ESP8266 Community Forum

- Thu Feb 26, 2015 12:13 pm #10810 Hi, i got my ESP8266 a couple of days ago and have connected it to a ds18b20 thermometer.

When i use my usb-serial board and connect everything like in this picture: (minus gnd to gpio0) i can look at the console in ESPlorer and i see that it connects to wifi, and send temperature to my server.

This also continues if i close the connection in ESPlorer.

But when i try to connect everything to a breadboard power-supply i have, nothing happens. The red led indicating power lights, but it does not send anything to my webserver.

I connect +3.3 to Vcc, GND to - and gpio0 to ds18b20. Am i doing something wrong here?
Here is a image of my setup: (only i use a power supply).

This is my first take at the ESP8266, so i apologize if this are stupid/obvious questions.

- Thu Feb 26, 2015 2:07 pm #10819 Make sure all grounds are connected.

- Sat Feb 28, 2015 4:48 pm #11006 I will try to connect everything again and make sure ground is connected.

And another question, i use ESPlorer to compile LUA-files to the ESP. I don't have to do anything else than clicking "Save to ESP" to save them permanently?

- Sun Mar 01, 2015 5:30 am #11026 you need to add a decoupling capacitor 10uf, between Gnd and vcc close to the esp.

it would work.