ESP8266 Community Forum

- Mon Jul 20, 2015 6:42 am #23702 OK - so I have no experience with this board so any help is much appreciated!



I have this board and found that it seems to have some power supply protection features. I wondered if anyone has this board (they're fairly common) and had a circuit diagram for it along with the (voltage regulator) that goes on the back.

Or shall I just bridge the VCC pin to the VCC on the chip and get on with playing with the board?

- Mon Jul 20, 2015 4:14 pm #23756 Others will jump in shortly with experience with this particular board but if you put 3.3V on the chip you should be good to play. I imagine the regulator tabs are to put one on if you need it.

Get you modules here:

https://www.banggood.com/custlink/KvGGhGF4wG

- Mon Jul 20, 2015 4:40 pm #23763

Or shall I just bridge the VCC pin to the VCC on the chip and get on with playing with the board?

In default configuration, the input & output pins of the regulator are already bridged by the 0 ohm resistor on the top side (bottom center). So if you don't want to mount a regulator, just solder on the ESP module and you are set (don't apply more than 3.6V to the power pins in this case).
If you want to add a regulator, just solder a suitable SOT-89 LDO on the back and remove the 0 ohm resistor.

- Tue Jul 21, 2015 3:50 am #23799 I've some of those and use them without a regulator. I like them, not least beacuse they're so cheap. The most common complaint about this board is its so wide that they're not so easy to use with a breadboard as they cover all the holes. What i do is use header pins longer than the board and as the VCC and GND are both at one end you can then short all the extra pins together and connect to the supply rails and then for simple prototyping you often don't need to use a breadboard -

IMAG1428a.jpg

(that one also has a couple of capacitors across the supply, i think the 100nf one probably isn't necessary as someone said there already is one under the ESP12s metal cover)

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