grblHAL
This repo has moved to a new home https://github.com/grblHAL (by terjeio)
grbl-L-Mega
An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on an Arduino Mega2560. Forked from GRBL modified for use on a lathe with spindle sync threading (by MetalWorkerTools)
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| grblHAL | grbl-L-Mega | |
|---|---|---|
| 5 | 2 | |
| 217 | 14 | |
| - | - | |
| 4.2 | 0.0 | |
| over 2 years ago | about 1 year ago | |
| C | C | |
| - | GNU General Public License v3.0 or later |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
grblHAL
Posts with mentions or reviews of grblHAL.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-04-06.
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$38
https://github.com/terjeio/grblHAL/blob/master/doc/markdown/settings.md check this link there is an explanation of grbl code from A to Z
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Electronic leadscrew, or full CNC?
And it looks like pendant support was 'enabled' last year in grblHAL, but I don't see the "I'm with stupid guide" that I would need to connect it.
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General question: Why use an old LPT interface with so many open source controller available?
If you have time, check it out! https://github.com/terjeio/grblHAL/
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Budget budget CNC controllers - what's the bottom line?
You might want to look at grblHAL. It is the 32-bit evolution of Grbl. I make a 5 axis breakout board for it based on a Teensy 4.1. It supports step rates up to 400 kHz which allows you a lot of freedom in selecting microsteps and high speed rapids. All in with the Teensy, it costs about $65-70, depending on options. Here is a gallery with a number of machines based on grblHAL. More about grblHAL here. It is actively being developed with people adding features and porting to new processors (RaspBerry Pico is coming).
grbl-L-Mega
Posts with mentions or reviews of grbl-L-Mega.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-05-05.
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First aluminum project on Sainsmart 3020Pro Max
In the Grbl-L (grbl lathe version, there is also a Grbl-L-Mega version), an input pin is used to measure the spindle speed of the lathe. The same pin is used for G33 spindle synchronization threading.
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I've been retrofitting an old benchtop CNC lathe to run GRBL and cut threads! Let me know what you think.
The interface between the Teensy and Arduino is actually fairly simple. GRBL already has a built in spindle speed output using the Arduino PWM. The Teensy just reads the analog voltage from the spindle speed pin on the Arduino to set the speed. Similarly the output from the Teensy (the synchronization pulse) is just a digital pulse that gets picked up on the GRBL 'Probe' pin. Full details on the GRBL threading implementation are here. The spindle rpm should be reasonable stable under load since the Teensy is running a PID controller using the input from the encoder to keep the speed stable. This means that it can correct the rotational speed ~20 times per rotation.
What are some alternatives?
When comparing grblHAL and grbl-L-Mega you can also consider the following projects:
Grbl_Esp32 - A port of Grbl CNC Firmware for ESP32
grbl-Mega-5X - 5/6 Axis version of Grbl, the open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on an Arduino Mega2560
LPC176x - grblHAL driver for LPC1968 and LPC1769
FluidNC - The next generation of motion control firmware
Kernels - This is a set of simple programs that can be used to explore the features of a parallel platform.
uCNC - µCNC - Universal CNC firmware for microcontrollers
mcmap - Pixel-art map visualizer for Minecraft. Maps are drawn from an isometric perspective.
libopencm3 - Open source ARM Cortex-M microcontroller library
CNCL - Lathe grbl teach-in gui