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Archive for the ‘Touchpad’ Category

While laptops eventually become past their prime, many of the underlying bits and pieces are still functional and could be reused. If you’re wondering what to do with an old touchpad, especially one with a Synaptics chip, then this stepper motor control project should provide some inspiration.

Here the touchpad is read by an Arduino Leonardo using a PS/2 library, which translates these finger swipes into stepper signals via a driver board. 

When the user scrolls forward or backward, the motor responds either with a nice natural acceleration/deceleration motion, or the ability to move to a certain set point with a tap.

Phone screens keep getting bigger. Computer screens keep getting bigger. Why not a large trackpad to use as a mouse? [MaddyMaxey] had that thought and with a few components and some sewing skills created a trackpad in a tablecloth.

The electronics in this project are right off the shelf. A Flora board for the brains and 4 capacitive touch boards. If you haven’t seen the Flora, it is a circular-shaped Arduino made for sewing into things. The real interesting part is the construction. If you haven’t worked with conductive fabric and thread, this will be a real eye-opener. [Maddy’s] blog has a lot of information about her explorations into merging fabric and electronics and also covers things like selecting conductive thread.

As an optional feature, [MaddyMaxey] added vibration motors that provide haptic feedback to her touchpad. We were hoping for a video, but there doesn’t seem to be one. The code is just the example program for the capacitive sensor boards, although you can see in a screenshot the additions for the haptic motors.

We’ve covered the Flora before, by the way. You could also make a ridiculously large touch surface using tomography, although the resolution isn’t quite good enough for mouse purposes.


Filed under: Arduino Hacks, wearable hacks
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TouchSynth – A high school senior project

arduino, arduino mega, Digital Audio Workstation, mega, synthesizer, Touchpad Commenti disabilitati su TouchSynth – A high school senior project 

touchsynth

Steve Mostovoy and his partner Tim Boy Jr, worked for over 9 months to  create a TouchSynth and share all the documentation about it.

touchsynth

 

It was hard but they learnt  a lot about how not to organize code, how to think in terms of data, and how many amazing things you can do on a 16MHz processor:

This project uses an Arduino Mega, a resistive touchpad, and an 8×8 LED matrix to create a simple digital audio workstation and synthesizer. You can compose and play songs in real time and use different types of sounds. It was a nine month process between me and my partner during our senior year of high school to create this. The result is a really nifty Arduino project that showcases the flexibility of Arduino devices, and it sounds good as well!

Take a look at the video to see how it works:



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