Pinda 2 dilemma

fcwilt

the probe doesn't really behave linearly and it doesn't behave exactly the same every time, but marlin algorithm with 2 tables for bed and probe temperature makes a pretty good use of it.

Well it would be easy to implement a table or two with firmware 3.3.x or 3.4.x

Frederick

fcwilt

@sinole said in Pinda 2 dilemma:

repeatability is pretty good

What is "pretty good"?

Thanks.

Frederick

sinole

@fcwilt standard deviation of 8 micron

fcwilt

@sinole said in Pinda 2 dilemma:

@fcwilt standard deviation of 8 micron

0.008 mm? That is very good. And that is at what probing speed?

Thanks.

Frederick

sinole

@fcwilt need to mention my setup triple probes everytime at 5000 speed it backs of only 0.4 mm each probe. you can set that stuff up in marlin, im noobi here i hope i get to do that here too. its a very nice probing setup. you can mitigate a lot of hardware errors with a good software. thats why im using RepRap now the motion system is more advanced.

fcwilt

@sinole

With v3.3.x and 3.4.x you can control:

travel speed (XY movement)
probe speed (Z movement)
dive height (the height above the trigger height where probing starts)
tolerance if probing for 2 consecutive readings
probing behavior (how many times to probe - either for 2 consecutive readings or averaging all readings)
optional delay after XY move before doing Z move

When you say 5000 is that mm/sec or mm/min and is that for XY moves or Z moves?

Thanks.

Frederick

BoA

Personally, I would use SuperPINDA which is temperature compensated internally. Not much more money, a lot less headache Been there, did that.

martin7404

@boa I second that. My initial setup was pinda2 that I had in hand that kind of worked. But since I went for super pinda my 600x400 bed in 60 deg C chamber bed leveling is in 0.08 mm every time

oliof

@sinole the SuperPINDA is made by Pepperl+Fuchs, no Prusa magic. In Europe there are various sellers (VonWange, CR3D, RatRig) selling very similar or identical probes. In the US, SquishWorx carries the SuperPINDA (ref https://squishworx.com/prusa-superpinda/ ) which is the same P+F part Prusa procures as far as I know, for 39$.

BoA

@oliof Basically any internally temperature compensated probe will do (with proper output type obviously). I did some research once and Prusa's was cheapest one that works with 5V power supply (original prusa board back then, not required for duet) and is temp. compensated and in 8mm diameter).