About JB4 USB Logger - for BMS JB4 -
Application to log data from BMS JB4 tuning boxes
* This is not associated with the BMS company in any way.
There was no way to use a USB cable connected to a phone/tablet with the JB4, so I made this application.
This will let you connect an Android phone or table using a USB to Serial cable right into the JB4, rather than having to buy an expensive bluetooth module.
A 5v TTL serial cable must be used for the JB4 side - BMS sell them or you can buy or build a custom made one, then a suitable OTG cable for your Android device.
PL-2303HX (MUCH cheaper) or TTL-232R-5V-WE should work if you are making your own USB to serial cable.
What's new in the latest 2.0
Last updated on 2020-10-06
Logging and export working.
Only has timing log for 4 cylinders.
Still unsure about the labelling of some values.
Only has timing log for 4 cylinders.
Still unsure about the labelling of some values.
JB4 USB Logger - for BMS JB4 - APK Information
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Old Versions of JB4 USB Logger - for BMS JB4 -
JB4 USB Logger - for BMS JB4 - 2.0
3.0 MBOct 6, 2020

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