Bluetooth SPP-C serial module- Hack to 5 - 16V VCC

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JRD McLAREN
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Bluetooth SPP-C serial module- Hack to 5 - 16V VCC

Post by JRD McLAREN »

If anybody need to use BT Serial module in your car, without "base board"
here is a short guide

Ebay gives this modules based on BK3231S chip
(with 5 pins)
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5426.JPG
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5426.JPG
DSCN5426.JPG (302.94 KiB) Viewed 2447 times
We need to remove one R0 rezistor
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5445.JPG
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5445.JPG
DSCN5445.JPG (278.28 KiB) Viewed 2447 times
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5434.JPG
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5434.JPG
DSCN5434.JPG (321.73 KiB) Viewed 2447 times
Solder 1uF cap SMD 0402
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5436.JPG
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5436.JPG
DSCN5436.JPG (293.55 KiB) Viewed 2447 times
Then solder any kind of LDO stabilizer in SOT23. (AP2210N-3.3TRG1 or MCP1754ST-3302E/CB or XC6206 3.3V)
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5439.JPG
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5439.JPG
DSCN5439.JPG (303.17 KiB) Viewed 2447 times

...repeat it :mrgreen: ...
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5441.JPG
http://195.28.90.62/dohc/ostatne/SPP-C_BK3231_12V-HACK/DSCN5441.JPG
DSCN5441.JPG (291.01 KiB) Viewed 2447 times
...and that's all FOLKS ......

Stabilizer MCP1754ST-3302E can handle 16V input ... ideal for automotive use ...
Last edited by JRD McLAREN on Tue May 04, 2021 7:38 pm, edited 3 times in total.
.. some Proteus and microRusEFI for sale in Europe ..
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AndreyB
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Re: Bluetooth SPP-C serial module- Hack to 5 - 16V VCC

Post by AndreyB »

Forum posts hosting images external hosting especially just an IP address are not reliable

Please edit
image.png
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JRD McLAREN
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Re: Bluetooth SPP-C serial module- Hack to 5 - 16V VCC

Post by JRD McLAREN »

it is Google Chorme or Chromium browser problem ...
(so .. wait for edit)

EDETED: .. edited ..
.. some Proteus and microRusEFI for sale in Europe ..
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AndreyB
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Re: Bluetooth SPP-C serial module- Hack to 5 - 16V VCC

Post by AndreyB »

Please attach images to your post.

I am not willing to take a risk of the magic IP address going down.
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Lambo97
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Re: Bluetooth SPP-C serial module- Hack to 5 - 16V VCC

Post by Lambo97 »

Hey JRD would you be interested in building me a few of these. I can desolder but would have trouble soldering the cap.
JRD McLAREN
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Re: Bluetooth SPP-C serial module- Hack to 5 - 16V VCC

Post by JRD McLAREN »

you have PM ..
.. some Proteus and microRusEFI for sale in Europe ..
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