brainstorm / arduino_compact_faceting_head

Arduino sketch for the compact faceting head's rotation sensor, display and depth of cut indicator

Arduino ompact faceting head

Arduino sketch for the compact faceting head's rotation sensor, display, depth of cut indicator and RPM sensor.

Watch GemWorks on Youtube for more context on what this is used for

Libraries used

1. LiquidCrystal_I2C for the LCD display: https://github.com/johnrickman/LiquidCrystal_I2C, do not confuse with the more supported LiquidCrystal library.
2. ISR Timer Interrupts for the RPM hall sensor: https://github.com/khoih-prog/TimerInterrupt.

Common modifications

Here's how you can adapt this sketch to your own (most common) differences w.r.t encoders and I2C LCD display drivers:

 // Rotary Encoder
-unsigned int encCal = 2048;            // Encoder counts at calibration point
+unsigned int encCal = 4096;            // Encoder counts at calibration point
-float degPerStep = 0.090;              // The number of degrees per encoder step (1000 counts)
+float degPerStep = 0.04678;              // The number of degrees per encoder step (1000 counts)

@@ -64,7 +89,7 @@ int lastCalibState = false;

 // Set the LCD address  for a 20 chars and 4 line display
-LiquidCrystal_I2C lcd(0x3F, 20, 4);
+LiquidCrystal_I2C lcd(0x27, 20, 4);

So tweak those settings and match them to your hardware. The ones above are tuned for the HS25 optical encoder from Sensata

Also the LCD display can have I2C addresses 0x3F or 0x27, YMMV.