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-2 votes
1 answer
835 views

how to save float with 3 decimal places [duplicate]

i am transmitting sensor data from my atmega328p to my esp8266. The Sensordata has 3 decimal places. The esp8266 sends this data to my pc and there I see only two digits. This is because the data is ...
kaan's user avatar
  • 1
0 votes
1 answer
972 views

Global Variable does not Change when Value is set within Boolean Function

I have a boolean function which contains a string. In my main project this string is extracted from a website using an ESP8266 which is compatible with the Arduino IDE. I need to convert this string ...
Lachlan Etherton's user avatar
4 votes
2 answers
4k views

How to pass variables to custom callback functions

I want to use the Ticker library of the ESP8266 Arduino core to (asynchronously) delay the switch of a pin to a desired state like below. I am not sure about the "here is" function definitions and I ...
milkpirate's user avatar
0 votes
4 answers
3k views

Wemos D1R2 - Onewire 2 DS18B20 passing to variable

I'm a beginer, did some tests with Uno and now have a Wemos D1R2 on my hands... I'm building a sort of weather station that will send data to thingspeak.com and log this data there. I managed to ...
Diego's user avatar
  • 9
2 votes
2 answers
16k views

'content' is not captured

I try to make a variable that can be modified from the server, using and ESP8266. #include <ESP8266WiFi.h> #include <WiFiClient.h> #include <ESP8266WebServer.h> #include <...
Mihai Barbu's user avatar
1 vote
3 answers
1k views

use button to select variable

i have a need to use 3 buttons a a simple option/variable selector at sketch start up ... Pretty much at startup , script must wait for button press ( one of 3 ) , when button is pressed , use that ...
Greg Griessel's user avatar
0 votes
1 answer
5k views

Best way to assign value to lot of variables

I'm building web based remote control system for esp8266. In arduino IDE, using the ESP libraries. To, send data to the server, I'm using http post. For some settings, I need to transfer 30 or so, ...
Nah's user avatar
  • 37