Cicatrix Build Diary

[RogueTwoRobots]

Re: Cicatrix Build Diary

I've got the photos, but I need to do a little editing to them just to make it clear what bits are what. But I'm loaded with a cold/virus at the moment (my body's way of telling me that I can no longer go out on consecutive weekends, drink lots, go to bed late, and expect to get away with it!) so some point before the weekend, hopefully tomorrow, I'll get them up.

If it's any consolation, it should hopefully still be a doddle

[RogueTwoRobots]

Re: Cicatrix Build Diary

Okay, photo time!

Firstly, if you still had the trainer port board, the connection going in would look like this:

[attachment=2:3i026rkb]DSCN6229.JPG[/attachment:3i026rkb]

Connections are:

• +ve = red
  -ve = brown
  PPM = yellow

Can't exactly remember what orange is but it isn't needed for the conversion.

I'm not sure what's gone on inside your transmitter when the trainer port's been modded, but these wires then go to the circuit board running vertically between the two sticks of the transmitter:

[attachment=1:3i026rkb]DSCN6231.JPG[/attachment:3i026rkb]

And a close-up:

[attachment=0:3i026rkb]DSCN6230.JPG[/attachment:3i026rkb]

I couldn't get in behind the board to double-check, but the red and yellow wire positions are clear enough, and I'm pretty sure the brown wire connects to the bottom-most solder pad in that picture. If the wires have just been cut as part of the trainer modification and there is enough length left on them, then it should just be easy enough to solder your wires to it. If they've been un-soldered from the circuit board then it'll be a bit more fiddly to try and get them attached.

If your transmitter doesn't have any of those connections, then I'm not too sure where the next connections points would be. Technically, positive and negative can probably be taken off any part of the transmitter power lines, such as where the battery connections are soldered on, but the PPM line is the important one so it's knowing where that goes after it connects to the circuit board.

[Anttazz]

Re: Cicatrix Build Diary

Ahh ok, I still have those wires attached to the transmitter and know where you mean. Looks like it might be easier if I hacked off the connection to those 4 wires that used to lead to the trainer port and solder them to the wires coming from the FrSky, rather than going directly onto the board? If that should work then i'll give it a try tomorrow.

Cheers for that Jamie

[RogueTwoRobots]

Re: Cicatrix Build Diary

I didn't word part of my post very well but yeah that's what I mean; if the wires are still there, then just solder direct to them. Saves you having to mess about with intricate soldering at the circuit board end

[Anttazz]

Re: Cicatrix Build Diary



Drumroll destroying an old pc monitor. We were working on Eric too though, honest...

[RogueTwoRobots]

Re: Cicatrix Build Diary

Not that you can tell much, but there was a little breeze blowing at the time
Need to get the drive sorted though, even if it was a slippery surface (and on a slope)

[PJ-27]

Re: Cicatrix Build Diary

Hence the kicking?

The teeth look like they bite nicely though.

[RogueTwoRobots]

Re: Cicatrix Build Diary

Yup, much kicking required to get it to move. Having said that, the wheels need replacing, they're pretty goosed.
The teeth bite nicely, but the drum's still a bit too slow for my liking. And far too unbalanced.
Gonna bite the bullet and invest in a decent brushless setup for it though; can't have it under-performing at the next champs - it's got a reputation to uphold!

[Anttazz]

Re: Cicatrix Build Diary

The steepness of the hill actually doesn't come across too well, but for people watching, I have tried running Eric Jr on that carpark and it has no chance, just gets stuck constantly, it was also the only 5 minutes of the day where it wasn't raining heavily. We had also been testing on a garage floor coated with hydraulic oil .

Don't worry Jamie, the next UK champs will still have to walls for you to smash it into until its broken, your rep will be fine

[Ellis]

Re: Cicatrix Build Diary



For an unknown reason I can't view the video. Any chance it could be uploaded to YouTube?

[Anttazz]

Re: Cicatrix Build Diary

Not working for me atm either, will probably start working soon.

[Ellis]

Re: Cicatrix Build Diary

Working now, and my God, when you said breeze you weren't freakin' kidding! Surprised Drumroll didn't float away...

Looking very cool, loving the bright colours and of course, the destruction. :twisted:

[PJ-27]

Re: Cicatrix Build Diary

Not another brushless spinner! What sort of RPM are you getting on the drum at the moment?

[RogueTwoRobots]

Re: Cicatrix Build Diary

Not enough RPM! For some reason, running a Speed 900 in Drumroll II hasn't impressed me as much as the original one. I think a large part of that is due to the drum being significantly lighter than the old one, as nothing else has changed. It uses the same batteries and same gearing as previously but just doesn't seem as impressive. In order to keep up the destruction with less weight, the RPM needs to increase and the best way to do that is to go brushless, so I'll be looking into that soon.

Sorry Tony, I seem to have hi-jacked your thread with my updates :P

[PJ-27]

Re: Cicatrix Build Diary

haha, just a tad!

So where has the extra weight gone then? Surely you want as much weight in the drum as possible? Slightly concerned as the whole rotating structure of Bitza 2 is likely to only weigh 2kg.