I need a small PCB designed for a prototype appliance to read data from a GPIO PIN and write it to a microSD card.
The board must use a low-power SMD MCU (to be discussed which, I am ok with Microchip, atmel or NXP), a regulator to [url removed, login to view] and a SMD slot for microSD cards. It will be powered from a small form factor 6V rechargeable battery. A switch to turn on the device and leds should be provided to indicate beginning / end of operation as well as any errors. A 16Mhz crystal is also required.
C Software (and source code) must also be provided to interact with a FAT32 filesystem on the SD card. The data read from the GPIO pin must be written to the SD card in text files.
I will provide specs for the GPIO input.
I must be able to prototype the design in-house with a semi-professional reflow oven or soldering station on custom-made PCB. I also have everything needed to build a breadboard prototype.
Please be available to discuss/work together over Skype and speak fluent english. Someone available on GMT will be preferred. Do provide links to similar/past projects as well as brief indication of the MCU of choice.
6 freelancer đang chào giá trung bình $379 cho công việc này
Hello! I'm Ph.D. in Electronic Engineereing. I'm specialized embedded designs, including SD or microSD file system controlled by microcontroller. I can do what you need with quality and reliability!
I have many practical experience in this kind of electronic development (firmware, hardware, pcb design and so on). I would like to help you on this project and I am certain we can reach your objectives.