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96khz+CE could be as powerful as pure 48khz and consumes less current. In RC1, 96khz+CE was my best option. But 48khz+CE is still favored afterwards. And 4” still love 24khz+CE. ESC FF/brake is another topic. |
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Last edited by JazzMac; Jun 24, 2020 at 10:56 PM.
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And do you recommend Double CE for everything? |
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Last edited by JazzMac; Jun 25, 2020 at 11:44 AM.
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BLHeli_M 16.9 RC4
BLHeli_M(BLM)
Rev16.9 RC4 a. Add ASYNC-PWM mode b. Sample RPM in each step when RPM is low While planning next feature and waiting for more test resules, I have some time. A. Set PPM max throttle to 1512 to enable ASYNC-PWM. Works the same as 16.73. ASYNC-PWM can be active by setting PPM max throttle to 1512. In ASYNC-PWM, there is no CE nor ESC FF. B. When RPM is low, instead of just waiting for crossover signal, RPM data will be sampled in every commutation step. For magnetic pole pairs=7, RPM sample rate will be 42 times. BLM Thread BLM Github |
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Last edited by JazzMac; Jun 26, 2020 at 12:34 PM.
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Yes. We need configurator upgrade. I don't have this in my list. I never learn Java. Will still focus on commutation features. Actually version name also has restriction by Blhelisuit. Next will be 16.91 but not 17.0.
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Should 16.9RC3 or 16.9RC4 improve efficiency? Which is best for 5" 270g AUW ultralight? Using 16.73 24Khz and motors get warm just slow hovering. I see vibration in FPV. Both 5040*3 and 5030*2 props. Cruising 50kph motors are cool. Zipping fast, 60% punches, motors barely warm. Strange. I dont have BB on this thing, but suspect motors are way overcorrecting. PID is something like P25 I20 D20, so its not high P or high D ... |
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Stumbling in with a non quad related question: IS BLM still capable of using PWM input signal from the FC? Background: I'm going to mod one of my good old Walkera MiniCPs to 2S, but want to benefit from 48KHz. I also thought since it is possible to disable DampingLight (if I understood correctly) that a 2in1 Blheli_S ESC (I already have one laying around)could do the job quite well
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1. DCE try to put more energy at the optimal commutation timing. And helps the settling time.
2. CE shows better power saving in this hovering test. I think DCE has the same result. 3. For a normal flight, DCE can have more agility but with very few advantage in power saving. Quote:
PPM min throttle= 1148 = ESC FF off PPM max throttle=1832 = Double CE Then for ESC FF on: PPM min throttle= 1144 is suggested (FF = 3, Brake= double 2) |
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Thanks a lot for this test. BLM is free and simply try to bring more fun for quads.
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