Something is wrong … and I do not know what it is

peirof

Oki am away from home… Later send. The surface is 1 mm set steel metal

mhallett

You will want to put a surface like buildtak, Matte black PEI Or pick up some Matte black High temp oven/grill paint from the hardware store and paint the bed surface. Anything to reflective or clear will make the sensor act crazy. It would also cause the sensor to work fine one minute and be crazy the next.

Billhc83

I would check your connections thoroughly. If you not getting blinking lights when it is powered up you are likely not getting power at the board.

peirof

one possibility…. wiring issue, tomorrow test.

I haved rewiring betewn Duet and IR Sensor.... but think, the wire i have used its not the correct.... to thin.

What wire its adecuate? for aprox 1 m of distance, maybe 80 cms

Thanks..

dc42

The wire gauge isn't critical, although with thinner wires it is more difficult to get reliable crimp connections at the ends of the cable.

peirof

what wire is recommened?

peirof

Hi,

This range of wires can be used?

AWG Number 20-24 (0,8118 mm2 -0,5105 mm2)

peirof

hi…

i have tested with another wires, checked wires in motors.... and dont works, similar behavoir.....

:C

peirof

What can I do?

dc42

@peirof:

Hi,

i replaced BlTouch witj Mini IR Sensor… and until yesterday works fine, but this morning think something is wrong.

Why say this?

A- Because before, when i power on printer flashes, and now, no flashes at start
B- Because before, when i head is near bed, a light power on, and now nothing.
C- And the last... in webcontrol when head was near bead, in Z-probe, marked arround 500, and now marks 700 with grey background.

Some idea?

Thanks

The most likely cause is that there is a bad connection between the IR sensor and the Duet, most likely in the crimp connection at one end of the cable, and probably in the ground wire. If you have a multimeter, please measure the voltage between the VCC and GND pins on the sensor. It should be 3.3V.

peirof

hi,

i have do some test:

1- I have dismount Mini Ir Sensor from Nozzle, and put him near board, with short wires, tested.
2- I have measure voltage between VCC and GND, 2,84 V.
3- I have put close a surface… some photos, the same yesterday...

FIRST TEST - ON A METAL SURFACE

SECOND TEST - SEPARATED 2 MM METAL SURFACE

the lights do not turn on …..

dc42

It's strange that it is only getting 2.84V and not 3.3v Please measure the voltage between the +3.3V and GND pins on the Z probe connector, to see whether the Duet is providing insufficient voltage or the problem lies in the cable.

peirof

hi,

now different measures, now 3,24

Duet Shocket

Ir Probe Entrance

dc42

Thanks. If the sensor is getting 3.26V but the red LED doesn't light up when you put a piece of paper below the sensitive area, then it has developed a fault. I will send you a replacement.

dc42

PS can you confirm that your address for delivery of the sensor is the same as it was when I shipped the original one on 30 October?

peirof

Yes.. The same.
Thanks

peirof

Hi,

confirm has arrived 1 hour ago….

thanks