Fresh hacks every day
Here's another "useless machine" variant. The trick to this one is that it has dual "fingers" and can work either way. Which way it turns off is selectable via a switch on the side, and the fingers can both be turned on to "fight" each other. Check out the video here. This video depicts the assembly of a Gameboy MAME-style cabinet. For those wanting to try something like this, this video … [Read more...]
While there's typically not much room on our work bench for toys, [David] over at Robot Room has put together a pretty cool multimeter for which we would make an exception. His Lego Minifig multimeter is constructed using mostly standard off-the-shelf Legos, and a pair of Minifigs he modified to suit his needs. Translucent Minifig heads were sourced online to allow the neck-mounted LEDs to … [Read more...]
This video falls under the category of things we want to send people when they ask "how do I get started with electronics", and we get asked that a lot. For those of you who have been working with electronics for years at all, you can skip this entire video. That is, unless you really want to watch an instructional video on multimeters. In the video, which we've included after the break, they talk … [Read more...]
What can you make with a toilet paper roll, duct tape, and a graphing calculator? A stand for your homemade spectrometer. This is neither as pretty nor as accurate as a precision scientific instrument, but that doesn't mean it's useless. In fact, it works perfectly well for rudimentary observations. Light is shined through a sample solution, passes through a diffraction grating, then shows up as … [Read more...]
[Craig] cracked open a multimeter to unlock RS232 serial communications that can be used for data logging. There's a couple of things that make this possible. First of all, the multimeter's processor is not covered in a black epoxy blob, leaving the pins exposed for hacking. Second, the chip model is known and [Craig] was able to get his hands on the datasheet. One of the pins enables serial … [Read more...]
[Alan Parekh] built this clock to look like a Multimeter using analog multimeters for the three displays. A PIC does the timekeeping and feeds a specific amperage to the three displays which show hours, minutes, and seconds. We've seen clocks that use analog meters before. [Alan] took the concept to the next level, replacing the graduated markings behind each needle to correspond to the correct … [Read more...]
The Superprobe is a logic analyzer, multimeter, and much more rolled into a fun to build project. [Ben Ryves] didn't come up with the original idea, but he definitely took a good thing and made it better. You can use it to test logic, inject logic into a circuit, read capacitors and resistors, test frequency, read the device address from 1-wire devices, and more. Interchangeable probes, choice of … [Read more...]
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