ESP8266 Community Forum

- Sun Oct 12, 2014 5:42 pm #1554 I have a similar issue. Everything wired up correctly and I can even get the ESP to talk to my little python server and send GET.
Although I can't get my picocom or microcom to send commands via serial and I can't see the output from the ESP echoed back either, I can only see what I'm sending to it.

I have TX to Arduino RX and vice versa, after uploading a simple sketch I plug the pins back in and hit reset button.

I managed to get it once when I tried the first time, but now I can't get any info printed back to me, or send messages to it no matter what I do. What am I missing? :)

- Tue Oct 14, 2014 9:32 pm #1646

You need to drive GPIO0 and CH_PD at least, best is to tie all 4 central pins to +3.3V.

I gave this a shot and it still doesn't seem to respond to anything. With or without the logic level converter or on either of my two ESP8266 modules. I've also tried using the 3.3v output from a bad FTDI adapter to add a little extra capacity to my Arduino. Still nothing. Is it safe to say that the ESP8266 modules are dead?

- Tue Oct 14, 2014 10:54 pm #1650 I'm guessing here, but when you're plugged in via USB the serial port is probably in use (serial <-> usb). Hence the disconnect when a second device (ESP) tries to talk on the same bus.

Try powering everything from another source.

Also tie ch_pd, gpio0, gpio2 and rst to 3.3v (via a nice big resistor). Not sure why, but my notes say that's how it works

edit

You need to drive GPIO0 and CH_PD at least, best is to tie all 4 central pins to +3.3V.

this is why my notes say it works
Squonk knows things.

- Sun Oct 19, 2014 11:15 am #1772 Be sure to try both 115200 and 9600 baud when trying to connect. I spent 3 hours and almost gave up before realising that mine runs on 115200 baud.
Also, choose proper power source, as it can draw up to 300ma according to datasheet, so powering it from arduino is not always an option