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GhengisDhon
01-24-2017, 08:50 PM
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We're in the process of updating/standardizing the target plates. I'll be posting the more info on them soon (hopefully this weekend, but we're having a scrimmage so we'll see).

In the meantime, here's a little teasser. The target plates now have flashy lights all of their own.

**Target plate Descriptions and files have now been added here**

https://github.com/ghengisdhon/rbots/tree/master/Target%20Plates%202017

GhengisDhon
01-24-2017, 08:51 PM
https://youtu.be/181ka_Z_mBM

jwatte
01-24-2017, 09:54 PM
Video failed playing for me :-(

Thalvus
01-26-2017, 07:40 PM
I look forward to seeing the updates, maybe I can use this knowledge during construction of my mech for target panel mounting. What are the dimensions for the individual plates?

jwatte
01-26-2017, 08:51 PM
I'm just about ready to mill my new skeleton (Onyx version X!)
Do you have a mount / hole pattern I should be designing in?

GhengisDhon
01-26-2017, 10:06 PM
Still working on the full document but let me post what I can to help you out.

We use velcro to attach the plates to the Mech (it works surprisingly well). Just need to make sure the velcro strips go the full length of the target plates and and are firmly attached to the Mech.

GhengisDhon
01-26-2017, 10:07 PM
Here's the target plate dimensions (Same as the old ones).

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GhengisDhon
01-26-2017, 10:14 PM
Here's one attachment method assuming you have a good flat spot on your mech.

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GhengisDhon
01-26-2017, 10:17 PM
Here's what I do on my Mech since I don't have a good flat spot (I assume most Mech will fall into this category). Note that the brackets are firmly attached and run the whole length of the target plat.
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jwatte
01-26-2017, 10:21 PM
Thanks!

How thick are the plates? If I'm mounting between the legs, I also have to make sure the legs don't turn enough to hit the plates...

GhengisDhon
01-26-2017, 10:25 PM
We also do have half sized target plates for Bipeds or potentially light class mechs.

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GhengisDhon
01-26-2017, 10:27 PM
Thanks!

How thick are the plates? If I'm mounting between the legs, I also have to make sure the legs don't turn enough to hit the plates...

Included in first pic... approximately 0.5 in thick.

Thalvus
01-27-2017, 02:53 PM
We also do have half sized target plates for Bipeds or potentially light class mechs.

Thank goodness, is there actually going to be a light mech competition class this year, or is that just an idea?

I'm assuming that you can mount the smaller target panel sideways as well.

GhengisDhon
01-27-2017, 09:16 PM
Thank goodness, is there actually going to be a light mech competition class this year, or is that just an idea?


No separate light Mech class this year.. Not sure anyone has a fully functional light Mech currently, but if someone does come up with one between now and Robogames we'll come up with some rules to let them compete.

Thalvus
01-29-2017, 08:54 PM
Thanks for clarifying! I'd enjoy seeing a hypothetical draft of a light class ruleset in the near future if possible, if not no problem.

As for the target plates are they going to be provided at the event or are we going to have to buy/make them ourselves?

Thalvus
01-30-2017, 07:59 PM
What is the amount of force required to register a hit, I'm going to try and construct an autocannon-ish gun to mount on my light mech, hopefully what I can scrap together will be enough:D

GhengisDhon
01-30-2017, 08:09 PM
The target plates are actually quite sensitive to BB hits (see here http://forums.trossenrobotics.com/showthread.php?8079-Piezo-Target-Plate-Testing-Results.), often registering hits down to 10 ft/s using 0.2g BBs. They are a lot less sensitive to being pushed, such as bumping into a wall. We'll set a minimum value (such as 35 ft/s) that all plates will be guaranteed to trigger.

Thalvus
01-31-2017, 09:40 AM
Thanks for the info and the link, both are very interesting.

I read in the first post on that link that the target plates are being provided by RTeam, I'm assuming (a word that I use way to much, but I need to be sure) that the half-size plates are also going to be provided at competitions like Robogames.

giantflaw
01-31-2017, 10:58 AM
Yes, half size plates will also be provided. Also a technical data package will be put on-line so you can build your own. A parts list, schematic, PWB board files, laser cutter files, assembly instructions. As long as you build yours the same way and mount them on your robot as prescribed, the certified target plates will plug in place of yours. You will also need a transponder card and xbee radio if you don't have one and an LED board. A new R-TEAM variant transponder card is being made as we speak but the legacy transponders will work to. The R-TEAM variant LED board is much smaller than the legacy board so it is easier to mount. It has been available for several years now online.

GhengisDhon
01-31-2017, 09:54 PM
Target plate Descriptions and files have been added here:

https://github.com/ghengisdhon/rbots/tree/master/Target%20Plates%202017

Thalvus
02-11-2017, 08:39 AM
So I have all the files from the github to make my own target panels, problem is that I have no clue what to do with them, is there going to be a tutorial of something like there was with the old far plates?

GhengisDhon
02-11-2017, 09:54 AM
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http://rteamrobotics.weebly.com/


So I have all the files from the github to make my own target panels, problem is that I have no clue what to do with them, is there going to be a tutorial of something like there was with the old far plates?

There's a tutorial (Mech Target System rev-.ppt (https://github.com/bloftin/rbots/blob/master/Target%20Plate/Mech%20Target%20System%20rev-.ppt))for the 2016 Targert plates here:
https://github.com/bloftin/rbots/tree/master/Target%20Plate
Don't use it as-is since we've changed them for 2017 but you can use it as a guideline to see what you need to do to assemble.

On pg. 6, "Target Plate Attachment Options", I wouldn't recommend any of these. We found a better way. Scuff up the back side of the plate with sandpaper where you want to attach the rubber hose and glue them together with Shoe Goo.

In the files you downloaded for the 2017 Target Plates, the "dwg" files are CAD files showing the outline of the target plates themselves. We use these to laser cut the target plates out of 0.06" Delrin (acetal). You should be able to pull them into any CAD program, if needed. If you don't have a CAD program, I can also dump them to github as a pdf so you can view/print them as a template. You can also cut the target plates by hand out of thin aluminum. Takes a bit of work but works well.

One of the main differences between the 2017 and 2016 target plates is the target filter card. It now mounts directly to the back of the front target and has 3 LEDs that flash when hit. The EagleCAD files for it are in the "Target Plate Filter Card" folder. If you have soldering skills, you can use the .brd to order circuit cards from OSH Park. The Bill of Materials (BOM) has the components you can order from digikey. If you don't have soldering skills, well... you can try Macrofab and see if the Eagle CAD files are compatible and have them make it for you (for more $$). Our intent is to make a version for macrofab but haven;t got to it yet.

For the transponder board, any version of the board from previous years will work. The EagleCAD files for it are here:
https://github.com/bloftin/rbots/tree/master/Transponder
We also have re-spun the board (Macrofab compatible) with larger voltage regulator to handle higher power XBees as well as keyed the connectors. Its in "testing" and artans should be releasing the EagleCad files soon.

Hope this helps.

jwatte
03-27-2017, 05:14 PM
Is it just me, or does it seem like two slides from the first page actually say different things about which Velcro polarity goes where?

This one says "loop": http://forums.trossenrobotics.com/attachment.php?attachmentid=6842&d=1485490252
This one says "hook": http://forums.trossenrobotics.com/attachment.php?attachmentid=6843&d=1485490449

GhengisDhon
03-27-2017, 09:32 PM
Is it just me, or does it seem like two slides from the first page actually say different things about which Velcro polarity goes where?

It appears that way.. doesn't it? That's my bad.

The "Hook" side goes on the target plate. The"Loop" side goes on the mech itself.

One good think about velcro... its easy to change if you get it wrong.