ESP8266 Community Forum

- Wed Nov 11, 2015 5:24 pm #33726

it needs a pullup stronger than this one

+1 on your advise.
I agree, guessing there's 1K's on the back between 3.3V and the CH_PD & GPIO 2 side of the 10K's.
Then something to GPIO 0 (should be 10K). If not I can't see how it's going to work. As always, the devil is in the detail.

- Wed Nov 11, 2015 5:40 pm #33727 For the picture, I don't see any other connections other then the pin, so it need to be added externally.
In other words, this board is badly designed ...

- Wed Nov 11, 2015 10:05 pm #33740 I have a few of these. Look VERY closely at the traces.

The resistor on the left is 10k pullup on CH_PD. The resistor on the right is 10k pulldown on GPIO15, not GPIO2. This board has no resistor connected to GPIO2. the center "resistor" is 0 ohms - yes it's a jumper for when there isn't a 3.3v regulator added to the underside.

I add pullups to RESET and GPIO2 on the breadboard or board I plug into.

They're a nice little board - kind of wide for one breadboard - but a great adaptor for prototyping on 0.1" perfboard.

- Thu Nov 12, 2015 1:12 am #33755 Pictures of front and back:





Thanks for the replies!