Solar Powered PV PI HAT Enables 24/7 Off-Grid Operation for Raspberry Pi

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https://www.electronics-lab.com/solar-powered-pv-pi-hat-enables-24-7-off-grid-operation-for-raspberry-pi/

The PV PI HAT adds MPPT solar charging, smart power control, and 5V regulation to run Raspberry Pi and other SBCs continuously from a 12V LiFePO4 battery.

Sonnet Off-Grid Device, The Smartphone Walkie-Talkie

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https://www.electronics-lab.com/sonnet-off-grid-device-smartphone-walkie-talkie/

At Sonnet Labs, a group of avid outdoor enthusiasts aim to democratize mobile communication with technologies that enable smartphones to send text messages, image data, and GPS locations without Internet connectivity, cellular coverage, or satellite reception. No need for cellular grid with Sonnet Therefore, they launched their product, Sonnet, the smartphone walkie-talkie! Sonnet is a wireless […]