In the book Make: Making Simple Robots, FiberBot a simple e-textile Arduino bot needs:
- an Adafruit mini 8 x 8 LED single colour matrix with backpack (5V)
- an Adafruit Gemma 1222
- a 3 x AAA battery holder with JST connector + batteries to give 4.5V of power
Pimoroni doesn't appear to sell this battery holder. Is there an equivalent? My current holder, with JST, gives 6V which, I assume, is too much for the LED matrix. What battery combo should I get?