3 ms·
Receipt for LoRa is low power, its transmission that kills the battery
by kingkawn 1y ago
Receipt for LoRa is low power, its transmission that kills the battery
- arghwhat 1y agoFor any radio system, receiving continuously also kills battery, just not as fast as transmitting does. Low-power requires you to turn the receiver off for extended periods of time, but what you can do there is limited by how interactive the device needs to be, and how much the power the transmitter is willing to waste on retries/longer preambles. For proper low-power (e.g., devices with ≥ 1 year battery life on small batteries), you're likely to need sleep periods of minutes to hours, or only waking up on physical interaction.
- tonyarkles 1y agoSort of. Keeping the receiver on and listening 24/7 is going to still use significantly more current than not having the receiver on and putting the microcontroller into a deep sleep mode. The approach in my sibling comment explains how IoT LoRaWAN devices are able to use ~0 current the vast majority of the time and run off, say, a CR2032 battery.
- kingkawn 1y agoOk great point if the device is on it will technically use more power than off, true
- numpad0 1y agoReceiving is just transmitting nothing to see how it's getting disturbed
- subscribed 1y agoWow, that's actually very poetic way to put it. Thank you.