Course completion work ideas - graduation
Good morning, I'm finishing my degree in computer science and I need an idea for a topic for my term paper. I found some on the internet but they are very simple. Observation: I would like to do...
View ArticleInterfacing LVGL and arduino library
Hi, I used SquarelineStudio to make a UI, basically something like last time, just more prettier. For now 2 Screens, one Welcome screen, and main screen gauge. I'm facing a bit of issues when I...
View ArticlePthread_create() exceptin
Hello, i have this function which recieve POSTs from a client including commands to controll the RGB accordenly. void handleLEDdata(){ // Send the response to the client cJSON *json =...
View ArticleError: No connection established Compilation error: No connection established
I am new to arduino's!!! Help please!!! int enA =9; int in1=8; int in2=7; void setup() { // put your setup code here, to run once: pinMode(enA,OUTPUT); pinMode(in1,OUTPUT); pinMode(in2,OUTPUT);...
View ArticleRead rfid 125khz and NFC using esp32
I'm planning to build an access control system using an ESP32 microcontroller and integrating RFID 125kHz cards along with NFC technology. However, I'm facing a dilemma regarding sensor compatibility....
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LED P10 (32x16) with esp32
i am integrating ledp10 single color matrix(32x16) using this connection and code is an example od dmd32 library-`#include <DMD32.h> #include "fonts/SystemFont5x7.h" #include...
View ArticleRelay 5v module randomly worked
Our project is to make vending machine. We have ir sensor connect to Arduino uno r3 and we have 2 servo that power input is from regulator(only 2 servo power input is from regulator) and relay 5v 1...
View ArticleEsp32 cam webserver protected
i have an esp32 cam but i would like to acess it remotly but i dont want others to be able to acess it so i want to add a password how would i do that? 1 post - 1 participant Read full topic
View ArticleQuadcopter takeoff failed
hello. I am a college student who is building a drone with Arduino. Frame: DJI F450 Board: Arduino Due imu: mpu9250 Before flying the drone, the drone's movement on the ground is strange. Check ESC...
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I have Questions on PCB's Pad?
In order to create some custom pads for my PCB, I have given this command: 40R20 command from Orcad Package and have got the following pad (Fig-1) on a screen of 10 mil/div. My questions are: 1. What...
View ArticleDeclaring analog pins as digital and setting up with a loop
I have a project where I simulate up to 26 wiegand readers using an arduino mega. I use this library for the wiegand output: GitHub - castrofernando/WiegandOutput-Arduino: Wiegand output library for...
View ArticleWe were not able to create the IoT Blink controller system
Error code builder/opt/libraries/seeed_arduino_rpcwifi_1_0_7 Not used: /home/builder/opt/libraries/wifiespat_1_4_3 Not used: /home/builder/opt/libraries/wifinina_1_8_14 Not used:...
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Send temperature data to MicroSD and Arduino IOT Cloud
I've built an Arduino temperature sensor with an LCD screen and I now want to send the data to a MicroSD card for storage and I want to send the data to the Arduino IOT cloud so I can view the data in...
View ArticleI can enter if but not execute statements inside
I am using an arduino mega 2560 and when sending string through the uart String respuesta=""; while (Serial2.available() > 0) { char receivedChar = Serial2.read(); if (receivedChar == '\n') {...
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For syntax FRAM
I've recently received some FRAM memory and am trying examples in a few different libraries to try and get my head around how best to use it. One library that I have tried is: GitHub GitHub -...
View ArticleIssue using mutex on Arduino Uno R4 Wifi with Phillip Stevens FreeRTOS libary
When uploading the mutex example provided by Phillip Stevens FreeRTOS Library (Arduino_FreeRTOS_Library/examples/Mutex/Mutex.ino at master · feilipu/Arduino_FreeRTOS_Library · GitHub) to the Arduino...
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Reading data from energy meter using RS485 to TTL converter using Arduino...
I need to read data from the holding register of the energy meter. The registers were starting from 40101 float type. I tried to fetch the data using the RS485 to USB, where I could see the meter...
View ArticleRepeat Sending with NB-IoT-GNSS Shield
Dear community, I’m working on an IoT project using the Arduino Portenta H7 Lite Connected and the corresponding NB-IoT-GNSS Shield to build a remote device IoT-Device: Portenta-h7-lite...
View ArticleNeed help with Pairing two or multiple Nodemcu V3
I want a NodeMCU to be a master and another NodeMCU to be a slave. When I press a button, I want the master NodeMCU to broadcast its ID/variable, and I want the slave NodeMCU to receive the value....
View ArticleHelp with quick reversing dc motor
Morning ^^ I'm having an issue with my dc motor, when the motor change direction quickly it starts making noise and doesn't spin, I was reading about it and got to a snubber circuit or a h-bridge...
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