arduino

Hey Folks, I am encountering the following problem. I have a TTGo board V1 and i tried compiling this code on it #include <TinyGPS++.h> #include <axp20x.h> TinyGPSPlus gps; HardwareSerial GPS(1); AXP20X_Class axp; void setup() { Serial.begin(115200); Wire.begin(21, 22)...

Firstly my wishes to whoever reading this piece of text, have a nice year and I hope that everyone is doing fine in this current pandemic and I think this is going to be a piece of the past very soon... I'm also sorry for two things regarding this thread: I'm not a fluent English speaker. I...

I was wondering if someone could help and guide me in a little project that I am working on. I am making an automated watering system for my wife. I can't seem to wrap my head around the 'C' script/code. This is what I want to happen. Using an LDR I wish to determine weather it is day or...

Hi All, Hoping that someone can put me out of my misery. I have been searching the internet for the past 5days for an answer to this question and feel like I am starting to lose my mind. Can anyone explain why the attached schematic has a 1N4148 on each of the SDI_5V, SCLK_5V and CS_5V lines...

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...

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() {...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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() {...

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...

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