The Raspberry Pi Pico is a microcontroller development board built by the same makers of the Raspberry Pi. As seen in the Raspberry Pi Pico pinout diagram below, it has 40 GPIO pins with 3 analog inputs. It features the RP2040, a 32-bit dual ARM cortex M0+ microcontroller chip with …

Ever wondered why e-book readers don't use LCDs, OLEDs, or TFT displays? This is because, with the same usage, e-paper or e-ink displays consume 0.008% power compared to a TFT display. In this article, I'll be featuring an e-ink display that can be readily used with Arduino and other microcontrollers.

Reddit's API has been piquing my curiosity for some time. However, my past experiences with APIs, especially with Twitter and Facebook have left a bad taste in my mouth. Then one day I had the courage to try it again using ESP32 and to my surprise, it's far easier than …

When working with IoT, it’s often necessary to track a device’s location for monitoring. Global Positioning Service (GPS) remains the number 1 option for large-area tracking. This project will show you how you can use a GPS with an ESP32 and have the location plotted on Google Maps.

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.