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    I2C error when GOPlus servo + Grove Ultrasonic sensor

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    • S
      Serge
      last edited by

      Hi
      i try to use servo connected to GOPlus module and UtraSonic sensor SR 04.

      The SR04 with the classical 4 pins (trig and echo) works well alone (pin 21 and 22 )
      When a servo is connected : it doesn't work anymore : i2Cbus error 110 (detail : File I2c-bus.py line 41 in write_U8 OSError 110.

      I thought first it was a problem with SR04 connexion on pin 21 and 22.
      So i wanted to try the grove US sensor. But i didn't find a unit block.
      (see https://forum.m5stack.com/topic/1907/uiflow-and-unit-grove-ultrasonic-distance-sensor)

      But i ve found this morning :
      The I2C Error 110 occurs when Grove US sensor is connected on Port A and the servo stopped.
      There is no similar error when Grove US sensor is connecter to port PB1 on GOPLUS module

      Why ?

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