4 open source boards using the ESP-01S

Real designs built with the ESP-01S, 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 ESP-01S in open source designs

The gallery holds 4 open source boards using the ESP-01S from 3 GitHub repositories; a typical one measures about 74.8 × 63.9 mm and carries around 22 components.

100% are two-layer designs, the rest use four layers or more, and 75% carry an open source license.

The most starred is Doorbell sensor by thorio.

Parts used alongside the ESP-01S

Microcontrollers on boards using the ESP-01S

What boards using the ESP-01S are built for

ESP-01S: common questions

Where can I find a ESP-01S reference design?

Each of the 4 boards on this page is a real design using the ESP-01S. 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 ESP-01S use?

Most are built on ESP8266 (3).

How big is a typical board using the ESP-01S?

The median is 74.8 × 63.9 mm, and 100% are two-layer designs.

What is the most popular open source board using the ESP-01S?

By GitHub stars, Doorbell sensor by thorio, with 28 stars.

Can I simulate one of these boards using the ESP-01S 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