ESC boot broblem

Teppo Tepponen

Teppo Tepponen

New Member
Hi!

I´m newbie, noob, boobface on quads and I have this stupid problem, witch might be easy for many.

I have Skywalker-40A ESC:s feeding power trough BEC to Naze Flip 32.

When I power up whole mess ESC:s goes dead. This is cause Naze has signal pins floating where-ever at the time of boot and ESC:s enter on some mode they does not reply. I havent scoped those pins yet. Based on beebs its not config mode. All so ready beebs are absent. I can get everything to work if I feed Naze first with external 5 V and wait for boot-up to complete and then connect main batteries and remove external feed. Is there some clever way to fix this, since this is like stupid "ductape" kind method???

Any help is appreciated!
 
Teppo Tepponen said:
Hi!

I´m newbie, noob, boobface on quads and I have this stupid problem, witch might be easy for many.

I have Skywalker-40A ESC:s feeding power trough BEC to Naze Flip 32.

When I power up whole mess ESC:s goes dead. This is cause Naze has signal pins floating where-ever at the time of boot and ESC:s enter on some mode they does not reply. I havent scoped those pins yet. Based on beebs its not config mode. All so ready beebs are absent. I can get everything to work if I feed Naze first with external 5 V and wait for boot-up to complete and then connect main batteries and remove external feed. Is there some clever way to fix this, since this is like stupid "ductape" kind method???

Any help is appreciated!
Click to expand...
Check battery voltage, also this is a long shot, but do you have a battery load tester?
 
Last edited:
Teppo Tepponen said:
Its not that.
Click to expand...
Sorry I was in a hurry and reading it on the run so I only read to "When I power up whole mess ESC:s goes dead". First questino is are you sure that everything is connected correctly, like PWM for the ESCs is going into the PWM out on the FCB, and that the rx is connected.
 
Yep.

Connection is fairly simple and whole mess even flies. Only startup procedure is lacking smoothness. As ECS has startup time fairly short firing up in a second or two Naze has several seconds. So I presume ESC requires at least 1 ms pwm signal to fire up properly. As 2 ms pwm would lead to config mode. Either modes would be recognizable from beebs. So when Naze is booting I believe there is no signal at all and ESC:s stays mute as from beebs but all so as functionally. ESC:s will start fine if I wake up Naze first externally.

I guess this is common and solved somewhere somehow...

I use this quad for filming so I want all unnecessary tricks to be removed. When in hurry all this kind additional crap is unwanted. For example if I lose this external waking-up-battery - no shooting today...
 
Last edited:
Teppo Tepponen said:
Yep.

Connection is fairly simple and whole mess even flies. Only startup procedure is lacking smoothness. As ECS has startup time fairly short firing up in a second or two Naze has several seconds. So I presume ESC requires at least 1 ms pwm signal to fire up properly. As 2 ms pwm would lead to config mode. Either modes would be recognizable from beebs. So when Naze is booting I believe there is no signal at all and ESC:s stays mute as from beebs but all so as functionally. ESC:s will start fine if I wake up Naze first externally.

I guess this is common and solved somewhere somehow...

I use this quad for filming so I want all unnecessary tricks to be removed. When in hurry all this kind additional crap is unwanted. For example if I lose this external waking-up-battery - no shooting today...
Click to expand...
Many ESCs have startup modes for example helis use slower or super slow startup modes, for quadcopters I suggest the fastest setting. This might be a different problem however.
 
Back
Top