ultrafere.blogg.se - Ecut 6 grbl

ECUT 6 GRBL FREE

The price difference between a genuine Uno and a genuine Mega is about $16 right now, which in the scheme of building a machine tool with more than three axes is minimal. The relatively low cost of an Arduino is great, but the low cost clones fitted with CH340 chips have been problematic for many (issues page). Something like a Beaglebone Black (ARM with a lot of IO pins) running Grbl would be pretty sweet, there's heaps of spare CPU cycles and memory to enable things like encoders to close the loop and detect + maybe recover from stepper stalls, and the IO pins could also help with more buttons / pendants too. There's a fork of Grbl-Mega based on the ATMega2560 that you might be interested in for 5 (and I think maybe a sixth axis) -Īlso consider what chamnit says in this thread: To that end, I think a a larger MCU/CPU could be the best route.

(related to above) - Having to track / maintain state of "the other GRBL" could be taxing on the MCU.Ĭhamnit has said on many occasions that the 328 chip is pretty much at it's limits.

High step rates (close to 30khz) could mean that there isn't much spare MCU cycles for comms + motion planning on additional axes.

There's not much spare memory in the ATMega 328 that Grbl is based on.

I'm not sure a slave/master approach is the best way forwards for a few reasons: What do you think about my suggestion? Is it realistic? With the same principle, it is possible to build even a 9 channel (or more?) GRBL system. The master needs some modifications to handle the slave's feedback but it remains almost the same as standard GRBL, while the slave needs a greater modification.

ECUT 6 GRBL FREE

This requires one free pin on the master. Obviously, the slave sends back the feedback through the TX pin, so the master in addition to the data from USB must check and control this feedback from the slave. The slave processes just the commands related to A, B and C channels. The master receives data from USB and processes them as usual. The same data received by the RX pin of the master is sent also to the RX pin of the slave. I wish to suggest an idea to expand a standard GRB to a 6 channel GRBL.īecause the GRBL hardware (Arduino and drivers) is now almost inexpensive, I consider to pair two GRBL systems to drive 3+3 channels.īecause the standard GRBL ignores the channels A, B and C commands, and processes just X, Y and Z, I plan to parallel two GRBL (a master and a slave) using the RX port.