0x12: Arduino Nano IoT snap-connector




Oftentimes a quick and easy cabled Ethernet measurement interface to a process is advantageous compared to wireless solutions.


This design integrates a simple dual linear power supply based on a robust Grätz bridge, a bank of capacitors, and two low-drop linear regulators capable of delivering 800 mA continuous power. Simply plug in any available power supply in the jack, upload sketch to the Arduino Nano, connect the analogue/digital sensor you have, plug in an Ethernet cable, and you are online with your measurement.

All pins on the Arduino Nano are broken out to headers as well.


License terms

The 0x12 design is published under the Creative Commons Unported 3.0 License.  I do not profit from this design, neither should you. You are welcome to adapt, modify, and redistribute this design as long as the license terms are respected.

Physical size of PCB

50 mm (length) by 50 mm (width). Double-sided.

Rendering and photos

DipTrace 3D rendering, frontside with components

DipTrace 3D rendering, frontside without components

DipTrace 3D rendering, backside with components

DipTrace 3D rendering, backside without components

Photo of the PCB, frontside, components mounted

Photo of the PCB, backside, components mounted

Photo of fully assembled PCB with Arduino Nano and ENC28J60 Ethernet shield


Bill of materials

4 pcs. LL4007 diode, 1 A, 1 kV, D-214

3 pcs. 220 uF, 16 V, electrolytic capacitor, 8.25 mm

3 pcs. 100 nF ceramic capacitor, 1206

1 pcs. linear regulator, low-drop, AMS1117-5.0, 5 VDC, 800 mA

1 pcs. linear regulator, low-drop, AMS1117-3.3, 3.3 VDC, 800 mA

2 pcs. 1×15 male header, 2.54 mm (0.1″)

2 pcs. 1×15 female header, 2.54 mm (0.1″)

2 pcs. Phoenix 16-pin terminal block (Phoenix part no. FFKDSA1/H-2,54-16)

1 pcs. power barrel jack, 2.1 mm pin, 5.5 mm barrel


Estimated cost

Headers, resistors, capacitors, LEDs, and precision voltage references should not cost more than EUR 2,-.


DipTrace v. PCB design file: 0x12 Arduino Nano snap-connector board – ratlined public

Gerber files: 0x12


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