How to make a diagnostic bluetooth cable for Car Gas cylinder equipment System LPG and CNG.

How to make a diagnostic bluetooth cable for Car Gas cylinder equipment System LPG and CNG.
To make a diagnostic Bluetooth cable for the automotive LPG and CNG gas cylinder equipment system, you need the following details.
1. Automotive electrical connectors 4-pin.
2. COM to Bluetooth Adapter.
3. 12V DC to DC.
4. Cable wire.
This diagnostic Bluetooth cable can be used on cars with STAG or DIGITRONIC gas systems, and can also be used on other gas systems that have a similar cable pinout, for example AGIS, AC, KME, LOVATO, ATIKER, ESGI, MILANO.
Как сделать диагностический Bluetooth-кабель для автомобильной системы газобаллонного оборудования LPG и CNG.
Чтобы сделать диагностический Bluetooth-кабель для автомобильной системы газобаллонного оборудования LPG и CNG нужно следующее детали.
1. Автомобильные электрические разъемы 4-контактные.
2. Адаптер com-bluetooth.
3. 12 В постоянного тока в постоянный ток.
4. Кабель провод.
Этот диагностический Bluetooth-кабель можно использовать на автомобилях с газовыми системой STAG или DIGITRONIC, а также можно использовать на других газовых систем у которых распиновка кабеля похоже, например AGIS, AC, KME, LOVATO, ATIKER, ESGI, MILANO.

[@suhayljoom]

Sir, can you give us the wiring diagram for the connection because it's not clear at all on the video you make? It difficult to understand?

[@vivekp2368]

Hi, can you please share how you have configured the hc05 , like baud rate and other things

[@HaykGabrielyan-official]

To be honest, I connected the laptop and set up the gas equipment without any settings. but there are times when you need to swap RX and TX

[@vivekp2368]

@@HaykGabrielyan-official, i have tried doing it but it doesnt work for me!!

[@alexandr_84]

​@@vivekp2368какой у вас блок ?

[@Gopal_Suthar]

Slow data communication working in stag qmax plus any solutions?

[@alexandr_84]

Нужно изменить скорость на 57600

[@MilanalM]

GREAT and simple, thanks.
I have ordered the parts, will see if will work with my STAG LPG mounted on Corolla E15. Maybe there is an option to connect via USB, if you can make it and show.
Greetings from Macedonia

[@HaykGabrielyan-official]

yes, there are possibilities for USB connection

[@disturbator]

my cable has only 3 pinst but my lpg computer has 4 .. will it work ?

[@HaykGabrielyan-official]

1 pin GND , 2 pin +12v , 3 and 4 pin RX and TX signal.
if you connecting cable no need +12v pin. if connecting bluetooths +12v for power bluetooth connector.

[@MrMoradino]

هل يمكنك وضع رسم لربط الاسلاك

[@baghdoshvili2309]

are you mean 12v to 5v?

[@HaykGabrielyan-official]

yes