DTMF (Dual Tone Multi Frequency) is a signaling system for identifying the keys or better say the number dialed on a pushbutton or DTMF keypad. DTMF (Dual Tone Multi Frequency) is a signaling system ...

https://microcontrollerslab.com/mt8870-dtmf-decoder-module-pinout-interfacing-with-arduino-features/#Pin_Configuration #define PULSE_PIN 8 // The pin on the arduino ...

[Colin] wanted a way to reliably control an Arduino via ham radio. One of the easiest methods of automated radio control makes use of Dual-Tone Multi-Frequency signalling. To those who aren’t into ...

// March 12th, 2025: Removed the stupid amount repeating "if" statements / cleaned up the code. Also unknownly made the binary input make logical sense too. float X; float Y; float Z; byte C; bool R = ...