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Control 68 solenoid valves with 68 relay but it fails when they connected...
I want to create a digital water curtain. Currently, I am using an Arduino Mega (D0-D53, A0-A13) to control 68 relays. Each relay is connected to one solenoid valve, making a total of 68 solenoid...
View ArticleSwitch....Case issue
Hello arduino community, First of all please bare with me as I'm not a software developer. I'm working on a project where a have a few boards communicating over CANBUS with each other. On the latest...
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Reading load cell with Multimeter
Hi, I'm new to the forum and am going to start off by posting a non arduino based question I'm hoping someone with the relevant knowledge will however be able to help me out. I'm looking to read force...
View ArticleHelp Getting Button Presses Recognised
I'm writing some code where I want a menu system to display on an OLED screen. I have written the following code, but I'm having difficulty getting the three buttons to be recognised. On the Oled.cpp...
View ArticleController Communication
Just started a project to do something more interesting with outdoor Christmas lights this year - so just under a year to deliver. I have several strings of addressable WS2811 and 2812 LED's (total...
View ArticleTCB0, TCB1, TCB2 Usage in Atmega 4809 - Nano Every Board
the timers mentioned above in topic title are initialized to be used as PWM ports and are running internally as configured by Arduino IDE core code. I am not using these ports as PWM pins using the...
View ArticleHelp needed for adding ESP32 NTP to old RTC sketch
I need help and advise, please. Several years ago I made a wordclock using an Arduino nano and a RTC clock. It worked fine but my sketch quality was poor and the time change was a burden. I would like...
View ArticleSaving uint16_t in array
Hey there, I ran into some problems during a project of mine. I'm using an AD7091R and I want to save the values from it in an array to use it afterwards. The problem is that when I save the values in...
View ArticleUsing analog pins for LCD
I've ran out of digital I/O pins to use on my ELEGOO UNO board (based on the ATmega328) and I've tried simply using the liquid crystal library and declaring the pins: (LiquidCrystal lcd(A0, A1, A2,...
View ArticleTFT LCD display Shield
Hello there, Recently i purchased TFT display shield for Arduino uno and and when i tried to use it it doesn't works it only shows me white screen and I read many other articles and used n numbers of...
View ArticleIssue trying to use wire.h library
C:\Users\nick\Documents\Arduino\libraries\Wire\Wire.cpp:26:12: fatal error: twi.h: No such file or directory #include "twi.h" ^~~~~~~ compilation terminated. exit status 1 Compilation error: exit...
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Urgent Issues-arduino nano with electrochromic film and SEN0348 dfrobot...
Hello. I am creating a credit card shaped device which uses 3V battery-powered electrochromic switchable smart film (a paper-like material which turns transparent when on and opaque when off). I am...
View ArticleFailed uploading: uploading error: exit status 2
I've been trying to complete a project on the ESP32 WROOM but I keep getting this error. Sketch uses 260617 bytes (19%) of program storage space. Maximum is 1310720 bytes. Global variables use 21344...
View ArticleEsp32 cam not connecting to hotspot
code seems to run up to point of wifi connection then cycles again, not getting a web address to use in the camera web server, using generic esp32 cam with a sparkfun programmer. wired per the many...
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Need Help Receiving IR Pulses
Hi, I've set up a breadboard with an IR emitter and receiver, and I'm trying to emit and receive certain pulse durations. The emission works fine, but I'm unable to receive more than illogical values...
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Issue with the website: there's a DIV in the way
Loading any page on the website https://www.arduino.cc/, the page loads then darkens as a screen-sized DIV fades in. It blocks all interaction and has to be inspected and deleted before I can do...
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Cat door informer
Hello All. A Arduino newbie here. I made a cat door informer. My plan is simple. I installed an accelerometer ( ADXL335 ) on the cat door. ( Please see diagram at the very bottom of this post ). If a...
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Programming a string of commands simply for kids
Hi all, I'm a science teacher and curious maker who did some boe-bot and arduino coding years ago. I keep thinking up projects my kids get into and I want to help them (7 yo, 9 yo, 13 yo) understand...
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Erratic capacitive touch sensor values
Hi, I am trying to make a simple proximity/touch sensor and I can't figure out what's wrong. It's the classic setup of pin 2 sending and 4 receiving with copper tape as the touch interface. Here is...
View ArticleNative serial port
When looking for board info I get "Native serial port can't obtain info." Is there some setting on my computer that causes this. Message at bottom of window says "Arduino Nano on Com 1" Specs: Windows...
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