I need 2 separate PCBs designed to interface with a raspberry pi over standard pi 40-pin bus.
27x58mm. Will have 3-4 different types of surface mount sensors on it, as well as some connectors for external sensors, the pi header, and a power input lead from the power supply circuit (below). This board will also have a power button on it which will need to send a signal to the pi over GPIO so that we can interpret things like soft power down, reboot, etc. in the code. This will also need to have an RGB LED to be able to signal different modes through a semi-transparent power switch.
Approximately 30x76mm. We can get into requirements in more detail once project is started, but total sensor and components draw will exceed what Pi is capable of, so we need a separate power pcb to provide power to both the Pi, the sensor board (possibly only directly to the sensor board, and then back to Pi over 40 pin header), as well as providing power to 2 separate components (raspberry pi touchscreen and a camera module). The touchscreen power and a couple other components will need to have a mosfet switch or something to that effect so we can disable power to them via software to switch to a low power usage mode. Also need a small temp sensor on this board and barrel jack connector.
Power board will need to be able to handle 5V at roughly 4-5A total current draw. Power board will also need to have a LiPo charging circuit built in for an attached backup battery.
These boards will also be used in harsher environments with consistent temps in the 75-90 range and high humidity, so we need to make sure to accommodate that with proper component selection.
Project will have on-going periodic work. We have been working the past 6 months with another engineer but they can't continue to work on this for personal reasons and therefore we are trying to find a replacement.