This video explores Walter, a new open-source cellular board that combines GPS, LTE-M, NB-IoT, WiFi, and Bluetooth in one ultra-low-power module built for real-world IoT deployments. I test its capabilities in live environments and sit down with its creator to unpack how it's changing the game for developers, from SIM options to deep sleep power efficiency. If you’re building anything from smart collars to off-grid trackers, this is the cellular breakthrough you've been waiting for.
