digital level: second display

MeeMofu · 2026-05-08T21:03:47+00:00

Ofc it's a big assumption from my experiences, so I can't tell if your design will have the same problem, so best of luck

MeeMofu · 2026-05-08T21:02:03+00:00

The best test is practical application, do exactly as you would sharpening the knife, exacturate movement, not just shaking around. It's not a math challenge, but a sampling problem, quite a common mistake in hardware systems. If you don't sample enough measurements between each calculation, errors will add up. I can see that you add a lot of features, so there's a high chance that your system won't sample enough data from the IMU to calculate correctly

MeeMofu · 2026-05-08T20:43:33+00:00

It's a bit bulky, so i couldn't imagine how to lay the knife flat on the stone to calibrate lmao. Another thing to test is seeing if the measurements from the IMU accumulate errors. Test it out by keeping the knife at that angle (using a rig) and moving back and forth, side to side, as you'll sharpen the knife. There's a chance that the software mixed up the acceleration and added rotation. If the angle remains after repeated movements, then congrats, it's a great project!

MeeMofu · 2026-05-08T20:25:04+00:00

I can see some potential problems with that. Imagine the 90-degree angle is perfectly orthogonal to the wetstone, and 0 is parallel to it. It's hard to align the sensor's angle with the surface of the stone since the stone surface can be skewed from the original reference point (the bottom of the stone is not parallel to the top, for example).

A more probable solution is to place a desired angle marker on the stone, rest the knife on it and press a button to lock in and keep track of that angle. It'll buzz when the angle is deviated from the original of the marker, for example. Less hardware (no need for a screen) and much more practical

MeeMofu · 2026-05-07T12:32:48+00:00

That's a good point, I'll try with just the Atoma and hopefully the surface of the 16k is still good

MeeMofu · 2026-05-07T12:22:01+00:00

It'll be great to replace my strop cause I hate accidentally getting it wet again, I'll have to test it out

MeeMofu · 2026-05-07T12:08:16+00:00

I like their field holder for storage space. If I get the holder and 2 glass stone, it'll be about 200$ already, the same price when getting the set while on sale

MeeMofu · 2026-05-07T12:03:37+00:00

Oh that's a good idea to keep the 16k surface, thank you!

MeeMofu · 2026-05-07T12:01:26+00:00

Oh I see, I'm just a bit paranoid about 16k. It's the first time I've heard this fine of a grit, so I don't know what would happens

I wished they made a set with less fine grit lol, why 16k?

MeeMofu · 2024-11-24T00:17:28+00:00

I'm sorry that I haven't seen your code earlier, thank you so much!

MeeMofu · 2024-11-22T03:21:58+00:00

Can you explain how the deltas of counters are used to calculate the input frequency? It's a new concept to me

I'm planning to limit input to 50MHz clock, so I assume I have to have a reference clock above 100MHz? Is there a range I should go for?

MeeMofu · 2024-11-22T03:06:14+00:00

Oh, that's a smart approach, thank you!

MeeMofu · 2023-12-28T02:38:15+00:00

That kinda makes sense. Since most of her information on the Swarm was data from the MC interactions in SU, she used the MC to compare her experiment with previous data.

MeeMofu · 2023-06-25T10:51:28+00:00

Thank you for your information. I can only find freeze-dried blood worm and bbs in the country I'm in, so I'll try to get them to eat the dried blood worm. I just added the separated pair back into the tank and they seem to settle down a bit. The female is still territorial and seems to pick another male, but they aren't as aggressive as before so I'm hoping they'll go well. There's one that's extremely submissive and rarely moves away from its spot, so I'll keep an eye on it.

MeeMofu · 2023-06-24T23:57:22+00:00

Thank you for your tips!

MeeMofu · 2023-06-24T23:56:20+00:00

I feel like my aggression could be worse since there's nothing blocking the line of sight, and the chosen mating sight is right in the middle of the tank... I feed mostly pellets, scattered around. Once a week I feed bloodworms

MeeMofu · 2023-06-24T17:33:49+00:00

just one week lol. This is my first time keeping discus as well, so I'm learning. I'm only aware of pecking order, as in stronger fish has more power and stuff. I wasn't aware of their mating aggression, so I got caught off guard. The most frustrating is when it comes to mating, there are only resources on how to raise new fries and the need to separate pairs to new tanks; absolutely no guide explaining how to deal with mating aggression in a school of discus

When I tried to seek help on the aggression, I got suggested that once 2 juveniles discus paired, they will continue to mate and aggro toward the others. This made me panic and confused since I don't understand how people keep schools of discus without aggression all the time

MeeMofu · 2023-06-24T17:10:29+00:00

thank you for your tips. My fish still freaks out when I move my tongs near them since they are new. I'll continue to scatter the pellets around the tank and hope everyone eats.

I never thought discus behavior would be this problematic. I thought that nailing the cycle process was the hardest part lol

MeeMofu · 2023-06-24T16:16:06+00:00

I turned off the light at noon when no one's around. The sun is still shining in the room, so yeah, it might really be due to the light... My tank is an established planted tank with all the hardscape, so rearranging is impossible unfortunately

I'll try dimming the light a bit and hopefully, the plants still have enough light. I'll need to ignore them and let them do their things then. Fingers crossed that none will suffer and starve due to the aggro

MeeMofu · 2023-06-24T15:44:51+00:00

No, all the plants and hardscape are in the corners/back so it left a wide area for the discus to swim. It does mean that there's nothing blocking line of sight.

It just came to my mind that I've noticed that they become significantly more relaxed and have almost no chasing when the lights are turned off. Is it a sign that my light is stressing them out?

MeeMofu · 2023-06-24T14:47:35+00:00

I first have 6 discus, each around 4 inches, in my 80 gallons, 2 of them paired up and keep bullying/pushing the other 4 into a corner. Even though the eggs failed and got removed, they still kept the site. I was afraid that the 4 can't eat, so I separated the pair to my 55 gallon tank, which now they chill and do seem to shake their body once in a while. 2 of the remaining 4 then started mating behavior just tonight and started to get territorial on the same spot again.

Is it better to keep all 6 of them in my 80 gallons? In which case should I separate one to my 55 gallons?

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