EIE3105_Debounce_Test

Notes

• Only oscilloscope can display bouncy signal, MCU's ADC and cheap ADC ICs cannot
• 104 cap should be ok
• 10k for pull-up / pull-down
• RC circuit (second resister for debouncing both edges) looks like a voltage divider
  • RC Circuits Physics Problems, Time Constant Explained, Capacitor Charging and Discharging - YouTube
• Software delay
  • Lecture materials
  • Raspberry Pi GPIO Switch Input - Part 1: Circuitry and Debouncing - YouTube
• Circuitry
  • Debouncing mechanical push button switch with capacitor and resistor how to DIY electronics - YouTube
  • Debounce a Switch - YouTube
• Schmitt trigger
  • Schmitt trigger using IC 741 - Study of IC's - Application of Electronics - YouTube
  • https://eopcw.com/assets/stores/Electrical%20Engineering%20Laboratory%20III/lecturenote_520626135Exp%209.pdf
  • equation
    • 

Arduino UNO basic specification

• Arduino Uno Rev3 — Arduino Online Shop

3V3 on current measurement

Bouncy signal (before)

After

Potential PCB

DIY Layout Creator

• debounce.diy

Simulations

• Simulating Arduino Using Proteus - 4 (Key Debouncing) - YouTube

Related

• dirkarnez/MAX6818-debouncing-circuit

TODOs

• what is the ampere value of 3v3 port (100-150mA?)