| š·ļø MCU | āļø Arch / Speed | š¶ Wireless | š¾ Flash / RAM | š GPIO | ā” Voltage | š” Highlights |
|---|
| ESP32 | Xtensa / 240MHz | Wi-Fi + BT | 4MB / 520KB | ~34 | 3.3V | Dual-core, BLE & Wi-Fi, AI capable (S3) š„ |
| RP2040 | ARM Cortex-M0+ / 133MHz | None | 2MB / 264KB | 26 | 3.3V | Raspberry Piās chip! Dual-core, flexible, fast DMA ā” |
| ATmega328P | AVR / 16MHz | No | 32KB / 2KB | 23 | 5V | Classic Arduino Uno chip ā¤ļø |
| STM32F103C8 | ARM Cortex-M3 / 72MHz | No | 64KB / 20KB | ~37 | 3.3V | Powerful 32-bit MCU, cheap “Blue Pill” š§Ŗ |
| ESP8266 | Xtensa / 80ā160MHz | Wi-Fi only | 4MB / 80KB | ~17 | 3.3V | Cheap Wi-Fi beast, NodeMCU š» |
| ATtiny85 | AVR / 8MHz | No | 8KB / 512B | 5ā6 | 5V/3.3V | Tiny but mighty! Fits in small builds š |
| Teensy 4.0 | ARM Cortex-M7 / 600MHz š² | No | 2MB / 1MB | ~40 | 3.3V | Ridiculously fast, real-time audio/video š£ |
| ESP32-C3 | RISC-V / 160MHz | Wi-Fi + BLE 5 | 4MB / 400KB | ~22 | 3.3V | BLE 5.0 + RISC-V core = future-ready š |
| Seeeduino XIAO | ARM Cortex-M0+ / 48MHz | No | 256KB / 32KB | ~11 | 3.3V | Super compact, breadboard-ready, USB-C šÆ |
| Adafruit Feather nRF52840 | ARM Cortex-M4 / 64MHz | BLE 5 | 1MB / 256KB | ~21 | 3.3V | BLE powerhouse, perfect for wearables & IoT š |
š„ Category Winners
| š Category | š„ Winner | š¬ Why |
|---|
| Best All-Rounder | ESP32 | Dual-core, BLE/Wi-Fi, low cost, huge ecosystem šš„ |
| Best for Low Power IoT | ESP32-C3 / nRF52840 | BLE 5, energy efficient, great for sensors š |
| Best Budget Option | ATmega328P | Reliable, easy to use, legendary for beginners šø |
| Best for Speed | Teensy 4.0 | 600MHz ā seriously next level for real-time audio/video šš§ |
| Smallest Form Factor | Seeeduino XIAO / ATtiny85 | Tiny but versatile ā ideal for wearables or mini bots š¦¾ |
| Best for Advanced Users | STM32F103C8 | 32-bit control, tons of GPIO, affordable, but needs STM tools āļø |
š Use-Case Recommendations
- š¤ Robotics: ESP32, STM32, Teensy
- š IoT: ESP32-C3, ESP8266, nRF52840
- š® Wearables/Compact: Seeeduino XIAO, ATtiny85
- šØ Creative Projects: RP2040 (with Pico SDK), Teensy (for MIDI, audio)
- š§Ŗ Experimental/Future-Proof: ESP32-S3, RISC-V based boards
š”Broadcast the signal ā amplify the connection.
