Electronic switch with 4 channels and voltage regulator

From StdOut
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I used this module to control the LED lights in my first apartment.
Mounted in the living room

A build-in voltage regulator for 5V allows a input voltage of 9 to 24V. The used is used for digital control of four channels, every channel with a dual color LED (red/green) and a push button. The LEDs show the status of the output, they lit up when a button is pushed and turns off after 10 seconds. By pushing the buttons the outputs can be toggled. The module can receive a external signal that turns off all outputs. Max load is 0.5 A (about 25 LEDs). It's possible to power anything running on 5V with this controller, like relays.

Video

I/O

Inputs

  1. PA.0 Push button 1
  2. PA.1 Push button 2
  3. PD.0 Push button 3
  4. PD.1 Push button 4
  5. PD.2 Lights out, from Light control unit

Outputs

Status LED

  1. PB.0 LED 1 green
  2. PB.1 LED 1 red
  3. PB.2 LED 2 green
  4. PB.3 LED 2 red
  5. PB.4 LED 3 green
  6. PB.5 LED 3 red
  7. PB.6 LED 4 green
  8. PB.7 LED 4 red

LED light outputs

  1. PD.3 LED lighting 1
  2. PD.4 LED lighting 2
  3. PD.5 LED lighting 3
  4. PD.6 LED lighting 4

D-Sub 9-pin

  1. LED lighting 1
  2. LED lighting 2
  3. LED lighting 3
  4. LED lighting 4
  5. Lights out -12V, from Light control unit
  6. Lights out +12V, from Light control unit
  7. -5V out
  8. +5V out

Wires

  1. Yellow
  2. Green
  3. Blue
  4. Purple
  5. Red
  6. Brown
  7. White
  8. Black

Source code

Git-alt-brands.svg
Bascom-AVR source is available in a git repository:
https://github.com/thomasjsn/AVR-Electronic-switch-4-channels

Gallery

Schematic drawing

Electronic-switch-circuit-4l0504.png

Parts list

Qty. Part
1 × AVR ATtiny2313-20PU, DIL-20, 20 MHz, 18 I/Os
1 × Capacitor, aluminium electrolytic, 10 µF, 25V
2 × Capacitor, aluminium electrolytic, 47 µF, 25V
1 × Capacitor, ceramic, 1 nF, 100V
1 × D-sub soldering cups, 9 pin female
1 × DIL socket, 20-pin, 7.62mm
1 × DIL socket, 6-pin, 7.62mm
1 × Diode, rectifier, 1 A, 400V, 1N4004
1 × Enclosure, plastic (1591 FL), 120x65x40mm, flange
1 × Enclosure, plastic (1591), 112x62x31mm
1 × Fuse 5x20 mm, 500 mA, fast-acting
1 × Fuse holder, open, PCB, 5x20mm
1 × Fuse holder, open, PCB, Protective cover
1 × Heat conducting film for heatsink, Adhesive, TO220
1 × Heatsink, 6K/W @ 10W, 37.5mm 49g
4 × LED 5mm, Red/Green, 2.0 2.1V, 10mA, 100 63mcd, 30°
4 × LED holder 5mm, RTC51, black plastic
1 × Optocoupler, single, CNY17F-3, DIL-6
1 × Power jack, panel, 2.1mm, plastic housing
13 × Resistor, carbon film, 0.25W, 330 Ω, 5%
5 × Resistor, carbon film, 0.25W, 4.7 kΩ, 5%
5 × Resistor, carbon film, 0.25W, 10 kΩ, 5%
1 × Resistor, metal film, 0.6W, 1 kΩ, 1%
13 × Straight pin header, female, Single row, 2.54mm
13 × Straight pin header, male, Single row, 2.54mm
4 × Switch, push-button, 1-pole, 1A, 50VAC, on-(off)
2 × Terminal block, PCB, screw, 5mm 2-pin
4 × Transistor, NPN, 800 mA, 45V, 0.625W, BC337-25
1 × Voltage regulator +5V, 1 A, 7805PI
1 m Wire, stranded, 0.22mm2, Black
3 m Wire, stranded, 0.22mm2, Grey
1 m Wire, stranded, 0.22mm2, Red
3 m Wire, stranded, 0.22mm2, Yellow

Resources