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Best ESC ??
Hi guys, what are the safest ESC's to buy right now?
I'm ordering some for 2 projects and not sure what to get (my last batch of Turnigy's have the Si labs chip ) Now I'm reading things like the HK SS series are locked.. What's a safe bet (10a and 18A ESC's requred) from either HK or RCTimer?? |
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to the two posts above: how do you manage to find this thread, but at the same time fail to read more than 1 page of it and order garbage.
your usual plush 25s? maybe you don't need this thread after all? the guy asking recommended esc - try reading the thread. hk f10,20,30,40a stuff has been linked like 9000 times.... |
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http://www.irf.com/product-info/data...irs2003pbf.pdf If that's really an IRS2003 FET driver, you can see there is a line above LIN, which immediately excludes most .inc files as possible matches for that board, as that is fairly uncommon. This means that the INIT_P lines would need to have the low side (called "N" in my tree) FETs initialized to HIGH (on) rather low (off), in order turn the FETs off. grep can tell us potential targets for this board: > grep INIT_ *.inc | grep AnFET dlu40a.inc:.equ INIT_PD = (1<<AnFET)+(1<<BnFET)+(1<<CnFET)+(1<<rcp_in) tp_nfet.inc:.equ INIT_PB = (1<<AnFET)+(1<<BnFET)+(1<<CnFET) It might be tp_nfet.inc, but check the pin arrangements. If it is actually resetting, I kind of doubt that the firmware is really that buggy. Does it happen right near full throttle? The FET drivers draw the most power there and that is the most likely point where the whole circuit would draw too much power from the logic voltage regulator. Quote:
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Anyway, you can start the motor at a low speed to make it more obvious, but if you don't, you can still just wait for the start-up beeps again after briefly connecting the reset pin to ground. When they set the RSTDISBL fuse, it just ignores all input on the pin. |
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It appears I misread your initial post and reversed the diagnosis. The confusion is my fault, so to set the record straight... to verify if an esc has "locked firmware", I hook up to limited power (RX pack), briefly ground the reset pin, and either... A) Nothing happens = esc cannot be flashed or B) The esc "reboots" = esc can be flashed Simple enough... obviously a motor needs to be attached to hear the reset beeps. I'll report back if my batch of ss30-hw's are "locked" or not as soon as they arrive. Thanks again, Kev |
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Hi. I have a question. Maybe this was answered before but I don't have time to read all 295 pages .
So I have HobbyWing SkyWalker 20A ESC's and I want to know if I can flash them with SimonK FW and what file must I use. I'm using them on HobbyKing KK V2.1 board. Thank you. |
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Will have a go with the wii-esc code and see what happens. Had a look at the wii-esc site - is it simply a case of downloading the .cmd file and flashing via avrstudio, or are there any other steps to take or fuse values i need to set? I noticed the issues using the MT-3506 motors (with flyfun 30A esc's) on both my Naza and WKM quad builds. If i have the quad sitting in a nice stable hover, then flick the right stick/aileron i can hear one of the motors make a 'cogging sound' (anyone who has built an RC rock crawler will know the sound i mean). The quad will then gently pitch over and crash. If i fly this set-up in a sedate way it's fine, but as soon as any very quick inputs or attitude adjustments are made, there are issues. Tiger motor didn't respond to my questions, found this thread via multirotor forum. |
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i am building a quadcopter from scratch and one of my ESC's burnt out, i replaced it with a new of a different brand as the same was not avail able and now one motor spins faster than the rest is it possible to fix this my retiming my ESC?
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I assume you calibrated all 4 together or using same method at least? Build yourself a tricopter or an Osprey with the others. If you go with the Osprey idea don't fly it near Japan ... you could ruin their reputation for reliability. Though yours would be totally safe I'm sure. |
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Last edited by thwaitm; Jul 05, 2012 at 05:42 AM.
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Thanks. Yes, I found out that the S2003 are controlling the N-Fet ... for each of the 3 chip, one output for to 2 FET (+Vcc), and the other output got the other 2 FET (GND) for the same phase. About the reset issue ... is see there are 3 big 8050 chip for power the external BEC, and it is looking a little 8050 used for internal CPU power. But, this will not explain the reset ... how it is possible that this happen only at full power with fully charged battery ? it does not happen in the middle of the fly even if at full power ? My suspect was always a wrongly detect low voltage cut ... anyhow ... eventually using a bigger capacitor in the power line of the CPU, should prevent this reset, assuming your theory ... Anyhow ...I'm going to get the pin used for control the 3 phase (6 pins I need to find) It will be nice to rescue a abandon ESC, and on the same time , understand more of this interesting world. Tchuss e_lm_70 ps: I will try to download the firmware before mess with it |
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