hardware

hardware continuity checklist

Designed PCB layout with KiCad

A list of connectivity checks after soldering

Vcc (3.3V) - front

Reference: ESP8266 Vcc pin

• R3, R6, R7, R8
• C2, C3
• SP1 long pin
• P1 pin 1
• U1 pin 6
• U3pin 5

Ground - back

Reference: ESP8266 GND pin

• R1, R5
• C1, C2, C3, C4, C5, C6, C7
• P2 Bell connector
• P3 FTDI connector
• P4 Boot jumper

5V

Reference: P3 FTDI connector 5V

• P2
• C4, C7
• U3 pins 1 and 3

Shorted pins?

• U1, U2 ESP8266, U3
• SP1
• P1, P2, P3, P4