The haptic glove project is on development again!


Hey! I'm so sorry that I haven't been making content lately. I haven't had any good project ideas nor motivation to do them, but now I have finally revisited the glove project and I'm going to make it work this time no matter what.

The project is still in the design phase, but it FINALLY has the BNO055 -absolute orientation sensor! I'm so glad that I could buy it, and it would've been pretty much impossible without your support! Thank you so much for supporting!


Haptic feedback design V2

I'm making the glove a bit different than I imagined. I'm not going to make the exoskeleton to it that I previously thought about, but I'm definitely going to give it some haptic feedback with either buzzer motors or Linear Resonance Actuators. In case that you haven't heard about linear resonance actuators, you can check more about them from TI's video: https://training.ti.com/linear-resonant-actuator-lra-technology Basically what the LRA does better than the conventional Eccentric Rotating Mass is that is has a LOT lower latency, because it doesn't have to spool up a huge chunk of offcentered mass. The only downside to this is that LRA:s are pretty darn rare and expensive, but I'll try my best to try and find cheap versions of them. But for the prototype the reqular buzzers are just fine.

Sensor design V2

If you remember the last version, you probably know that the early T3-sensors (Test n. 3) were made from paper, aluminium foil and graphite from a pencil. The new T8-sensors are made from Velostat (a resistive material that changes the resistance depending on the pressure), aluminium foil and regular 22 AWG wire that's stripped from it's insulation. You can see in one of the pictures that the sensor is just made from tape, 10x10 mm zigzag pattern of wire and aluminium foil placed on top of the tape and wire. Then the Velostat sheet is sandwiched between the two plates.

The signals are multiplexed thorugh the HP4067 (CD74HC4067), so that I can use just two resistors to get the resistance to a right level, and it therefore needs just a single analog pin from the Arduino, which is pretty neat when I'm just testing the sensors. For the final version it might be a bit too slow, because the multiplexing takes some time, but at least this is a cheap way to do it, because I don't have to buy an expensive ADC to handle all of the sensors.



Future on this project

So at the moment I have literally run out of every possible material that you can imagine. I still have a lot of Velostat left, but I ran out of wires and connectors, so I'll need to wait a bit for them to arrive from China, which is probably going to take a while especially at this time. I'm going to make a video about this project soon, and I should definitely start making devlogs about this project. I just hope that I can keep my motivation up during the project, and I'll do my best to try to learn as much as possible about keeping a constant pace on a project.

But for now thanks for your support, and if you have any suggestions or questions, I'm happy to hear them from you!


Teukkaniikka released this post 5 days early for patrons. Become a patron
By becoming a patron, you'll instantly unlock access to 6 exclusive posts
6
Images
3
Links
By becoming a patron, you'll instantly unlock access to 6 exclusive posts
6
Images
3
Links