SAMMYC21 ERCF

dc42

@Th0mpy yes it appears that there is insufficient RAM to create the filament monitor. The SAMC21 has only 32kb. However, the Duet3D tool board supports a driver, filament monitor and accelerometer, so that combination at least should work. What other devices do you have connected to the board and configured? Do you have more than one driver?

jay_s_uk

@dc42 theres 2 drivers on the ERCF

o_lampe

How much extra memory does the UART-driver take? Or is it a replacement for the SPI driver? Maybe you have to clean up the code?

...and wtH is ERCF? Any pointers, please?

R4ffers

@o_lampe Enraged rabbit carrot feeder, similar to smuff. It's a Multi filament unit.

dc42

@Th0mpy you could try the Duet3Expansion 3.5 source together with the 3.5 source for CANlib and CoreN2G. It has about 200 bytes more RAM available.

You could also reduce the sizes of the debug UART transmit and receive buffers in file Hardware/SAME5x_C21/SAMC21/Devices.cpp. They are currently both set to 512 bytes, which is much larger than necessary.

PS - I've just reduced those buffer sizes in the 3.5-dev source code.

Th0mpy

This is great!

From a hardware perspective I just have the two steppers, ir switch, servo, and endstop. There is another unused output but not tied to anything yet.

I will give that a try this evening.

I appreciate the pointers!

Th0mpy

@dc42 That seemed to fix it. Just updating alone to 3.5 was enough to handle the filament sensor, but when I enabled the end-stop it crashed again. I had to reduce a little further so I also reduced buffer sizes for UART.

Everything works together now. Thank you for your help! I have a bunch of manual macros working now so I just need to automate it all.

oliof

@o_lampe

ERCF: https://github.com/EtteGit/EnragedRabbitProject

Canned ERCF: https://github.com/gixxerfast/Canned-ERCF-board

Th0mpy

If you decide to undertake the ERCF, hit me up. I have a few boards that I made. You can't buy just one. I also made some adjustments (manually) to the board to solve the servo issue experienced by some.

I'll post about it later in another thread once I get it a little more automated.

jay_s_uk

@Th0mpy are you using the ERCF sensor under the extruder?

Th0mpy

@jay_s_uk Not at the moment. I am only using the 1/2 bondtech gear in the ERCF itself for confirmation of bowden distance to load the extruder.

I am thinking of adding a sensor in the extruder to simplify, but there is no eloquent way to add a reliable filament sensor (i.e. magnetic filament monitor) to the stealthburner yet. They do have a simple switch sensor but I really don't like the washer approach.

That said, I am playing with the laser filament monitor, which would fit into the stealthburner nicely. It does not, however, work as well with the PET filament. I did contact the manufacturer to get their specs and programming guide for the sensor, but I haven't had time to play with it yet.

oliof

@Th0mpy it may be worth looking into https://reprap.org/forum/read.php?424,889788

Th0mpy

@oliof Good ole Forest Mimms, I had a few of his books from Radio Shack when I grew up.

I will have to check this out, I was considering something like that but was leaning towards something already manufactured. This is cool!

OwenD

@oliof
That is cool.
Have you integrated it on RRF?
If so, can you detail it (in a new post)?

Th0mpy

@OwenD Of course! I plan to share what I have this weekend(ish). I'll post a new thread on the subject.

oliof

@OwenD I have not built that myself, nor integrated into RRF. I am just reading that section of the venerable reprapforum and sometimes interesting stuff comes up.

VoodooBane

@OwenD Did you make a new Post? I am soldering my own canned ercf board now. Can you share the firmware card you used?

OwenD

@VoodooBane
I think you need to ask @Th0mpy
I'm just an onlooker

VoodooBane

@Th0mpy

Hey thompy, Do you have any of the boards still? I would like one from you if you do

@Gixxerfast I sourced a bunch of the SMD components myself. However, it looks to be that some components are missing from your Excel document. I didn't think to look for whatever reason before buying components.

The components you did not include in the Excel sheet and what I am missing.
D1, D2
C3, C4, C6
R8, R11, R12, R13, R14, R15, R16, R17, R18, R19

I really hope I am not screwed...

See my screenshot.
canned.ercf.so.far.jpg
smd list.jpg

VoodooBane

@VoodooBane I was actually able to find what the components where in Kicad.