Now you can start firmware installation by following the steps here: Firmware Installation Run this in a terminal to list possible serial ports: ls -l /dev/cu.usb*.Check your computer for a new serial port (on macOS it appears as a file beginning with /dev/cu.usb).Now you can release the DFU / Boot0 button.You should have the DFU/Boot0 button pressed while you do this. Press and hold the DFU / Boot0 button down.Turn on the On/Off switch - check that you see the OK light on so you know the board is powered, a prerequisite!.Make sure your ESP32-S2 is plugged into USB port to your computer using a data/sync cable.Connect the other end of the Stemma QT cable to any of the QT connectors of the TSL2591 sensorĮntering the bootloader is easy.Connect one end of the Stemma QT cable to the QT connector of the Metro ESP32-S2 board.Adafruit TSL2591 High Dynamic Range Digital Light Sensor: $6.95.Solution 1: No-solder sensor Characteristics There are 2 possible solutions, based on how much effort you're willing to put into the sensor and how much you care about the price and looks. Note: this server is not needed for the instructions below this section Hardware Home Assistant server with a light sensor.You can run the server on any device, as long as you have a way to read lux values. If you have different hardware that you want to use, you can find a Python server that can act as a Lunar sensor here: Lunar Sensor Ambient Light Sensor Special case: Custom Sensor
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