LailaTheElf/KlipperToolboard
1
0
Fork 0
Code Issues 1 Pull Requests Packages Projects Releases Wiki Activity

More status updates and mentions of Can Hat

Browse Source
This commit is contained in:
Pontus Borg 2020-05-29 01:10:43 +02:00
parent 3654c485a9
commit 10da4d9770
3 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

BIN
CanHat.jpg Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 134 KiB

2
PCB/CanHat/CanHat.sch
View File

@ -717,4 +717,6 @@ F 3 "~" H 6250 2000 50 0001 C CNN
1 6250 2000 1 6250 2000
0 -1 -1 0 0 -1 -1 0
$EndComp $EndComp
Text Notes 8000 2350 0 50 ~ 0
TODO: \nAdd decoupling caps\nAdd jumper for terminator\nAdd connectors for power regulator for the PI\nPower connectors point up, not angled\nFuses for each power\nPins for RX/TX direct to tranciever
$EndSCHEMATC $EndSCHEMATC

9
README.md
View File

@ -47,8 +47,13 @@ After a lot of software work and many hours of testing I can report that everyth
* The thermistor input gives a very low noise signal, even at high temperatures. * The thermistor input gives a very low noise signal, even at high temperatures.
* Endstop works * Endstop works
* All mosfet outputs works with reasonable loads (2A at 24V). I do not have a dummy load for very high load testing, but a heater on the FAN connectors and a hotbed to the heater connector... * All mosfet outputs works with reasonable loads (2A at 24V). I do not have a dummy load for very high load testing, but a heater on the FAN connectors and a hotbed to the heater connector...
* The thermals of the TMC2209 seems ok. With no cooling fins or active cooling it reaches 60C (top and bottom) when mounted close to a hot stepper. I should test with a larger stepper (>1.5A) in a hotter environment to see when the TMC shuts down. * The thermals of the TMC2209 seems ok. With no cooling fins or active cooling it reaches 60C (top and bottom) when mounted close to a hot stepper. I should test with a larger stepper (>1.5A) in a hotter environment to see when the TMC shuts down. I am considering a different fab that allows thicker copper layers for better heat spead, and better power margins.
* The CAN bus works good after some software work. It should work fine with up to 8 nodes on each bus, possibly more. I have run 4 boards on the same bus, each with one stepper, simulating a complete 3D printer. * The CAN bus works good after some software work. It should work fine with up to 8 nodes on each bus, possibly more. I have run 4 boards on the same bus, each with one stepper, simulating a complete 3D printer.
It is possible to fit different connectors for most functions. It is designed for mostly angled JST-XH or screw terminals but it's possible to find straight connectors or other 2.54mm for most functions. JLCPCB do not mount through holes so the boards come without connectors. It is possible to fit different connectors for most functions. It is designed for mostly angled JST-XH or screw terminals but it's possible to fit straight connectors or other 2.54mm for most functions. JLCPCB do not mount through holes so the boards come without connectors.
For a larger (>30) production run the boards would have to be panellized, which looks like a non-trivial task with KiCAD. If anyone has experience and wants to help ...
![Can Hat](CanHat.jpg)
As a sub project to this board I have developed a little power and CAN distribution board combined with an STM2515 CAN bus controller in the form of a Raspberry Pi Hat. It is a very simple little board but has turned out to be very valuable. With some more thought put into it I think it will be a good complement to the Huvud tool board. It has to be modified to allow it to be used separate from a Pi with a different CAN controller. It also needs some fuses, a proper isolated CAN tranciever, more flexibility for the CAN termination and connectivity. A an option to fit a voltage regulator to power the Pi from the boards power. And mosfets to power down the boards ... feature creep...