www.robowars.org

RoboWars Australia Forum Index -> Technical Chat

Starting Lights (christmas tree)
Goto page 1, 2  Next

Post new topic   Reply to topic
  Author    Thread
DavidM



Joined: 07 Jul 2004
Posts: 41
Location: Victoria, Australia, Earth, Milky Way Galaxy


 Reply with quote  
Starting Lights (christmas tree)

Those who were at Robowars 2003 may remember the starting lights or christmas tree we used, I think Battlebots use a real drag racing version.

The lights were cobbled together for the event and it has taken me until now to get around to making a decent version.

The previous version did basically 3 things:
1) timed and displayed 3 minutes on a stepper motor controlled clock face (45 cm diameter).

2) used halogen dichroic lights (red, yellow, yellow, yellow, green) in sequence to start the fight and last five seconds of the fight the sequence was reversed.

3) Beeped when ever a light came on so you got the "pole position" video game kinda starting sound (bip, bip, bip, bip, burrr), and a nasty blahhhhhhh sound at the end of 3 minutes.

The only control the user had was a 'start' which oddly enough started the timing and if it was held down, it would accelerate the timing (used for KO).

Spockie had a couple of suggestions:

A) add a pause button to stop the clock (and probably alternate the first and third yellow lamps), to continue from this paused time press 'start'.

B) add a KO button which if held down will beep and flash the lamps (Green, Yellow, Yellow, Yellow, Red) in sequence for the KO period (actually what is it 20 or 10 seconds?) if the button is depressed for the total KO period (indicating the robot still KO'd) the timer will return to zero and the speaker will blast Blahhhhhhhh indicating KO and end of match, and if the button was released within the KO period the lights will clear and the 3 minute timing will be uneffected.

Another addition is a switch for 5 or 3 minute timing.

And finally the interesting bit, I'm getting some boards made up, at least one for robowars, but I was thinking if Giant Robo in NSW and Andrew in QLD would use it, I'd get two extras made and give them a working circuit boards (soldered PCB, relays, micro etc..) each.

BUT.. you have to add the start/pause/KO push button switches, 5 x 12Volt lamps (or 10 in 2 sets of 5), a speaker horn (or PA connection) and stepper motor for displaying the time. Of course its totally optional what you have and don't have, and I'm willing to alter the software moderately to accomodate individual setups (as its only 3 users).

The output to the lamps is driven from relays, so you could slave higher voltage relays if you wanted mains voltage lamps.

I'm interested in any comments on operation, and particularly from Andrew and Giant Robo.
_________________
"Limitation shows the Master."

Post Wed Aug 04, 2004 2:31 am 
 View user's profile Send private message
Knightrous
Site Admin


Joined: 15 Jun 2004
Posts: 8492
Location: NSW


 Reply with quote  

How much would it cost for the boards and such David? I'm interested for the Metal Mayhem events in QLD as we always go over time and such. If you would be able to give us a list of parts that you have used in your tree like the stepper motor and horns, we might be able to purchase them so the coding and circuits don't have to change.
_________________
Team Knightrous

Post Wed Aug 04, 2004 9:08 pm 
 View user's profile Send private message
Totaly_Recycled
Experienced Roboteer


Joined: 15 Jun 2004
Posts: 1346


 Reply with quote  

Hi David that sounds great im not sure when we will be able to have another event here at the moment but the circute board sounds like a great idea.
Im sure i can hunt up lights and a horn ect .. not sure about a stepper motor i might be able to get one from a washing machine ( just kidding lol ) i had to fix my Fisher and Paykel today it turned out just to be the local mouse plauge causeing the prob apparantly they pee on the motor position sensing board atached to the motor and short them out .. .

It seems that its a commom problem and was quoted $50 for a replacement board .. It just needed washing in hot water and put in the oven at a low temp for a couple of hours and its working fine again ..

Post Wed Aug 04, 2004 10:18 pm 
 View user's profile Send private message
Nexus
Experienced Roboteer


Joined: 17 Jun 2004
Posts: 903


 Reply with quote  

Who ever is interested in stepper motors I have a few that I have been collecting from equipment before i realised that they arent suited for what i want to do.
Have at least half a dozen at different voltages and specs so for the cost of shipping you are welcome to one or more.
If anyone needs one just let us know if there is a particular type and I shall see if I have one to match.
_________________
Bots that do not destroy you, only make you stronger.

Post Wed Aug 04, 2004 10:28 pm 
 View user's profile Send private message
DavidM



Joined: 07 Jul 2004
Posts: 41
Location: Victoria, Australia, Earth, Milky Way Galaxy


 Reply with quote  

The Robowars one has the following kit:

2 x Red halogens (Jaycar SL2741 @ $6.96)
6 x Yellow halogens (Jaycar SL2744 @ $6.95)
2 x Green halogens (Jaycar SL2742 @ $6.95)

Arranged at the top two Red, next two yellow, next two yellow, two yellow and two Green, each set of two is wired in parallel, effectively 5 light circuits.

The halogen lights are dichroic filtered and have integral reflectors, standard two pin connection, so you can use the cheaper holders (SL2735 @ $3.75) or as we used (SL2738 @ $5.99) as these have protective surrounds and are easier to mount to a pole or whatever.

Note1. buy them at the same time and ask for the ten up price which is about $'s cheaper.
Note2. There are blues ones too (SL2744) if that grabs you.

The Speaker is an 8 ohm horn type speaker normally used on Alarms (AS3180 @ $16.95), a connection can be made to a PA or AV setup if required.

The wired controller has three buttons Start/KO/pause, this uses a DIN 5 lead (Plug to Plug, ie like MIDI [say 3m Midi lead would do]), this makes the controller easy to make, get a Zippy box and three push buttons and a DIN 5 Socket and wire it up (directions/pinout will be sent with the PCB) but its basically two pins are connected to the common and the three others the switched lines.

The Stepper motor used is a 1.8 degree, four pole stepper @ 12V (driven by 100A FETs (no don't think about it)). Lower voltages can be used with the addition of a high wattage resistor (dirty but it works as the Stepper gets switched on only during the timing period). 2 pole steppers can rigged up with some frigging about with PNP drivers. Coarser steps can be accomodated with a variable changes in software.

The power supply is a 12V SLA as its portable (used a 7.5Ah for all of Robowars with no worries), a linear or switch mode PSU could be used if you wanted to go to the trouble, but simple is good.

The pcb requires two SPST ON/OFF toggle switches, on for Power and the other for 5/3 minute selection, there's even a revers polarity diode to stop one from killing it like I did to the original at Neighbours.

Of course the software is vapourware at the moment, but all the Robowars 2003 functionality is still real, but its a trivial device so it shouldn't take too long to code the rest.
_________________
"Limitation shows the Master."

Post Wed Aug 04, 2004 11:31 pm 
 View user's profile Send private message
kkeerroo
Experienced Roboteer


Joined: 17 Jun 2004
Posts: 1459
Location: Brisbane


 Reply with quote  

This reminds me of that PLC course I did at TAFE, programing traffic lights and automated sewerage treatment works and what not. (Did you think of using a PLC? Very easy to modify when needed.) So if the Vertex guys need help just ask.
_________________
Get Some!!!

Secretary of the Queensland Robotics Sports Club inc.

Post Sat Aug 07, 2004 11:19 am 
 View user's profile Send private message Send e-mail Yahoo Messenger MSN Messenger
Knightrous
Site Admin


Joined: 15 Jun 2004
Posts: 8492
Location: NSW


 Reply with quote  

IF we have a go at making a set, help would be great guys Cool
_________________
Team Knightrous

Post Sat Aug 07, 2004 8:56 pm 
 View user's profile Send private message
DavidM



Joined: 07 Jul 2004
Posts: 41
Location: Victoria, Australia, Earth, Milky Way Galaxy


 Reply with quote  

I should have been clearer.

The program, PCB and components are offered free, the idea was to offer it to an active QLD and NSW representative that would use it in local comps (ie like Giant Robo), when making one its only slightly harder to make three.

I'd like to see them actually get used, sitting around in someones drawer is not the aim, flashing and beeping in a shed with two robot and people behind a plastic sheet over the door - well thats the aim. Of course if no one is really interested in making a set of lights (one must consider the lights and speaker are not an insignificant cost at around the $150 mark), I will probably hock one to sidetracked for go-carts and the other a portable street-fight version, so it no worries either way.

It is possible to perform most of the functionality with a low end PLC (not too low end - eg like a Pico intelligent relay with 4 inputs and 6 outputs, it needs at least 10 outputs and 6 inputs), the program will be relatively simple using several concurrent loops, however the cost will probably be prohibitive and the sound generation will have to be performed by external sirens etc. Using an Atmel 8MIPS single chip micro is a bit of an over kill, but its cheap, and besides its academic, the PCBs arrive in 3 days along with the DBC (Dave Bot Controller). Exploding MOSFETs here I come.
_________________
"Limitation shows the Master."

Post Tue Aug 10, 2004 1:15 am 
 View user's profile Send private message
Totaly_Recycled
Experienced Roboteer


Joined: 15 Jun 2004
Posts: 1346


 Reply with quote  

Hi Dave i sent you a pm but im not sure it works as all the ones ive sent to people so far havent responded to me so im guesing they arent geting them so if you have an e mail Adress can you please send it to me at

mouse_kil@hotmail.com

thanks Andrew Aidulis (team vertex)

Post Tue Aug 10, 2004 10:55 am 
 View user's profile Send private message
Giant Robo
Experienced Roboteer


Joined: 17 Jun 2004
Posts: 583
Location: Marayong NSW


 Reply with quote  

Hi Dave, sorry I have been very lazy and quiet for a while but I am very interested. I will ask the rest of the NSW guys as we really need to start a money contribution scheme to cover our expences and pay for bits and pieces like this. I`m sure they will all be keen.

Thanks,
Jeff.

Post Wed Aug 11, 2004 3:03 am 
 View user's profile Send private message
andrew



Joined: 16 Jun 2004
Posts: 3110
Location: Castle Hill, Sydney. N.S.W


 Reply with quote  

Look who arises from the ashes. Smile. Yeah for sure. ill put in whatever i can thats feasable for a nice light starter thing like on batlebots. or we can just hang refbot off the wall and use his Very Happy.
_________________
Andrew Welch, Team Unconventional Robotics

Post Wed Aug 11, 2004 6:37 am 
 View user's profile Send private message Send e-mail MSN Messenger
DavidM



Joined: 07 Jul 2004
Posts: 41
Location: Victoria, Australia, Earth, Milky Way Galaxy


 Reply with quote  

Hi Jeff and Andrew, the boards arrive tomorrow, so about 4 weeks or so I have the units posted to you. I'll attach some small light bulbs and a mini speaker so you can test them out.
_________________
"Limitation shows the Master."

Post Wed Aug 11, 2004 10:38 pm 
 View user's profile Send private message
Totaly_Recycled
Experienced Roboteer


Joined: 15 Jun 2004
Posts: 1346


 Reply with quote  
Re lights

Thanks David, let us know when you have them done and I'l send you an adress. im sure we wil be able to set them up and get some use from them even if it's for the remote cars inbetwen robot events lol

Post Fri Aug 13, 2004 9:34 pm 
 View user's profile Send private message
Knightrous
Site Admin


Joined: 15 Jun 2004
Posts: 8492
Location: NSW


 Reply with quote  

I never thought about using them as starting lights for when we eventually start racing the RC cars around the courts! brilliant, now i jsut need to get my car back together and give the big motor a test with the new batteries!
_________________
Team Knightrous

Post Fri Aug 13, 2004 11:13 pm 
 View user's profile Send private message
DavidM



Joined: 07 Jul 2004
Posts: 41
Location: Victoria, Australia, Earth, Milky Way Galaxy


 Reply with quote  

Just so you know it isn't vapourware.

Coming soon to arena near you.

http://robowars.org/forum/album_pic.php?pic_id=193
_________________
"Limitation shows the Master."

Post Sat Aug 28, 2004 9:04 pm 
 View user's profile Send private message
  Display posts from previous:      

Forum Jump:
Jump to:  

Post new topic   Reply to topic
Page 1 of 2

Goto page 1, 2  Next

Forum Rules:
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

 

Last Thread | Next Thread  >
Powered by phpBB: © 2001 phpBB Group
millenniumFalcon Template By Vereor.