Misc Hacks

4186 Articles

Happy Halloween Extra

October 31, 2006 by 8 Comments


[Update: pumpkin carved by Team Hack-A-Day member mastershake916]

We’ve got plenty of tricks around here, and I’ve got a treat coming up – you’ll hear about it in the next podcast.

[Ronald Schaten] sent me his USB LED fader. ATMega, PWM lit LEDs, he uses it to indicate status on his pvr.

[computerguru365] sent in his cell phone car charger turned USB cable

[steve] sent in this over the top C64DTV mod.

[Everett] sent along his button activated PSP shoulder lighting.Nice tiny soldering work for that on.

[Jorge] sent in his friends latest junk art metal lathe. Not an easy thing to build – Nice!

[gijs] sent me this crazy bent Casio SK-1. We’ve had a few of these on Hackaday before.

[seniorcheez] sent in his iPod shuffle dock with integrated power and tunecast.

Wireless Card = ARM Development Platform

October 29, 2006 by 10 Comments


[Archantos] sent us this one. The mustumbler project is actually trying to use some external hardware to make a miniature wireless stumbler. [Archantos] points out that it’s could be a cheap way to get your hands on an ARM development platform. He’s right. Just a few connections gets access to the I2C bus, a GPIO expander for I2C runs the LCD and an EEPROM is there for program storage. The software is still being sorted out, but the hardware itself is functional. If they can manage to reverse engineer the Conexant chipset, they should have a very promising platform.

Thursday Mini-extra

October 26, 2006 by 11 Comments

[Russ] sent in his Great Pumpkin computer case mod. (Non-biodegradable)

[Nuke] sent in his $10 ipod dock. It makes me think of doom for some reason.

[phnx] sent in this amusing case mod.

These have been around, but they’re excellent, so deal. Evilmadscientist.com has a couple of great pumpkins.
Check out the Cylon Jackolantern and the R/C Dalek Pumpkin

[Daedalus] sent in this one – adsl via sound card. 96kbs. The sound card is interfaced
with an audio transformer to the line at each end.

And this one just came in from [Eric]. Make a magsafe connector for thinkpads! Awesome.

LED Sensor Solar Tracker

October 25, 2006 by 18 Comments


More of my EV kick coming through. A solar tracker is used rotate a solar panel to get optimum energy from the sun. This one uses LEDs as the light sensor and mosfets to drive the output to rotate on a single axis. He even reduced the duty cycle on the fets so no heatsink is needed. Mounting in a peanut butter jar keeps the circuit dry and allows the sun to shine through. (The designer sells these, but has circuits up on the site)

Sequential Battery Charging

October 15, 2006 by 18 Comments


I’m getting pretty interested in building an electric motorcycle, and I ran across this little hack to charge multiple batteries with one charger. It uses a 4020 counter that’s pulsed by my dear friend the 555 to activate a series of relay pairs to switch a single charger sequentially between battery cells. A more advanced version could use a microcontroller to monitor the state of each cell to ensure even charging. If you’re thinking of constructing an uber-ups, this could be useful.