diyelectronics

518 readers

1 users here now

founded 3 years ago

MODERATORS

diyelectronics@lemmy.ml

I motorized this cat toy and the motor overheated what's a better one to use? (europe.pub)

submitted 1 week ago* (last edited 1 week ago) by StarvingMartist@sh.itjust.works to c/diy_electronics@lemmy.ml

7 comments fedilink hide all child comments

Clearly I'm using the wrong motor, I though I had calculated it out but apparently when it's under load (the mobile part) it heats up to the point that it melted the hot glue holding it in place. Not great, how do I rectify this?

Video of the motor working

Here's the assembly, that's a three AA battery pack

All parts in question Button, Battery pack, Motor

If anyone has any idea of what motor could handle this or what math I'm not calculating for I would really appreciate it

top 7 comments

sorted by: hot top controversial new old

[–] cmnybo@discuss.tchncs.de 8 points 1 week ago (1 children)

You need a motor with gear reduction. Search for "DC gear motor". Look for one that's around 50 rpm.

[–] StarvingMartist@sh.itjust.works 3 points 1 week ago (2 children)

Might actually go for 25 RPM after seeing a visual representation of what that looks like, otherwise even at this speed the cats just kind of sat there getting whacked in the face. If I get a 25RPM motor is it a guarantee that's the speed it'll be or is there some variables with the load?

[–] cmnybo@discuss.tchncs.de 4 points 1 week ago

The motor should run pretty close to its rated speed if it's not hitting anything.

[–] RebekahWSD@lemmy.world 3 points 1 week ago (1 children)

I'm sorry, but I giggled at the thought of a poor cat just getting smacked in the face with a feathery toy at high speed and it just being all "whuh???"

[–] StarvingMartist@sh.itjust.works 3 points 1 week ago* (last edited 1 week ago)

You're right to giggle, they stand there all confused until it gets to like 4 bops and finally decide to get out of there.

They're dumb but we love them.

[–] habitualTartare@lemmy.world 2 points 1 week ago (1 children)

The torque of turning the toy and the speed in that video mean you probably need a gear reduction or a motor/motor kit with lower rpm and higher torque.

Something close to 3-5+ Kg.cm (higher is better) is probably going to work better and keep in mind rpm or rotations per minute should be a lot lower than 12,000 for your use.

[–] StarvingMartist@sh.itjust.works 1 points 1 week ago

I actually do like the speed it's going at but yeah, when there's no load its crazy fast, I'll see what kind of motors I can get my hands on