1666 USD in 30 days
(7 Reviews)

i am an electronic engineer with 4 years of experience. i have experience with most of the modules required here. i will provide u BOM, PCB layout, firmware and ios and android apps to control the system. i will also d More

$1500 USD in 20 days
(9 Reviews)

Hi, We are a team of electronics&embedded engineers with more than 10 years of experience in designing and developing various digital and embedded systems... Currently, apart from our R&D, we help engineering st More

$3333 USD in 30 days
(9 Reviews)

Hello, We can implement your project using STM32 or AT91. We have experience working with them in several projects. Scheme and layout can be made in the Altium designer or Eagle. Both variants are possible. We've More

$2400 USD in 25 days
(5 Reviews)

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$2500 USD in 30 days
(3 Reviews)