Re:Ask HN: What do you do with your Raspberry Pi?
by c22 on Tuesday June 25, 2019 @03:56AM
(#20272003)
You're welcome! You might also be interested in MicroPython (if you write python) which runs pretty solid on esp32 and has a lot of batteries included. You can almost forget you're running on a micro.
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Re:Ask HN: What do you do with your Raspberry Pi?
by jonaswi on Tuesday June 25, 2019 @05:21AM
(#20272401)
Do you by chance have a link to a good development kit for the esp32? I checked and I'm a bit overwhelmed by the amount of different components one can get.
Re:Ask HN: What do you do with your Raspberry Pi?
by mabcat on Tuesday June 25, 2019 @09:44AM
(#20274065)
One that I like is commonly branded TTGO, a search for "esp32 ttgo" or "esp32 oled battery" will turn up some options.
This is a link to the exact one I bought since you asked: https://www.ebay.com.au/itm/283082902927 (not actually branded TTGO, it's a clone)
Why you might like it:
- it has an OLED screen on the board for debugging and status output
- it has a battery holder and charging circuitry for an 18650 on the back of the board for portable powering/"UPS"
- it breaks out all the GPIO lines onto pins
Why you might not like it:
- like many esp32 dev boards it's slightly too fat to go straight into a standard breadboard. You have to join two breadboards to get access to both rows of pins.
Re:Ask HN: What do you do with your Raspberry Pi?
by c22 on Tuesday June 25, 2019 @11:18AM
(#20275094)
Lately I've been playing with the Olimex esp32-poe [0]. It supports being powered over ethernet or lipo battery (or micro usb) and includes an SD card slot. If your application uses the ethernet, though, be sure to develop using a non-poe switch (or else power from the ethernet interface can leak over the usb programming interface and damage your laptop.)
[0] https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-sou...