Quantcast
Channel: Reprap Forum - Controllers
Viewing all articles
Browse latest Browse all 10211

Re: Arduino CNC Shield V3.0

$
0
0
Aha ok, for thermistors it just have to be an analog pin, any of them that is A0 - A5 will work, i proposed A4 A5 because the rest to me looked used so dunno what is connected to them there - if anything is. If you have the board in front you can perhaps choose other pins which have nothing else connected on them. If there is anything connected to a pin already, that would change a lot of how that pin behaves and thats no good.

Thermistor pin has 2 support components, one is a 4k7 resistor to 5v and 10uF electrolitic cap to ground. Then the thermistor connects between the pin and ground, forming a voltage divider with the upper 4k7 resistor. The cap smoothens the feedback function. To test the thermistor, you can just connect any resistor instead of the thermistor, like 300 ohms one, and see that it reports a higher temp value.

To test endstops you need to short them to ground, otherwise they will be considered pressed/triggered.

If you try compile, for enable of Z and E put -1 instead of same value to all. Hope it will compile that way. In between slices Z is disabled, and E can also be disabled at times during which x and y need to move. So if Z and E are not separate, then are -1. Otherwise you can also have that common enable hardwired to ground and then motors will be always on and you basically have no software enable line and in pins.h you put all enable as -1 (for tests, but not a wise thing in practice).

Viewing all articles
Browse latest Browse all 10211

Trending Articles



<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>