This is fixed / upgraded version of 1.0 revision. I had to re-design power lanes to allow for extra MicroSd slot on the back and usb on the front. Still compact, now more powerful!
Change list:
- Fixed resistors for ESP - now ESP can just be thrown there and would work
- Added MicroUSB for non-mobile applications
- Added reset 1.27x2 pin
- Replaced programmer pads with 1.27x2 pin on the left side. Works great.
- Added MicroSD slot on the bottom side.
- Moved power pads on the both sides. Now can use 2.54 90 degree pin.
What worked (or was tested)
- ADC - battery voltage is reporting correctly. It was hard to mess it up.
What does not work as expected:
- As much as I like LCSC - Original MicroSD slot is super-expensive on LCSC - after shipping + taxes. I found same one on AliExpress for $9.50 for 100.