Category Archives: parts

Hands On With a Batteryless E-Paper Display

E-paper displays are unusual in that power is only needed during a screen update. Once the display’s contents have been set, no power whatsoever is required to maintain the image. That’s pretty nifty. By making the display driver board communicate wirelessly over near-field communication (NFC) — which also provides a …read more

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Posted in barcode, dithering, e-ink, e-paper, Hackaday Columns, name badge, New Part Day, NFC, parts, qr code, waveshare, wireless, wireless hacks | Leave a comment

Bluetooth Development Board Goes the Distance

Have you ever come across an interesting chip or component that you wanted to experiment with, only to find that there doesn’t seem to be a development board for it? Spinning up your own board is a lot easier today than it has been in the past, but it’s still …read more

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Posted in bluetooth, development board, long range, mesh networking, nRF52832, parts, wireless hacks | Leave a comment

Control a Motor With a Touchpad

There are a surprising wealth of parts inside of old laptops that can be easily scavenged, but often these proprietary tidbits of electronics will need a substantial amount of work to make them useful again. Obviously things such as hard drives and memory can easily be used again, but it’s …read more

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Posted in arduino, controller, laptop, laptops hacks, motor, mouse, parts, recycle, reuse, stepper, touch, TouchPad, trackpad | Leave a comment

The Descendants of Ancient Computers

Building computers from discrete components is a fairly common hobby project, but it used to be the only way to build a computer until integrated circuits came on the scene. If you’re living in the modern times, however, you can get a computer like this running easily enough, but if …read more

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Posted in bipolar junction transistor, bjt, computer, computer hacks, cray, discrete, frequency, parts, retro, supercomputer, switching, transistor | Leave a comment

Arm Gives Gift to Startups: Zero Cost

Who hasn’t dreamed of pulling together some gadget in their garage and turning it into a big business? Of course, most gadgets today have a CPU in them, and Arm CPUs power just about any kind of embedded device you can think of. If you just want to use a …read more

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Posted in arm, intellectual property, news, parts, startup | Leave a comment

Take This Cylindrical Coupler Design For A Spin

We’re not exactly sure what kind of shenanigans [Conrad Brindle] gets himself into, but apparently it often requires cylindrical couplings to attach 3D printed parts to each other. He found himself designing and redesigning this type of connector so often that he decided to just make a parametric version of …read more

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Posted in 3d printed, coupler, joint, parametric, parts, union | Leave a comment

In-Depth Design Of A Flyback Converter

It is tempting to think of analogue and digital domains as entirely distinct, never to touch each other except like a cold war Checkpoint Charlie, through the medium of an ADC or DAC. In reality there are plenty of analogue effects upon digital circuitry which designers must be aware of, …read more

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Posted in flyback, parts, power supply, switch mode | Leave a comment

New Part Day: The MSC313E is a Computer on a Chip

As the onward march of technology delivers ever more powerful semiconductors, it can be instructive to keep an eye on the periphery of the system-on-chip market for niche-application devices which may have an application in our sphere. Just such a chip is the Mstar MSC313E, a SoC designed for use …read more

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Posted in ARM Cortex-A7, BreadBee, MSC313E, parts, SoC | Leave a comment

Test Unknown Fuses Without Destroying Them

There’s a problem with fuses. On the face of it, testing would seem to be a one-shot deal — exceed the rated current and see if it blows. But once you know the answer, the device is useless. If only there were a way to test fuses without damaging them. …read more

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Posted in constant current, fuse, misc hacks, parts, positive temperature Coefficient, PTC, resistance, testing, voltage drop | Leave a comment

Magnetic Bubble Memory Farewell Tour

There’s something both satisfying and sad about seeing an aging performer who used to pack a full house now playing at a local bar or casino. That’s kind of how we felt looking at [Craig’s] modern-day bubble memory build. We totally get, however, the desire to finish off that project …read more

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Posted in bubble memory, delay line memory, intel, obsolete hardware, parts, retrocomputing, storage, twistor | Leave a comment