Ask Slashdot: What Is Your Most Unusual Hardware Hack?

An anonymous reader writes: Another Slashdotter recently asked what kind of things someone can power with an external USB battery. I have a followup along those lines: what kind of modifications have you made to your gadgets to do things that they were never meant to do? Consider old routers, cell phones, monitors, etc. that have absolutely no use or value anymore in their intended form. What can you do with them? Have you ever done something stupid and damaged your electronics?

Comments

External GPU on the notebook

[Anonymous Coward]

Using an expresscard PCIe breakout (and an ATX power supply) I have put a Nvidia GTX-780 GPU onto my 5 year old laptop. As an external accessory.

Works like a charm, and really makes this thing a high-end system again.

Converted old cell phone to uplink transmitter

[NixieBunny]

Many moons ago, I got tired of what was on the radio, and I built a pirate FM station. It had a studio supplied with over 50 volunteer DJs, but most of all it had the transmitter up in the mountains, with a UHF uplink system, to allow for very broad coverage of our city. I made the uplink transmitter form a 1985 Motorola cell phone, the old brick type. It was suitably modified to put out wideband FM audio. You might be able to read about it by Googling "Radio Limbo Tucson".

Something I won't put on my resume

[arkamax]

I got a wakeup call once at 8am, it was my CEO whose Thinkpad laptop failed to boot due to a stuck CPU fan. He had a plane to board in 3 hours to visit a seminar where he had to present a slide stack.. the only copy of which was on that laptop. Naturally, there was no time to replace anything (much less find a spare fan), so after a short lecture on importance of backups I took his laptop, put my lips to the fan intake, pushed power button and gave it a gentle blow. That got the stuck fan started. Perhaps the same could be achieved with a dust blower, but we didn't have one handy. When he asked me how is he supposed to fix it in front of world's most known scientists in the field, I told him - "give it a blow on startup, that's all". Those EYES... It did the job though :)

Paperclip saves fairground ride.

[sbaker]

I was working on one of those gigantic 'motion theatre' fairground rides:

https://en.wikipedia.org/wiki/...

This was back in the era of 286 PC's - running DOS. The software was suffering timing issues and we really needed a hardware timer interrupt - but DOS already stole all but one of them - and we simply didn't have enough.

I needed a *roughly* 1kHz interrupt to monitor some ride function or other (I forget exactly what) - so I came up with the idea of putting a bent paperclip between the RxD and TxD lines of the RS232 port and using the serial port interrupt. I'd send a character out through the serial port - and at 9600 baud, with one stop bit and one start bit the character took ~1/960'th of a second to arrive back in the serial port chip...at which point it triggered an interrupt - and I could send another byte out to make it happen again.

We used paperclips on a couple of machines as an emergency hack - but later versions used a 'dongle' plug that went into the RS232 port with a wire soldered across those two pins)...this plug was named the HPE..."Hardware Paperclip Emulator".