Robot Wheel Deal

erco

Assuming you want ten... I really like these, they fit on 9g servos like Feetech FS90R and HXT900, see my video below.

Pololu sells these wheels in pairs for $5 plus shipping. Here's a China manufacturer selling them in 10-packs with free shipping. I got ten, they're nice and now I'm getting ten more. It's a nice grippy tire on a nylon(?) wheel.

You can get ten for $20 on Ebay: http://www.ebay.com/itm/291683957334

Even better, you can ten for $18 if you email the seller directly at rcfans88@gmail.com and ask for a Paypal request for Ebay item #291683957334, tell 'em ercost sent you!

Seairth

The listing says they are silicone tires.

erco

Yep, nice & grippy. erco-approved! Ten seemed like a lot initially, but I use them for a lot of projects. I just used 3 to make a 3-wheel turntable platform. Used 2 as idlers, and the third I just used the tire and stretched it over a much bigger diameter plastic circle wheel, worked great.

I used them on my Cruiser robot: http://servo.texterity.com/servo/201601/?folio=36&pg=36#pg36

Whit

Great tip wise one!

lardom

erco, it looks like the seller is offering the wheels and servos together. Is that true?
I'm actually trying to find a deal on standard servos. I want to do some pan-tilt and robot arm experiments. I will grab some of these because it is a great deal.

Publison

lardom wrote: »

erco, it looks like the seller is offering the wheels and servos together. Is that true?
I'm actually trying to find a deal on standard servos. I want to do some pan-tilt and robot arm experiments. I will grab some of these because it is a great deal.

Continuous Rotation is not a good choice for Pan/Tilt.

lardom

I want both types. I want cr servos in my parts bin for future projects. I need standard servos for my current project.

erco

No, that $20 Ebay price is for 10 wheels only, and if you pay direct you can get for less.

If you want standard 9g servos, do not pass Go, go direct to hobby king for top-rated HXT900s, unless you need metal gear servos. And Duane Degn found the cool pan/tilt mech on Ebay. What else you need?

http://www.hobbyking.com/hobbyking/store/__22927__HXT900_Micro_Servo_1_6kg_0_12sec_9g_US_Warehouse_.html

http://www.ebay.com/itm/231425401660

Publison

I have to say the auction is deceiving. Six out of the eight photos show a servo.

MikeDYur

Publison wrote: »

I have to say the auction is deceiving. Six out of the eight photos show a servo.

At least they give you an idea what it looks like assembled, didn't know what to do with it without the servos attached, just bought two and some sensors, got to stay away from this place.

lardom

erco wrote: »

No, that $20 Ebay price is for 10 wheels only, and if you pay direct you can get for less.

If you want standard 9g servos, do not pass Go, go direct to hobby king for top-rated HXT900s, unless you need metal gear servos. And Duane Degn found the cool pan/tilt mech on Ebay. What else you need?

http://www.hobbyking.com/hobbyking/store/__22927__HXT900_Micro_Servo_1_6kg_0_12sec_9g_US_Warehouse_.html

http://www.ebay.com/itm/Premium-Anti-Vibration-Camera-Platform-Bracket-Pan-Tilt-Zoom-for-Servo-Aircraft-/252185079245?hash=item3ab766edcd:g:MG0AAOSwv-NWVUIp

The hxt900, unmodified, is perfect for my purposes. After I get pan/tilt working I want to work on a 4-servo arm. That's the second thing I need. I don't want the 'best' robotic arm during the prototyping stage. My two biggest challenges are coding and circuit design. For example I've used a single button to cycle through several 'modes'. Now I'd rather use several switches arranged in a voltage divider to select a mode directly.