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Duce robot
(@duce-robot)
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Joined: 1 year ago
Posts: 466
2019-09-29 3:22 am  

I've been jamming the sound system in the robot all day definitely needs a charge one more song and raspbian .


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Virgle
(@virgle)
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Joined: 9 months ago
Posts: 1
2019-10-16 12:10 am  

All the machine tools (CNC) I have worked on, their E-Stop removed power from the motors and locked the brakes.  DB1 probably won't be threatening human life, but it should considered that a catastrophic failure could cause a runaway situati0n.


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Duce robot
(@duce-robot)
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Joined: 1 year ago
Posts: 466
2020-01-04 11:12 pm  

Happy new year every one I hope everyone had a good Holiday .looks like db1 is moving along fine I have to play catch up .I kind of got lost in 3 d printer land for a while but the duce robot is back on track .with the 3 d printer on it I doubt it can be autonomous its too big but I did write a small sketch so it can do some moves . I'm still working on all the system's though so maybe some day it will be autonomous they are actually all in place  they just need to be tied into the main frame lol. I can't wait to see some of the other projects it sounds like everyone is moving along just fine.??


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starnovice
(@starnovice)
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Joined: 1 year ago
Posts: 165
2020-01-06 12:00 am  

 @dronebot-workshop

Bill, what dimensions did you use for the Plexiglas shelves?

Pat Wicker (Portland, OR, USA)


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codecage
(@codecage)
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Joined: 1 year ago
Posts: 660
2020-01-19 2:13 pm  

@starnovice

Have you gotten the info yet?

Here is what I'm using (all 1/4" thick):

  1.  1 ea. 6" x 12" piece for the electronics mounting on the rear.
  2.  2 ea. 8-7/8" x 13-1/2" for the two shelves in the tower.
  3.  2 ea. 1-1/2" x 13" for the front and rear bumpers.

The width between the tower uprights is 9" so I went with a slightly smaller width on my shelves so I wouldn't have to trim to get pieces that were slightly off tolerance.  Why I went with 13-1/2" for their length I really don't remember. Could have just as easily been a whole number.  And I haven't gotten a piece for the top yet, but might go with 6" x 12" for that.

Here is where I ordered my plastic: Tap Plastics

The don't offer round pieces, but the will radius corners up to 4" for an additional charge.  So if you ordered an 8" x 8" and then had them radius the corners to 4" I guess you would have an 8" disc you could use as the "turntable" on the tower.  Thinking of going ahead and doing that myself with a hole pre-drilled right at the center.  Their cost for that comes to $17.00 (plus shipping)  That's $10.00 for the 8" x 8" piece, $5.00 for the rounded corners and $2.00 for the hole.

Hope that helps!

SteveG


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starnovice
(@starnovice)
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Joined: 1 year ago
Posts: 165
2020-01-19 3:57 pm  

@codecage

Thank you, in the end I made up my own dimensions and they are pretty close to yours.  My grandson and I just successfully completed the test run yesterday, so making progress.

Pat Wicker (Portland, OR, USA)


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codecage
(@codecage)
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Joined: 1 year ago
Posts: 660
2020-01-19 4:17 pm  

@starnovice

Are some of the DB1 files on GitHub yet?  If they are I haven't found them!

What kind of tests have you run?  I've moved forward, backwards, and spun in each direction, but that's about it so far.  Want to start with some of the functions Bill has mentioned.

I made a PCB for the control board with two Nanos, but now I'm going to do another with just the chips as Bill is doing on his prototype board.  Have all the parts, just need to modify my version 1.0 of the Nano control board and add the other items.

SteveG


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starnovice
(@starnovice)
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Joined: 1 year ago
Posts: 165
2020-01-19 5:11 pm  

@codecage

Basically I am in the same position you are.  I haven't looked at GitHub yet.  Going to finish the wiring today I hope.  I wish Bill had shown some more detail on the power distribution board.  Oh well can't expect him to do everything for us. 🙂 

Pat Wicker (Portland, OR, USA)


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codecage
(@codecage)
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Joined: 1 year ago
Posts: 660
2020-01-19 9:49 pm  

@starnovice

I have designed a power distribution board from a schematic I made that Bill has advised is identical to his.  I however placed screw terminals where he placed the bullet connectors in his design.  I do need to do a version 2 that has larger power traces especially on the 12 volt rail.  My version works just great, I just think that when DB1 gets fully grown the 12 volt traces may need to be a little wider to carry additional amperage.

I could be talked out of one as the minimum order was for five and I've only used one so far.  Same thing for the motor control board using the Nanos.

SteveG


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DroneBot Workshop
(@dronebot-workshop)
Workshop Guru Admin
Joined: 1 year ago
Posts: 543
2020-01-20 12:10 pm  

Sorry, Bill has about a gazillion different things going on right now. I'll update GitHub, Patreon and the Forum with some new DB1 info as soon as I can, but I won't make any promises as to WHEN that will be.

However, I do note that some of the things you've asked for have already been provided in previous DB1 episodes, such as the size of the Plexiglas shelves and power distribution schematic.  So I'm not sure what's missing?  I suppose putting all that information in one place would be useful!

Also, I'm experiencing a problem with the I/O distribution board that is setting me back a bit, it's going to require the oscilloscope to figure it out before I can move on to the other components.

Patience folks, it will eventually come together!

?

Bill

"Never trust a computer you can’t throw out a window." — Steve Wozniak


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codecage
(@codecage)
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Joined: 1 year ago
Posts: 660
2020-01-20 1:48 pm  

Not to worry Bill!

We'd rather have you working on content anyway.  The rest of us can help others out with answers to many, many questions.  I had just discovered I had missed episode 15 of the DB1 series and thought maybe I had somehow not "found" the GitHub repository for DB1 as well.  I think I have all the info you have provided so far, now that I found episode 15.

SteveG


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yogeshtalekar
(@yogeshtalekar)
New Member
Joined: 5 months ago
Posts: 1
2020-02-08 5:16 pm  

Hi,
Thank you very much for this amazing initiative. I am trying to collect the materials/parts you have used.
I see you are using goBILDA 5201 Series Spur Gearmotor with a 53:1 gear down ratio.

I am not able to find those exact models in India. I have shortlisted these two motors as i am fine with slower RPM and high torque. But still not sure which one of these would be better. (One has precision encoder while other has quad encoder). Please help me to choose one so that I can just copy your motor control design to continue.

(1) https://robokits.co.in/motors/encoder-dc-servo/planetary-geared-encoder-motor/rhino-planetary-high-precision-encoder-30rpm-dc-servo-motor

(2) https://robokits.co.in/motors/encoder-dc-servo/planetary-geared-encoder-motor/rhino-high-torque-quad-encoder-geared-dc-motor-30rpm


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