DIY Haptic-Enabled VR Gun Hits All The Targets

This VR Haptic Gun by [Robert Enriquez] is the result of hacking together different off-the-shelf products and tying it all together with an ESP32 development board. The result? A gun frame that integrates a VR controller (meaning it can be tracked and used in VR) and provides mild force feedback thanks to a motor that moves with each shot.

But that’s not all! Using the WiFi capabilities of the ESP32 board, the gun also responds to signals sent by a piece of software intended to drive commercial haptics hardware. That software hooks into the VR game and sends signals over the network telling the gun what’s happening, and [Robert]’s firmware acts on those signals. In short, every time [Robert] fires the gun in VR, the one in his hand recoils in synchronization with the game events. The effect is mild, but when it comes to tactile feedback, a little can go a long way.

The fact that this kind of experimentation is easily and affordably within the reach of hobbyists is wonderful, and VR certainly has plenty of room for amateurs to break new ground, as we’ve seen with projects like low-cost haptic VR gloves.

[Robert] walks through every phase of his gun’s design, explaining how he made various square pegs fit into round holes, and provides links to parts and resources in the project’s GitHub repository. There’s a video tour embedded below the page break, but if you want to jump straight to a demonstration in Valve’s Half-Life: Alyx, here’s a link to test firing at 10:19 in.

There are a number of improvements waiting to be done, but [Robert] definitely understands the value of getting something working, even if it’s a bit rough. After all, nothing fills out a to-do list or surfaces hidden problems like a prototype. Watch everything in detail in the video tour, embedded below.

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Haptics Hack Chat With Nanoport Technology

Join us on Wednesday, April 7 at noon Pacific for the Haptics Hack Chat with Tim Szeto and Kyle Skippon!

Of all our senses, the sense of touch is perhaps the most underappreciated. We understand and accept the tragedy that attends loss of vision or hearing, and the impact on the quality of life resulting from olfactory and gustatory sensations can be severe. But for some reason, we don’t give a second thought to our sense of touch, which is indeed strange given that we are literally covered with touch sensors. That’s a bit of a shame, since touch can reveal so much about the world around us, and our emotional well-being is so tightly tied to the tactile senses that those deprived of it in infancy can be scarred for life.

Haptics is the technology of tactile feedback, which seeks to leverage the human need for tactile experiences to enrich the experience of dealing with the technological world. Haptic feedback devices are everywhere now, and have gone far beyond the simple off-balance motor used since the days when a pager was a status symbol. To help us sort out what’s new in the haptics world, Tim and Kyle from Nanoport Technology will stop by the Hack Chat. Nanoport is a company on the cutting edge of haptics, so they’ll have a wealth of details about what haptics are, where the field is going, and how you can start thinking about making touch a part of your projects.

join-hack-chatOur Hack Chats are live community events in the Hack Chat group messaging. This week we’ll be sitting down on Wednesday, April 7 at 12:00 PM Pacific time. If time zones have you tied up, we have a handy time zone converter.

Click that speech bubble to the right, and you’ll be taken directly to the Hack Chat group on You don’t have to wait until Wednesday; join whenever you want and you can see what the community is talking about.
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Giving Sight To The Blind With A Wave Of The Hand

[Jakob Kilian] is working on a glove that he hopes will let the blind “see” their surroundings.

One of the most fascinating examples of the human brain’s plasticity is in its ability to map one sense to another. Some people, for example, report being able to see sound, giving them a supernatural ability to distinguish tones. This effect has also been observed in the visually impaired. There are experiments where grids of electrodes were placed on the tongue or mechanical actuators were placed on the lower back. The signals from a camera were fed into these grids and translated in to shocks or movement. The interesting effect is that the users quickly learned to distinguish objects from this low resolution input. As they continued to use these devices they actually reported seeing the objects as their visual centers took over interpreting this input.

Most of these projects are quite bulky and the usual mess you’d expect from a university laboratory. [Jakob]’s project appears to trend to a much more user-friendly product. A grid of haptics are placed on the back of the user’s hand along with a depth camera. Not only is it somewhat unobtrusive, the back of the hand is very sensitive to touch and the camera is in a prime position to be positioned for a look around the world.

[Jakob] admits that, as an interaction designer, his hardware hacking skills are still growing. To us, the polish and thought that went into this is already quite impressive, so it’s no wonder he’s one of the Hackaday Prize Finalists.