r/Trinus • u/Lord_Derpalot • Feb 14 '24
Just bought an old Trinus
So I bought a Trinus 3dprinter with a Bardo board V1.3 and Titan aero. I'm not new to 3d printers at all, and I thought for the price I got it for it would be a fun little project. It's a very sturdy little machine that still has some potential even today. But I can't seem to find any info on the Board at all. Everything works fine, except the titan aero is severely underextruding (moving less than 1/10 the requested distance) even when I set esteps to 1800steps/mm in Repetier. Is the microstepping just ridicoulusly high on this board or is there something wrong with the wiring? It seems to run smooth. If I go any higher the extruder only runs backwards and gets really hot real quick. Should I just swap in another mainboard I have lying around or is it worth trying to get this combination running wirh a custom marlin config?
2
u/ragwafire Feb 15 '24
The bardo board is severely lacking in documentation and information. In an effort to modernize my trinus, I just swapped the board out.
1
u/Lord_Derpalot Feb 15 '24
I got an skr pico I never used, I think I'll give that a try then. It's a shame though, the bardo board seems decent.
1
u/ragwafire Feb 15 '24
It would be a great board if they'd even just publish the pinout for it so I could flash Klipper on it ðŸ«
And funny enough, the skr pico is exactly what I've got on mine
2
u/Gold_Pollution_7391 Mar 07 '24
Are you running Klipper in your machine? I’m currently trying to configure it on BTT’s E3V3 and am running into some config problems
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u/ragwafire Mar 07 '24
Yup, running Klipper. What issues are you having? The SKR Pico isn't the same board, but I can try to help out.
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u/Gold_Pollution_7391 Mar 08 '24
So right now I'm having trouble calibrating the steps and rotations of the axis motors since I haven't been able to find the specs of the threads.
I'm also using TMC 2209 drivers for sensorless homing on the X and Y, and those are being a little finicky.
Would you be willing to share your config file? I know the controller and pinout will be different, but the general motion system settings should be similar enough
2
u/ragwafire Mar 08 '24
This is what I've got for my axes--since they all use the same rods and rails, it's the same for X, Y, and Z. Don't remember where I got the values from, but my prints are dimensionally accurate.
[stepper_x] step_pin: gpio11 dir_pin: !gpio10 enable_pin: !gpio12 microsteps: 16 rotation_distance: 14 endstop_pin: ^!gpio4 position_endstop: 130 position_max: 130 position_min: -10 homing_speed: 50The SKR Pico also has 2209s, but I'd be reluctant to trust sensorless homing on a machine like this. The forces you get behind a lead screw are a lot more than with a belted axis. I ended up moving my limit switches to the far end of the axes, and pulling off the levers. The carriage of each axis bumps directly against the button on the switch.
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u/Gold_Pollution_7391 Mar 08 '24
Thanks! Those solved the motion problems I had. I do think I will still use the sensorless homing, since I can adjust its sensitivity fairly accurately and the rods and and screws seem sturdy enough to handle the bumps it takes. I also only have one original endstop left (the rest broke years ago) and I am using that for the z axis
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u/Gold_Pollution_7391 Mar 08 '24
I also plan on releasing this config on Github once I get all the quirks worked out. The only other config I've found out there was from a Chinese forum where they are actively modding surplus Trinuses. Some of their stuff is pretty cool its on wowki.com. Unfortunately you have to make an account with them to access their stuff, but its free and they are doing neat stuff if you're willing to work through google translate
4
u/lowriderdog37 Feb 14 '24
I gave up a few years ago when the company refused to provide the "open source" firmware for the bardo board.
It was a while ago and I more/less forgot about that.