My first attempt used an NXT motor and 2 gears to mount the ultrasonic sensor, which worked, but just looked bulky and awkward. Made for poor placement.
Over the weekend, I built a direct drive using the older RCX 71427 motor. But still have to build a mount.
Any other ideas?
Thanks in advance!
So, this is my 3rd version. I didn't want to use the older motor afterall, as the encoder is too nice to pass up, but I've noticed mounting the NXT motor always seems abit awkward. Maybe another reason to look forward to the new set coming out!
Hmmm..youtube embedded is not working ??....
YT embedding works with some browsers, or so I've heard. I only use Chrome, and it doesn't work.
I'm all for gun control... that's why I use both hands when shooting
- Posts: 125
- Joined: 24 May 2011, 20:41
- Location: Where ever the military sends me (currently Central Texas)
Here is an idea for you:
"The more you know, the more you know, the less you know."
Now, it shows up. Hmmm....
I was not really concerned about precise movement. I need to compare the gearing with the encoder. From my first tries, the encoder is fairly accurate but I would like to see what it does with this gearing just for fun.
One reason to use the gearing is to reduce motor use, and the other reason was to get it mounted (aesthetically) as I wanted. One more reason, moving gears just look cool.
I DO need to work on the gearing though, if I keep them.
I like the Dexter version, did not think of mounting it like that. And logging the data would be interesting.
Great suggestions there, thanks for the feedback.
Last night I switched over to what you suggested, worm gear and 24t, and it's working much better. My only complaint (the way I set it up), is that my axle out of the motor that has the worm gear has about a 1-2 mm loose swing at the end (I used the 6 or 8 stud size axle). I can improve that by holding down the end, though, but it is still working better than before.
Otherwise, great suggestion. The 24t is much slower but creates a stronger mechanism. When I had my smaller gears on , they would slip (due to the wire on the back of the US sensor) at about 30 degrees. This one can spin around 360 without a problem, even with the wire attached.
Suggestion appreciated...One small step...
Users browsing this forum: No registered users and 4 guests