HCSRO4 problems
Hello, I am doing a project that tracks a train and switches the electromagnet on when the train is closed. I am using a code for the HCSR04 but the readings for distance are messed up, sometimes they...
View ArticleDCMOTOR test not working for Megapi or mbot Ranger
I have two mbot kits (ranger and the claw one that comes with a megapi) I was going to use to test automation routines. I was going to use Arduino to have students program and test their code on the...
View ArticleTime & Date Syncronisation of MKRWAN1310 over TTN
Hi All, I have the following issue: My Arduino MKR WAN 1310 needs to know what time and date it is. I have it successfully connected to the TTN, I can send and receive data - my cloud-dashboard shows...
View ArticleStarpuzzle: Detect current in seperate circuit with leds
Hey, I would like to build a star puzzle with many leds (45 LEDs). The LEDs can be switched on and off using switches. To solve the puzzle, certain LEDs should be switched on to form a star image. As...
View ArticleBldc motor starting problem
Hello dear friends. We have a problem about BLDC motor that initial speed value is zero and it cannot increase its speed. We have to push it with hand in order to make wheel rotate and...
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ESP32 rebooting periodically
Hi All, I'm working on a project with ESP32S3 PICO where I'm integrated 2-16bit ADC (ADS1115), Dwin Display, SD card, Pendrive. Recent Code: It is a split file voids were splitted. but the main...
View ArticleUse TV's IP address
Hello, Very new to Arduino. Am wondering if there is a way to control 6 different TV's on/off control's using their IP address's ? Reason is that each of their remotes control some of the other TV's...
View ArticleReal time interaction when data changes in firebase with esp32
I'm actually working on project with esp32 and firebase real time database where I store the temperature and the humidity and the led state, I have control over the led with an app when I press on it...
View ArticleNDP120 Processor Firmware Update problem
I have got stuck trying to update the NDP120 processor iwith Nicla Voice. I have unzipped the file and created a terminal but get the error message as below. Have copied the command from the manual so...
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Error in port monitor in Arduino IDE 2.1.1
Hello everyone! I'm facing a very serious issue. I opened Arduino IDE, connected my Arduino Uno, and encountered this error, even though everything was working fine before. I tried reinstalling...
View ArticleNano powers up but no port offered
I have two identical Nanos. Almost certainly clones. Both were working fine. Tools > Port showed COM7 and Device Mgr showed 'USB-SERIAL CH340 (COM7). But I reckon I've somehow damaged one. No port...
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ADXL345 false interrupt
I have an ADXL345 accelerometer integrated into a PCB, but it's triggering false activity interrupts approximately 4/5 times per hour. I placed the PCB on a table for 24 hours, during which there was...
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Relay circuit design
hi everyone. to control some loads with a STM32 board i designed the blow schematic. i want to know my design is ok? optocoupler is there because controller's power is isolated . relay: ALDP124W - 24v...
View ArticleReverse engineer dump
Hi there! I'm completely new to arduino, but not to programming. I bought a gadget that is not behaving as expected and to my surprise the brains of the operation is an Arduino UNO. After a bit of...
View ArticleAdding USK guide codes to Arduino ide 2.3.2
Hello, Nubie here. I picked up a Vilros Ultimate Starter Kit with an Arduino UNO in it. I down loaded Arduino 2.3.2. I then down loaded the Vilros USK guide codes and unzipped them. I'm on Mac. I'm...
View ArticleESP32-WROOM-32U Development Board OR Arduino uno R4 WiFi board
Good Day to to you all, Hope this note finds you well. As I am still fairly new in robotics, my attempt completing my 4WD robotic model has come to stall due to number of hardware/software...
View ArticleHow have MOVI SAY the CONTENTS of a string variable?
I've used Serial.println(...) to print the CONTENTS of a named string variable, and used recognizer.say(F("....")); to print specific words, but what I can't find anywhere is how to SAY the CONTENTS...
View ArticleTrigger Several Relay modules with only 1 Digital or Analog output
Hello all. I have a project that has 2 relay modules. The relay modules are 12V. There is a 12V source that powers both relay modules and the Arduino. To trigger the modules, they have a signal pin,...
View ArticleArduino micro 12 analog sensors
hello .this is my first topic about arduinos. first of all i dont know if my topic is in the right place , so forgive me if i am wrong. so , i have a project with an arduino micro , in which i will...
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I need help with a matrix for a keyboard
Hi ! Im made this shematic for a pcb and i don't know if my matrix is connected right . It supposed ro work with an arduino Micro (not pro micro) and a 2x7 mechanical switches matrix . Can anyone help...
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