For this project, I am using an HC-SR04 ultrasonic sensor for opening a solenoid door lock. Basically, the ultrasonic sensor acts as a proximity detector. A solenoid lock triggers when an object blocks the sensor at a given distance. In addition, a web app can act as WiFi remote control …

This site has built up several tutorials on how to measure almost anything. Now, we add to that list an Arduino pressure sensor featuring the MPS20N0040D and the HX710B Analog-to-Digital IC. By the end, you’ll be able to measure air or liquid pressure and convert it to Pascals, mmHg, or …

Are you interested in learning the details of a BMW? Better still, you can learn all the options the vehicle is equipped with. Thanks to VIN online decoders like BMW VIN decoder you can learn all about a BMW through its VIN. In this post, you will learn how to …

Have you read the MAX30100 tutorial and are still having trouble making that chip work? Maybe it’s time to use another Arduino heart rate sensor. The MAX30102 module has a better hardware design and software support. I’ll explain why after the jump.

Now that we have set up the Raspberry Pi Pico for the Arduino environment, it’s time to build real projects. First on the list is a simple motion detector using a Passive Infrared Receiver (PIR) sensor.

In my previous post, I showed how challenging it was to build code for the Raspberry Pi Pico in C/C++. Fortunately, the microcontroller is now fully supported by the Arduino IDE! This post shows you how to program the Raspberry Pi Pico as if it’s an Arduino.

If you are searching for a place to live, you'll soon be faced with the "fun" task of reading & understanding your lease. This legally enforceable contract spells out your down payment, termination date, responsibilities as a tenant, and the rent you'll be paying every month.  Although it's a lengthy …

Online dating has become the new ordinary. If you are searching for Mr. or Mrs. Right on different dating applications, it's critical to find ways to ensure your security. There are numerous instruments available to you between ride-sharing, auxiliary email accounts, and a subsequent telephone number. Continuously ensure that you …

Launching a project into production doesn’t mean it’s 100% finished --- this is why software/firmware updates exist. And your users are not programmers so you want the update process as user-friendly as possible. Thankfully, the ESP32 allows you to update its compiled code, called firmware, to be updated over the …

The Arduino was invented primarily for non-engineers but now, a lot of engineers are also into it. Using it in a fully-developed project is not a good look, yes, but it’s a lot quicker than building from scratch.  My only issue at the beginning is finding the best way to …