Wired To Wireless Usb Adapter
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DastardlyLabs saw a video about converting a PS/2 keyboard to Bluetooth and realized he didn’t have any PS/2 keyboards anymore. So he pulled the same trick.
Along the way, he made three videos explaining how it all works.The project uses a stock DuinoFun USB mini host shield with a modification to allow it to work on 5V. An Arduino mini pro provides the brains.
A FT-232 USB to serial board is used to program the Arduino. A standard Bluetooth module has to have HID firmware installed. Dastardly makes a homemade daughterboard–er, shield–to connect it to the Arduino.The result is a nice little sandwich with a USB plug, a Bluetooth antenna, and some pins for reprogramming if necessary.
Wired To Wireless Usb Adapter 802 11n
Resist the urge to solder the Bluetooth board in–since it talks on the same port as the Arduino uses for programming, you’ll have to remove it before uploading new code.If you need help reprogramming the HC-05 Bluetooth module, we’ve before. This project drew inspiration from Evan’s similar project.Posted in Tagged, Post navigation. You have a point there, building the obvious can be a challenge.But building to create the obsolete can be much more rewarding. There are lot’s of folks that have old equipment they want to keep alive and when the obsolete keyboard fails and can no longer be bought in modern shops or if you want a wireless keyboard on your old system well what do we do?PS: I saw the USB host module. I have no experience with USB host related to microcontrollers, but is this difficult, what problems are to expected and what modules is preferred.
Can anyone suggest a usefull source of information about that topic? Seems like it should be possible with off the shelf tools/hardware. If you’d like a starting point the USB Host library does have some code for speaking to Bluetooth HID devices via a usb plugged bluetooth dongle:You’d then need something to emulate a usb keyboard, like a Teensy maybe, then stream and/or translate the incoming BT HID payloads to something the teensy can send via it’s keyboard emulation.Good luck!P.S.
If you just want to eliminate bluetooth altogether you could go the hardcore route and use the teensy or a similar keyboard emulating controller to read the keyboards’ key matrix directly, bypassing the built in controller. More the reason is, I have ideas for using some of those tiny wireless keyboard/touchpad combos that come from eBay’s HK side. You know, the “iPazzPort” ones with the touchpad off to one side and a rounded edge underneath that.
I’m thinking of a portable computer, messenger bag style (meaning case with a shoulder strap), with a wrist-mounted keyboard, mouse, and possibly display. (Mind you, I’m passionately against smartphone/tablet-style onscreen keyboards. Ugh!)However, I refuse to clog up the airwaves around me with signals that have to traverse a distance that’s shorter than I am! (I’m 5’3″ — or 1.6m for those of you outside of the US.) There’s simply no good reason to use that sort of link over that sort of distance, and a couple of very good reasons /not/ to do it that way.For example I don’t know /much/ about BT, but I assume it uses the “channel” paradigm, like WiFi does, mostly because /everything/ wireless seems to do it that way. Well imagine any given Starbucks with a person in every chair. Each person has a smartphone or tablet, and a single BT device (headset, keyboard, etc) that they want to use with their device.
Any given BT device has a range of at least 330ft (thanks, Wiki) do the math, and no matter which way you slice it, some of those people are not going to be able to use their stuff.Now, of course, that’s a bit of an exaggeration — no Starbucks is going to be that full of that many people with that much tech all at once — at least, not in any /likely/ circumstance. But the point remains quite valid — just as “too many cooks spoil the broth”, too many signals spoil the air around them — and with the kind of range BT has, I’d think it unfortunately easy to get to the saturation pointHence, wanting to convert a wireless keyboard (for example) to USB wiredWorth noting — gee, why not just plunk an Arduino Nano in there or a Teensy or whatever? First of all, touchpad mouse. Second of all, the viability of the /keyboard/ portion working that way, depends entirely on how the unit is built. If it’s a membrane keyboard like standard PC keyboards are, sure — you’ll have to wire up your own connectors, or wreck the board to make breakouts, but that’s doable. But if it’s one single PCB with integrated switch contacts and an array of metal domes (or worse, /rubber/ domes, like on your TV remote) — well, as they say where my parents grew up (upstate NJ) — fagheddaboutit.One thought I do have tho — would it be possible to cut the antenna traces on both keyboard and receiver and use coax (the dinky stuff, like WiFi antenna cables use — yes, that stuff /is/ coax, I’ve gotten into it before) to connect the two together directly, and have it come out working?
Normally most Bluetooth devices use a lower power mode for a nominal range of 10m not 100m (what your “330ft” roughly convert to). It is designed as “personal area network”.And especially if I strap something to my wrist I would happily go some extra length to ENSURE there are no cables attached which are not absolutely necessary. This is a question of convenience. I do not want to imagine a backpack with cables dangling to such a device.Of course you could connect the two parts with some coax cable.
For 1-2m you can use very thin coax (like 0.81mm) the attenuation is no problem. Check Chinese retailers such as Aliexpress.com, and you will find that a lot of those factories turn out me-too products.
The soul-crushing experience of two generations of communism and a continuing one-party state has crushed any real spirit of innovation. What one one person makes and sells, another makes and tries to sell a little cheaper.You see that with all the Pixie 40-meter ham transceivers at the store. Someone seems to have sold the first one with a 7.023 MHz crystal and all the copy-cats are doing the same despite the fact that in the U.S. Only hams with an Extra license can use that frequency.
Even marketing one for a slightly higher frequency seems too innovative. What one does, another does. You can see dozens of virtually identical products here.
I have a good wired USB headset (Razer Thresher Ultimate) and was wondering if there is an adapter which I could use to convert them into a bluetooth headset. Then I could use them with my phone, et cetera, as they do a great job with music as well as being very comfortable. I am working on the theory (well my uninformed theory) that it all the signals are digital, so may be possible.So I need a female port USB adapter to plug into the cable on the headset. I can use something (have a pile of velcro ties) to keep the headset cable neat and out of the way.Anyone heard of anything like this?? 99% if bluetooth adapters are receivers, not transmitters.99.9% of said adapters assume they get their power through USB100% of USB headsets want power through USB100% of USB headsets need to be attached to computer so that their inbuilt soundcard can actually work.where would your power come from?
Separate USB battery bank?where would your headsets drivers come from?in short. You are still forgetting that your USB headset needs a CPU to process it's sound output, which needs drivers telling OS how to do it, something which your bluetooth adapters don't do.That is the main reason I said it isn't feasible.USB battery pack, USB powered hub, you could connect headphones and bluetooth adapter (if it doesn't have battery in it) to it but.