ESP32 vs ESP8266
ESP32 is the clear winner for modern IoT — dual-core CPU, Bluetooth, more RAM and more GPIOs, at only a small price premium. ESP8266 (NodeMCU) still makes sense on a very tight budget for simple Wi-Fi-only projects.
| Feature | ESP32 | ESP8266 NodeMCU |
|---|---|---|
| CPU | Dual-core 240 MHz | Single-core 80 MHz |
| RAM | 520 KB | 80 KB |
| Wi-Fi | Yes | Yes |
| Bluetooth / BLE | Yes | No |
| GPIO | 30+ | ~11 usable |
| ADC | 12-bit × 18 channels | 10-bit × 1 channel |
| Touch pins | 10 | 0 |
| Best for | Modern IoT / Bluetooth | Budget Wi-Fi projects |
Pick ESP32 DevKit V1
You want to build modern IoT, need Bluetooth, or plan to scale.
- Bluetooth + BLE
- More GPIOs & ADC channels
- Better community support in 2026
Pick ESP8266 NodeMCU
You need the cheapest way to put something on Wi-Fi.
- Costs less
- Simple projects
- Lots of legacy tutorials
FAQs
Can I use the same code on both?
Mostly — the Arduino API is similar, but Wi-Fi library imports differ (WiFi.h on ESP32, ESP8266WiFi.h on ESP8266).
Which is better for final-year projects?
ESP32 — it handles Wi-Fi + Bluetooth + heavier tasks required in modern IoT and robotics projects.
