Recently I've received some questions about OLED display - cable extension.
Original cable is quite short and if you would like to have display on a longer cable, you must take some precautions to have a proper functionality and avoid interferences:
- You must make new cable (I don't reccomend connectors to make cable extender).
- Cable must be shielded, shield must be connected to battery minus! There's plenty of EMC in e-vehicle, which cause interferences on data lines!
- Cable wires must not be too thin. I also don't reccomend "hard wire", but "soft one".
- Put 10 or 22 uF (best fit SMD 0805 size) ceramic capacitor between pins 1 and 2 of OLED! (on OLED side).
- Put 100 nF capacitor on the button pins.
With this, cable can be longer, length up to 5 m is tested in several electric cars. If andy interferences happen, this is usually due to improper cable grounding (shield). However, shorter cable is always better, so try to avoid longer lengths if possible!
Regards,
Gregor
Original cable is quite short and if you would like to have display on a longer cable, you must take some precautions to have a proper functionality and avoid interferences:
- You must make new cable (I don't reccomend connectors to make cable extender).
- Cable must be shielded, shield must be connected to battery minus! There's plenty of EMC in e-vehicle, which cause interferences on data lines!
- Cable wires must not be too thin. I also don't reccomend "hard wire", but "soft one".
- Put 10 or 22 uF (best fit SMD 0805 size) ceramic capacitor between pins 1 and 2 of OLED! (on OLED side).
- Put 100 nF capacitor on the button pins.
With this, cable can be longer, length up to 5 m is tested in several electric cars. If andy interferences happen, this is usually due to improper cable grounding (shield). However, shorter cable is always better, so try to avoid longer lengths if possible!
Regards,
Gregor