Topics created by vmario89

@vmario89 said in Question abou wiring up laser pointers for projection:

make use of 3.3 Volts of the end stop connectors -> do the end stop outouts survive 30 mA or in total 90 mA?

you cant source or sink 30 mA from an endstop or other normal IO pin directly. The datasheet for the microprocessor is here:
http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-11157-32-bit-Cortex-M4-Microcontroller-SAM4E16-SAM4E8_Datasheet.pdf
The table you want is on page 1355

in this case you may find the easiest option is to use one of the fan outputs to switch the ground side of the circuit with the lasers on it, and then supply the 3.3V either from an endstop header or the expansion header.

@vmario89 I asked @dc42 if this was possible. He suggested that, using the latest 3.01 firmware, you can create a daemon.g file (this always runs in the background), to query the Object Model, check states and run code as necessary. So you could implement this with two loops in daemon.g; the outer loop runs forever, while the inner loop runs when stats.status is idle, doing a G4 delay command, but if 'iterations' get high enough does M81 then M99.

If that sets you on the right track, let us know how you get on! (I'm not a programmer!)

Ian