NS2009 Touch Screen Controller

The ns2009 touchscreen platform allows using the touch screen controllers based on the NS2009 chip with ESPHome. The I²C bus is required to be set up in your configuration for this touchscreen to work.

This controller is used in the Olimex MOD-LCD2.8RTP.

NS2009 touchscreen on Olimex MOD-LCD2.8RTP

# Example configuration entry
touchscreen:
  id: my_touchscreen
  platform: ns2009
  calibration:
    x_min: 400
    x_max: 3700
    y_min: 300
    y_max: 3700

Configuration Variables

• id (Optional, ID): Manually set the ID of this touchscreen.

• threshold (Optional, int): The pressure it takes for a touch to register. Range: 0 - 255, defaults to 40.

• address (Optional, int): The I²C address of this touchscreen, defaults to 0x48.

• calibration (Required): The NS2009 is a resistive controller, so each panel needs its own calibration. Set the raw values (0 - 4095) that match the edges of the screen:

  • x_min (Required, int): The raw value at the left (or top if swap_xy is set) edge.
  • x_max (Required, int): The raw value at the right (or bottom if swap_xy is set) edge.
  • y_min (Required, int): The raw value at the top (or left if swap_xy is set) edge.
  • y_max (Required, int): The raw value at the bottom (or right if swap_xy is set) edge.

  See Calibration for how to find these values.

• All other options from Touchscreen.

See Also

• API Reference: ns2009.h