STM32 Development Boards

A container of boards you can start an STM32 project on without soldering or laying out anything. Each Nucleo is a microcontroller broken out to headers with a programmer already on board: plug in USB and write code.

The boards are deliberately different — STM32 has several families and they are for different things:

• NUCLEO-H7S3L8 — Cortex-M7, up to 600 MHz. The fastest in the box: graphics, signal processing, anything an ordinary microcontroller runs out of steam on.
• NUCLEO-G431RB — Cortex-M4 with a maths accelerator. The family for motor control and digital power.
• NUCLEO-U031R8 — Cortex-M0+, ultra-low power. For things that live on a cell for years. There are two of these — handy when you need to bring up a link between two devices.
• NUCLEO-U545RE-Q — Cortex-M33 with TrustZone. Also low power, but with hardware security.

The others are one of each.

The probes

There are several compact ST-LINK V3 units in the box — ordinary debug probes, for boards that do not have one of their own.

Separately there is the ST-LINK V3-PWR. It is a probe and a power measurement unit in one: it supplies the board at 1.6–3.6 V and at the same time measures current from 100 nA to 550 mA, at up to a hundred thousand samples a second, synchronised with code execution. So you see not just “how much it eats” but what each part of the firmware costs.

If you need a wider range, or the device is not an STM32, the Nordic Power Profiler Kit II is nearby: up to 1 A, 0.8–5 V and eight logic inputs, though with no debugger attached to it.

The CatCon adapters

The box holds adapters from STDC14 — the standard 14-pin ST-LINK connector — to CatCon, the connector used on KIISU and other RW boards. Without one you simply cannot attach a probe to those boards, so if you are working on RW hardware, start with that adapter.

The contents change

The list above is correct as of 19 October 2026. The box is a living thing: boards get added, and sometimes they go off into projects. If something on the list is not there, that happens — ask us.

And the other way round: if your project needs a development board we do not have, write to us. We are usually happy to buy one — it costs less than you would think, and the next person will want it too.

How to use

1. Take a board, and a probe with a cable if you need one, from the container.
2. Install STM32CubeIDE, or whatever environment you are used to.
3. Nucleo boards need no separate probe — it is on the board, so connect over USB.
4. For your own board take an ST-LINK V3 and the right cable; for RW boards, the CatCon adapter.
5. Put everything back in the container, cables included. Cables are what goes missing first.

Access

The container is in the hackspace room, so a plan that includes hackspace access is required. No induction is needed.