Nowadays you can see many dc power supply modules equipped with an additional remote-controlled shutdown (or on/off) feature. It allows you to control the power supply output with a signal switch or transistor. Some time […]
You cannot prevent the power grid from going down and up, but you can take steps to ensure that an electrical disturbance does not take your sensitive electronics devices down with it. When power is […]
Described here is the do-it-yourself project of a simple self-dimming lamp. The self-dimming lamp is powered by a rechargeable 9V battery and features a push-button switch that triggers one bright LED as the emitter and […]
The power sequence is the sequence in which the power is applied and shut down between steps in a sequence. A power sequence is used when there are devices with different power supply voltages mixed […]
In many posts, we saw how to use a common transistor as an electronic switch to drive power loads of voltage and current mightier than those we could deliver with the I/Os of a standard […]
Most commercial model rocket launch controllers available to buy are either expensive or do not have desired features. After a lot of Googling, I found nothing that fits my little budget. Actually, I wanted a […]
If you’re an audiophile, often you have to purchase rotary audio input selector switches for your home audio projects. You can of course buy such selector switches and selector switch modules via usual online channels […]
This is the concluding part of the LED strobe article published last year (https://www.codrey.com/electronic-circuits/led-strobe-primer-part-1/). During this long period (sorry for the inadvertent delay) I have already shared several strobe light ideas. But the sequel to […]
Welcome to the lovely sound of analog electronics! Now I’m building some white noise and pink noise generators for an upcoming amateur audio project. In this article, you can see a few basic design ideas […]
I was looking around for a little garden electronics project, and I came up with the idea of making a strikingly different Arduino garden lights controller. The reason I picked such a theme is that […]
