A home work using arduino and analogWrite commands

Our teacher assigned to us a home work, using arduino and analogWrite commands, I know it’s so easy and basic lol, but I want to impress him any ideas??😅

What is the Optimal Electrode Shape for Non-Contact Water Level Sensors in a Coffee Machine?

I am trying to design an automatic water filling system for my coffee machine. I need to design and make two non-contact non-immersion level sensors for the water tank. Ideally […]

ESP8266 Relay Stays On – Why Won’t It Turn Off?

Hi, I bought a kit on Amazon that I’m trying to control with an ESP8266. I’ve successfully uploaded the code to the ESP8266 and can monitor the readings from a […]

How can I correctly measure battery voltage using the A0 pin on Arduino?

I want to know when the batteries of a model are getting low. The 5 AA batteries are over 5 volts so I cannot check the end voltage. I make […]

How to Reverse the Output of a Reed Switch Circuit to HIGH?

I’m using a circuit that gives a LOW output on D when a magnet passes by the reed switch. Is there a way to make it output HIGH instead? (HIGH […]

How to Fix USB Serial “DEVICE_DESCRIPTOR_FAILURE” Issue with MKR Device?

I’ve problem that USB serial cannot detected on device manager. The message is “USB\DEVICE_DESCRIPTOR_FAILURE”. Did everyone here experience the same problem when connecting MKR device for the first time. Please […]

Arduino Wifi1010 Not Showing Online in Arduino Cloud

My Arduino Wifi1010 board is connected to an Opla IOT kit, and the device won’t show it’s online in the Arduino Cloud devices section. I tried uploading a basic code […]

Should I Connect the 120Ω Resistor on UART-to-RS485 Converter for 2-Module Communication?

Hello, Got a uart-to-rs485 converter board from the AliExpress . Its schematic is very close to this one It has a 120ohm resistor at data lines however it is not […]

Is it possible to use this MAX30102 heart rate sensor to detect a heart attack?

Hi there, right now I am planning to make a device which can detect a heart attack by using MAX30102 After a small research, I found out that a heart […]