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Messages - Zax

Pages: 1 [2] 3 4 ... 449
16
T2 Engraving / Re: Using T2Laser to engrave on Cylindrical Objects
« on: September 24, 2019, 04:15:16 AM »
Yes, that's the pot to adjust current limit but it should be OK. Yes the motor will be getting more current than when there's 2 motors but it can take it (you just get more torque).

17
Benbox / Re: y-axis not working mostly
« on: September 24, 2019, 04:14:08 AM »
It could be a software or firmware issue, that's a really old combination.

18
Benbox / Re: New to Laser x moves but Y doesnt
« on: September 21, 2019, 09:52:03 AM »
0.35 and 0.7 would be my recommendation, 0.8 ref is 1A which is the max for the driver without heatsink and fan which most don't have. If the motors stall (jam) with that setting you'll easily damage the driver.

19
General Discussion / Re: Greetings, and some assistance please
« on: September 21, 2019, 03:56:28 AM »
Using a PC PSU would be OK, and a good idea to rule out that component.

The stepper motors rarely fail, the drivers are also fairly robust unless runing near their limit or if you move the machine manually with then connected (back-EMF causes failure quickly).

All laser modules use the same type of diodes, most are overdriven so for example a 5.5W module or a 15W will actually be a 6W diode. The 5.5W example will last almost forever providing it has a reasonably sized heatsink and fan while the 15W (which is probably close to 12W) will last a few hundred hours at best.

20
Benbox / Re: y-axis not working mostly
« on: September 21, 2019, 03:46:45 AM »
What software / firmware?

21
General Discussion / Re: Greetings, and some assistance please
« on: September 20, 2019, 05:20:41 PM »
The laser / power consumption would not change.

A good rule is allow 0.5A for each motor, 1.5A remaining for a 3W laser should be sufficient (although not much margin if the 3A supply is weak).

22
General Discussion / Re: Greetings, and some assistance please
« on: September 20, 2019, 04:41:04 AM »
It could be, it does look like it was working until it started to heat up.

23
General Discussion / Re: Greetings, and some assistance please
« on: September 19, 2019, 06:05:02 PM »
Grbl is also very robust and unlikely to be the cause of your problems, they are almost certainly mechanical.

24
General Discussion / Re: Greetings, and some assistance please
« on: September 19, 2019, 05:21:36 AM »
It's not a T2Laser problem, you can always confirm that by looking at the G-code simulation "view". This viewer is entirely separate from the G-code generator and a true representation of the output. So then the question is what is causing these lines, most likely it's mechanical, possibly the wheels as it's repetative.

25
Trouble Shooting / Re: 2.5W diode TTL wiring help
« on: September 18, 2019, 11:53:17 AM »
5VDC is within TTL levels, yes - see if that turns the laser off. If this is from a separate board / PSU you need to connect a ground to the TTL- as well.

26
Trouble Shooting / Re: 2.5W diode TTL wiring help
« on: September 18, 2019, 10:40:31 AM »
Does the laser have any jumper or switches to change modes?

If not, and it turns on when power is applied that means the logic is inverted so my options are your choices. Apply HIGH to the TTL and see if it turns off when powered, that would confirm.

27
Trouble Shooting / Re: 2.5W diode TTL wiring help
« on: September 18, 2019, 08:14:04 AM »
I believe you have a module with inverted logic, meaning it requires a HIGH signal (>~3VDC) on the TTL to switch the laser off. So it is at full power when the TTL is low.

You have 2 options.
1. Use a logic inverter on the TTL input and power directly, this will allow normal control of the power
2. Use a MOSFET to control the 12VDC with PWM, this should still allow power control but you'll need to ensure the MOSFET has sufficient heat dissipation not to fail (heat sink and fan)

28
T2 Engraving / Re: Bluetooth connection
« on: September 16, 2019, 10:50:40 AM »
Yes. 115200 N-8-1.

115200 baud rate
No parity
8-bits
1-stop bit

29
Laser Modules / Re: NEJE 20W Temperature sensor
« on: September 16, 2019, 05:04:05 AM »
This is slightly worrying, the thermocouple should be used as feedback to the laser driver to control current and prevent it from thermal runaway. I wonder if this is just an additional output and they are already using it internally or if you are supposed to use an external driver with this capability.

30
General Discussion / Re: i will leave this here
« on: September 16, 2019, 05:02:01 AM »
I haven't had any spamming issues with Endurance, perhaps I have enough block-up protection to prevent it. George is a standup guy and supports his equipment, which is why I recommend them for people needing the "next level" of power. In most cases if you want a machine for cutting I would suggest a CO2 laser for the value, a cheap "40W" CO2 is ~36W output for much less initial cost.

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