Category Archives: parts

Turn Off Those Batteries With Their Protection Chip

It should be a feature of every device powered by a lithium-ion battery, that it has a protection chip on board that automatically disconnects it should it go out of its safe voltage range. A chip most often used for this purpose in single-cell applications is the Fortune Semiconductor DW01, …read more

Continue reading

Posted in battery protection, battery shutdown, dw01, lithium, lithium battery, parts | Leave a comment

An Adapter to Solve Your ESP-01 Breadboard Woes

The ESP-01 launched the ESP8266 revolution back in 2014, and while today you’re far more likely to see somebody use a later version of the chip in a Wemos or NodeMCU development board, there are still tasks the original chip is well suited for. Unfortunately, they can be tricky to …read more

Continue reading

Posted in adapter, breadboard, ESP-01, header, Microcontrollers, parts, prototyping, voltage regulator | Leave a comment

Using A Vending Machine Bill Acceptor With Arduino

We’ve all seen, and occasionally wrestled with, bill acceptors like the one [Another Maker] recently liberated from an arcade machine. But have you ever had one apart to see how it works? If not, the video after the break is an interesting peak into how this ubiquitous piece of hardware …read more

Continue reading

Posted in Arduino Hacks, bill acceptor, counterfeit, ir led, money, parts | Leave a comment

3D Printed Swirl Rocket Injector Turns up the Heat

Conceptually speaking, a liquid propellant rocket engine is actually a very simple piece of hardware. All you need to do is spray your fuel and oxidizer into the combustion chamber at the proper ratio, add a spark, and with a carefully designed nozzle you’re off to the races. Or the …read more

Continue reading

Posted in 3d printed, combustion, injector, parts, rocket, V-2 | Leave a comment

Multi-Band Receiver On A Chip Controlled By Arduino

The Silicon Labs Si4735 is a single-chip solution for receiving AM, FM, and shortwave radio. With a bit of hacking, it even supports single sideband (SSB). All you’ve got to do is provide it with a suitable control interface, which [Ricardo Lima Caratti] has done with his recent project.

Using …read more

Continue reading

Posted in Arduino libraries, parts, radio, radio hacks, receiver, Si4735, Si47xx | Leave a comment

Solid State Relay Simulation, Explained

[SaltyPuglord] needed a solid state relay for a project. We’d have just bought one, but he decided to design his own in LTSpice. Along the way he made the video below, which is pretty informative and a good example of a non-trivial design in LTSpice.

MOSFETs have made designs like …read more

Continue reading

Posted in ac switch, LTSpice, mosfet, parts, solid state relay, SPICE, ssr | Leave a comment

Transparent LCD Makes Everything Look Futuristic

According to [Kelsey], transparent displays are guaranteed to make “everything feel like the future.” Unfortunately they’re hard to find, and the ones typically available are OLED and can’t make solid black colors. But as luck would have it, it’s possible to repurpose a common LCD to be sort of transparent. …read more

Continue reading

Posted in hardware, lcd, parts, polarizer, transparent, transparent display | Leave a comment

A Barn Find 6502 Is Restored

The phrase “Barn find” is normally associated with the world of older cars, where enthusiasts live in the hope that they may one day stumble upon a dusty supercar lurking unloved for decades on a remote farm. It’s not so often found in the context of electronics, but that’s the …read more

Continue reading

Posted in 6502, atari, MOS, parts, retrocomputing | Leave a comment

A Tiny USB Hub For All Your Hardware Modding Needs

Going all the way hack to the heady days of Eee PC modding, hardware hackers have been on the hunt for small USB hubs that can easily be liberated from their enclosures and integrated into whatever project they happen to be working on. From time to time you see recommendations …read more

Continue reading

Posted in 0603, FE1.1s, parts, peripherals hacks, SSOP-20, USB hub | Leave a comment

Light The Way To Every Component

How do you organize your stock of components and modules? If an unruly pile of anti-static bags and envelopes from China stuffed into a cardboard box sounds familiar, then you need help from [Dimitris Tassopoulos]. He’s organized his parts into drawers and created a database, then linked it via an …read more

Continue reading

Posted in ESP8266, led hacks, parts, parts storage, storage | Leave a comment