AMPduino – A3CS Shield

December 25, 2019

Welcome to AMPduino Project.  What I have here is the AMPduino Audio Amplifier Controller Shield (A3CS) , a dedicated plug & play shield for the Arduino Uno form factor dedicated to use in DIY amplifier Build to monitor, detect and control your favorite DIY Amplifier.

AMPduino-A3CS on top of the Arduino Uno

The purpose of this shield is to easy plug and play connectors for dedicated sensors like the  :

  1. Temperature and Humidity inside the Amplifier Case
  2. The KSD01F – 75 degree metal case detector
  3. The Real-Time-Clock (RTC),
  4. The TFT LCD / LCM : 20×4 or Nextion HMI
  5. Speaker Protector Module / Relay Module
  6. DC or AC Supply (Power Management)

Like the picture below, which makes it lean, tidy and clean PCB board interfacing – – thanks to the idea of 1diyTEAM of 1 deBB (1diy elecronic Building Block), by interfacing small-small module like bricks or Lego, you can come-up with a system an example is the Nathan Winter Kamp Project – a nice sounding a class A Power Amplifier, see picture below.

AMPduino-A3CS Shield with external hardware

The moment truth of the AMPduino-A3CS was seen in the  Nathan Winter Kamp DIY Power Amplifier – – a nice sounding Class-A  Power Amplifier that demonstrate the use of the metal case as heatsink and 80% of its operation is controlled by Arduino, the AMPduino-A3CS shield.

AMPduino-A3CS installed on the DIY Amplifier, the Nathan Winter Kamp Class-A

Technical files

  1. Schematic Diagram (pdf format)
    1. AMPduino-A3CS Main Circuit (742K bytes)
    2. AMPduino-A3CS Power Supply (752K bytes)
    3. AMPduino-A3CS SW1 & LED Interfaced (959K bytes)
  2. Arduino Sketch Program to enable Simple Hardware : SW1 & LED
    1. Power On/Off Switch with LED (7.11K bytes)
    2. Improved Power On/Off Switch with LED (8.13K bytes)
    3. Enable 5Vdc switch Q1 (11.3K bytes)
    4. Video Demo
  3. Arduino Serial Monitor, DHT11 Sensor
    1. The use of Terminal Monitor for datalog & program flow (10.3K bytes)
    2. Display DHT11 Temperature & Humidity on the Serial Monitor
    3. Video Demo
  4. Relay Interfacing
    1. Relay to Control 220Vac/60Hz & Speaker Connection
    2. Video Demo
  5. Part 2 | Arduino Sketch Program to enable LCD
    1. 20 x 4 LCD display
    2. OLED 1.3 display
    3. Nextion LCD Display

Video Demo / Tutorials

episode01 : AMPduino Project Introduction (D Stuffs youtube video), this is my Introduction while working in the Kingdom of Thailand : AMPduino Project episode#01

Sneak View of the AMPduino-A3CS development (D Stuffs youtube video)

episode#02 : Design the Circuit of the A3CS Module (D Stuffs youtube video) – AMPduino Audio Amplifier Controller Shield : AMPduino Project – episode#02

episode#03 : Standby Mode – Active Mode, SW1 & LED : AMPduino A3CS | episode#03 STANDBY and ACTIVE Mode with Push Button Switch | LED interfacing

Stay tuned for more update on the AMPduino Project.