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5.3. APPENDIX C - Frequently Asked Questions (FAQ)
In the previous chapter the table shows examples of issues and possible solutions - maybe there you find a solution of your problem. In this chapter
there is a supplement in the form of frequently asked questions.
Q: What is the minimum required number of connections to run UTCOMP in the car.
A:
Absolute minimum are three power signals (+12V/24V b12V/24V , ignition and vehicle ground). Once they are connected UTCOMP should
work and display information on the display. To switch between screens, connect a keyboard. Connecting the next signal will activate more features.
Q: Can I use my own buttons or keyboard?
A:
Yes. You can use any mono-stable buttons. Please note! Buttons are powered from UTCOMP (+5V) and pressing button shorts line to ground.
Q: Can I use my own display, e.g. a different color or size?
A:
UTCOMP-3 is compatible with all graphic displays with a resolution 122x32pix based on the controller NJU6450, SED1520 and related. UTCOMP-3
works also with OLED displays with SSD1305 driver. UTCOMP-PRO is compatible with all OLED displays with a resolution 256x64pix and SSD1322
controller. You can also connect android device as additional display.
Q: Is it possible to upgrade the firmware on the device?
A:
Yes - if a newer firmware version will be released to the hardware version of UTCOMP.
Q: Where can I find my hardware & firmware version of UTCOMP?
A:
Hardware and firmware version are displayed in the first screen of UTCOMP settings. In addition, both are displayed in the UTCOMP application when
the device is connected via USB cable.