Kallassy Swing Magic Driver is a training aid that helps golfers improve their driving skills. It is designed to address common swing flaws and promote proper swing mechanics. The device consists of a specially made driver head with a flexible shaft and a color-coded indicator. The swing magic driver works by providing instant feedback to the golfer during their swing. The color-coded indicator is attached to the shaft and changes color based on the golfer's swing. The colors indicate whether the swing was correct or if there were flaws in the movement.
So just know that though these bulbs are nice as a decoration, a toy or part of an art project, you might have to tolerate your neighbor suddenly changing the lights of your bulbs at home after reading this post…
I hope that some of the higher-end smart bulbs are designed with security in mind, though from a quick Google for Bluetooth smart bulb security, it seems like nobody really addresses these concerns at the moment for example, I could only find one reference to a security review of a smart bulb. You can use the File Manager app to locate this file and share it via Google Drive or Email, or you can connect the Android device to your PC as using a USB cable, and locate the btsnoop_hci.
The colors indicate whether the swing was correct or if there were flaws in the movement. The swing magic driver helps golfers with various swing aspects, such as clubface alignment, swing path, and timing. By using the device during practice sessions, golfers can develop a consistent and efficient swing, leading to better drives on the course.
How To Make Your Very Own Wireless, Extra-Magic Smart Bulb ?
As you may remember, I broke my smart bulb. Seeing an opportunity in this unfortunate (okay, mostly just annoying) event, I decided to take on that opportunity to reverse engineer it. And of course, after reverse engineering comes the part where I improve it!
I liked the original bulb design, but it had one annoying constraint, as most light bulbs too: it must be plugged to wall power to work! While I realize I might be a special case, this does limit my ability to do “magic tricks” with the bulb, such as this, where the bulb magically lights up “all on its own”:
So how did I overcome the constraint?
When I first presented the bulb to some friends, their initial reaction to the bulb suddenly being powered out of the thin air was shock — though, most of them guessed the trick just a few seconds after.
Magic can be, of course, sometimes hard to grasp.
Have you guessed it yet? If you guessed, a battery, well, you’re right!
If you recall, when I cracked the bulb open, I discovered that it comprised three different circuit boards — one for the power supply, one for logic (+Bluetooth radio), and another one for the actual LEDs. The power supply board had only three connections to the logic board: 3.3V, power, and a third, higher voltage line, which I guessed was around 12V, after connecting it to my power supply and experimenting with different voltages.
So my game plan was to fit some battery in there, ad some circuity to convert the battery voltage to 3.3V and to 12V, and play that everything fit back into the bulb.
After trying a bunch of different kinds of batteries — 500mAh and 350mAh LiPo batteries, as well as a pair of AAA NimH batteries — I figured out that none of them would fit! I remembered I had a tiny 130mAh LiPo battery lying around, and decided to see if that might work as a last-ditch solution, and it worked!
This is how you disassemble the bulb
So now for the “magic ingredients”:
- Small LiPo battery — 100mAh will do
- 12V Step Up Voltage Regulator — I used this one
- 3.3V Voltage Regulator — You can use this one
The next step is super easy: simply connect the inputs of the 3.3V and 12V regulators to the positive side of the battery, their grounds to the negative side of the battery, and then connect the 12V, 3.3V output and the ground to the logic board of the bulb:
The most challenging step by far, though, is figuring out how to fit everything in!
It can be done, just make sure you don’t squeeze the LiPo battery or short circuit anything (I recommend using Kapton tape or similar for isolation). LiPo batteries react really bad if you puncture them… and so please be careful.
Just put everything together… …and voila!
Finally, make sure you isolate the bulb base from the electronics — just to make sure it won’t blow up if you do plug it to mains. As a side note, the bulb should be considered “battery operated only” now, as doing any more might be problematic: for example, messing with the mains of a light bulb is illegal in some countries, including Israel (unless you are a certified electrician).
Bonus — adding a switch and a charging circuit
After packing everything in and re-assembling the bulb, I quickly realized it would be tedious to disassemble the entire bulb each time I wanted to disconnect or recharge the battery. The battery lasts between 30 minutes and a few hours (depending on usage), so I would have to do this before and after each demo.
Luckily, I had a small circuit that I created for another project which housed a Switch and a LiPo charging circuit with a Micro USB port (and as a bonus, 3.3v regulator on board). I quickly trimmed just the part I needed from that circuit and connected it to the battery and the logic board:
Trimming off the parts you don’t need is a lot of fun!
I managed to pack everything back into the bulb, with the switch / USB port facing towards the base screw of the bulb, so I could switch it on/off and recharge it by simply removing the base screw, which pops out really easily.
Putting everything together… Power on!
I designed a smaller version of the charging circuit, with a spot to connect the 12V voltage regulator board I mentioned above, which you can find on GitHub. Hopefully this will help you to build your own in-bulb charging circuit!
The new bulb-battery charging circuit, with the 12V regulator board mounted on top
If you want to buy it assembled, or better — a package with all the parts and assemble it yourself — just ping me on Twitter, and I will try to get one for you (I have a few spare boards).
Now for Some Magic: ng-beacon and Battery SmartBulb!
When combined with the power of ng-beacon and the LiPo battery, the Smart Bulb all of a sudden becomes and excellent tool for magic tricks (and pranks, if you’re so inclined ;). You can tape the beacon to the bottom of the center of the table during your séances, keep it in your backpack to light up your “bright ideas,” or put it in your pocket and casually cause all the smart bulbs lying on your friends’ coffee tables to light up different colors every time you enter the room!
So long as you can get the ng-beacon and the bulb in proximity, you can use any of these strategies to treat your friends to some family-friendly magic. Here is the code to do so:
All you need to do is change the threshold value to control the distance. We monitor the RSSI (Received Signal Strength Indication — that is, how strong the signal received from the bulb is), and change the red intensity accordingly. The code also does some basic filtering — it averages the last 10 samples to filter any noise that would cause flickering (RSSI is really noisy in real world).
SmartBulbs, Web Audio, and Sneezes!
How does this work? I hacked my web-lightbulb project from the Web Bluetooth Post to use the Web Audio and recognize loud sounds, toggling the bulb power. In fact, this is all the code I had to add to the project in order to make it work:
Basically, I call getUserMedia() to get microphone access, and then create an analyserNode object which lets me access the raw audio stream coming from the microphone. Then, I set up a timer that run every 20 milliseconds or so and detects peaks by calculating the average sound power over the last few milliseconds. If the average sound power is greater than SNEEZE_THRESHOLD, it will toggle the bulb (switch on/off). There is also a timeout mechanism that makes sure we wait at least for SNEEZE_TIMEOUT milliseconds before toggling the bulb, just to make sure we don’t interpret the same peak twice.
Let There Be Light!
I showed off many of these “magic tricks” during my talk at Jazoon Tech Days, and some people even came up afterwards and told me that it reminded them of a real magic show! I even tried to use the Web Speech API to get voice control to power on the bulb on stage when I said a “Magic word.” It didn’t quite work during the demo, but the audience seemed to enjoy it all the same. For some reason, Web Speech was not able to pick up my commands during the talk.
There are clearly loads of “magic” possibilities for the smart bulb, and maybe even other IoT/Bluetooth LTE connected devices we could do tricks with! I’d love to hear any great ideas you have in the comments — a part of me is thinking I might build some more tricks and take this magic show on the road! ?
Wireshark in Action
One of the main advantages of the swing magic driver is its versatility. It can be used by golfers of all skill levels, from beginners to professionals. It can be used both indoors and outdoors, making it convenient for practice sessions in any weather conditions. Using the swing magic driver requires proper setup and positioning. The golfer needs to hold the club correctly and align their body properly to get accurate feedback. It is recommended to use the device under the guidance of a golf instructor or coach to ensure correct usage and to maximize its benefits. When using the swing magic driver, golfers should focus on consistent practice and attention to detail. Regular use of the device can help train muscle memory and promote better swing mechanics. However, it is important not to rely solely on the device, as it is essential to transfer the improved swing mechanics to real golf shots on the course. In conclusion, the Kallassy Swing Magic Driver is a training aid that can help golfers improve their driving skills. It offers instant feedback on swing mechanics and promotes proper alignment and timing. With regular practice and attention to detail, golfers can develop a consistent and efficient swing using this device..
Reviews for "Enhance Your Golf Performance with the Kallassy Swing Magic Driver"
1. Samantha - 2 stars -
I was really disappointed with the Kallassy swing magic driver. The product claims to improve your golf swing, but I didn't notice any difference in my game after using it. The device itself feels cheaply made and doesn't seem durable enough to last. Overall, I would not recommend it to anyone looking to improve their golf swing.
2. John - 1 star -
I purchased the Kallassy swing magic driver hoping it would help me with my golf swing, but it was a complete waste of money. The instructions provided were vague and did not give clear guidance on how to use the device effectively. Additionally, the construction of the swing magic driver felt flimsy and unstable. I would not recommend this product to any serious golfer.
3. Emily - 2 stars -
I found the Kallassy swing magic driver to be rather ineffective for improving my golf swing. The product itself did not feel comfortable to use and it didn't provide the desired results. I also noticed that the swing magic driver was not compatible with certain aspects of my swing technique, further limiting its usefulness. Overall, I was disappointed with this purchase and would not buy it again.
4. Mark - 1 star -
The Kallassy swing magic driver did not live up to its claims at all. Despite using it consistently for several weeks, I did not experience any noticeable improvement in my swing. The device's design and functionality were also subpar, making it difficult to use and navigate. I would not recommend wasting your money on this product.