My CDC with modem/IBM Bluetooth IV (BMDC-3) bit the dust over a year ago and I finally had a chance to work on integrating bluetooth internally. I had been using a low profile bluetooth adapter, but felt I could do better.
I figured I'd share a brief in case someone else might be interested in bringing their X41's bluetooth to a more current version, and perhaps others can recommend improvements on my hackish implementation.
I tracked down sufficient documentation per the TOKYO-3 (X31 I think) showing on page 41 the connector assignments. I felt pretty lucky finding a wiring of the CDC connector; over the past year I hadn't found any documentation.
I opted to recycle the connector on my failed CDC bluetooth/modem module. I tried to desolder, but my iron's point is not fine enough for that kind of work, so I resorted to scraping the connector off the surface. Nearly all of the contacts came free from the connector, but the plastic was wholly in tact.
I soldered the ends of four insulated, thin wires (1/100th of an inch diameter) to a bluetooth USB dongle (BCM92046DG-CL1ROM Bluetooth 2.1 Adapter). I plumbed the ends of these thin wires in through the header of the salvaged connector and as long as I populated both sides, the connector fits snugly. I suppose I could have leveraged an additional circuit to enable power only when the line BDC_ON is enabled, but I was more keen to get the critter zipped back up before my time off came to an end. So I used the following:
CDC PIN 20 - VCC3AUX => USB Power
CDC PIN 32 - USBP4- => USB DATA-
CDC PIN 34 - USBP4+ => USB DATA+
CDC PIN 36 - GND => USB Ground
I would have preferred to have salvaged Sony UX's UGPZ6 module since it has an RF header, but I couldn't find any diagrams for its data header or any of the eight test points on the circuit card.
Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message
Bluetooth USB 2.1 mod (X41t)
-
- Similar Topics
- Replies
- Views
- Last post
-
-
Anyone here attempt the X61HK mod?
by filipinogamer21 » Wed Nov 08, 2023 6:21 pm » in 51nb and other modded Thinkpads - 4 Replies
- 2079 Views
-
Last post by axur-delmeria
Tue Nov 14, 2023 6:37 am
-
-
-
T60 - How would I do an LED mod?
by connect5 » Mon Nov 27, 2023 4:11 pm » in ThinkPad T60/T61 Series - 9 Replies
- 4101 Views
-
Last post by RealBlackStuff
Wed Dec 27, 2023 3:28 am
-
-
-
Thinkpad 770 Bios mod for cpu upgrade
by franjimo24 » Sun Dec 10, 2023 8:14 am » in ThinkPad Legacy Hardware - 6 Replies
- 5321 Views
-
Last post by solidpro
Tue Jan 23, 2024 4:02 pm
-
-
-
Sourcing the power button for my T25 mod
by LouisDK » Tue Dec 26, 2023 3:08 pm » in Thinkpad T25 Anniversary/Retro - 1 Replies
- 2571 Views
-
Last post by gulencocuk
Tue Jan 02, 2024 3:47 pm
-
Who is online
Users browsing this forum: No registered users and 20 guests