# Pycom GPy > ESP32-based triple-network MicroPython board with WiFi 802.11 b/g/n, Bluetooth LE, and LTE CAT-M1/NB1 cellular. 4MB RAM, 8MB flash, 22 GPIO, breadboard-compatible. Ideal for global LTE IoT deployments. ## Quick Facts - **Brand:** Pycom - **Board Type:** dev-board - **Price:** ~$54.95 - **Product Readiness:** developer - **CPU:** Espressif ESP32 dual-core Xtensa LX6 - **CPU Architecture:** Xtensa LX6 - **CPU Cores:** 2 - **RAM:** 4 MB - **Flash:** 8 MB - **Power:** 3.3V-5.5V via pin headers or Pycom expansion board - **Operating Voltage:** 3.3V - **Dimensions:** 55mm × 20mm × 3.5mm - **Weight:** 7g - **Antenna:** U.FL/IPEX - **SD Card:** microSD ## Connectivity - **Wifi:** 802.11 b/g/n - **Bluetooth:** BLE 4.2 - **Cellular:** NB-IoT / LTE-M ## Open Source - **Firmware:** Yes - **Schematics:** No - **PCB Layout:** No ## Certifications FCC, CE, RoHS ## Compatible Firmware micropython ## Use Cases - cellular-iot - lpwan - asset-tracking - smart-metering - industrial-iot ## Components - **ESP32** (mcu): Dual-core Xtensa LX6 at 240 MHz with integrated 802.11 b/g/n WiFi and Bluetooth 4.2/BLE. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32_datasheet_en.pdf&ref=openhardware.directory&product=pycom-gpy&source=md-export) - **Sequans Monarch** (wireless-module): LTE modem supporting CAT-M1 and NB1 (3GPP Release 13) across 699-2690 MHz globally. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.sequans.com%2Fproducts%2Fmonarch%2F&ref=openhardware.directory&product=pycom-gpy&source=md-export) ## Protocols - **I2C**: SDA: P9, SCL: P10 - **SPI**: MOSI: P10, MISO: P11, SCK: P12 - **UART**: TX: P1, RX: P0 - **WiFi**: - **Bluetooth**: - **LTE**: ## GPIO Map | Pin | Name | Type | Functions | |-----|------|------|-----------| | P0 | RX | UART | digital-input, digital-output | | P1 | TX | UART | digital-input, digital-output | | P2 | GPIO | — | digital-input, digital-output | | P3 | GPIO | — | digital-input, digital-output | | P4 | GPIO | — | digital-input, digital-output | | P6 | GPIO | — | digital-input, digital-output | | P7 | GPIO | — | digital-input, digital-output | | P8 | GPIO | — | digital-input, digital-output | | P9 | SDA | I2C | digital-input, digital-output | | P10 | SCL/MOSI | I2C | digital-input, digital-output | | P11 | MISO | SPI | digital-input, digital-output | | P12 | SCK | SPI | digital-input, digital-output | | P13 | GPIO | — | digital-input, digital-output | | P14 | GPIO | — | digital-input, digital-output | | P15 | GPIO/ADC | — | digital-input, digital-output, analog-input | | P16 | GPIO/ADC | — | digital-input, digital-output, analog-input | | P17 | GPIO/ADC | — | digital-input, digital-output, analog-input | | P18 | GPIO/ADC | — | digital-input, digital-output, analog-input | | P19 | GPIO/ADC | — | digital-input, digital-output, analog-input | | P20 | GPIO/ADC | — | digital-input, digital-output, analog-input | | P21 | GPIO | — | digital-input, digital-output | | P22 | GPIO | — | digital-input, digital-output | ## Available Software - **[MicroPython]()** (open-source) ## Description ## Overview The Pycom GPy is a triple-bearer IoT development module combining Espressif ESP32 processing with WiFi, Bluetooth Low Energy, and LTE CAT-M1/NB1 cellular connectivity on a single breadboard-compatible board. The "G" in GPy refers to the cellular modem — this is one of the first compact MicroPython modules to integrate LTE connectivity directly on the board. The LTE modem supports both CAT-M1 and NB1 standards under 3GPP Release 13, covering frequency bands from 699 MHz to 2690 MHz for global deployment. This cellular connectivity is complemented by 802.11 b/g/n WiFi with a 1km range and Bluetooth Low Energy for short-range communication, giving developers flexibility to choose the most appropriate network for any given deployment scenario. The ESP32 SoC provides the computational backbone with dual-core processing, 4MB of PSRAM, and 8MB of flash, supporting Python multi-threading and hardware floating-point operations. The module exposes up to 22 GPIO pins with 8x 12-bit ADC, 2x DAC, multiple UART/SPI/I2C interfaces, and a microSD card slot — sufficient for most embedded IoT data acquisition tasks. A built-in ULP co-processor enables ultra-low-power sensor monitoring during deep sleep. The GPy is programmed via MicroPython using Pycom's open-source firmware, which extends the standard MicroPython library with cellular-specific APIs. An LTE antenna (sold separately) is required for cellular operation; WiFi and BLE use the built-in ceramic antenna. ## Where to Buy - [Adafruit](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F3612&ref=openhardware.directory&product=pycom-gpy&source=md-export) — 54.95 ## Resources - [product page](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F3612&ref=openhardware.directory&product=pycom-gpy&source=md-export) - [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F3612&ref=openhardware.directory&product=pycom-gpy&source=md-export) - [documentation](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.pycom.io%2Fdatasheets%2Fdevelopment%2Fgpy%2F&ref=openhardware.directory&product=pycom-gpy&source=md-export) - [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fpycom%2Fpycom-micropython-sigfox&ref=openhardware.directory&product=pycom-gpy&source=md-export) ## Tags `lte`, `cat-m1`, `nb-iot`, `esp32`, `micropython`, `wifi`, `ble`, `iot`, `pycom`, `lpwan`, `cellular` ## Images ![Pycom GPy](https://nbg1.your-objectstorage.com/openhardware-directory/entities/pycom-gpy/197179c97883.jpg) ![Pycom GPy](https://nbg1.your-objectstorage.com/openhardware-directory/entities/pycom-gpy/4bbdaba4a9f7.jpg) --- [View full device page](https://openhardware.directory/devices/pycom-gpy)