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router has some spare GPIOs available. The [[toh/tp-link/tl-mr3020|TP-Link MR3020]] has 2 unused GPIO ports at R15 and R17. Otherwi... l-up resistor between GPIO ports and 3.3V. On the MR3020 GPIO 7 would be SDA and the GPIO 29 would be SCL.
  • Last modified: 2022/04/24 10:04
  • by hauke