Fresh hacks every day
If you've checked out your favorite online retailer of absurdly inexpensive Chinese electronics, you'll find a whole bunch of replacement parts. Phone parts are especially common, with high-resolution LCDs available for just a few dollars. There are also a few touchscreen kits - resistive touchscreen digitizers that can easily be read with a microcontroller. [Vinod] got his hands on one of these … [Read more...]
[Viktor] is working on salvaging parts from a dead laptop. In his eyes the biggest gem to be had is the touchpad, so he set out to see if he could make the touchpad a standalone device. You might be envisioning the many hells of interfacing this with a microcontroller and writing firmware to measure and translate the input to HID compatible commands. The good news is it's quite a bit simpler … [Read more...]
This rig will take the letters you write on the touchpad using a stylus and turn them into digital characters. The system is very fast and displays near-perfect recognition. This is all thanks to a large data set that was gathered through machine learning. The ATmega644 that powers the system just doesn't have the speed and horsepower necessary to reliably recognize handwriting on its own. But … [Read more...]
[Bertho]'s submission for the 74xx logic contest is really impressive. He designed a capacitive sensing touchpad using only 74xx and 40xx logic chips. We're impressed with the build and his writeup is one of the best resources we've ever seen for capacitive sensing. There are two ways to go about designing a capacitive touchpad. The first option is put a voltage through an RC circuit. Measure … [Read more...]
[Russ] was lucky enough to get his hands on a deeply discounted HP TouchPad, and after hearing about the huge bounty being offered for getting Android up and running on the device, he decided to poke around and see if he could make some headway. He started off by making a full backup copy of his file system using a tool HP has on their WebOS site, just in case anything unfortunate happened to … [Read more...]
[Giorgos Lazaridis'] most recent project was to build a capacitive touch pad. Since he's using a PIC 16F1937 it will be relatively easy. That's because it has a 16 channel capacitance sensing module built right in. But there are still some design considerations that make the development a bit touching. This isn't the first time he's worked with capacitance sensing. Through past experience he … [Read more...]
[Dave] needed some extra light above his desk/workbench area and decided to wire up some RGB LED light strips to brighten the place up a bit. He wasn't content with using a standard switch to toggle them on and off, and after some brainstorming, he decided to build a capacitive touch circuit using a pair of copper tubes mounted in a project box. Just as he was putting the finishing touches on his … [Read more...]
Subscribe for weekly videos
Recent comments