After getting the Maslow into 4.1 spec., I blindly grabbed the V1.0 firmware and installed it using the old methods. After reading the instructions I decided to regress to V0.88 and wait for the install video.
Calibration ran through a Fitness Too Low warning several times before completing with a fitness of 0.84445. Frame Flex was TLBR 4.115 and TRBL 3.422.
Are these numbers any good or should I look at reducing frame flex?
The firmware seemed to figure out the frame size pretty well. Using the hourglass frame, I set the extension length to an initial 2000.
I finally had time to do the install 4.1 and firmware to 1.01. In playing around with yaml settings, I noticed that 3 of the motors retract reliably at 900ma, but 1 motor requires 1300ma to retract reliably. Do I need to replace that motor? What would cause the difference?
1300 isn’t crazy I think that’s in the realm of normal variability and I wouldn’t worry about it. I’d just bump the retraction force up to 1300
With the help of the new video, I jumped to V1.02 firmware today (no issues except my rig is outside, so new calibration may be weather related here in Austin)
I could not release belt tension immediately after a calibration the last couple of FW releases. After I pulled the pins on the belts while under tension, the system could retract them. Can release tension be automatic after calibration? The console showed a state change, but no action from the hardware.
What is the rule of thumb going forward about calibration after firmware updates? Is it required each time? If this is a repeated question, please point me to where this is documented.
In terms of hardware, a labeled hole above the reset button on the PCB would be nice (should I give it a shot?),. In the 4.1 upgrade, I liked the closer tolerances used to hold the nuts on the belt spools. Could this be added to the PCB mount push fitted to the top of the Delwalt to make attaching the cooling fan hat easier?
What is the rule of thumb going forward about calibration after firmware
updates? Is it required each time? If this is a repeated question, please
point me to where this is documented.
It’s common for new firmware to include improvements in the calibration routine.
However, what calibration is doing is figuring out what your frame dimensions
actually are. So if you have accurate anchor locations in the config, you should
not need to run a new calibration.
So in general, try your existing calibration and see how well it works. You can
save the maslow.yaml file, then see if the new calibration produces better
results.
I have seen this too. I need to go in an explicitly allow that state change. I need to make sure that it doesn’t mess anything up to release tension there, but I don’t think it should be an issue.
Nope! Once you have a good calibration you shouldn’t ever need to do it again. If you update your firmware using the USB cable it will wipe your settings so you might want to keep a backup of your maslow.yaml file to be safe
I’m not quite sure I understand. Are you talking about a labeled hole in the top of the cover over the PCB?
Yes! Absolutely. I don’t have a short term plan to re-make the mold for that part so it might not be for a bit, but I agree. I’ve been throwing a drop of super glue on the side of those nuts so they stay in place
Yes, the black plastic cover with the fan. I think there is room to insert a paperclip or other rod between the fan blades from the top, so the cover/hat would not need removing.
I was thinking about suggesting folks to that (Ive done it) I’m a little worried about what happens if someone slips and hits the electronics which are powered up with a metal screwdriver. I think it would be pretty easy to fry something that way.
I used a 3/32 wooden dowel to press the button while the cover was on in order to do the USB upgrade. You need to have a steady hand to keep the end of the dowel on the button, but it did work.
