[EMS Discuss] Red Bull Meeting Saturday

Cord Slatton EMAIL HIDDEN
Fri Apr 12 13:38:03 PDT 2013


I cannot make a 10am saturday meeting, I have to get our ca looked at then,
I will try and make it by afterwards and see if anything is still happening.


On Fri, Apr 12, 2013 at 6:57 AM, Ben Hallert <EMAIL HIDDEN> wrote:

> Regarding target acquisition from the guns, I have two areas of research
> to suggest:
> 1. Wiimote - the Wiimote has a camera that can track up to four 'blobs' in
> hardware and can interface through I2C if I remember correctly; this could
> reduce the CPU requirement, especially if it's determining if the blob is
> centered.  Putting a scope on it might increase range and improve accuracy
> too.
>
> 2. OpenCV is a vision library that may be able to assist as well if we
> want to go with webcams in general.  If we can illuminate the target
> locally with infrared (this would be part of the Wiimote strategy too) it
> could potentially cut down on false positives and help us make sure the gun
> is detecting that it's actually pointed directly at the target.
>
> This is going to be great!  WiFi dongles in the guns, I assume, for
> range?  And an AP on the target for both guns to connect to?
>
> Ben
>
> - Ben
>
>
> On Thu, Apr 11, 2013 at 10:41 PM, Rick Osgood <EMAIL HIDDEN>wrote:
>
>> After our meeting today we decided we should meet again this weekend to
>> hopefully allow other people to get involved who couldn't make it tonight.
>>  We were thinking Saturday morning at 10:00AM at the shop.  Hopefully that
>> will work for some people who couldn't make it tonight.  At the meeting we
>> want to plan out the design in more detail and also start distributing work
>> out to people.  Now a re-cap of what we did tonight:
>>
>> People present tonight: Rick, Kassie, Michelle, Cord, Marie, Taper, Hovis.
>>
>> First we went through all the ideas to whittle them down.  Ultimately, we
>> all came to the conclusion that we liked the "laser target shooting" idea
>> the best, and it seemed like one of the more feasible ideas too.  Plus, it
>> turns out that Kassie was already working on a similar idea for a game and
>> has some circuits already working for her own game that we can use in this
>> project to help the project move faster.
>>
>> Then we did some brainstorming to get some general ideas about how it
>> could be designed and how it could work.  This got us all really excited
>> for this idea so it seems like this is the one we would like to stick with.
>>  Here's a general concept we worked up tonight as something to try:
>>
>> ==========
>>
>> There will be two laser guns.  Each gun will have a RasPi inside with a
>> camera.  The RasPi will do image processing to detect when the player is
>> pointing the gun at the target and pulls the trigger.  It will then
>> transmit hit/miss/etc to the Arduino in the target wall.  They will also
>> have a laser inside so people can see where they are shooting and to add
>> more LIGHT.
>>
>> The target wall will be all lit up and controlled by the Arduino.  The
>> targets will be rotating flat targets.  As a simple example, picture a
>> playing card.  In it's normal state it will be sideways so you can't see
>> either side in order to shoot it.  The target will randomly rotate 90
>> degrees one way or the other to show one of the two faces.  One side is for
>> one player to shoot, one side is for the other player.  When someone hits a
>> target there will be a physical bell that dings.  We liked the idea of
>> having things physically moving because it gives that feel of a classic
>> carnival game and it's more interesting to look at.
>>
>> The wall will be all lit up in LED strips. The color of the LEDs is
>> determined somehow by whoever is in the lead.  So whoever is taking control
>> of the points, takes control over more LEDs on the wall.
>>
>> We want this whole thing built into a bicycle trailer so we can haul it
>> around downtown and let people play it.
>>
>> We also talked about making an overall theme of "cowboy robots" or
>> something similar (geek meets vintage-arcade-shooter).
>>
>> ============
>>
>> We had a bunch of other ideas as icing on this cake but I won't mention
>> them here because they aren't essential to the build.  Kassie has a bunch
>> of free time tomorrow so she's already looking into using image recognition
>> with the RasPi to see if it will even work for us.  If not, we'll have to
>> do target sensing another way.  Taper is going to start looking into the
>> RedBull arduino library to start getting a handle on that.
>>
>> Anyone who wants to be involved in this project, please try and show up
>> Saturday morning so we can nail down the details and assign tasks.  If you
>> can't make it, let us know what level of involvement you can commit too
>> over the next three weeks and let us know what you are most interested in
>> so we can figure out something for you to work on.
>>
>> Rick
>>
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