JIVE Pro

[Ty89m]

Ah good news Tom, glad it does indeed fix Derks issue. Should have mine hooked up by end day, will test but am confident all will be well. Now if the the snow would quit flying then I could actually do some

[dl7uae]

Snow? Oops, altitude of 4,820 ft...

[mfremont]

I plan to install a JivePro 80 and JLog 2.6 in my E5 with HV servos (BLS272SV/BLS276SV) and the Bavarian Demon.

Does it make the most sense to just try it on the bench to determine if the JLog and BD will initialize properly with this setup, or should I plan on getting a BEC guard before going any further?

[dl7uae]

Yep, makes sense, especially because the BD is rather voltage sensible at startup.

[F1 Rocket]

The issue with Jive Pro/Kosmik and BD is the BD does not send Throttle signal until it initializes. This is BD's method of preventing flight before inialization. Problem is the Jive Pro/Kosmik does not provide full BEC power until after a throttle signal is seen. 95% of the time everything works. The rest may take a few try's then usually works. But as Tom says, a BEC guard should make it work better.

[Jesse]

I have worked through the instructions, I have a kosmik and after a few tries I have my jlog working on that but on my helijive 120 pro it just won't work. it is communicating to the receiver cause a bottom value comes up. also when I start the motor here and there you can see a glimpse of the temp and rpm change but go right bact to 0 and 32 degrees respectively. anyone have any ideas?I'm using firmare 26-K_J-46.12.bin

[dl7uae]

We could shed some light on the schematics of the KOSMIK but never dissect a JIVE Pro.

The KOSMIK has a 5V buck regulator internally whose output is also used on the option ports for voltage supply of TelMe etc.

A Pro seems not to have this buck, the 3.3V regulator is directly following the BEC output, internally. So a JIVE Pro puts pure BEC voltage out on his option port. Because BEC's current limit is much too high for that, there must be an extra current delimiter or at least a series resistance. Nobody knows what the maximum current whithout significant voltage loss is, especially not under conditions of these power-up problems.

Better to supply JLog from the native BEC output of the Pro. Use JLog's "JIVE port" (old JIVE, therefore unused port here) for that.
Much better to use an Optipower BEC Guard:

[dl7uae]

That up there is much too complicated. I tried to share my thought processes during the investigations with you.
Unfortunately I still have almost daily support cases for JLog &Co. in connection with the above.
Retry: This should (hopefully) explain it easier, a simple drawing:

[mfremont]

Originally Posted by F1 Rocket

The issue with Jive Pro/Kosmik and BD is the BD does not send Throttle signal until it initializes. This is BD's method of preventing flight before inialization. Problem is the Jive Pro/Kosmik does not provide full BEC power until after a throttle signal is seen. 95% of the time everything works. The rest may take a few try's then usually works. But as Tom says, a BEC guard should make it work better.

Thanks for sharing these details.

The "no throttle signal" condition would presumably not be a problem when throttle is connected directly to an external Rx?

I'm currently flying a Futaba system with the BD connected via SBUS and the throttle connected to the standard throttle port on the Rx.

Been too busy to give it a try yet...

[Raptorapture]

Originally Posted by mfremont

Thanks for sharing these details.

The "no throttle signal" condition would presumably not be a problem when throttle is connected directly to an external Rx?

I'm currently flying a Futaba system with the BD connected via SBUS and the throttle connected to the standard throttle port on the Rx.

Been too busy to give it a try yet...

Assuming you mean throttle directly connected from ESC to Receiver, not a problem, that's the way I have mine set up. You need to make sure that the receiver is putting out channel 3, ie throttle on the port you select. There is a default config that may already have that set. To wire the ESC directly I remove the signal pin on the master cable and plug it into the signal slot of an empty servo connector and then insert that into the receiver.