GPIO Conflicts

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GPIO Conflicts

UPS PIco - Uninterruptible Power Supply (HV3.0B+) conflicts with the DHT22s which are use GPIO27 (Pin13) & GPIO22 (Pin15).

The UPS PIco Uses the Following Pins

  • Serial Port (Firmware Updates): GPIO14 (Pin8) & GPIO15 (Pin10)
  • i2c Port: GPIO2 (Pin3) & GPIO3 (Pin5)
  • Pulse Train: GPIO27 (Pin13) & GPIO22 (Pin15)

It also uses the I2C addresses 68-6f:

$ i2cdetect -y 1
    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- 68 69 6a 6b 6c 6d 6e 6f 
70: -- -- -- -- -- -- -- --

Witty Pi Mini Realtime Clock and Power Management

Witty Pi Mini uses GPIO-4, GPIO-17, GPIO-2(SDA 1) and GPIO-3(SCL 1). The usage of GPIO-4 and GPIO-17 are customizable.