My line follower robot motors not working
i have made a line follower robot using arduino uno, l293d motor shield, 2 ir sensors, 4 motors and 2 18650 batteries as power supply. the ir sensor is working fine but none of the motors spin when i...
View ArticleDelay and Millis together
My code has 7sec delays while valves open before the fans start. Im trying to use millis to have fans start for 30sec every 6 hours. Problem is delay and millis dont seem to mix, How do i keep the 7...
View ArticleArduino nano esp32 chatbot with websearch sentences help
Dear Arduino forum members, I have programmed a chatbot with some sentence, but i would like to add sentences that answer with a wifi connection to a web search motor like google or dogpile or bing,...
View ArticleWhy won't this statement compile?
if (inputString.substring(51, 53) !* ",,") { I get a "Compilation error: expected ")" before "!" token". If I switch the "!*" operator for "==" or "<" for example, it works. if...
View ArticleOne condition is not working
Please help. Below is code to oscillate stepper around centre position. Entire code is working fine except one condition. Given below void Arm() { Data_recieve(a, n); unsigned long now = millis(); if...
View ArticleAbs(-32768) behaves differently if argument is an array variable?
I'm having trouble putting this problem into words; I think the code and comments below should illustrate it clearly. The last print statement causes the behavior that I don't understand. abs(-32768)...
View ArticleMigrating Arduino SPI code to ESP8266 SPI code
Hi, I am trying to make Lora SPI Arduino code to work in ESP8266. I thought they are the same because it compile successfully. But it failed to communicate with the LORA module. What are the change or...
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Flashing Arduino using Avrdude ICSP LinuxGPIO from a Nvidia Jetson Orin Nx...
I am trying to program an Arduino Nano using AVRDUDE via the ICSP header on the Nano and the MOSI, MISO, and SCK pins on the 40 pin expansion header on the Orin Nx (running JetPack 5.1.1 on this...
View ArticleRumba+Marlin (errors compiling code)
I am trying to configure my Rumba32 with Marlin on arduino in order to use it on my ender 3. I am using marlin bugfix-2.0 and downloaded the stm32duino 2.6 since I heard the newest version (2.7.1)...
View ArticleTransporting Project to ATmega328-pu
I am currently working on transporting my 32-Band Audio Spectrum Visualizer Analyzer that I made from this website: 32-Band Audio Spectrum Visualizer Analyzer | Arduino Project Hub to an ATmega328-pu....
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Writing Android Apps to go with your Arduino Projects
I just posted this on another thread but I thought I would share it at large. Developing apps for phones has always been a scary subject for me. Java isn't my best language and some of the layout code...
View ArticleNano RP2040 A6 and A7 reading 0
Hi there, I've got a few nano RP2040 boards. I am struggling to get any of them to analogRead on A6 or A7. Here's the sample code: #include "WiFiNINA.h" void setup() { pinMode(A7, INPUT);...
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Initialising Error for esp 32 cam on serial monitor
I am new to esp 32 cam and I tried to upload my first program through examples, web server. All libraries are installed, preferences are done.connections are also made as per diagram.I have used a Usb...
View ArticleHTML Code Serialization Issue in Arduino (C++) with WebSockets and JSON
Greetings Arduino community, I am currently facing a challenge involving the serialization of HTML code within a JSON object in Arduino (C++), particularly when using webSockets. The objective is to...
View ArticleArduino mega connect with sensor
Hii , I connect arduino mega 2560 connect with Seeed sensor ,so i used this github:-GitHub - limengdu/Seeed-Studio-MR24FDB1-Sensor: Seeed_24GHz_mmWave_Radar_Sensor but I could not getting data of...
View ArticleBlink led no working serial available
I made a remote car, the code below works well but the problem is that the LED blinker doesn't work and goes silent when it's on. What is wrong? int in1 = 2; int in2 = 3; int in3 = 4; int in4 = 5; int...
View ArticleArduino Controlled Gas Valve for Nitrogen Purging
Hello all, I would like to build a nitrogen gas purging system in order to decrease the oxygen content of an already filled bottle. I would like to connect a solenoid valve to a nitrogen tank and then...
View ArticleHc-05 not working
please help me, my hc-05 still not working and not pairing with android. Even i already use the same code it still not working. when i send AT it doesnt come out OK. Anyone can solve this problem? 3...
View ArticleHow to use the internal RTC in Arduino Uno R4
I am trying to use the internal RTC in Arduino Uno R4. Uno R4 has an internal RTC and Arduino provides a library for that. A few questions arose while using the library. Here's a snippet of code from...
View ArticleArduino AC Dimmer for 2000 Watt Lamp
Hi I need an AC Dimmer circut for lamps between 1000 and 2000 watts. can anyone help? 6 posts - 3 participants Read full topic
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