Monday, May 19, 2025

The unPhone Places a Hackable, Academic, ESP32-S3-Powered LoRaWAN Gadget in Everybody’s Fingers



Sheffield-based hobbyist electronics specialist Pimoroni has introduced a brand new instructional Web of Issues (IoT) gadget, powered by an Espressif ESP32-S3 and developed in partnership with the College of Sheffield: the LoRaWAN-capable unPhone.

“Telephones. They’re miraculous! However: they burn up scarce minerals which might be typically mined in peril. The server clouds they join to make use of 1000’s of instances extra vitality than bitcoin. And so they steal our consideration, leak our knowledge, compromise our privateness,” the corporate explains of its newest {hardware} design. “Maybe we do not want a miracle in our pockets each minute of the day? unPhone is not a cellphone different nevertheless it has the potential to interchange a few of the sledgehammers we presently crack nuts with (and hold extra of your knowledge below your individual management).”

The unPhone, developed in partnership with the College of Sheffield and Gareth Coleman, places a 3.5″ 320×480 touchscreen show above an Espressif ESP32-S3 microcontroller module with 8MB of pseudo-static RAM (PSRAM) and 8MB of flash reminiscence. Along with the ESP32-S3’s built-in Wi-Fi and Bluetooth Low Vitality (BLE) radios, the non-cellular system additionally features a LoRa radio designed for license-free wi-fi communication over LoRaWAN.

Elsewhere on the system, which is designed to be programmed in both CircuitPython or C++, is a vibration motor for haptic notifications, accelerometer and magnetometer sensors, SD Card storage growth, infrared LEDs — “for surreptitiously switching the cafe TV off,” the corporate jokes — and a 1.2Ah lithium-polymer battery chargeable over the gadget’s USB Kind-C connection. A bundled growth board, in the meantime, offers two FeatherWing-compatible sockets for added {hardware} and a small prototyping space.

Whereas Pimoroni has solely now made the system obtainable for normal buy, the unPhone is not a brand new design: the College of Sheffield has been utilizing it for a number of years, and Hamish Cunningham, professor within the College’s division of pc science, has developed an open-license 300-page textbook across the {hardware}.

Elsewhere on the system, which is designed to be programmed in both CircuitPython or C++, is a vibration motor for haptic notifications, accelerometer and magnetometer sensors, SD Card storage growth, infrared LEDs — “for surreptitiously switching the cafe TV off,” the corporate jokes — and a 1.2Ah lithium-polymer battery chargeable over the gadget’s USB Kind-C connection. A bundled growth board, in the meantime, offers two Feathering-compatible sockets for added {hardware} and a small prototyping space.

Extra data is offered on the unPhone web site.

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