ESP32 USBHOST TO BLE KEYBOARD

DIY your ESP32 BLE KEYBOARD with USB HOST SHIELD:

Ferture:

• Pair with as many Device as u want ... just look the code (but it cost 4-5 seconds to switch (unable to connect ESP32 with multy device))
• High power consumption (>90mah+your keyboard)

Todo:

• forget ESP32 for ble keyboard and use a nRFxxx instead !!! due to high power consumption problem (maybe solve in the future)

How to:

• I use platformio so just download and open by visual code with platformio extension installed (if not visual code usually ask u to install it).
• not a schematic:
  USB Host Mini v2 to ESP32
  GPIO5 : SS
  GPIO16 : RESET
  GPIO17 : INT
  GPIO18 : SCK
  GPIO19 : MISO
  GPIO23 : MOSI
  

note: from https://create.arduino.cc/projecthub/139994/plug-any-usb-device-on-an-esp8266-e0ca8a u have to cut the track inorder to use 5v USB devices

• Other pin is not important:
  GPIO2: Statusled
  GPIO0: connect it with some key on your keyboard so you can update ESP32 & wake it up from deep-sleep mode GPIO34: Baterry vol (with 30k & 100k resistor more info here)
• u should add a swith or PNP transistor for turn Keyboard off (it cost >100 mah LOL)

Thanks to:

• T-vK for ESP32-BLE-Keyboard arduino library
• felis for USB_Host_Shield_2.0 arduino library