Team Eventorizon: Build Diary

[Mouldy]

Re: Team Eventorizon: Build Diary

Didn't you have this issue last year during tech check? What channel is your disc on, on your tx? Im pretty sure only the throttle channel failsafes on a dx6i.

Re bind it with the throttle in the down position.

[Eventorizon]

Re: Team Eventorizon: Build Diary

Same problem. Different machine.

The ESC for the disc is on the throttle channel. I will do a rebind with the stick down and see what happens.

Oddly enough the drive motors stopped. I don't think the TZ85A have fail safes in them. Either that or they were bound in the centre with no movement applied.

[Ellis]

Re: Team Eventorizon: Build Diary

The tz85s do failsafe, after about a second.

[Eventorizon]

Re: Team Eventorizon: Build Diary

The tz85s do failsafe, after about a second.

Good enough I think as no one is going to be in the arena 1 second after Cease is called.

Also, how do you slow down something with this much inertia? It takes 2 minutes for the disc to come to a stop from full speed. I don't think driving your machine into the wall is a valid technique unless its in run away. I know some teams use electromagnetic breaking but how do you even build a system like that?

[grant_ploughbot]

Re: Team Eventorizon: Build Diary

Regardless of the ESC's having failsafe's, most 2.4ghz RX's mean that it will never activate.

In failsafe mode certain RX's have programmable failsafing on all channel's, and others only on the throttle (they keep sending some form of signal out the other channels and very rarely just cut the signal completely which is is what makes ESC failsafes work).

Just to clarify, the channels that failsafe are nothing to do with which TX you use. All TX's can failsafe on all channels with the right RX.

[Eventorizon]

Re: Team Eventorizon: Build Diary

Grant, would it be better to change the RX? The one that the DX6i came with didn't failsafe on all channels. Nor does it seem the Orange RX's. What RX's will always failsafe on all channels?

Also, why is the RX loosing signal at just 4m? Would a genuine Spektrum RX with remote receiver have more range?

[plargen]

Re: Team Eventorizon: Build Diary

this is the only orange rx that failsafes on all channels

http://www.ebay.co.uk/itm/OrangeRx-R710 ... 4ac0d74131

[grant_ploughbot]

Re: Team Eventorizon: Build Diary

Yes your best bet would be to swap out the RX for one that failsafe's on all channels. As Dave said you need to make sure that all switches/stick positions are in their failsafe position when you bind as that's how it programs them.

I always recommend genuine spektrum gear for quality and range - but it could be a couple of things if your getting back range. Simplest way is to swap out the RX and see if its OK still. Otherwise it could be a damaged aerial in the TX. It's unlikely to be the armour in your robot blacking it as in 720 its encased in 25mm thick or so aluminium all the way around and works fine (with an Orange RX too).

Its just a case of process eliminating and see where the fault lies, even if it can take abit of time!

[Eventorizon]

Re: Team Eventorizon: Build Diary

I will get on and do some tests tomorrow. I just need to remember to take a batt-bind plug with me

[MikeNCR]

Re: Team Eventorizon: Build Diary

this is the only orange rx that failsafes on all channels

http://www.ebay.co.uk/itm/OrangeRx-R710 ... 4ac0d74131

I've used both the R410 and R610's in robots ranging from 150g to 30lb and they both failsafe on all of the channels I have used. (typically aile/elev/rudd/thro)

[Eventorizon]

Re: Team Eventorizon: Build Diary

Tried out the suggestions with mixed sucsess.

Rebinding solved the failsafe issue but with the armour on I am still getting intermitant signal.

Also, I have no idea is this is even possible but...

When the disc goes over 1/2 throttle I loose steering completely. Its not that I can't drive, the ESC's stop responding but I still have control over the disc speed.

Both systems are powered independently and are not joined at any point besides the receiver. I can't figure out what is going on. If anyone has any ideas?

On a different note, those who use magnets to help keep their machines on the ground, what and how much do you use?

[blazerbotics]

Re: Team Eventorizon: Build Diary

have you suppressed your motors?

[Eventorizon]

Re: Team Eventorizon: Build Diary

I don't know what suppressing is... [Googles] No... they are just standard GR02's. I will look into adding a small capacitor to the drive motors.

Is it possible to shield the receiver from the EM of the brushless motor? They are only about 8cm apart, if that.

[Mouldy]

Re: Team Eventorizon: Build Diary

The proximity of the rx to the brushless setup shouldnt be an issue, 540's rx was about 20mm from the motor and i never had any issues.

Possibly a dodgy tx/rx - you got a spare setup you can try? You done a range check of the drive going without the weapon running? you should get a few hundred meters of range easy with no armour on.

Also what you using as power for the rx? and obviously check all your batteries are charged

[Eventorizon]

Re: Team Eventorizon: Build Diary

Receiver is powered by a 14.8V lipo, which alos drives the GR02's, through a 6V ParkBec.

I will give the batteries a good charge, test that, then change TX as well. I have the one that came with the Spektrum originally but it doesn't failsafe [The problem at Tech-Check last year] and another Orange receiver.

And yeah, I have a few pics of 540 on my phone and just spotted how close it was!