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# Hardware
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We are using HelTec Automation Wirelsess Sticks ESP32 Dev-Boards.
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### PinOut
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The PinOut of our version 3 modules can be found here: https://docs.heltec.org/en/node/esp32/dev-board/hardware_update_log.html#wifi-lora-32-hardware-update-logs
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![PinOut](https://resource.heltec.cn/download/Wireless_Stick_V3/HTIT-WS_V3.png "PinOut")
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### License
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For some parts of the Heltec board you need a ["license"](https://docs.heltec.org/general/view_limited_technical_data.html#esp32-lora-series).
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### USB-C
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Our HelTec Automation Wirelsess Sticks ESP32 Dev-Boards already have USB-C. But they do not support Power Deliver (PD). If your computer tries to do PD, just plug a cheap USB hub between the board and your computer.
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### Arduino IDE
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HelTecs GitHub repo can be found here: https://github.com/HelTecAutomation/Heltec_ESP32
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I had to install VCP Drivers, first: https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers?tab=downloads
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You can add their Board Manager to the boards managers URLs: https://github.com/HelTecAutomation/Heltec_ESP32/blob/master/library.json and find their libraries in the IDE (Sketch -> Include Library -> Manage Libraries... Search for "heltec esp32").
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> These boards are already *V3* boards, so be careful selecting the right board and port (VCP).
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![Arduino IDE](docs/images/flash-with-arduino.png "select the right board and port")
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### Install esptool
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Esptool is a Pyhton program to flash ESP32. As it's a Pyhton tool you can install it using `pip`:
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```sh
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pip install esptool
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```
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### Find the port
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Usually you can find the used port using `esptool.py`:
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```sh
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esptool.py write_flash_status --non-volatile 0
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```
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#### Using MicroPython
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Download the firmware: https://micropython.org/download/
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Flash it using `esptool`: https://micropython.org/download/GENERIC_S3/
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```sh
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esptool.py --chip esp32s3 write_flash -z 0 ~/Desktop/GENERIC_S3-20220117-v1.18.bin
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```
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