Heltec-Aaron-Lee
Is it possible to turn off battery power with a switch?
With Adafruit boards, you can disable the battery charging circuit by tying their EN pin to ground. This allows you to add a slide switch that will turn off the device; the battery doesn't power the device, and does not drain either. With my first prototype using the esp8266, I tried the same thing, but the EN pin is actually Chip Enable. Tying it to ground still allows the battery to supply power to external sensors on the 3.3 regulated pin.
I had to route the negative lead of the battery through a slide-switch before connecting it to the battery socket on the board. Is there a better way to do this?
I would also like to know if there is best way. @Heltec-Aaron-Lee can you please inform us ? Thanks in advance!
If I'm thinking correctly, reading the schematics it says:
CHIP_PU is the ESP32's enable/reset pin. It must be pulled high to turn the ESP32 on.
So to keep the board off the RST pin should be connected to GND. But is possible that doing this way, there is always some consumption. So I would like to get official feedback to know what is the best way to do this when we need to develop a device that is battery powered and needs an ON / OFF switch.
@randallamoore you may need series connection an SPST on the battery line.
