M5Stack Stamps

M5Stack Stamps are ultra-compact ESP32-based modules designed for direct integration into custom PCBs and product enclosures. They offer the processing power and wireless connectivity of the ESP32 in a castellated form factor that can be soldered onto a carrier board without through-hole connectors.

The range includes Stamp C3, Stamp S3, and Stamp PICO variants, each based on a different ESP32 series with varying feature sets including WiFi, Bluetooth, and USB support. All are compatible with the Arduino IDE and UIFlow.

M5Stack Stamps are used by makers and engineers moving from prototyping to small-batch production, embedding ESP32 connectivity into custom hardware designs, wearables, IoT sensor nodes, and educational kits where a standard development board form factor is impractical.