Teensybat mainboard T4.1 + microphone

TeensyBat mainboard v1.0 + mic.

This is the second mainboard version made for the Teensy 4.1 development board.

This board holds all small components like microphone amplifier, charger and battery protection as well as the complete audioboard. This means you do not need to buy the Teensy audioboard but do still need the Teensy4.1 (version without headers, and you can use the version without ethernet)

This board has a cut-out for placing annadditional GPS receiver, and a position for a temperature sensor. It can accept two different 2.8" ili9341 lcd display (red PCB with q1 transistor)

This offer is just the mainboard with a rectangular microphone. 

The mainboard version changed to V1.0
The difference with previous versions mainboards that the backup battery for the realtime clock is missing, the power is now taken from the main battery. It is recommended to store the detector with a properly charged battery. The building instructions for V0.8 can be used, the board size is the same as for v0.7