Sealed encoder group buy?

[ToddF]

All,
We have reached the magic number, so the order is a go. I'll shoot for placing the order next Monday, June 3rd. The cost per encoder will be $48.60 each, with a small fee to cover re-boxing and shipping. Price does not include wiring or connectors. I'll PM the poster who made the order commitment with my address so checks can be sent. I'll keep everyone posted on the status of the receipt of the bulk order and the status of team orders. Team orders will be sent out upon receipt of checks.

Here is the updated list of order commitments:
2363: 8
696: 4
192: 8
4063: 4
1836: 8
1912: 8
2175: 4
237: 6
2590: 5

total: 55

Feel free to increase your quantity, or get in on this group-buy until the order is placed.

Then, I expect we'll have a nice CD thread about how to mount, wire and program using the encoders. I received a PM from team 1323 recommending McMaster Carr P/N 71335K52 wire.

[sanddrag]

Can we please get pre-assembled cables with connector along with the encoders? I'd like a 3 foot wire length. Anyone else want cables too?

[ToddF]

Along with the encoder quote, I got a quote for encoder cables. They quoted $7.30 each for part number CA-MIC4-W4-NC-2. (2 feet)

AndyMark sells CA-MIC4-W4-NC-1 for $6.30, and the CA-MIC4-W4-NC-3 for $10.

In the past, our team has taken the AndyMark cables and spliced on enough wire and the appropriate connector to run the encoder lines where they needed to go. We aren't interested in the cable directly from US Digital unless there was a significant cost savings.

I just called and got pricing on the 3 foot cables (part number CA-MIC4-W4-NC-3). For 1-9, $7.80. For 10-49, $7.30. For 50-100, $6.67.

It's not my intent to compete with AndyMark with this group-buy. I'm doing this for free as a service to the community. AM has employees they need to pay. If anyone wants CA-MIC4-W4-NC-3 cables, I would be happy to add them to your order. (If it turns out that the cables add lead time to the order, I would omit them. I don't want the ordering and payment process to go past one credit card billing cycle.)

[ehochstein]

Originally Posted by stevep001

We're interested.

Put 3081 down for 2, unless you hear differently from Steve.

(if it is still possible to add to the order)

[AdamHeard]

what cpr?

[Ether]

Originally Posted by AdamHeard

what cpr?

Originally Posted by ToddF

We're looking at getting part number S4-120-250-N-S-B.

The S4-120-250-N-S-B is 120 CPR.

[AdamHeard]

why not go with the 360?

[peirvine]

Team 2175 would like 4 of the 3ft long encoder cables if they are available.

[ToddF]

Originally Posted by AdamHeard

why not go with the 360?

We are looking at using them for high speed velocity control (encoder attached to shooter wheel, for example). For a given sampling period, a 120 cpr encoder can be used for speed control on a wheel spinning 3X as fast as one on a 360 cpr encoder.

For controlling our drivetrain, the 120 cpr encoder gives .105" resolution on a 4" wheel directly coupled to the axle. If we need better than that, we'll attach to an intermediate gearbox shaft or use a mechanical multiplier.

[sanddrag]

Originally Posted by ToddF

I just called and got pricing on the 3 foot cables (part number CA-MIC4-W4-NC-3). For 1-9, $7.80. For 10-49, $7.30. For 50-100, $6.67.

You can put me down for 4 of the CA-MIC4-W4-NC-3 cables to go with my 4 encoders.

[MrRoboSteve]

3081 is in for 6. This is 4 more than Evan posted earlier.

S

[ToddF]

Order will be placed on Monday. Here is the latest list. Teams, please check to be sure the numbers are accurate. A few people dropped out, so we are just over the min quantity for the group buy.

encoders
2363: 8
696: 4
192: 8
4063: 4
1912: 8
2175: 4
237: 6
3081: 6
1251: 4
(total: 52)

cables (3 ft)
2175: 4
696: 4
(total: 8)

[ToddF]

All,
Order has been placed with US Digital. It should ship tomorrow, UPS ground. I'll send out PM's to team contacts with my address and amounts for your checks.

[ToddF]

All,
The shipment arrived yesterday. I just sent out PMs with the order amounts and my address. Please check your inboxes.

[ToddF]

Shipments to teams 237, 4063 and 696 go in the mail tomorrow.