Soft Latch Switch – A Quick Refresher
For today’s post, I thought it would be a good idea to see if I could create a reliable soft latching switch mechanism using a handful of electronic components lying around… First of all, note […]
LM35 Revisited – STEM Edition!
Still, a google search for a commonly available temperature sensor to connect to a microcontroller quickly brings up the LM35. And, copy-paste of a little bit of clichéd code uploaded to the intended microcontroller makes […]
DC-DC Boost Converter Primer
Today, let us have a quick look at the task of boosting dc voltages. It is perhaps worth noting that every other consumer electronic gadget on the market performs some form of voltage conversions imply […]
Another 555 Timer IC Electronic Latch Switch
You may not know the name of one of the first independent semiconductor designers, but you have encountered Hans Camenzind’s designs countless times. Incredibly, he created the 555 timer chip alone, spending a year designing […]
Compact Police Siren – An Inside Look
When designing a security system, often we need to add a siren circuitry with it. Fortunately, there are many analog and digital electronics ways to accomplish that chore. However, these days, we can also use […]
Mercury Tilt Switch Fun
As you know, a mercury switch can be used to detect any inclination with respect to gravity. For example, suppose your home security alarm wants to know when someone opens the lid of your cash […]
Arduino VCLED Flasher – Another Fun Project for STEM Kids
As promised, here is another fun electronics project for our STEM kids. This time the theme is the setup of an Arduino VCLED Flasher. So, get ready to see a simple voltage controlled lamp flasher […]
Current Mirror Segments – Part 1
A current mirror is a circuit segment that functions to produce a copy of the current flowing into or out of an input terminal by replicating the current in an output terminal. In the analog […]
Automotive SSR Module v1
After getting a few vintage automotive solid state relays (SSRs) from a flea market thru a friend abroad, I decided to make a low-cost automotive solid state relay myself. So, this post covers the design […]
Automatic USB Mains Switch (v1)
Recently I wanted to build a USB controlled power strip that powers some peripherals as soon as my computer starts up. Luckily, I managed to find a commercial USB-Power On switch in my attic (see […]