Quantity   Component name
1 × ESP8266 SBMC Any ESP Board is fine~
1 × TM1637 4 digit 7 segment display
1 × 1602 LCD with I2C backpack 1602 Liquid Crystal Display with I2C backpack
1 × 4 Channel Relay Module 5V relay module array
1 × THT PCB Optional, can also use female to female GPIO cables to connect the modules if you want~