ESP32 Homekey
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ESP32 based NFC reader designed for Homekey implementation.
Following specs are in place:
-Voltage In : 5 to 65V (MAX) suggested range 5V to 36V.
-NFC : will use an external antenna, we will design custom antennas in the future but for now antennas are available all over internet (aliexpress, seedstudio etc etc) the IC will be the PN532
-RGB LED : due to the operating voltage the neopixels were scrapped in favour of a more traditional RGB LED.
-USB C : Mainly for programming. Power can be supplied via the usb too. One single supply can be used at any time.
-External UART : Testpoints will enable to have an external UART. Those can serve also as general purpose IOs for buzzers buttons or whatever you fancy.
-I2C or SPI : both are connected to the PN532 + the IRQ pin, this is in case in the future those would be needed.
ESP32 Homekey
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