CANADUINO PLC MEGA328 Electronics DIY Kit (100% compatible with Arduino)

CAD 36.90

Closed for Xmas Holidays 12/12 – 01/06.
Except on 12/26 for Boxing Day Special.
No backorders accepted until 01/06/2024.
Availability: In stock SKU: 26442
Quantity 3 - 9 CAD 33.21
Quantity 10 - 24 CAD 32.29
Quantity 25 + CAD 31.37


A fully fitted, tiny Programmable Logic Controller for Arduino NANO (compatible module included) with a footprint of only 100 x 80mm!

This DIY soldering kit offers an incredible cheap opportunity to add a programmable logic controller to many kinds of projects and machines like lighting, HVAC, greenhouses, water treatment or smokehouses. It can help you control your Halloween decoration or your manufacturing equipment.

CANADUINO MEGA328 100-12 PLC is powered by an Arduino NANO V3 or compatible module, and can be programmed using Arduino IDE or other tools like Mitov’s ingenious “Visuino”.

CANADUINO MEGA328 100-12 PLC fits just any budget but delivers power and versatility equal to 10x more expensive professional control devices.

MEGA328 100-12 PLC basic features:
– 4 analog 0-10V inputs (10mV res.)
– 4 analog 0-10V outputs (2.5mV res.)
– 4 digital inputs 3-15V or 5-24V *
– 6 digital 250V/5A relay outputs
– I2C bus for external sensors, displays etc.
DS1307 RTC (real-time clock) with a backup battery

MEGA328 100-12 PLC is a Do-It-Yourself kit comprising only through-hole parts and is easy to build using basic electronic tools.

The kit contains the PCB, all passive, active and mechanical parts, and a compatible NANO V3 module.

A Mini-USB Cable (link) is sold separately.

The backup battery CR2032 is not included.

A power supply 12V DC, min. 0.5A is required.


Substitute parts:
Sometimes, we can’t source the exact parts as listed in the documentation. Then we will ship the kit with substitutes close enough to guarantee proper function. To avoid mistakes, install the exact matching parts first, and then see what is left and match these parts to the empty spaces on your PCB. This way, you avoid installing the wrong parts by mistake.

We also offer a larger Arduino PLC Project, the CANADUINO PLC 300-24, based on Arduino MEGA2560, with a total of 54 analog and digital outputs. This is a project for serious automation applications.


Assembling Instructions 1.2 PDF Download

Nice assembling video and review by our great supporter “Pileofstuff” (YouTube)

* Both options are included in the parts kit. 


NOTE: The switching voltage converter to see on the pictures was replaced by an STM L7805CV linear voltage regulator for better EMC and higher reliability.

Additional information







2 reviews for CANADUINO PLC MEGA328 Electronics DIY Kit (100% compatible with Arduino)

  1. 4 out of 5

    jim.cordill (verified owner)

    Overall this is a great little kit, I had some confusion with some resistor sip packs with different values then listed in the parts list, most likely due to supply issues the kit came with 1k sips, rather then the 1.2k as listed, but a quick look at the schematic showed the substitution was ok. Also the kit was missing two red LED’s.
    The main reason for the four star review was due to an error on the PCB, the AREF pin is tied to VCC, this should NEVER be done on an AVR, the AREF pin should be left floating or have a 0.1uf cap to ground, the M328 has a reference mux internal to select VCC or an internal BG reference, tying this pin to VCC will damage the M328 if the internal ref is selected by software!!!
    I solved this mistake by removing the AREF pin from the Arduino module, A note should be added to the assembly instructions about this, and on the next revision of the board, this error can be fixed. C3 should probably also be changed to a 2.2uf as well.
    Again, overall a very nice little PLC, I’m looking forward to using it for some projects! Thanks


    It is up to the developer to supply an external reference voltage or to use the internal reference. If you change the internal reference, you can damage the MCU when an external reference voltage is supplied. But changing the reference voltage wouldn’t make any sense because then the 0-10V inputs and outputs wouldn’t work properly anymore. We might add a note to the instructions that the voltage reference should be set to EXTERNAL and to nothing else, to avoid unsuspecting people damaging their NANOs. Thank you for the hint.

  3. 5 out of 5

    pat.caron (verified owner)

    This is a great little PLC kit. I am using it for garage door & heating automation. The team at Universal-Solder have responded quickly to a minor issue I had with the kit.
    As stated by other reviewers, resister SIP values were changed from 1.2k to 1k ohm.
    I recommend this as excellent Arduino PLC automation product.

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