3 ms·
I also like the ESP32, but low power seems like a stretch... that thing runs very warm. I suppose if your benchmark is an i386 or a Raspberry Pi, then sure, it'
by ohazi 5y ago
I also like the ESP32, but low power seems like a stretch... that thing runs very warm. I suppose if your benchmark is an i386 or a Raspberry Pi, then sure, it's low power, but compared to other microcontrollers with comparable wireless peripherals, it seems to consume more power than any of them.
- numpad0 5y agoIt’s absurd, as a microcontroller. Like ~300mA max which is like 1W. Though only in short bursts if planned wisely, and also there are worse ones. I believe Nordic nRF does 2A bursts that are to be taken care of by a larger than usual bypass cap.
- ohazi 5y agoThat doesn't sound right... all of the Nordic designs I've seen have been exceptionally low power. The internal LDO / DC-DC blocks for running directly off of a battery are sized for <100 mA. Even with bypass caps, 2A spikes seem like the wrong order of magnitude for a chip that can run off of a coin cell. I have an nRF52840 design, and I've never seen it draw more than low ~tens of mA during BLE transmit spikes, even at the maximum transmit power setting.
- deleted 5y ago[deleted]