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makerbase-mks / MKS-DLC32

MKS DLC32 motherboard kit, which is an offline engraving master control kit developed for desktop engraving machines. The hardware is equipped with a 32-bit high-speed ESP32 module, integrated WIFI function, and directly drives a 3.5-inch touch color screen; it can realize fast engraving and WEB web pages. Control, mobile phone APP control and other functions.
https://www.aliexpress.com/item/1005003183498253.html?spm=a2g0o.store_pc_home.productList_8356958.pic_0
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Constant voltage at the pins of the laser connector #239

Open zmei46 opened 2 years ago

zmei46 commented 2 years ago

Hello! Help fix the problem of constant voltage 11.4 v on the outputs of the laser connector. There is a constant voltage of 11.4 v on pins G and V which causes the laser to burn constantly at full power. At the TTL pin, the voltage appears as expected when the LazerGRBL program is running, but the laser is not controlled, it is constantly on. MKS DLC32 board, firmware V2.0.8_H35_20220105_N.

TimE83 commented 2 years ago

I'm having a similar issue, though I have a 2 wire laser 12v 5.5w. and a breakout board for it. I'm also using a 3018 machine. But using the various types of firmware, seem to be getting 12v at both spindle and laser ttl 3 connection as you say. I can't find anywhere to change pin definitions. I believe it's up to the firmware.

zmei46 commented 2 years ago

I used the connection according to the attached instructions to the board.

2022-06-24_164350

abinoer commented 2 years ago

@zmei46 The voltage of G and V is constant. There's no problem. Please confirm whether your laser is controlled by TTL signal, maybe there is something wrong with your laser.

zmei46 commented 2 years ago

The laser is fine - I tested it on my other machine with a different board and it works great. Everything on this board is adjustable and works great. I checked the signals for G and V - the voltage appears only when the burnout program is turned on.

H6252947bb06147fcaacc27a8dc38501bT Ha6f21b301a2c434f94ffdce12dd352a8w .

abinoer commented 2 years ago

Is your laser TTL signal controlled？Or through the 12V PWM control

zmei46 commented 2 years ago

Here is a photo of my laser

Screenshot_20220627-202353 .

abinoer commented 2 years ago

5259e1189da137f3d6aac9acd856c90 OR 5629359e436002ed9dc8af5b70abb25 Try the preceding two connection modes

zmei46 commented 2 years ago

Today I made a connection according to the second scheme - the laser control worked, although the laser does not turn off completely, but continues to burn and the power can be increased with a regulator on the laser. Well, in general, you can work, but you have to adapt. I wish the programmers would fix this. Сегодня сделал подключение по второй схеме - управление лазером заработало, правда лазер не выключается полностью а продолжает гореть и мощность можно увеличивать регулятором на лазере. Ну вообще работать можно, но надо приспособиться. Хотелось, чтобы программисты исправили это.

zmei46 commented 2 years ago

Thank you!