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Raspberry Pi custom shield development

I want to make a custom Raspberry Pi 3 shield board for my project. There are many shields already exist on the market, but I want to combine the followings in one small board, and another breakout board for DC power jack and push button switch. Work includes the selection of the components, develop and test using RPi and Raspbian, schematic design, BOM, artwork layout for the PCBs, firmware and software code needed for the operation.

• Power on/off control – single button switch to 1) turn the power on, 2) shutdown the RPi and cut the power to RPi and all peripherals completely, 3) long press (5 sec) to force power cut.

Ref.: Ti TPS65930, ACT2802, [WittyPi], [ProtoCentral],[AndiceLabs],[GeekWorm],[MoPi],[18650 Battery Shield]

• Battery management – battery charging (prevent over/under charge), flexible battery configuration (3.7V 1/2/3 cells parallel, serial? Can I use 18650 battery?), LED display (Red-charging, Green- fully charged), remaining level monitoring. Auto shutoff power to prevent a full discharge.

• I2C

o ADC (10 or 12bit 5v) X3 – 1 Battery level monitoring + 2 extra (connector)

o RTC (DS3231) & EEPROM (AT24C32)– powered by the rechargeable battery, no coin-cell. [Ref. Link] [url removed, login to view]

o Two Extra I2C connectors for expansion

• 1-Wire

o Temperature sensor (DS18B20) X3 (1 onboard, 2 connector) [Ref. Link] [url removed, login to view]

• LED Driver

o Constant Current LED Driver for common high-power LEDs (DC 3~12V, 300mA, 450mA, 600mA)

• Output

o 5V 2A output X2

• Input - Interrupt

o On/off switch

o CNY70 interface X2

1) Selection of input power: I’d like to use common power adapter, such as 12V 3A or 5V 3A. Calculate the requirements and recommend the specification.

2) Use long life-time, not-discontinued, most common components to prevent discontinuation issues. RoHS compliant.

3) ESD protection (I don’t exactly know the meaning, but suggested in other designs),

4) Low EMC and low heat dissipation

5) Board layout (artwork) included with Gerber files to make PCBs . Thickness of the PCB is 1mm.

6) Figure out if using a separate reference voltage is important for the operation

7) Firmware code need to be software downloadable

8) Test on Raspbian environment – most of sample codes are already exist.

Details can be discussed further...

Evner: Kredsløbs Design, Elektronik, Microcontroller, PCB Layout, Raspberry Pi

Se mere: raspberry pi shields, raspberry pi expansion header, raspberry pi prototype shield, raspberry pi hat, raspberry pi 3 expansion board, raspberry pi 3 prototype board, raspberry pi gpio shield, raspberry pi io shield, raspberry pi python web development freelance, raspberry pi 2 software development nz, custom ning development, custom report development quote, kentico custom web development, custom software development business driver, custom web development company online code redemption

Om arbejdsgiveren:
( 2 bedømmelser ) Gwangju-si, Korea, Republic of

Projekt ID: #16460607

Tildelt til:


Dear Sir! I am very interest in your job as an experienced eelctronic engineer. For 10+ years, I have been working in this field. Specially, I have an essential skill in your job field include raspberry programming. Flere

$833 USD in 10 dage
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18 freelancere byder i gennemsnit $1154 på dette job

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$750 USD in 10 dage
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Hi there i have worked with RPI alot as i am a senior embedded developer and expert please inbox me for further details

$3888 USD in 10 dage
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Hello, I am an Electronics Engineer and Embedded system developer. I have expertise in Digital and Analog electronic design and Product Design.I can help you with this project work. Kindly check my profile for past pr Flere

$2500 USD in 10 dage
(49 bedømmelser)

Senior ENGINEER has more of 40 years’ experience in this profession, developing Hardware and Software Expertise in video processing and associated simulation and evaluation tools and methods, communication I2C, I2S, SA Flere

$1666 USD in 10 dage
(48 bedømmelser)

Hello, Have a great day. My name is Shahbaz Ali, I am representing I-TECH. We will design, prototype and ship the hardware. Please feel free to contact us. Best Regards, Shahbaz.

$1500 USD in 30 dage
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Hi there. As an electrical engineer, I am very interested in this project. Great idea. Actually I work with my team and we have enough experience in circuit design, pcb design and product design. For product design, w Flere

$2000 USD in 10 dage
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$1111 USD in 10 dage
(17 bedømmelser)

Hello, Some of the things listed you don't realy need 2) Use long life-time, not-discontinued, most common components to prevent discontinuation issues. RoHS compliant. You can use automotive components this at the Flere

$611 USD in 30 dage
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$250 USD in 10 dage
(18 bedømmelser)

Hello. how are you? I am Raspberry Pi expert. I have enough experience at this field. I am very interested to your project.

$250 USD in 3 dage
(3 bedømmelser)

Hi, I am a boss of a talented developers' team. We have raspberry pi 3 board and have been developed python applications We have already developed RF transceivers such as dvb-t2 transceiver, odu + idu etc and can h Flere

$555 USD in 10 dage
(1 bedømmelse)

Hello. I already had experience with development hardware for Raspberry PI. You could use any battery configuration if we will use DC buck boost power converter. Lets discuss other details over chat and start work on Flere

$600 USD in 10 dage
(10 bedømmelser)

How r u?Bro,,Its me Imad,, Have done 200+PROJECTS REGARDING MATLAB, ARDUINO, VB.NET, PHP, HTML, PCB DESIGNING and much more. Some of the projects are as follows. 1. NEXTION LCD Based bike monitoring and Control Syste Flere

$250 USD in 10 dage
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Hi there..... Warm Greetings We came along with your request for Raspberry Pi custom shield development and we reviewed your project description. We'd like to help you with confidence and satisfying results... Flere

$555 USD in 10 dage
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Hello I have experience in embedded circuit design including component selection, schematics , circuit simulation, Pcb layout , testing. This is an interesting project and i would like to work in this. Happy to disc Flere

$833 USD in 20 dage
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Greetings, We are experienced professionals in the field of raspberry pi and embedded systems. Having more than 3 years experience in such projects. Allow us to complete your task with perfection. Kindest Regards

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