Pycom Products / Development Boards / SiPy








SiPy Features

  • Powerful CPU, BLE and state of the art WiFi radio
  • 1KM WiFi range
  • MicroPython enabled
  • Fits in a standard breadboard (with headers)
  • Ultra-low power usage: a fraction compared to other connected micro controllers


  • Espressif ESP32 chipset
  • Dual processor and WiFi radio system on chip
  • Network processor handles the WiFi connectivity and the IPv6 stack
  • Main processor is entirely free to run the user application
  • An extra ULP-coprocessor that can monitor GPIOs, the ADC channels and
    control most of the internal peripherals during deep-sleep mode while only
    consuming 25uA

Sigfox Operating Frequencies

  • RCZ1 – 868MHz (Europe)
  • RCZ2 – 902MHz (US, Canada and Mexico)
  • RCZ3 – (Japan and Korea)
  • RCZ4 – 920-922MHz (ANZ, Latin America and S-E Asia)


  • 2 x UART, 2 x SPI, I2C, I2S, micro SD card
  • Analog channels: 8×12 bit ADCs
  • Timers: 4×16 bit with PWM and input capture
  • DMA on all peripherals
  • GPIO: Up to 24

Hash / Encryption

  • SHA, MD5, DES, AES

WiFi Networking

  • 802.11b/g/n 16mbps


  • Low energy and classic


  • Running at 32KHz


  • Node range: Up to 50km

Security & Certifications

  • SSL/TLS support
  • WPA Enterprise security
  • AES encryption engine


  • RAM: 512kb
  • Flash Memory: 4MB
  • GPIO: Up to 24
  • Hardware floating point acceleration
  • Python multi-threading

Sigfox Specification

  • TI CC1125NarrowbandTransceiver
  • Class 0 device. Maximum Tx power:

+14dBm (Europe)
+22dBm (America)
+22dBm (Australia and New Zealand)

  • Node range: Up to 50km
  • Sigfox pre-certified (October 2016)


  • Voltage Input: 3.3V – 5.5V
  • 3v3 output apable of sourcing up to 400mA
  • WiFi: 12mA in active mode, 5uA in standy
  • Sigfox (Europe): 17mA in Rx mode, 47mA in Tx mode and 0.5uA in standby
  • Sigfox (Australia, New Zealand and South America): 24mA in Rx mode, 257 mA in Tx mode and 0.5uA in standby


  • 55mm x 20mm x 3.5mm (Without Headers)


  • 7g
  • 31g (Packaged)
We recommend following products:
tRF BoB LE70-868
WiPy 2.0
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