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how to build bluetooth device? Answered

I wanted to turn on/off the LED light from my bluetooth enabled cell phone and building cost can be around $10, not above $10 :) . Is it possible?

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jaredwolff

7 weeks ago

Bluetooth devices are super cheap. I wouldn't be surprised if you could create something like this for less than $10 in volumes.

It depends on what type of LED light though. Is it AC powered? If so I wouldn't bother messing with AC mains.

If it's DC powered, you'll just need a Bluetooth Low Energy module + a MOSFET + relay (if extremely high current, usually a MOSFET will suffice) Rigado makes some decent modules. Fanstel also makes some super cheap modules: https://www.fanstel.com. $3.75 for a pre-certified NRF52810 module!!

I put together some great resources on bluetooth device development. In particular I have some recommendations on how to power them. (An important point if you haven't already thought about it!) Check out out here: https://www.jaredwolff.com/getting-started-in-pro...

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Tyharr12

2 years ago

Hey, im trying to find out if you can make Bluetooth headphones, for cheap. have LOTS of pair of old earbuds that no longer work, plus a pair of Beats, and some old RC car stuff... i am tired of the cords, and i am a novice at this kind of stuff. im trying to make my Beats, or even one of my pair of earbuds Bluetooth. can anyone help?

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frollard

7 years ago

no.

you need 2 things;

an app on the phone willing to open the bluetooth stack's serial port (if available on your model)

and a bluetooth enabled circuit that listens for that serial connection once paired to control the light.

Basically...not for anywhere near 10 dollars. Then there's the programming part - possible but takes some learnin'

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ryan.mauricio.5frollard

Answer 4 years ago

Seems like you know what your talking about. Where would I look to find some one who can build me a device if I paid them. I have a great idea for a blue tooth product.

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algaly

4 years ago

Did you manage to create this device?