USB CDC Touch Relay Control Board CH554

Description

Application:

• Based on WCH microcontroller, default flashed USB CDC communication application:
  • Basic demo USB to relay control, send ‘A’ will toggle relay.
  • Baudrate 57600
  • USB send and read to UART1 interface (TX1 / RX1)

Board Features:

• Relay Control:
  • On board 10A 250VAC, 30VDC relay.
• Lead out all pins from the microcontroller WCH CH554.
• ADC:
  • On board two channels of ADC, voltage divider 10K/4.7K
• Programmable LED: P1.4, solder the front PCB solder to connect them first
• Type-C:
  • Tested default firmware, output detecting message via uart.
  • Disconnect front P1.4 jumper and connect back jumper to use.
  • Support USB programming or any other USB functions.
• Touch key functions:
  • On board four channel touch keys, can be programmed to control relay.
  • User can touch PCB directly or touch on touch-spring.
  • Breakable touch keys, if not use can just break away.
  • Touch part of functions are not coded in default firmware,
• Package includes four spring-touch:
  • The height of assembled touch spring is still lower than relay
  • If you need pre-soldered touch spring please leave notes.

All documentation please find at the portal wiki here. 

WCH CH55x Series:

• CH551
• CH552 and CH554
• CH559
• USB CDC Touch Relay Control Board CH554

Additional information