Fun Projects Not to Do: Bluetooth Handset





Introduction: Fun Projects Not to Do: Bluetooth Handset

I found this bluetooth handset while browsing the web. I like the idea but didn't like the "Retro" style. I decided to make my own.

Step 1: Waiting

The first thing I had to do was wait until my favorite one day deal site had bluetooth headsets. Lucky me I got them on a two for Tuesday special. You can use any bluetooth headset, as long as you can disect it. In the mean time I started gathering the other main part, the telephone handset.

Step 2: De-Construction

De-construct the headset and the handset. The headset was easy, unscrew the screw located under the serial label. BTW you can use any bluetooth device and telephone handset you want. To de-construct the telephone handset the process is harder. The unit is sealed very well. Use a flathead screw driver and small mallet to break the seal. This is done by using the screw driver as a chisel to break the sealed seem of the handset. Do this all the way around it. Once the seal is broken the unit can be pried apart.

Step 3: Dry Fitting A.k.a. Test Assembly

Remove the circuit board and mic from the handset. Leave about 1 inch of wire on the speaker. Remove the circuit board from the headset leave the mic attached, clip the speaker leads, you will need them later. Tack solder the handset speaker to the clipped speaker leads of the headset board. Wedge the headset mic into the rubber gasket. At this point you can test the unit with your bluetooth enabled phone. Not only does it work, I CAN HEAR IT! The better quality speaker is much louder than the tiny POS that we started with. (I work in a noisy environment and my headset just isn't loud enough)

Step 4: The Next Step

Once you have tested the unit you can begin final assembly. This requires EXTREME PATIENCE and SKILL. If you are a novice with a soldering iron, stop now. Good thing I got the headset on a two for deal. I mutilated the first one attempting to remove the volume/pairing buttons. Locate solder points for all the external connections; Vol. Up/Down, Answer, Charge Jack. Were you locate the buttons on your handset is up to you. I suggest placing the charging jack in the hole left by the RJ-4 jack. Use thin multi-strand wire to make all your connections. The multi-strand wire will put less stress on the solder pads. Once you have all the peices were you want them it is time to reassemble the handset.

Step 5: Done!

When you are done you will have a Bluetooth Handset that you can use with your phone. I have a classic ringer sound on my phone and since it can only be used as a speaker phone or with the attached headphones, I prefer to use the bluetooth. The handset is just what I need.



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    Very cool.
    Do you think it would be possible to add a separate ringer to the hand set?

    My new and inspired cobra style steam punk bluetooth headset!
    The handle is for turning the device on/of and accept calls/end calls. the interface at the lower back side is for charging. And: it works!

    2 replies

    You should sell those on etsy.

    Where did you find that old retro handset?  It's awesome!  Do you know Austin Powers or something?!?  Sweeeet.

    Hahahah, awesome idea.
    Imagine hearing a classic ringer sound, and then seeing someone pull out that wireless handset out of his pocket :D

    If you don't want that particular model of handset, then Think Geek do their own version. P.S. Your link's broken...


    That looks like an interesting alternative, thanks. Link is old and guess that page was taken down. Thanks for the heads-up.

    very cool project...  i was wondering if there is a way i can bluetooth my psp to be able to use a bluetooth headset where in i can play music or video remotely.

    Ive got an older fluke somewhat like that arent Fluke's awsome?

    Nice, but be very careful in selecting your "donor" handset. The older handsets used speakers with very different impedence, and the driver in the bluetooth set may not be matched. I tried this using an old bakelite handset and could never get the speaker to be audible - there was some noise but not enough for everyday use. The best thing would be to use the original bluetooth speaker to gebin with, and cross-check the impedence before trashing it in favor of the donor headset speaker.

    1 reply

    around 160 -164 ohms is good - see step 3 of instructable...

    Great instructable - just what I needed - built one works great! - thanks :)

    I want to make one out of a complete phone to have in my room so I don`t need to pry my phone out of my pocket to answer it. The only problem is I can`t figure any easy way to make it "answer" the phone when I pick it up off the original phone stand. Good instructable.

    5 replies

    The BT function sw is momentary - you could use a magnet on the phone cradle and a reed-switch in the handset :)

    Perhaps connect the old phone cradle switch to the bluetooth "answer" button ?

    Thought about it but isn't the button momentary on the bluetooth and toggle on the standard phone?

    It's your phone, you're allowed to replace the electrics of the switch. All kinds of possibilities from the mechanical through to using a Bistable triggered on the switch.