Embedded
Embedded Brains: Arduino vs Raspberry Pi vs STM32 vs ESP32
Microcontrollers and SBCs for prototyping and production.
Comparison
Features
Arduino Uno/Nano
$5 - $25
Raspberry Pi 5
$60 - $80
Best Choice
STM32 (Cortex-M)
$2 - $15
ESP32
$4 - $8
Architecture
8-bit AVR
64-bit ARM
32-bit ARM
Xtensa 32-bit
Connectivity
No (Shields)
Yes
Some Models
Dual-core WiFi/BT
Clock Speed
16MHz
2.4GHz
Up to 480MHz
240MHz
Power Consumption
Low
High
Ultra-Low
Medium
RTOS Support
No
Linux (OS)
Yes (FreeRTOS)
Yes
Best Use Case
Beginners
Edge AI/Media
Industrial/Mass Prod
IoT/Connectivity
Action
Methodology
Focused on performance-per-watt, ecosystem support, and suitability for industrial deployment.
The Verdict
STM32 is the gold standard for industrial embedded design. ESP32 is unbeatable for connected IoT projects on a budget.