ANOTHER PROBLEM !!!!!!!

hi again

I have just bin doing some work on my bot, i was moving the speedos and reciever, and when i tested it it was ok until i switched off and then it went crazy, instead of failsafing.

What to do? Dont know if this would do anything but i have recently put on some steel for armour.

Thanks again

alex

I take it you are using electronize speed controllers?

I have the same problem occasionally with them. The failsafes arent 100% failsafe. They will usually get you through a tech check and into the arena no problem and will work 99 times out of 100 but like I said, they can have problems.

i have another extra failsafe on one of them

No idea if that will help at all as I dont bother with them. If you switch it off and it goes off on one then turn on the Tx again and it will calm down. Then turn it off again. Simple. Not the best solution by a long way but if it works then it works.

How is your ariel mounted? Is your R/X dual or single conversion? Are you running main power cables near your radio gear wires (servo leads)? How close is your r/x to your motors? Improving alot of those factors have helped me keep control over my robots in the past.

Touch wood ive never had a problem with electronize not failsafeing. I would remove the extra failsafe and see what happens then.

ok great

to answer the questions dave, my aerial is mounted with tape on the side, no the radio gear wires near the power cables, the motors are right next to the rx.

thanks

try moving the r/x away from the motors :)

if your robot is standing still, your motors cant produce a interference can they?

if your ariel is taped to your steel body that wont help for start.

failsafes, now this is a good subject. i did send an email to the fra a while back about the problem. The failsafes in speedos like electronize arnt actually failsafes. they cant actually detect interference, all they do is shut off when they dont recive a signal in there pulse band. they dont make a robot safe when they are in there failsafe mode as it cant tell the difference between the txs signal and interference. So if you switch off your tx and the machine recives interference the robot will start to move as it thinks its the transmitter. The guy at electronise also confirmed this.

A proper failsafe would detect the difference between the steady tx signal and the eratic interference signal. thus making it safe to switch your transmitter off.