1 Aggressively Low Power with the ESP8266
Cited for CNLohr's ESP8266 experiments that send raw wireless frames without joining a network, allowing very quick transmissions and even coin cell power.
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Cited for CNLohr's ESP8266 experiments that send raw wireless frames without joining a network, allowing very quick transmissions and even coin cell power.
Linked to show an ATtiny85 driving an RGB LED directly from a coin cell, illustrating how little supporting hardware such a chip needs.