Quantity   Component name
5 × 1.0 uF 0603 Capacitor Only on parent modules
3 × 0603 LED Any colour you like, I used Blue. Only needed on the module with the ESP12 on
13 × WS2812B 3535 size Neopixel LEDs, WS2812B or equivelant in 3535 size. Ensure they are dried before soldering
3 × 1k 0603 Only on parent modules
1 × 300R 0603 Only on parent modules
1 × AP2112K 3v3 3v3 regulator. Only on parent modules
1 × 74AHC1G125D Logic ICs / Buffers, Drivers, Transceivers. Only needed on parent modules
1 × ESP-12 ESP WiFi module. Only on parent modules.
2 × 10uF 0603 6.3v Tant I didn't fit these in the end, but will help with neopixels if you have issues with the PSU.