2 layers86 × 50 mm
2 layers
Arctic
sandorex/arcticMake your air conditioner dumb as a rock
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 29
- Pads
- 56
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 9 Jul 2026
- Updated
- 13 Oct 2026
Overview
Arctic is an open-source printed circuit board by sandorex, from the sandorex/arctic repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board with 11 parts on 29 nets.
It is built around the AO3401 and AO3402. Its parts include 7 resistors, 2 ICs and 2 transistors. It belongs with the ESP32 boards of this library.
Main components
2README
README.mdArctic
Arctic (Air Conditioner Cycler) is a dumb little device that basically cycles your air conditioner using the IR signal
What?
Its just a dumb little device that turns the AC on or off based on a time delay using IR
Oversized AC units are a nightmare, so this was the best and cheapest solution
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R7 |
| 2 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R4 |
| 2 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R5 |
| 1 | 33 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | AO3401 | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q2 |
| 1 | AO3402 | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q1 |
| 1 | I2C 0.91 128x32 OLED | Display:ER_OLEDM0.91_1x-I2C | U2 |
| 1 | WEMOS_ESP32_S2_Mini | library:WEMOS_S2_mini | U1 |
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Questions
What parts does the Arctic use?
11 parts, built around the AO3401 and AO3402. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Arctic KiCad files?
From the sandorex/arctic repository on GitHub, at the commit this page was made from: the board is kicad/project.kicad_pcb and its schematic kicad/project.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arctic design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).