I realized that the led circuit was running on 3.3V and the machine was running on 0.2V.
Hi, I'm currently working on connecting an old espresso maker with an arduino mkr 1010, I am trying to hijack the buttons and use a transistor as switch to close the circuit without pressing the buttons on the machine. The program is working when just trying to turn on and of leds. However when replacing the led circuit with the machines it stopped working. I realized that the led circuit was running on 3.3V and the machine was running on 0.2V. After some searching i found that the transistors cant handle that low voltage but could not find any solution for this. Do you know what i could replace my transistors with? Regards CVHL