Thanks. The bed is an 8 mm. slab of tooling plate, the switch sees it and the LED on the switch reacts.
Whether I set the logic to true or false, it doesn't work. I tried both.
In the meantime I think I might have fried the sensor. It only gives very low sens voltages, now. Maybe I used resistors too low in resistance to split the voltage, I used 1K and 220 ohm. The voltage split was nice, but maybe the current was too high. Looking at other set-ups, they all use values about 10 times as high. To me asking 20mA of the sensor doesn't seem excessive, but maybe it was.
Because of that and because I want a glass plate to print on in the future, I just ordered some bits and bobs for a servo / microswitch set-up. The setup already works with a micro switch on a temporary fixed mount to the printer head, I now just need to make the servo retraction.
Cheers,
Hugo
Whether I set the logic to true or false, it doesn't work. I tried both.
In the meantime I think I might have fried the sensor. It only gives very low sens voltages, now. Maybe I used resistors too low in resistance to split the voltage, I used 1K and 220 ohm. The voltage split was nice, but maybe the current was too high. Looking at other set-ups, they all use values about 10 times as high. To me asking 20mA of the sensor doesn't seem excessive, but maybe it was.
Because of that and because I want a glass plate to print on in the future, I just ordered some bits and bobs for a servo / microswitch set-up. The setup already works with a micro switch on a temporary fixed mount to the printer head, I now just need to make the servo retraction.
Cheers,
Hugo