2 open source boards using the SIM_SLOT

Real designs built with the SIM_SLOT, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.

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The SIM_SLOT in open source designs

The gallery holds 2 open source boards using the SIM_SLOT from 1 GitHub repository; a typical one measures about 44 × 118 mm and carries around 196 components.

100% use four copper layers or more, and 100% carry an open source license.

The most starred is 3210retro by DasBasti.

Microcontrollers on boards using the SIM_SLOT

ESP8266 2

What boards using the SIM_SLOT are built for

Retro computing 2

SIM_SLOT: common questions

Where can I find a SIM_SLOT reference design?

Each of the 2 boards on this page is a real design using the SIM_SLOT. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.

Which microcontrollers do boards using the SIM_SLOT use?

Most are built on ESP8266 (2).

How big is a typical board using the SIM_SLOT?

The median is 44 × 118 mm, and 0% are two-layer designs.

What is the most popular open source board using the SIM_SLOT?

By GitHub stars, 3210retro by DasBasti, with 9 stars.

Can I simulate one of these boards using the SIM_SLOT before building it?

Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.