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Messages - ggallant571

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General Discussion / Re: eleksmaker forum
« on: Today at 11:27:52 AM »
It was hidden from stalkers.

Cutting / Re: cutting speeds
« on: Today at 06:54:39 AM »
The glue in hobby grade plywood is difficult to burn. I get much better results with air assist. Can run hotter (slower speed, higher power) without the wood catching fire. It also blows the char out of the cut path.

Other Software / Re: Cut2D
« on: February 25, 2017, 03:40:12 PM »
We can thank the Blue-ray industry for our laser diodes. Their manufacturing volumes improved yields and funded research into higher power devices.

Last week I ordered components to make a similar machine. Parts, not including laser & electronics, were about the cost of that kit. I am planning on implementing the CoreXY drive as demoed by user pawpawpaw85. I like the use of 2020 aluminum for the base frame. Guess its time to get some of that.

General Discussion / Re: Elekscam software
« on: February 24, 2017, 02:48:21 PM »
I use generic arm development tools with home brew gcode interpreter code. Hope to find and build the "standard" grbl.

General Discussion / Re: Elekscam software
« on: February 24, 2017, 12:29:05 PM »
I have switched to the STM32F303K8 in the Nano form factor. $12 from Digikey & Mouser. Currently operating at 64MHz (Max 72) and software floating point. Hardware FP is eluding me as enabling it for my source code breaks the library build. Slowing removing "all" the STM supplied one source fits all products library bloated code.

Warm comfy feeling not to worry about stack overflow, buffer sizes, and code execution time. There is one problem, the I/O is 3.3V and directly driving the power MOSFET is even iffier than on the 5V Nano.

General Discussion / Re: Elekscam software
« on: February 23, 2017, 08:33:46 PM »
Is it rated for at least 5A? That was a weakness in the prior designs.

General Discussion / Re: Elekscam software
« on: February 23, 2017, 07:15:07 PM »
Do you use the same power switch?

General Discussion / Re: Elekscam software
« on: February 23, 2017, 04:50:17 PM »
Pardon my cynicism but you are from the same company who brought us the L8 controller. Mine lasted less than 3 minutes and the post mortem disection revealed the worst design, layout, manufacturing, & QC that I have ever seen and I have been in the business a long time.

Projects / Re: Can't Have Nice Things
« on: February 23, 2017, 05:50:15 AM »
Current image

Laser Modules / Re: 3.5W Laser Head with TTL Driver
« on: February 23, 2017, 05:11:41 AM »
What do you use for schematic drawing tools?

Laser Modules / Re: 3.5W Laser Head with TTL Driver
« on: February 23, 2017, 04:52:13 AM »

General Discussion / Murphy Lives Here
« on: February 22, 2017, 03:00:36 PM »
My A5 laser has been working great. Recently added homing switches, belt tensionors, and a G2 lens. Order of plate PCV arrived earlier this week and decided it was time to do the job I bought the laser for. The weather is great so I hauled laser, laptop, & plastic to garage so that I might survive the fumes.

Setup with laser near door, inserted card stock do do a test cut, and absolute crap motion. Checked the usual suspects like belts and wheels being tight. All OK. Back to basement for alternate poser supply and simple tools. No difference.

Went and got a stepper motor and it worked on all the stepper motor ports. No load by as expected. Checked the stepper current limits. OK. Switched out stepper drivers. No difference.

Plugged X axis into Y driver. Crap motion on X.

Disconnected Y belt and plugged Y motor into X driver. Works as expected.

Swapped y-motor power cable to x-motor and it works. Appears I have an intermittent open in the cable. Ohms out ok until I flex it. Ordered a bunch from ebay and I may have a beer or two or three and try find and fix the fault. 

Murphy is alive and well and I know his address!!!

Flashing Firmware / Re: Readout Firmware
« on: February 22, 2017, 08:18:25 AM »
Don't forget the simplest of all - generic terminal emulator.

Benbox / Re: How to invert the engraving
« on: February 21, 2017, 11:22:32 PM »
That would imply that they knew what they were doing. I'll stick with random event, more predictable than Chinese QC.

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