ESP32 vs ESP8266: Which Wi-Fi Board for Your IoT Project?
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For internet-connected projects, two boards dominate: the older ESP8266 and the newer ESP32. Both are inexpensive and Wi-Fi capable — but they suit different builds. Here's how to choose.
The key differences
| ESP8266 | ESP32 | |
|---|---|---|
| Wi-Fi | Yes | Yes |
| Bluetooth | No | Yes |
| Usable pins | Fewer | More |
| Processing | Single core | Dual core |
| Best for | Simple Wi-Fi sensors | Richer IoT, BLE, more I/O |
When the ESP8266 is enough
If your project is a single sensor reporting over Wi-Fi — a temperature logger, a smart switch — the ESP8266 does the job for less. It's a great, cheap entry to IoT.
When to choose the ESP32
Pick the ESP32 if you need Bluetooth, more sensors and pins, more processing power (for tasks like reading a camera or running edge logic), or simply room to grow. For most new projects today, the ESP32 is the safer default.
Not sure which your build needs? Ask VoltIQ with your project idea and it'll recommend the board and a matching kit. Both ship across India with COD and GST invoice.