SEAL - Plasma Group Power Electronics Software

This repository contains files used in Arduino-based devices which control the power supply parameters such as frequency, duty cycle, and burst ratio. One version is designed for the Arduino Nano (non-BLE, non-WiFi), and other for the Seeed Studio XIAO SAMD21.

Note the steps required to push onto this branch:

git init
git add "filename" (or git add . to add all files in folder)
git commit -m "message for commit"
git remote add origin https://github.com/notkevin1/SEAL_SINEW_Mask.git
git push -u origin main

Technical Details for Seeeduino Script:

• Using the 48 MHz clock of GCLK0 (routed to TCC0)
  • Each timer counts up to a maximum or TOP value set by the PER register, this determines the frequency of the PWM operation: Freq = 48MHz/(2*N*PER)
  • With N (number of divisions of 48 MHz) set to 1, this becomes Freq = 48MHz/(2*PER) or PER = 48MHz/(2*Freq)
  • Set duty cycle by adjusting the CC[n] register, which has a relationship of CC[2].reg = (48MHz*duty_cycle)/(2*freq)
• Output = pin D2 (A3 or B3 on breadboard), GND = pin 2 (J3 on breadboard)
• Parts of script sourced from here

Wiring Diagrams/Schematic

Example Waveform - Continuous Frequency

Example Waveform - Base Frequency @ 20 kHz (Duty Cycle = 50%), Burst Frequency = 1 kHz (Burst Ratio = 30%)