The SiPy from Pycom is a multi-network IoT development board combining Sigfox, WiFi, and Bluetooth (classic + BLE) on a single ESP32-powered module. Programmable with MicroPython and the Pymakr IDE, it enables rapid IoT application development with network failover for added resilience.

This is the RCZ1/RCZ3 version for Sigfox zones covering Europe (868 MHz), Japan, and Korea. The SiPy can also operate in FSK mode for direct device-to-device communication, with another SiPy acting as a Nano-Gateway to forward data to the cloud via WiFi.

Key Features

• Triple Connectivity – Sigfox (+14 dBm), WiFi 802.11b/g/n (1 km range), and Bluetooth (classic + BLE)
• ESP32 Dual-Core – Dedicated network processor + free application processor
• MicroPython – Program in Python with the Pymakr IDE
• Ultra-Low Power – ULP coprocessor monitors GPIOs/ADC in deep sleep at 25 µA
• Up to 50 km Sigfox Range – Long-range LPWAN connectivity
• Breadboard Compatible – Standard pin spacing (with headers)
• Certified – CE, FCC, IC, and RCM

Specifications

• MCU – Espressif ESP32
• Sigfox Zones – RCZ1 (868 MHz, Europe), RCZ3 (Japan, Korea)
• Sigfox Tx Power – +14 dBm (Europe)
• WiFi – 802.11b/g/n, 16 Mbps
• Bluetooth – Classic + BLE
• RAM – 512 KB
• Flash – 4 MB
• GPIO – Up to 24
• ADC – 8× 12-bit channels
• Interfaces – 2× UART, 2× SPI, I²C, I²S, microSD
• Timers – 4× 16-bit with PWM and input capture
• Security – SSL/TLS, WPA Enterprise, AES/SHA/MD5/DES encryption
• Input Voltage – 3.3–5.5 V
• 3.3 V Output – Up to 400 mA
• Dimensions – 55 × 20 × 3.5 mm (without headers)
• Weight – 7 g

Power Consumption

• WiFi Active – 12 mA
• WiFi Standby – 5 µA
• Sigfox Rx (Europe) – 17 mA
• Sigfox Tx (Europe) – 47 mA
• Sigfox Standby – 0.5 µA

Ideal For

• Sigfox LPWAN IoT deployments in Europe, Japan, and Korea
• Multi-network applications with WiFi/Sigfox failover
• Remote sensing and environmental monitoring
• Rapid MicroPython prototyping