Quantity   Component name
1 × Arduino Mega 2560
1 × ESP 8266 processor
1 × Adafruit FX Soundboard 2Mb with amplifier built in
2 × SPST toggle switches for ANSO, Wifi usage
3 × Momentary pushbuttons for set, up, down, demo mode
1 × SPDT Center off toggle for Chime, Bell, Silent
1 × MPL115A2 Barometer - Adafruit Barometer sensor
1 × RTC DS3231 Real time clock
1 × 10. LDR photocell For brightness adjustment, if wanted
1 × 11. DHT 11 or 22 Temperature and Humidity sensor
1 × 5 v power adapter 4 A - the matrix and soundboard both are 'beefy'
2 × 10K resistor Used for DHT22 if there and the LDR if there
1 × Four segment numeric LED (e.g. 1.2” display) with IC2 backpack If used as the 2nday (persistent) time display
1 × Another MX7219 if used If used as the 2ndary time display instead of either none or the four segment
4 × Independent 8x8 displays with unique i2c addresses If that's your build choice for the 2ndary display
1 × Enclosure I used wooden wine bottle boxes, but I've also built them in clear plastic too
1 × LED "Facing" or Cover Either red plastic or Chemcast Black LED diffuser (TAP Plastics)
1 × Generic 8 ohm speaker The FX board actually supports two speakers but I only use one