Arduino_Plasma_THC

THC (torch height controller) for Plasma CNC controller with Arduino UNO base

Hardware

• Arduino UNO
• 1602 text LCD
  • LCD RS pin to digital pin 13
  • LCD En pin to digital pin 12
  • LCD D4 pin to digital pin 11
  • LCD D5 pin to digital pin 10
  • LCD D6 pin to digital pin 09
  • LCD D7 pin to digital pin 08
  • LCD R/W pin to ground
• Rotary button
  • encoderPinA 2 //PORTD 2 - INT0
  • encoderPinB 3 //PORTD 3 - INT1
  • buttonPin 4 //PORTD 4
• I/O
  • outputOkPin A5 //PORTC 5
  • outputUpPin A4 //PORTC 4
  • outputDnPin A3 //PORTC 3
  • arcVoltPin A0 //PORTC 0

Some pictures of voltage divider

Library

• Used library
  • <LiquidCrystal.h>

Parameter

• DT - Delay time - Delay time of output closed despite no supply voltage, when the system detects the main (cutting) arc, 0.1~19.9s.
• HyS - Hysreresis - The hysteresis voltage - a rangge in which the voltage is measured, in which ther are signals controlling Up/Down, (+-1V ~ +-15V)
• StU - Started Voltage - Value of the off load voltage detection in the plasma cutter - uesd to detect the main (cutting) arc: 50~300V.
• dTime
• divRato

Source

https://github.com/PhamDuyAnh/Arduino_Plasma_THC.

License GNU GPL v3.0

Author

• Phạm Duy Anh (CKD) http://cncprovn.com

Donation

• Paypal: [email protected] or https://www.paypal.me/phamduyanh