Bavarian Demon Cortex PRO is here!!
01-20-2017, 03:55 AM
#76
Originally Posted by CraigG 
Can the Cortex Pro be hooked up the same as the regular Cortex (in between the CB200 and servos), if we want to retain the telemetry?
I was going to go this route pending the update that will allow the Cortex Pro to connect through my R3/RSW rx's (as intended). Now I'm concerned that powering up to 6 control servos through just 2 plugs could trigger the overload protection in the CB200. The CB manual cautions against connecting more than one servo per output, which is in effect what this setup does. A power supply disconnect in this circumstance would be catastrophic.
Craig
01-20-2017, 04:56 AM
#77
Originally Posted by CraigG Can the Cortex Pro be hooked up the same as the regular Cortex (in between the CB200 and servos), if we want to retain the telemetry?
I was going to go this route pending the update that will allow the Cortex Pro to connect through my R3/RSW rx's (as intended). Now I'm concerned that powering up to 6 control servos through just 2 plugs could trigger the overload protection in the CB200. The CB manual cautions against connecting more than one servo per output, which is in effect what this setup does. A power supply disconnect in this circumstance would be catastrophic.
Craig
It it CRITICAL that you not connect servos or any device that will draw more than 300ma to any device connected to the CB200s Sat or EXT port as 300ma is the max current rating for those ports. Connecting additional power connections from CB200 servo ports won't help as all are connected in parallel and will see equal current which WILL exceed 300ma...
Last edited by wfield0455; 01-20-2017 at 05:12 AM.
01-20-2017, 06:59 AM
#80
Not sure what you are saying here, all the servos are directly connected to the CB200, each on their own port. While it was suggested to use an REX7 as the primary receiver that was simply to provide a receiver that can have an EX Bus output AND a telemetry input but there will be no servos connected to it, only the Cortex Pro and telemetry from the CB200. The receiver and Cortex Pro should draw very little current.
It it CRITICAL that you not connect servos or any device that will draw more than 300ma to any device connected to the CB200s Sat or EXT port as 300ma is the max current rating for those ports. Connecting additional power connections from CB200 servo ports won't help as all are connected in parallel and will see equal current which WILL exceed 300ma...
It it CRITICAL that you not connect servos or any device that will draw more than 300ma to any device connected to the CB200s Sat or EXT port as 300ma is the max current rating for those ports. Connecting additional power connections from CB200 servo ports won't help as all are connected in parallel and will see equal current which WILL exceed 300ma...
In lieu of purchasing an REX7 as a work around to the way the Demon Pro is supposed to work, I had asked if the Pro could be hooked up to the CB200 via the supplied wiring harness (the same way as the original Demon connects). In this configuration, the control servos are plugged directly into the gyro, which in turn connects to the CB200. The issue is that only 2 of the connections between the Demon and the CB200 are powered (3 wire connection). These 2 plugs power a supply bus in the Demon that powers all 6 outputs, 4 of which are only connected to the CB with the signal wire. Danny had said this was ok to do but I'm not so sure, even more so after your comments.
Craig
01-20-2017, 08:03 AM
#81
Wayne,
In lieu of purchasing an REX7 as a work around to the way the Demon Pro is supposed to work, I had asked if the Pro could be hooked up to the CB200 via the supplied wiring harness (the same way as the original Demon connects). In this configuration, the control servos are plugged directly into the gyro, which in turn connects to the CB200. The issue is that only 2 of the connections between the Demon and the CB200 are powered (3 wire connection). These 2 plugs power a supply bus in the Demon that powers all 6 outputs, 4 of which are only connected to the CB with the signal wire. Danny had said this was ok to do but I'm not so sure, even more so after your comments.
Craig
In lieu of purchasing an REX7 as a work around to the way the Demon Pro is supposed to work, I had asked if the Pro could be hooked up to the CB200 via the supplied wiring harness (the same way as the original Demon connects). In this configuration, the control servos are plugged directly into the gyro, which in turn connects to the CB200. The issue is that only 2 of the connections between the Demon and the CB200 are powered (3 wire connection). These 2 plugs power a supply bus in the Demon that powers all 6 outputs, 4 of which are only connected to the CB with the signal wire. Danny had said this was ok to do but I'm not so sure, even more so after your comments.
Craig
I've done this using a Flex Aura 8 downstream from a CB200, powered by 3, CB200 servo ports and driving 8, high torque digital servos(400+ oz-in each) and it works great.
Last edited by wfield0455; 01-20-2017 at 08:14 AM.
01-20-2017, 08:45 AM
#82
I understand now. If you connected 2 r3s, directly to the CB200 Sat ports and then have the Cortex Pro only connected to servo ports you should be fine. The servo ports have over current protection but I think it takes something like 15A on a single port to trip it and 2 servo ports powering the Cortex Pro driving 6 servos should be fine. Just avoid drawing more than 300 ma from either the Sat or EXT ports and you'll be fine.
I've done this using a Flex Aura 8 downstream from a CB200, powered by 3, CB200 servo ports and driving 8, high torque digital servos(400+ oz-in each) and it works great.
I've done this using a Flex Aura 8 downstream from a CB200, powered by 3, CB200 servo ports and driving 8, high torque digital servos(400+ oz-in each) and it works great.
01-25-2017, 01:03 PM
#83
I just installed a cortex pro in my F100. When I advance the throttle to about one half my rudder servo does a momentary twitch . No were in the throttle transition does it continue to twitch it just jumps once. The ailerons , elevator and nose do not twitch. Any Ideas? Thanks Dan Avilla
01-25-2017, 05:38 PM
#84
I just installed a cortex pro in my F100. When I advance the throttle to about one half my rudder servo does a momentary twitch . No were in the throttle transition does it continue to twitch it just jumps once. The ailerons , elevator and nose do not twitch. Any Ideas? Thanks Dan Avilla
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02-21-2017, 04:03 AM
#89
02-21-2017, 05:13 AM
#90
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You might try u-tube. Installation is fairly straight forward. I have used Cortex in many planes, follow the directions and trim your plane first. Always use a three way switch so you can disable your cortex. I have found it best to turn it off if you have a dead stick, cortex will try to keep your plane flying with out power sometime causing it to stall.
02-21-2017, 06:26 AM
#91
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I have four Cortex in smaller electric planes, but this is the first time I've used a pro, CB200, and in a gas plane since my switch to Jeti. The electrics where a piece of cake. This ones different because It looks as if I need to stabilize the surfaces through the CB200 differently, in lieu of one per one on the Cortex with less servos in my smaller electric planes, because of the eight control surface servos I'll be using. I bought the pro and a few jlogs from Danny several months ago, and as life sometimes gets in the way of our hobbies, I'm finally getting around to building my 110 Yak and was second guessing why I would like to try and install it in something this big. I've seen first hand how it can smooth out smaller planes but am I really going to see a difference with a 123cc motor? If I have to mount it on the pipe tunnel should I epoxy a small piece of ply, side to side to stiffen up the mounting area from vibration? Am I going to loose any telemetry features of my Jeti CB200?
03-01-2017, 11:39 PM
#93
Any word on when we Jeti users can hook up the two R3's to the pro then to CB200/400 and have telemetry?? As it was advertised? I don't want to do any work arounds. I don't want to hook all my servos to the pro.
03-02-2017, 04:23 AM
#94
Telemetry update is in beta test and should be released soon.
03-02-2017, 12:54 PM
#95
. I will looking to place my order now lol. Thank you for the update.
03-06-2017, 09:06 AM
#98
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Before I purchase a R3 REX and have it shipped to a buddy in Mex for me to pick up, I'm putting the Cortex Pro in a gasser and all I really need is RX telemetry. Will I not even get that with the cortex hooked in between the CB200 and R3's?
03-06-2017, 10:04 AM
#99
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You will get Rx data (ie voltage and signal) but nothing from the Central Box. The only "work around" is if one of your RX's is an REX and you jumper it to the Central Box via the ext ports.
03-06-2017, 10:44 AM
#100
Or just plug the RX1 receiver through the Cortex Pro and run the RX2 receiver direct to the CB200, bypassing the gyro.
The system will default to RX1 (with gyro augmentation) and will only switch to RX2 (no gyro) on a loss of signal or failure of RX1. It will revert to RX1 once the signal returns.
Check it out yourself by unplugging/ re-plugging RX1. You will obviously lose gyro augmentation in the unlikely even that you fail RX1.
That's how I have my Ultra Flash set up and it works perfectly for now until the new s/w is released.
Paul
The system will default to RX1 (with gyro augmentation) and will only switch to RX2 (no gyro) on a loss of signal or failure of RX1. It will revert to RX1 once the signal returns.
Check it out yourself by unplugging/ re-plugging RX1. You will obviously lose gyro augmentation in the unlikely even that you fail RX1.
That's how I have my Ultra Flash set up and it works perfectly for now until the new s/w is released.
Paul