5 open source boards using the MCP23017_ML

Real designs built with the MCP23017_ML, 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.

The MCP23017_ML in open source designs

The gallery holds 5 open source boards using the MCP23017_ML from 4 GitHub repositories; a typical one measures about 171 × 83.9 mm and carries around 125 components.

60% are two-layer designs, the rest use four layers or more, and 40% carry an open source license.

The most starred is V5 control by zynthian.

Parts used alongside the MCP23017_ML

Microcontrollers on boards using the MCP23017_ML

MCP23017_ML: common questions

Where can I find a MCP23017_ML reference design?

Each of the 5 boards on this page is a real design using the MCP23017_ML. 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 MCP23017_ML use?

Most are built on ESP32 (3).

How big is a typical board using the MCP23017_ML?

The median is 171 × 83.9 mm, and 60% are two-layer designs.

What is the most popular open source board using the MCP23017_ML?

By GitHub stars, V5 control by zynthian, with 154 stars.

Can I simulate one of these boards using the MCP23017_ML 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.

Browse boards by part