arduino

Hey! starting my journy on Arduinio.When i tried to connect my joystick, and read the values from it,I gaet the whole range on X. My problem is with Y: Resting pposition indicates 0, and if i move the joystick down it shows the value 512. if I move it upwards, the value does not change. where...

Hi, I am working on a project to measure distance between two objects (A and B) using Arduino. Both these two objects are moving with time among other objects, but there is always a Line of sight available (assumed for now). After some research I concluded to use ultrasonic sensors. My idea is...

I record a timestamp everytime I receive a data frame in udp between an ESP8266ex and an ESP32 such that : if (packetSize) { frame_size = UDP.read(buffer_t, 30); if (frame_size > 0) { timestamp_receive = micros(); data_adc_serial[10] = timestamp_receive; for (int i = 0...

Hi, I am using this circuit and software to write to the NVRAM: GitHub - crmaykish/AT28C-EEPROM-Programmer-Arduino: Programming the AT28C64B or AT28C256 EEPROM chip with an Arduino Mega In order to avoid the hassle of disabling Software Data Protection for writes to the 28c256 EEPROM, I...

Hi All, I am designing a ATmega328P based PCB control board that has a function of sending and receiving discrete digital signals to and from a PLC. The PLC has sinking outputs. The PLC can accept sinking or sourcing inputs. I want the PCB to output Sourcing (PNP) signals to the PLC. (mostly...

Hi, i am trying to make MODBUS TCP SLAVE code based ESP32 platform. For modbus_TCP, I use this library: https://github.com/emelianov/modbus-esp8266 Plan is to have one dedicated task only for MODBUS_TCP. Please refer below extraction from compete code : void setup() { Serial.begin(9600)...

hello, i had a 9 inch monitor my car and after long time i open it and i want to use it's TFT display, i don't know how to use it but i know something: 1. it has 50 flat and one board on it, that merge the 50 flat from display and 10 flat from controller and send it to main board with 50 flat...

Hi, I am sending data from Arduino Uno to MATLAB. Below is my Arduino and MATLAB code. Arduino Code: const float sensorVoltage=A0; void setup() { Serial.begin(9600); } void loop() { float inputVoltage2=analogRead(sensorVoltage); float voltage2=5*inputVoltage2/1024; Serial.println(voltage2); }...

For a project to wink my popup headlight, I need to send 12v to one wire for 5 seconds, then 12v to another wire for 5 seconds after a button is pressed. I plan to do this using an Arduino nano, which uses 5v logic. I am wondering if I should use relays or MOSFETS for this project? I have a 12v...

I am a complete beginner at designing circuits and my English sounds like a 5-year-old talking. So, please beer with me. I was thinking of building an aquarium light. As plants need a full spectrum of light to grow properly, this is the selection of colours I came up with by watching many...

Hello, Working on an undergrad project and struggling to interpret the library built by espressif for ESP32 which makes using the Open AI APIs easier. There are some examples in the github for the chat element, but I am struggling to use the documentation to use the Audio Transcription and...

Hi, im working on creating a step counter using piezoelectric disks. The idea is that I want to use the disks as sensors and be able to read their voltage and current values with an Arduino Uno. Im also using a voltage sensor, the sensor that will be used is an ACS712 that can detect the flowing...

So there are many electronic 'air' drumsticks in the market, such as Aeroband, Freedrum, Senstroke, Aerodrums, etc. I wanted to know what sensors do these use or might have used to do what they do. For example, the Aeroband Pocketdrum have a pair of drumsticks with sensors, and a pair of foot...

Hi, everybody, I want to control two Peltier elements (up to 15V, max 6A each) with an Arduino. Right now, I am able to control them using PWM and a MOSFET (IRLZ44) to modulate an incoming constant voltage signal. By varying the amplitude of the PWM signal at the Peltier, I recognized, that I...

Hello All, I have auto switch for 3 Phase DOL starter with current sensor (using CT) and is working fine, i.e. is sense current and stop motor if it takes more current, it stops motor one phase failure, it working as expected, i just want to control it using ESP32 so that I read values and send...

I am working on a project that involves monitoring a cars battery. I can measure the voltage of it using a voltage sensor, a display and an arduino but that doesn't tell me much about the health of the battery. After researching, what seems to be the most popular way is putting a load onto the...

Hi everyone. Experienced electronics engineer here but just starting to dip my toe into the Arduino world. Working on a small project that requires logging data to as SD card. I am using a ESP32-WROOM-32UE board: https://www.sparkfun.com/products/17381 I have wired this up (correctly I...

Hi I am currently working on a project that requires me to convert user given speech input to text in real-time using an arduino(either locally or send the voice wirelessly to my laptop for recognition in my laptop). Is there a way I could implement this only by using an arduino uno and a...

I have an issue with a very simple small board I designed in EasyEDA pro (I'm a novice so if the answer is easy, my apologies). I'm not sure I correctly connected the MOSFET in the schematic. Reference to Datasheet: https://atta.szlcsc.com/upload/public/pdf/source/20140314/1457707013919.pdf Part...

Aim The first aim of this project is the design and implementation of a system that detects rain, automatically triggers an alarm or buzzer and switches on an electrical socket which turns on a water pump. The second aim is the design and implementation of a system that eliminates or lessens the...