Thanks to Duet3D for the replacement!

Recently completed all connections and here are the results of the first print.

Not good, but I am very happy with this result.

@phaedrux Thank you!

Hello. I can not configure the normal printing of the first layer.
My printer is H-Bot with Z optical endstop (locating down below, in Z259), and a DC42 IR sensor. The Home is configured for endstop.
When I home Z and start printing, only the coordinate that the printer assigns to the Zmax affects the distance between the nozzle and bed. As I understand it, with my config, the IR sensor and the bed mesh compensation do not affect the printing of the first layer.
What do I need to do to print the first layer in accordance with the sensor and the bed mesh compensation?
0_1560032253664_config_.g
0_1560032261996_homez.g
0_1560032268546_homeall.g

Thanks to Duet3D for the replacement!

Recently completed all connections and here are the results of the first print.

Not good, but I am very happy with this result.

@dc42 Thanks for the answer! I ordered a Duet in Filastruder with delivery to Russia. Do I need to send a card to Filastruder? Can I contact you in private messages?

@joergs5 Thank you for the link! I checked the diode D2, it seems it is damaged.

I connected the end stops for test. X and Y are switches and Z is optical Lerdge.
When turned on, only some diodes glowed (VIN, 5V+). Wifi was not glowing. I was scared that I had connected the optical sensor incorrectly, turned off the Duet, rechecked the connection, but everything was right. Then I disconnect the VCC line from sensor. The Duet started. The sensor did not work.
Then I connected to the sensor 5V from the expansion (#1 +5V). The Duet turned on, the sensor was determined. At the moment of the optical sensor was closed, element U3 began to smoke. I immediately turned off the Duet.


I have two questions. What did I do wrong and what can I do?

Thank you!