Arduino Battery Status Monitor v1
When you want to build a standalone Arduino project, the first thing to consider is how to power it once the setup is disconnected from the computer’s USB port. First off, it’s good to note […]
Constant Current (CC) Adapter for a Constant Voltage (CV) Stepdown Voltage Regulator
I have a great collection of cheapo Chinese DC-DC stepdown converter modules that I use for everyday purposes in my lab. Most are the good old but still popular LM2596S modules available under $1 from […]
Little Electronic Fuse
After some successful experiments recently, I was convinced that measuring current with a WCS series current sensor is easy and straightforward. It’s a cakewalk – after connecting the WCS current sensor’s pins in series with […]
Arduino in Synth World
This post is just an introduction to how Arduino can be used with synthesizers. So, lower your expectations first, this is not ready-to-go do-it-yourself project documentation. Still interested? OK, get ready to move on! What’s […]
Arduino Secret Button (Basic Version)
In this post, we are going to see how to build a secret button with Arduino! The basic idea of this little project is to use a single momentary pushbutton switch as a multifunction secret […]
Arduino Multimode LED Tent Light
Nowadays portable LED tent lights can be purchased cheaply to provide ample lighting while hiking and camping overnight. Then it is only a simple matter of connecting the tent light to a mighty battery pack […]
RS-485 & Arduino – Quick Primer
RS-485 is a standard serial protocol, with bus topology where you can connect several devices in a very cheap and cheerful way. Here will be explained how to begin your Arduino + RS-485 projects. Okay, […]
Universal Low Voltage LED Flasher Module
In this post, you can see the design of a little low-voltage universal LED flasher. The flasher is in fact a standalone module but it can also be used with most 3.3V (or 5V) microcontrollers […]
Arduino Kids Night Light
It’s only been three weeks since I put together an Arduino Night Light for the kids, and it already made my neighbour’s kids curious! Anyway, long story short, once I had finalized my design thought, […]
Anti-Rape Alarm/Personal Alarm
I had to develop a quick design to cook up a simple anti-rape alarm/personal alarm, but using only a handful of inexpensive and readily available electronic components. I came up with this solution. I am […]