Components and supplies
1N4007 – High Voltage, High Current Rated Diode
Power Supply PCB
7 Segment LED Display, InfoVue
36 MOhm resistor
16 MHz Crystal
MAX7219/MAX7221 LED Display Drivers
9V battery (generic)
Resistor 10k ohm
Main Logic PCB
9V Battery Clip
Touch Ring PCB
Arduino UNO
Through Hole Resistor, 47 kohm
Capacitor 10 µF
Buzzer, Piezo
Capacitor 22 pF
Capacitor 100 µF
Linear Regulator (7805)
ATmega328PB microcontroller
Tools and machines
3D Printer (generic)
Soldering iron (generic)
Apps and platforms
Arduino IDE
Project description
Code
Capacitive Touch Timer Firmware
Please visit this page for a detailed explanation: https://nerdhut.de/2021/03/04/arduino-based-capacitive-timer-3/
Downloadable files
Schematics
This project contains three schematic diagrams! Visit the following site for details: https://nerdhut.de/2021/02/10/arduino-based-capacitive-timer-2/
Schematics
Schematics
This project contains three schematic diagrams! Visit the following site for details: https://nerdhut.de/2021/02/10/arduino-based-capacitive-timer-2/
Schematics
Comments
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