Team Pasty Build Diary: Loki

[Merkabah_PT]

Re: Team Pasty Build Diary: Loki

Try to remove the mixer, if the problem dissapers, blame the cheap mixer.

The easiest way to add a power on led is by connecting it to one of the channels on the RX, but you will need to use a resistor too. Use this calculator to find what resistor you need. http://www.hebeiltd.com.cn/?p=zz.led...tor.calculator

Are you using the two red wires from the ESC's? If you are, remove one from the RX connector and use thermal tubing or electric tape to keep it from causing short-circuits.

BTW, way waste alu making armor to a mockup?

[ChrisKazoo]

Re: Team Pasty Build Diary: Loki

Removed the mixer and yea seems to have irradicated the problems I was having, ordered a GWS mixer now.

Good idea for the LED, I have a 12 V LED so thinking the resistor won't be necessary?


Yes I was using both the red wires from the ESCs so have removed one of them.

Couple reasons why I wanted to make armour for the mock up, 1) cos I have some spare ally, 2) it'll help visualise the real armour and how it will all fit together etc, and 3) cos I thought it would look cool

Also I'm considering entering it into the arena at Portsmouth to get experience driving it in the context of a battle. Even if the MDF doesn't survive

Thanks for the help

Try to remove the mixer, if the problem dissapers, blame the cheap mixer.

The easiest way to add a power on led is by connecting it to one of the channels on the RX, but you will need to use a resistor too. Use this calculator to find what resistor you need. http://www.hebeiltd.com.cn/?p=zz.led...tor.calculator

Are you using the two red wires from the ESC's? If you are, remove one from the RX connector and use thermal tubing or electric tape to keep it from causing short-circuits.

BTW, way waste alu making armor to a mockup?

[Merkabah_PT]

Re: Team Pasty Build Diary: Loki

I am sure you can find some one to make a couple of whiteboard fights, against a wedge/rammer or some one with the weapon turned of.

The RX only outputs 5v, so a 12v led will not glow very brightly. Get a couple of regular high brightness 5v leds, or power your 12v one from the main baterry. The resistor you will need will depend on how many volts your battery outputs.

[ChrisKazoo]

Re: Team Pasty Build Diary: Loki

Weekend update:

New GWS V-tail mixer came and works brilliantly so mixing is sorted

Cut a piece of aluminium for the top

Added an power on LED, 5V powered from the receiver (thanks for the advice Hugo!)

And that's pretty much it

Here's some pictures:



And a video
http://youtu.be/gUAMYU9jPw8

It's a bit slidey cos the floor's still covered in bits of ally, and the motors still need lowering a bit to increase the ground clearance (keeps getting beached on the door mat!)

Looking forward to Portsmouth!

[PJ-27]

Re: Team Pasty Build Diary: Loki

Those are some very neat straight cuts on the Ali you've got there, what did you use?

I'd be careful putting the LED on the Rx, you don't want to take power away from it since it's your only form of communication with the robot.

Most people put their LED in parallel with the main power block of the robot. Also different colour LEDs have set voltages, a 12v LED is just one with a resistor already built in.

[ChrisKazoo]

Re: Team Pasty Build Diary: Loki

Ha thanks, I think the photos do it more justice that it deserves. I used a jigsaw so they're not perfectly straight but I guess I didn't do a bad job lol

I'll see how things go in Portsmouth with the LED and make changes if necessary. Thanks for the heads up

[ChrisKazoo]

Re: Team Pasty Build Diary: Loki

Haven't finished stage 1 of my robot yet but have already been designing stage 2: the four bar lifter!





The final version won't be as wide and made of something a bit stronger than cardboard, pencils and sticky tape!

[Merkabah_PT]

Re: Team Pasty Build Diary: Loki

Are you gonna build the lifter on top of the robot or inside?
You have more that enough space inside of it. Try to make the robot as small as possible.

[RogueTwoRobots]

Re: Team Pasty Build Diary: Loki

Normally I would agree, but I have to say it looks pretty cool sitting on top like that. Gives it a weird sort of forklift/telehandler look, quite industrial feeling. Should be good to see it progress

[ChrisKazoo]

Re: Team Pasty Build Diary: Loki

Yea it will be inside, once my dissertation and exams are out the way I'll get it all sorted. First stage is to get something that moves and can enter the arena, and I'm almost there!

[ChrisKazoo]

Re: Team Pasty Build Diary: Loki

Normally I would agree, but I have to say it looks pretty cool sitting on top like that. Gives it a weird sort of forklift/telehandler look, quite industrial feeling. Should be good to see it progress

Thanks Jamie

[james...venom]

Re: Team Pasty Build Diary: Loki

Really nice machine, look forward to seeing it running.

[ChrisKazoo]

Re: Team Pasty Build Diary: Loki

Well I had my first experience as a roboteer in Portsmouth over the weekend. I made it to all 6 featherweight fights, and Loki was still running at the end so am pleased with that. The MDF stood up to the other robots more than I thought it would.

First fight: flipped over and then flipped out by Heatwave (I think!?)

Second: Lasted longer than last time but managed to drive in under the arena flipper running away from Explosion.

Third fight: Thrown across the arena by Explosion and it died. Got it back to the bench and opened it up and turned out my batteries were missing! Them falling out also pulled one of the wires off of the link so had to solder it back on frantically.

Fourth fight: Didn't replace the back panel and after entering the arena and doing a spin the wire came of of the link again and it died. Then Explosion got a couple flips on me and ripped me apart. Very frantically put it back together, soldered the link better and ran out to Homebase to get some new cable ties to keep the battery in place

Fifth fight: The best of the event, had a few pushes with Small Cheese and Full English but was then flipped over by someone, then pushed onto the arena flipper and then finally pitted but was still running at the end of it.

Sixth battle: Drove in okay but then died pretty much straight away. Turned out the link 'socket' melted a bit when we were soldering and the link wouldn't fit in completely and it fell out after a collision. Once the link was put in it worked fine so happy with things

Met some nice people and had a great experience. Next stage will be to finish my dissertation (!) and then make the weapon out of MDF to see how it will fit in etc so looking forward to that.

Here's before Portsmouth:


And after...

[ChrisKazoo]

Well it's been a long time since I've updated this but I have now finished uni so have a lot more time but little money so progress has been slow. My dad has kindly donated some timber so have been able to upgrade and modify the original chassis to incorporate the 4 bar lifter and mount all the gubbins in properly.

Still need to save up for the ally box section for the main arm and the other 2 bars but so far so good! The arms are made of 1" x 1/4" ally flat bar and attached by M8 bolts.

Here's how it currently looks:



Very happy with it so far, unfortunately can't make it to Guildford but it won't be ready in time anyway.

As always I welcome people's feedback and suggestions

[harry hills]

I like it Cool lifter. Can't help thinking that its not going to drive particularly well with the wheels that far front. maybe look into 4wd for the future?