• 0x31
  • 0x32
  • 0x33
  • 0x30 plus the number on the pad
  • 0x3F
  • 0x30
  • With this button, the device looks for a base station in order to recoordinate after failed channel hopping.

Turning Point Clicker

Newer Older

This device is used for classroom roll-calls and quizes. A prototype of it made me suffer through countless chemistry lectures, but this is the production model.

The device uses a Nordic nRF24E1G. Firmware is unprotected, sitting in a 25C32 SPI EEPROM accessible through test points.

I've annotated each button with the code that it broadcasts when pressed. The GO button is used for resyncing and does not broadcast a message on the standard channel.

keyboard shortcuts: previous photo next photo L view in light box F favorite < scroll film strip left > scroll film strip right ? show all shortcuts