TinyPLC-Duo, a dual channel Arduino based PLC

Description

TinyPLC Duo is a two channel PLC with two inputs and two outputs.  It measures 4.04 x 1.65 inches.

Features:

• *two relays rated for 4A @ 120V AC or 4A @ 12V DC.
  *Logic outputs on each relay for interfacing with external Solid State Relays.
  *Two semi-protected inputs for switches or other sensors.
  *ATmega 328P-PU chip, compatible with full Arduino IDE and library.
  *Features 30K of program space
  *6 pin ISP Header
  *USB-B socket for 5v power.
  *Green, Blue, and Red LED’s – programmed to indicate relay and state status in example code.
  *Reset button
  *Transistors are protected by bypass diodes to prolong system life.
  *Relays are protected by resistance/capacitance filters to prolong contact life.
  *Relays are rated for 10A – 240V AC or 10A 30V DC (current limited by trace size on PCB).
• Recommended tools and accessories:
  *USBTinyISP programmer or similar with 6 pin ISP cable
  *ArduinoIDE
  *USB-B cable and power source (cell phone charger, computer, etc)