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Over on the RepRap blog, [Rhys] has been experimenting with molten metal to build circuits with the RepRap. Last June, [Rhys] found a neat alloy made of Tin, Bismuth, and a little bit of Indium that melts at around 130° C, and has just the right properties to be extruded with a standard RepRap setup. [...]

Tags:  circuitry reprap printing rhys molten-metal indium bismuth cnc hacks  

[Script] is pretty lucky. One of the engineers who designed his cellphone included over-voltage protection in the circuit. Of course you probably wouldn’t know about this if there wasn’t a service schematic available. But a bit of searching around let him resurrect the fried USB segment of his Nokia N900. Now [Script] has been experimenting [...]

Tags:  cellphone usb script nokia-n900 voltage-protection circuitry cellphones hacks  

[Dmitry Grinberg] has to walk all the way across his bedroom to switch the lamp on and off. The drudgery of this finally became too much, so he built a remote control and added dimming for good measure. Above you can see the circuitry for the remote and the receiver, as well as the finished [...]

Tags:  lamp dmitry control grinberg drudgery circuitry home hacks  

Hackaday contributor [Nick Schulze] popped out an impressive set of LED headgear for a hat-themed party. [Nick] is no stranger to working with LEDs. Previously he built a blue 8x8x8 cube something like this other 512 node full color version. He had a bunch of LEDs left over from that project and decided to put [...]

Tags:  led leds headgear nick-schulze nick circuitry hacks  

[Sean Michael Ragan] built this FM transmitter which shows off its circuitry via a clear plastic dome. The device is electrically identical to one we looked at in September. That version championed a construction method that used small squares of copper clad as solder points which were each super-glued to a large copper-clad platform serving [...]

Tags:  circuitry simple transmitter sean-michael-ragan plastic-dome construction-method fm-transmitter radio hacks  

This is a custom back plate with induction charging circuitry that [Derek Hughes] build for his HTC HD2 cellphone. When we checked in with him last week he showed us how to add an inductive charger without voiding the warranty but it wasn’t very pretty because the stock back plate blocked the inductive field and [...]

Tags:  custom induction cellphone derek-hughes inductive-charger circuitry cellphones hacks