Top new questions this week:
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In Arduino IDE, I get this error “Error resolving FQBN: getting”, when compiling a sketch. Can anyone help me get around this problem? I am using the Arduino IDE. I have installed the …
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I have an ESP8266 project that requires setting the SSID and password for a network via an Access Point. Everything works fine, the only issue is if you send incorrect credentials to the access point,…
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I am having an electrical conductivity sensor (Sensorex CS150 with three tinned wires Red, Black and white sensorex.com/product/sensorex-cs150-12-mm-graphite-contacting-conductivity-sensor/ ). …
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I just bought a microphone for my Ardoino Nano 33 BLE. The mic can use both Analog and Digital input. Here is the mic and how it’s connected. Here is the code where I read the input int sensorPin = …
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I have a simple question regarding the new version of Wemos D1 Mini Pro v2.0 and specifically about its load sharing circuitry. Schematic is here : www.wemos.cc/en/latest/_static/files/…
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I’m using an ESP8266 with deep sleep + wake up when RST pin goes low. #include <ESP8266WiFi.h> #include <WiFiClient.h> #include <ESP8266HTTPClient.h> WiFiClient client; HTTPClient …
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Greatest hits from previous weeks:
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When you have a board in your hand but you don’t know is it working or not, how to verify if it’s working or dead?
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I’d like to make three arrays of the same length. According to the documentation, Arrays must be defined as int myArray[10]; where 10 can be substituted for a known length (another integer), or filled …
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i have an arduino UNO with RS485 module. I have made this connection: And i have an problem with communication of this module with power meter “InePro PRO-1Mod” (datasheet) over ModBus protocol. I …
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I have a problem. I want to make a car with a motor, front lights and rear lights. I want to run them at the same time but in different loops. This is my code. const int red1 = 10; const int red2 = 11;…
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How would I split part1 into 2-3 digits and put them into num1, num2, and num3? int FMSTATION = 10250; int update_display() { int fm_station = FMSTATION ; int part1; int part2; part1 = (…
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I’m looking to convert an int value to a char array. currently I’ve found the following will return [number] int num = [number] str = String(num); str.toCharArray(cstr,16); Serial.println(cstr); …
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I made an awesome program the other day, and I wanted to upload it to my Arduino. After clicking the upload button, some mean dude named avr came along and stopped me, saying: avrdude: …
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