E34 520i - Zegar Arduino - zmiana godzin i minut | Arduino analog clock - changing hours and minute 

Hi, what is the problem? :)

@@SpinoRex I am doing dashboard repairs. And I want to test it at home. I want to check all indicators. Take the speedometer, for example. For example, the rev indicator. For example, the temperature gauge. I would be glad if you help

​@@cihangirasi Not sure if you can do it without specialistic equipment like osciloscope. 1. You can easily test speedometer with Arduino, just put desired frequency on speedo pin and it works, because it is square wave 5 volts. 2. For RPM also square wave is needed, but 12 volts, so Arduino won't help here. That's why I sticked to E36 cluster for my clock project - RPM is also 5V there. 3. Fuel gauge and coolant temp is another story - it works based on resistancy. WHen you connect i.e. fuel pin with ground, it will go directly to Full. When having 50% resistancy, it will go to 1/2 tank etc. If you only want to test full needle move, connecting to ground is enough. 4. Pins needed to run on desk and test: X16/4 - coolant temp resistancy signal X16/16 - ignition power, +12V X16/18 - ground X16/21 - always on power, +12V X16/22 - power when engine running, +12V X16/26 - RPM +12V square wave signal X13060/1 - illumination power, +12V X13060/11 - ground X13060/13 - speed +5V square wave signal X13060/14 - fuel level resistancy signal X16 is yellow connector and X13060 is blue one

@@SpinoRex but my dashboards all e34😞😞😞

@@cihangirasi yes, I know :( I have the same problem