1. B

    Arduino with ps2 for 2-motor control

    I am trying to program a UNO to control a robot to move forward and back using a ps2 with joystick. I want to control the speed by moving the js on x-axis and direction by moving js on y axis. The foll. code works but without js controls. Now want to include js controls. Any help appreciated...
  2. zazas321

    How does LoRa work in ESP32

    Hey. I want to try to make low power device based on ESP32 to send readings to the server. I have come across this tutorial that describes how to get lora working on ESP32: https://randomnerdtutorials.com/esp32-lora-sensor-web-server/ Lora reicever function: void getLoRaData() {...
  3. E

    MOSFET gate , offset PWM questions

    Hello! A little about me , i haven't formally studied electronics, i do not own or have access to an oscilloscope. I have been researching about MOSFETs to use an IRLZ44N as a switch in a basic boost converter, on the IRLZ44N datasheet Vgs(th) = 1v to 2v, as i undertand this Vgs(th) is the V...
  4. N

    how to join two different codes (ARDUINO)

    I’m dabbling in Arduino and having trouble running two sketches on my Arduino UNO simultaneously. The first is about a program that reads temperature and relative humidity and the second is a program that reads barometric pressure. Both programs work independently, but when I try to combine the...
  5. H

    Sun tracking using Arduino

    I want to make a programe on arduino with which I could compare inputs from 2 LDR and move the servo motor (sg 90) according to the values. At the end my main task is if both the sensors are in dark for specified time the motor should move back to its original position. I need help in...
  6. circuitdiver

    Arduino Audio Shield PCB Design Considerations

    I'm using the Adafruit Metro M4 (Arduino compatible) microcontroller to build a MP3 player. I'm using the following components: Adafruit Metro M4 feat. Microchip ATSAMD51 Adafruit VS1053 MP3/AAC/Ogg/MIDI/WAV Codec Breakout SparkFun 16 Output I/O Expander Breakout - SX1509 I2C Encoder V2...
  7. M

    Triac-controlled motor problem

    I have a bit of a problem with controlling a universal motor with a Triac. I have built the circuit shown in the attached picture (designed by someone else) and then I've written the software to control the firing of the Triac from an Arduino. It all works very well except that every now and...
  8. Elusive

    How to make a momentary switch deliver a pulse on one circuit, while also closing another circuit until it is pressed again

    It has been over a decade since I've done anything circuit related, and I found out the hard way that I have forgotten basically everything. I am trying to make a buttonpanel acting as an input interface for PC using an arduino. I want to have 32 different momentary inputs in a 4x8 matrix. My...
  9. Tigera

    AD9850 Generate Random Fixed Frequencies Controlled By MEGA328P-AU

    Hey I've made a circuit with AD9850 Controlled by ATMega328P-AU with serial interface. Here is the Schematic Link. Schematic I've Tested Prog with AD9850 Module (HC-SR08_Module) and code is working. Circuit use a 3.7v Single Cell Li-Po Battery and MT3608 to Boost 3.7v to 5v. The...
  10. A

    Tie into a monitored Alarm Panel

    Hello all, I'm new to this forum but have a question I'd like to see if I can get some answers to and guidance on how to proceed. I have a diy maker project using an ESP8266. In short, it sounds an remote chime and I get a SMS text when a magnetic door switch (reed switch) is opened. I've...
  11. T

    Soundboard and Servos (Jurassic Park Model)

    Hello! I recently built a scale model of the Jurassic Park Entrance gates but when I was getting ready to finally be done with it I had the thought I could add a servo or two in order to make the doors automatic. In researching this I decided, well, why don't I add a soundboard and some mini...
  12. A

    Dying for a 1 wire switch IC similar to Maxim DS2413

    Well , I was looking for a slave addressable ic for 1 wire protocol which can control a single GPIO. The RS2413 is the most right IC I could find suiting my needs (however I need only 1 gpio). But in my country, I'm having difficulty finding this IC, also, if there is a little cost effective...
  13. SaMirakle

    Need Help Decoding Automotive CAN Bus Extended Frame Bits

    Hi everyone, I don't know why but I'm having a tough time decoding CAN Bus data frames, even after looking at many sources showing bit field diagrams of how the data is supposed to be structured. Background on project/goal My main goal is to connect directly to an electronic turbo actuator...
  14. snake0012

    AD8232 HELP

    Hi guys I am on a little project (ecg with an arduino) I followed all the topics , the diagrams to wiring , electrodes placement.... But never I can get an classic ECG GRAPHIC Please help Best regards AD8232 Gnd-gnd 3,3v -3,3 v Output -a0 Lo- dig 11 Lo+- dig 10 Sdn- none Code: Void setup() {...
  15. R

    Control TECs with Arduino and MOSFET

    Hi everyone, I've been reading many forum posts and articles about MOSFETS and reading their datasheets. Although I'm getting more comfortable with the topic, I still have a lot of questions. As I'm running out of time due to a timeline on my project, I decided to ask for help and see if what...
  16. snake0012

    Pressure sensor

    Hi guys I need your help to making work the pressure sensor MPS20N0040D (module with hx7110) , I uploaded the sketch , but I can't get a right graphic , it's seems to be not fonctional !!! It's the same graphe with & without the module connected To the arduino !!! Please help Best regards
  17. kjrr.2136

    Arduino Wifi/IR Universal remote with "ADD" button

    I want to build a ir cloner and transmitter for electronic devices (tv, home theatre,AC,etc) with NODE MCU so that i can control all the devices over wifi with my phone. There are may tutorials for making this type of project but all of them include manually inputting the "ir code"(not sure...
  18. H

    Custom standalone atmega32u4 pcb showing up as unknown device

    Hi there, I am having issues with a standalone atmega32u4 project i've been working on and was hoping someone would be able to help :) I have designed a pcb that uses the atmega32u4 to recreate the arduino leonardo. I have been able to successfully burn the Arduino bootloader onto the chip...
  19. Andrew Rudd

    wiring an arducam with the power line on a transistor

    I've set up an arducam mini 2MP plus with a nrf52DK (similar to an arduino for this set up) to take pictures. Ive got the board and camera working when the camera is wired with the VCC line and GND wired directly into the boards 3.3v line and ground pins. The arducam uses about 100 mAmps when...
  20. Kadav

    K thermocouple values not stable (Max31855) / Information on Relay

    Hello I have a max31855 Datasheet , using arduino (1.8.13) and I am seeing the values of the thermocouple bouncing, I would love to say that the problem lies in the code but the code uses a library that is a bit hard for me to understand . Or that the problem is in connection I also noticed...
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