My belts seem to be extremely loose while calibrating for the first time. I am very concerned they are going to get mangled so I have cut the calibration short to prevent this just incase. I have it mounted to the floor of my garage if that helps. I had to change my retraction value to 2400 yesterday to get the belts to retract, could this be the cause?
Could anyone chime in and say whether this is normal?
It is expected that you’ll have to tend the belts during the first parts of calibration, especially if your frame is horizontal.
That still looks like a bit much, but you might just want to try again and tend the belt so it stays wound flat until it tightens on its own.
Ah good advice. It all goes tense very nicely at the start but when it starts doing the 3x3 it all goes wacky.
Got any advice with technique for tending the belts?
Pull away from the Maslow gently and keep it directly coiled against the spool.
George wrote:
Ah good advice. It all goes tense very nicely at the start but when it starts doing the 3x3 it all goes wacky.
you probably need to increase the calibration current setting (especially if you
increased the retraction current setting)
after the first 4 points, it should be pretty good
David Lang
Ah that sounds like it might do it. Is there an easy way to do this? I can’t see an option in the ui anywhere?
Thanks!
This looks normal to me during the first 3x3 grid. After that the machine should get a better sense of it’s size and be able to keep tension on all of the belts
George wrote:
Ah that sounds like it might do it. Is there an easy way to do this? I can¢t
see an option in the ui anywhere?
to to the place where you would upload firmware and look at the other tabs
there, one of them gets you to a long list of parameters, you can set it there
or you can edit the maslow.yaml (warning, it is very sensitive to the format,
including whitespace)
David Lang
I have seen that much less in .73/.74/.75 firmware, so make sure you have upgraded to the latest release .bin/.yaml/.index.gz
Hi David,
I have changed those values to the same as my retraction value (2400). I followed the advice to manually take up the slack during calibrations too. It now seems that I am getting a warning about my fitness levels at the end of the cali. I have attached the results. Do you have any advice on how to fix this?
[MSG:INFO: Zeroing z-axis position]
[MSG:INFO: Zeroing z-axis position]
[MSG:INFO: Measured waypoint 0]
[MSG:INFO: Center point deviation: TL: 0.237 TR: 0.292 BL: 26.741 BR: 23.826]
[MSG:INFO: Measured waypoint 0]
[MSG:INFO: Center point deviation: TL: 0.237 TR: 0.292 BL: 26.741 BR: 23.826]
[MSG:INFO: Measured waypoint 1]
[MSG:INFO: Measured waypoint 1]
[MSG:ERR: Measurement error, measurements are not within 2.5 mm of each other, trying again]
[MSG:INFO: Max deviation: 3.135]
[MSG:INFO: Bottom Right 2167.135]
[MSG:INFO: Bottom Right 2167.114]
[MSG:INFO: Bottom Right 2167.146]
[MSG:INFO: Bottom Right 2167.157]
[MSG:INFO: Top Right 2477.397]
[MSG:INFO: Top Right 2477.204]
[MSG:INFO: Top Right 2477.129]
[MSG:INFO: Top Right 2477.107]
[MSG:INFO: Top Left 1897.713]
[MSG:INFO: Top Left 1900.848]
[MSG:INFO: Top Left 1900.998]
[MSG:INFO: Top Left 1901.127]
[MSG:INFO: Bottom Left 2253.142]
[MSG:INFO: Bottom Left 2252.970]
[MSG:INFO: Bottom Left 2251.370]
[MSG:INFO: Bottom Left 2251.392]
[MSG:ERR: Measurement error, measurements are not within 2.5 mm of each other, trying again]
[MSG:INFO: Max deviation: 3.135]
[MSG:INFO: Bottom Right 2167.135]
[MSG:INFO: Bottom Right 2167.114]
[MSG:INFO: Bottom Right 2167.146]
[MSG:INFO: Bottom Right 2167.157]
[MSG:INFO: Top Right 2477.397]
[MSG:INFO: Top Right 2477.204]
[MSG:INFO: Top Right 2477.129]
[MSG:INFO: Top Right 2477.107]
[MSG:INFO: Top Left 1897.713]
[MSG:INFO: Top Left 1900.848]
[MSG:INFO: Top Left 1900.998]
[MSG:INFO: Top Left 1901.127]
[MSG:INFO: Bottom Left 2253.142]
[MSG:INFO: Bottom Left 2252.970]
[MSG:INFO: Bottom Left 2251.370]
[MSG:INFO: Bottom Left 2251.392]
[MSG:INFO: Measured waypoint 2]
[MSG:INFO: Measured waypoint 2]
[MSG:INFO: Measured waypoint 3]
[MSG:INFO: Measured waypoint 3]
[MSG:INFO: Measured waypoint 4]
[MSG:INFO: Measured waypoint 4]
[MSG:INFO: Measured waypoint 5]
[MSG:INFO: Measured waypoint 5]
[MSG:INFO: Measured waypoint 6]
[MSG:INFO: Measured waypoint 6]
[MSG:INFO: Measured waypoint 7]
[MSG:INFO: Measured waypoint 7]
[MSG:INFO: Measured waypoint 8]
CLBM:[{bl:2205.70, br:2203.92, tr:2179.71, tl:2181.23},{bl:2103.02, br:2096.23, tr:2285.67, tl:2286.84},{bl:1903.21, br:2251.30, tr:2476.98, tl:2167.18},{bl:2065.00, br:2329.67, tr:2325.56, tl:2055.54},{bl:2189.68, br:2443.89, tr:2228.89, tl:1945.49},{bl:2322.55, br:2327.61, tr:2076.33, tl:2077.80},{bl:2442.03, br:2191.65, tr:1943.81, tl:2230.41},{bl:2331.47, br:2065.46, tr:2053.97, tl:2327.04},{bl:2242.44, br:1960.07, tr:2165.76, tl:2426.17},]
Computing… This may take several minutes
[MSG:INFO: Measured waypoint 8]
CLBM:[{bl:2205.70, br:2203.92, tr:2179.71, tl:2181.23},{bl:2103.02, br:2096.23, tr:2285.67, tl:2286.84},{bl:1903.21, br:2251.30, tr:2476.98, tl:2167.18},{bl:2065.00, br:2329.67, tr:2325.56, tl:2055.54},{bl:2189.68, br:2443.89, tr:2228.89, tl:1945.49},{bl:2322.55, br:2327.61, tr:2076.33, tl:2077.80},{bl:2442.03, br:2191.65, tr:1943.81, tl:2230.41},{bl:2331.47, br:2065.46, tr:2053.97, tl:2327.04},{bl:2242.44, br:1960.07, tr:2165.76, tl:2426.17},]
Computing… This may take several minutesFitness: 0.1513519 in 100
Fitness: 0.1513519 in 100
Fitness: 0.1513519 in 200
Fitness: 0.1513519 in 200
Fitness: 0.1513519 in 300
Fitness: 0.1513519 in 300
Fitness: 0.1513519 in 400
Fitness: 0.1513519 in 400
Fitness: 0.1513519 in 500
Fitness: 0.1513519 in 500
Fitness: 0.1513519 in 600
Fitness: 0.1513519 in 600
Fitness: 0.1513519 in 700
Fitness: 0.1513519 in 700
Fitness: 0.1513519 in 800
Fitness: 0.1513519 in 800
Fitness: 0.1513519 in 900
Fitness: 0.1513519 in 900
Fitness: 0.1513519 in 1000
Fitness: 0.1513519 in 1000
WARNING FITNESS TOO LOW. DO NOT USE THESE CALIBRATION VALUES!
WARNING FITNESS TOO LOW. DO NOT USE THESE CALIBRATION VALUES!
Do you have more than one web browser connected? I see duplicate messages and I’m wondering if that is what might be happening. During calibration I have found that if I have a browser open in my office while in the shop doing calibration they can interfere with one another.
If you don’t have multiple, maybe a “hard refresh” of the browser (open it in incognito/private tab or clear the cache on the browser)?
Just done a hard refresh and not getting duplicates anymore. I am still getting a fitness warning though. Could anyone explain what this means?
[MSG:INFO: All belts extended to center position]
[MSG:INFO: Zeroing z-axis position]
[MSG:INFO: Measured waypoint 0]
[MSG:INFO: Center point deviation: TL: 0.272 TR: 0.244 BL: 28.545 BR: 24.336]
[MSG:INFO: Measured waypoint 1]
[MSG:INFO: Measured waypoint 2]
[MSG:INFO: Measured waypoint 3]
[MSG:INFO: Measured waypoint 4]
[MSG:INFO: Measured waypoint 5]
[MSG:INFO: Measured waypoint 6]
[MSG:INFO: Measured waypoint 7]
[MSG:INFO: Measured waypoint 8]
CLBM:[{bl:2207.51, br:2204.43, tr:2179.66, tl:2181.26},{bl:2075.58, br:2076.97, tr:2325.11, tl:2316.54},{bl:1943.26, br:2241.73, tr:2443.33, tl:2167.24},{bl:2065.75, br:2329.75, tr:2325.52, tl:2055.53},{bl:2189.13, br:2443.93, tr:2228.93, tl:1945.54},{bl:2318.09, br:2285.85, tr:2076.31, tl:2116.49},{bl:2441.97, br:2166.29, tr:1943.75, tl:2253.74},{bl:2325.12, br:2054.61, tr:2065.47, tl:2332.89},{bl:2228.36, br:1944.61, tr:2187.18, tl:2437.51},]
Computing… This may take several minutesFitness: 0.1522897 in 100
Fitness: 0.1524100 in 200
Fitness: 0.1524100 in 300
Fitness: 0.1524100 in 400
Fitness: 0.1524100 in 500
Fitness: 0.1524100 in 600
Fitness: 0.1524100 in 700
Fitness: 0.1524100 in 800
Fitness: 0.1524100 in 900
Fitness: 0.1524100 in 1000
Fitness: 0.1524100 in 1100
WARNING FITNESS TOO LOW. DO NOT USE THESE CALIBRATION VALUES!
I plugged this CLBM line into the simulator here: m4cal.etckinner.com and got:
Calibration values:
Fitness: 0.5828897154005991
Maslow_tlX: -42.7
Maslow_tlY: 2257.0
Maslow_trX: 3708.0
Maslow_trY: 2340.0
Maslow_blX: 0.0
Maslow_blY: 0.0
Maslow_brX: 3713.5
Maslow_brY: 0.0
Do these numbers look close to what your frame is? maybe enter these values in and try again?
The fitness warning is saying that the calculated results are questionable. this
is a 1/error number, so a value of .17 is saying that it thinks that the anchor
positions it’s calculated may be off by up to about 6mm.
This probably means that during the calibration, the belts weren’t reliably
tight, caught on something, or caused the frame to flex.
David Lang
Got it. Managed to get it all working by changing the measurements to be more accurate. Thank you everyone for your help!
George