ESP8266 Community Forum

Hello
I'm new here in the forum. I hope someone can help me

Currently i'm experimenting with the ESP8266. Already tried the Nodemcu successfully.
This one: https://en.wikipedia.org/wiki/NodeMCU#/ ... IT_1.0.jpg

But i want to experiment with battery powered usage. I already read something that ESP8266 is
power hungry for batterys.
Especially the Units with integrated USB, Voltage Regulator, LEDs etc...


=> i tried to buy ESP8266 (ESP-12) and buyed Adapter Plates. But i'm an extrem soldering newbe. And Yesterday i tried to solder the ESP-12 to the Adapter Plate (I had 5 Units), and no one works .

Now my Question:
I know the ESP8266 Gizwit Board. ESP8266 Gizwit
And this one comes already finished soldered.

Maybe it's easier for me, to buy this one, and desolder/remove the Voltage Regular, the LDR and an RGB LED.
=> Then i would have an simple ESP8266 incl. Adapter Plate.
=> Maybe cutting the power of the Voltage Regulator, LEDs, LDRs is simplier as soldering of a new ESP12 to Adapter. :-/

Can someone confirms that in this case i have an equivalent to an ESP12 with Adapter Plate? or I'm wrong?
I know that then i have to take care of 3.6V.

P.S. or does anyone know an alternative ESP8266 board, which is already soldered, but doesn't have Voltage Regulator etc?

Kind Regards
Stefan

I'd rather suggest you find out why your boards are not working and fix them, as desoldering things is usually a lot trickier than to solder them.

A likely cause for your problem could be the ESP-12 adapter PCB itself, there are defective ones being sold.
Of the 3 resistors on the bottom top side, the middle one should be a 0 ohm one (i.e. a dead short). Some boards have a 10k resistor mounted (like the other 2).

You can check if your boards are affected by either comparing the labels (the one in the middle should read "000", the other 2 "103") or with a multimeter. To fix the boards, just desolder the resistor and short the pads with a blob of solder or a piece of wire.

If that's not the case, you should check adjacent pins of the ESP-12 you soldered for shorts with a multimeter. If there's a bridge, just heat both pads with your soldering iron and quickly pull it away from the ESP-12.

Also make sure, you have all the requisite pull-up/down resistors (GPIO0/2, RST, CH_PD up, GPIO15 down) and a sufficient 3V3 supply.

btw, the ESP-201 would be what you are looking for.

but, as lethe said, you either got defective ESP-12s or just weren't aware of the hw difference between "complete" systems like nodemcu and "bare" esp boards.