# STM32 microcontroller

25 Hacker News commenters recommended STM32 microcontroller and 6 criticized it, November 2025 to November 2026. It was recommended in 10 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** Cheap, feature-rich ARM microcontrollers with many chip variants, plentiful examples and readily available documentation. Common caveats are hardware bugs and a steep learning curve.

## Why people recommend it

- Cheap, feature-rich, widely available chips (5 comments): "STM is popular because their lineup is cheap, offers a lot of features, and the documentation is readily available." ([source](https://news.ycombinator.com/item?id=46550325)) "Yeah you can get <$1 STM32 dev boards and <$4 ST-Link dongles off Aliexpress." ([source](https://news.ycombinator.com/item?id=49333036)) "the cheapest dual-USB chip stocked by LCSC with good vendor tool support" ([source](https://news.ycombinator.com/item?id=49595714))
- Advanced timers and peripherals (4 comments): "If you want a drop-in hardware capture block with filtering and prescalers, STM32 is the better choice." ([source](https://news.ycombinator.com/item?id=46275661)) "the STM33's timers literally have orders of magnitude more features" ([source](https://news.ycombinator.com/item?id=46273289)) "CAN and I2S have worked well for years on STM-32/rust." ([source](https://news.ycombinator.com/item?id=47998565))
- Wide range of chip variants (3 comments): "General-purpose, including high-performance, low-power, and high I/O: Stm32" ([source](https://news.ycombinator.com/item?id=46275216)) "Widely used, and an absolute boatload of chip variants for different tasks" ([source](https://news.ycombinator.com/item?id=45989598)) "Including stm32, NXP as well as local arm32 licensees gd32,hk32,XHSC." ([source](https://news.ycombinator.com/item?id=49326188))
- Plentiful examples and documentation (2 comments): "STM is popular because their lineup is cheap, offers a lot of features, and the documentation is readily available." ([source](https://news.ycombinator.com/item?id=46550325)) "STM32s have huge numbers of examples in the wild" ([source](https://news.ycombinator.com/item?id=46551890))

## What people warn about

- Hardware bugs and rushed releases (2 comments): "Stm32 chips are plagued with all sorts of issues and hardware bugs that are very easy to run into." ([source](https://news.ycombinator.com/item?id=45780851)) "From all outward appearances STM stuff is basically rushed to market, fix the bugs later." ([source](https://news.ycombinator.com/item?id=46551600))

## Alternatives hackers recommend

- [ESP32](https://hackerapproved.com/p/esp32.md): 190 recommend
- [Arduino boards](https://hackerapproved.com/p/arduino.md): 81 recommend
- [Raspberry Pi Pico](https://hackerapproved.com/p/raspberry-pi-pico.md): 72 recommend
- [Raspberry Pi RP2040](https://hackerapproved.com/p/rp2040.md): 29 recommend
- [ESP32-S3](https://hackerapproved.com/p/esp32-s3.md): 26 recommend

## Where to get it

- [See price on Amazon](https://www.amazon.com/s?k=STMicroelectronics+STM32+microcontroller+development+board&tag=hackerapprove-20) (affiliate link)

## Cite as

Hacker Approved, "STM32 microcontroller", https://hackerapproved.com/p/stm32/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).