I am trying to power 3 leds to blink with esp1 using an universal charger that can be adjusted to 3V.
I'm posting an image of the circuit as a file, and will aswel describe the pin connections below:
RX - LED
GPIO0 - LED
GPIO2 - LED
RESET - VCC
CH_PD - VCC
TX - open
here is what I tried and I'll start by the only case that worked:
Lipo battery: the 3 leds blink as expected, the battery is measuring about 2.8V
Arduino Uno 3.3V;
usb adapter for esp1 vcc and gnd pins,
universal charger (3.6V on voltimiter, drops to 3.1 when loaded)
All of these three will only light the leds pluged on the GPIOs and not the one connected to RX. And I should mention that they don't blink.
I preferebly would like this to work with a charger since I'm learning and testing.
anyone have a clue or can point me to a solution?
I was thinking if it's correct to connect leds directly to gpios and rx, tho I've seen people doing that in tutorials. And I am still confused that it works with the lipo battery, but not the other sources.