Need a small DC/DC 3W switcher to drop 5V to 3V in a 7805 TO-220 pinout? Or maybe just want to learn to surface mount solder 0603 components. Check out this $3 OSH project from Black Mesa Labs. $0 ...

Simulate the LTC4040 in LTspice and run it as a 1S UPS over a 2.7-4.2 VDC battery range at a couple of amps. Working from memory, the resuls were rough. The power path is not too bad, but the up ...

Used 1.5V batteries often end up in the trash, ... Transform Used 1.5V Batteries into Amazing DIY Inventions You Didn’t Know About. Posted: May 5, 2025 | Last updated: May 5, 2025.

Building a simple welding machine at home is easier than expected, especially with a 1.5V battery. In this DIY project, viewers will learn how to create a functional welding machine using basic ...

The junction on the voltage divider network connected to the the Arduino analog pin is equivalent to the input voltage divided by 11, so 55V ÷ 11 = 5V. In other words, when measuring 55V, the Arduino ...

Electroninks has this month returned to Kickstarter to launch their second-generation range of DIY electronic kits which combine electronics and paper thanks to the Circuit Scribe conductive ink pen.

I messed around and found out how these DIY food dish mash-up taste at New Orleans Jazz Fest. Here's the best of the bunch for 2025 as the experiments continue.

CircuitMess DIY Wearable Bundle: Build & Code Your Own Smartwatch and Virtual Pet – $199. See Deal. Stack Commerce Gear. Why Trust Popular Science Popular ...

Choosing athree-cell, 4.5V supply results in a lowervoltage of 0.33V per cell. A 4.5V supplycan power as many as eight LEDs.Tests show that this circuit works from4.5V to 0.94V, which is lower than ...

This latest one, called AgIC, combines the approaches of two we’ve previously covered — the Ex1 3D printer for PCBs and the Circuit Scribe conductive ink pen — by offering a kit ...

Synesthesia, aka the mixing of the senses, is a super power to be feared. But while many synesthetes have boring talents – imagining numbers as colors, for example – this DIY hack lets you ...

A few weeks ago, Marc Fitten, editor of the Chattahoochee Review, wrote an op-ed called "Our Cars, Ourselves" in The New York Times that said this: "GM left its Atlanta plant to rot. So I left my ...