	JavaScript For IoT
	Diary of a JavaScript developer on the magical world of IoT and electronics. Join me as we share knowledge. Let's learn together!

Minimum Shopping List

If you want to start learning about this beautiful world, I recommend you get a hold of some items.

Raspberry Pi 4 starter kit comes with everything you need to get started (the actual computer, the micro SD card, and power supply). I got the 4GB RAM version. Amazon.ca
Freenove kit has a ton of components and a book to guide you through. Amazon.ca
My sight is not what it used to be, so I also had to get a 10X magnifier to see the tiny pieces. Amazon.ca
[optional] An oscilloscope is indispensable to “see” the electrons flowing through the wires, but those things are expensive. A good one is at least a few hundred dollars. I was able to find this little device which is doing an excellent job for what I need. Amazon.ca

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Raspberry Pi Families And Models
19 Jun 2021
I have compiled a list of different Raspberry Pi models with essential characteristics about each one.
Analog To Digital Conversion (I²C) with PIGPIO
18 Jun 2021
The second part of the I²C series implements a ADC with I²C using PIGPIO library
Analog To Digital Conversion (I²C) with RPIO
06 Jun 2021
How can the Raspberry Pi, being an all-digital device, read an analog signal? Use an Analog-to-Digital Converter (ADC). This article discusses why we need those converters, and we focus on I²C ADCs.
DMA-based PWM with PIGPIO
04 Jun 2021
This project builds a simple circuit that uses DMA-based Pulse-Width Modulation (PWM) with PIGPIO.
Hardware-based PWM with RPIO
30 May 2021
This project builds a simple circuit that uses Hardware-based Pulse-Width Modulation (PWM) with RPIO.
Pulse-Width Modulation (PWM) - Theory
29 May 2021
Pulse-Width Modulation (PWM) is an effective method of using digital signals to control analog circuits like dimming an LED or controlling motor speeds.
Hello IoT (PIGPIO)
16 May 2021
This article is part 2 of another article I wrote a few weeks ago (Hello IoT (RPIO)), where we are building the same circuit, but the code is written in Node.js using the PIGPIO library. I highly recommend you read that article before you continue reading this one.
Pull-Up, Pull-Down Resistors
02 May 2021
When working with electronic logic circuits, we use pull-up/pull-down resistors to ensure a known state for a signal.
GPIO Pins
18 Apr 2021
The Raspberry Pi board has 40 pins that we can use to interact with the world, but there is no standard way of referring to them! Technically there are few standard ways
Debouncing A Button
04 Apr 2021
Electricity is too fast! What are noisy buttons, and why do we have to account for them?
Hello IoT (RPIO)
28 Mar 2021
We are now ready to start with a few simple circuits and finish setting up the Raspberry Pi.
Initializing The Raspberry Pi
14 Mar 2021
Before we start working on the projects, we need to initialize the Raspberry Pi by setting up Node.js.
Minimum Shopping List
28 Feb 2021
If you want to start learning about this beautiful world, I recommend you get a hold of some items.
Welcome!
14 Feb 2021
You may have read some of my blogs on Salesforce development and architecture, but this year I decided to embark on a new hobby: Robotics! So this blog will be a bit different than the ones you regularly read from me.

View repo on GitHub