Pycom LoPy4

Overview

The Pycom LoPy4 is a quad-network IoT development module combining Espressif ESP32 computing with WiFi, Bluetooth LE, LoRa, and SigFox connectivity. The "4" in LoPy4 denotes the fourth-generation board, introducing LoRaWAN Class A and C support alongside SigFox multi-region capability and the ability to function as a nano LoRa gateway — receiving from multiple nodes simultaneously.

The onboard Semtech SX1276 LoRa transceiver operates at 868MHz (Europe), 915MHz (Americas/Australia), 433MHz, and 470-510MHz for Asian markets, with output power configurations up to 20dBm. LoRa achieves ranges up to 40km in line-of-sight conditions, while SigFox extends to 50km. WiFi reaches 1km and Bluetooth LE handles short-range connections — giving developers four complementary wireless options from a single 55mm × 20mm breadboard-compatible module.

The dual-core ESP32 provides 4MB PSRAM, 8MB flash, hardware floating-point, and a ULP co-processor for ultra-low-power sensing tasks. Twenty-four GPIO pins are exposed with 8x 12-bit ADC, multiple UART/SPI/I2C/I2S interfaces, and a microSD slot. Security is handled in firmware: SSL/TLS 1.2, WPA Enterprise, AES, SHA, MD5, and DES algorithms are all supported.

The LoPy4 ships with 2 years of SigFox connectivity included and is FCC (2AJMTLOPY4R) and CE certified. It is programmable via MicroPython using Pycom's open-source firmware and works with the Pymakr IDE for a productive workflow.