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• Review

  M5Stack review

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  @domi
  Are you using the "4Relay module" or the "4Relay unit" or the "2Relay module" ?

  If you still get an error, try to make a simple Uiflow programm scanning the i2c bus with the 4Relay connected:
  0_1675006853542_cfe4a152-de11-4d5b-8158-f44191defe28-image.png
  You should get the number [38, 117] displayed as Label0, 38 is the decimal for 0x26.
  If you get 37 you have another firmware than I have (I2C address 0x25).
  If you only get [117] your 4Relay module is not connected to the M5Stack core. 117 (0x75) is the I2C address of the battery management chip.

• Campaign

  M5Stack Campaign

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  The Shenzhen, China-based technology company M5Stack specialises in the design, development, and production of IoT development toolkits and solutions. We are dedicated to offering open source IoT development toolkits that are fully functional, adaptable, and affordable, as well as the simple programming environment "UIFlow" and AIoT solutions for smart cities, smart agriculture, business applications, industry 4.0, robotics, and STEAM education. M5Stack is on a mission to "Fast & Simple IoT development," and we can close the gap between development and finished product with the aid of simple-to-develop tools and solutions.