ESP32 vs. STM32 / Raspberry Pi
ESP32 vs STM32 vs Raspberry Pi · 2026 IoT hardware pick
ESP32 is the default for Wi-Fi / BLE IoT. STM32 wins on low-power + motor control. Pi when you need a full OS.
option AESP32option BSTM32 / Raspberry PiserviceCustom software · everything else
→ Verdict
ESP32 for connected IoT where Wi-Fi / BLE is the killer feature. STM32 for low-power battery-op, precise timing, safety-critical. Raspberry Pi when you need a full Linux OS and can afford the power budget.
Pick a topic
When to pick which
A · Pick this when…
ESP32
- 01Wi-Fi / BLE connectivity required
- 02Low unit cost ($2-8)
- 03OTA updates + cloud sync
B · Pick that when…
STM32 / Raspberry Pi
- 01STM32: battery life > 1 year required
- 02STM32: motor control, precise timing
- 03Pi: full Linux / Python / Node.js
- 04Pi: computer vision / edge ML
Factors to weigh
Factor-by-factor
| Factors to weigh | ESP32 | STM32 / Raspberry Pi |
|---|---|---|
| Unit cost (2026) | $2-8 | STM32 $3-25, Pi $15-80 |
| Power (sleep) | ~10µA | STM32 <1µA, Pi >100mA |
| Connectivity | Wi-Fi + BLE built-in | STM32 external, Pi built-in |
| Compute | 240MHz dual, RISC-V | STM32 up to 480MHz, Pi GHz class |
| OS support | FreeRTOS / bare / Arduino | STM32 RTOS, Pi Linux |
| Development speed | Fast (Arduino, ESP-IDF) | STM32 medium, Pi fast |
| We recommend | Connected IoT, low cost | STM32 for low-power / precision, Pi for Linux / ML |
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