MultiWii

Hi! @EOSBandi Yes, it's tested with the newest version (all nFETs) of the HobbyKing 20A BlueSeries . @ziss_dm I just tried v0.5 and 0.6 on 4S: v0.5: very good startup, some resets during fast throttle changes, but way better than v0.4. v0.6: startup not as good as on v0.6 (throttle needs to be set o...

Hi ziss_dm, for a very smooth startup I need 16 nops on a 3S and arround 32 nops on a 4S. To set more than 7 nops I had to "adjust" the "brcc wait_for_low" command: brcs continue_wait_for_low rjmp wait_for_low continue_wait_for_low: ret There is one problem left: On 4S and fast t...

Hi, what do you mean by hardware, ESC and motor? It's a 20A HobbyKing BlueSeries with all n-Fets and removed caps in BEMF feedback. The Motor is a T-Motor MT3506 650KV . I think someting is diffrent with this motor, because your software is working great with my other motors (RCTimer A2830-14 750KV)...

Hi ziss_dm, some new test results with v0.4 . 8V PSU: The motor starts spinning smoothly at arround 1,12ms (min = 1,00ms / max = 2,00ms). But I need to set throttle to 1,20ms to get the motor into running mode. So, if I set throttle immediately to 1,20ms or above it always switches from starting int...

Hi ziss_dm, I just tried your latest software. It seems that the motor is not switching from startup mode into running mode. The motor starts spinning very smoothly, but when it should switch into "running mode" the ESC resets. If needed, I can make a video. I don't think it's a FET issue,...

Hi Stalk, ... For 12A I use the hex file from this site? ... do you mean the armokopter.at site? I have posted the link just for the picture. Their software uses a diffrent protocol (UART instead of PWM). If you have only on type of FET's, you must compile the ziss_dm package with the files I posted...

Hi Stalk,

the 12A looks like the new ones with only n-Channel FET's. You can find some infos here.

For the 20A version I couldn't find a picture, but it should be the 3 caps in the lower right corner.

Cheers,
Heiko.

Hm, 3 days ago everything worked, but now i have a startup problem . I checked the modified ESC with a power supply, then with a 8 cell NiCd battery: No probelm at all. Yesterday I tried a bigger prop (13x4.5) on a 4S lipo. This resulted in 2 burned FET's while the motor tried to start. Today I refl...

Hi,

today i recieved the new HobbyKing Blue Series 20A ESC's. As expected, they have n-Channel FET's only.

Here are 2 modificated files for the ziss_dm package (bldc.zip). I changed the p-FET definitions as described by Geert.

Cheers,
Heiko

Hi, ... Two weeks ago I reprogram my ESC (Mystery 12A blue series) with firmware from this topic. Quadro is now stable like never before. Thanks a lot for this soft But I have big problem. About 50% of crashes (three times) were ending with burned transistor (AO4409). The strange is that that always...

Yesterday I received my Mystery20A from Hobbyking and I was also able to read the flash/eeprom back. It was completely unlocked Next I will test the original software for it's properties. If it works fine, it could be converted for other BLCs with disappointing properties. There is also a governor ...

ziss_dm wrote:Hi Heiko,

Was it completelly stopped for long time?

regards,
ziss_dm

Hi ziss_dm,

I'm not 100% sure, but i think it was stopped for at least 5 - 10 seconds.

Cheers,
Heiko

Hi Heiko, I think, there are big difference between fast transitions and attempt to start at high power: During fast transitions the motor start responding almost instantly and there are no big power difference between commutations. During startup it starts at low power and runs about second and th...

Hi, it worked great, but now it's burned I made some fast throttle changes while the motor was running, no problems. Then while motor was not running, I've set throttle to 100% very fast. The motor made it's normal start sound, but just for a very short time and it did not start to spin. Then I hea...

Hi, it worked great, but now it's burned I made some fast throttle changes while the motor was running, no problems. Then while motor was not running, I've set throttle to 100% very fast. The motor made it's normal start sound, but just for a very short time and it did not start to spin. Then I hear...

Thx ziss_dm,

it's working great now with 3s and 4s (the caps are still not removed) on the test bench. You guessed right, I've copied the pwm_arduino_250.inc and used it as template

Cheers,
Heiko

Hi ziss_dm, i compiled the files with the following modifications: .equ POWER_RANGE = 250 .equ MIN_RC_PULS = 1000 ; falling->rising intervals .equ MAX_INT_FR = 2600 ; PWM + 100 = 2500 + 100 .equ MIN_INT_FR = 400 ; PWM - MAX_RC_PULS - 100 = 2500 - 2000 - 100 ; rising->falling intervals .equ MAX_INT_R...

Hi gompf-2 Quax, .... I just point you to this because they also remove 3 caps in the commutation circuite. .... Are they reffering to the to the LPF's in Back-EMF signal conditioner? Are we sure, that they should be removed? regards, ziss_dm Hi ziss_dm, i have a Mystery 30A and would like to test ...