Hobbyking Swamp Dawg build – #1

SwampDawg01

I couldn’t resist the Hobbyking Swap Dawg as an opportunity to play with SimonK ESC firmware with forward / reverse enabled.

ESC selection and implementation

I selected a Hobbyking F-30A ESC, which might seem a bit of overkill but it is a closed air space which reduces its dissipation capacity. The F-30A have proven themselves reliable with SimonK on a range of BLDC motors. Continue reading Hobbyking Swamp Dawg build – #1

SimonK on Hobbyking 40A ESC 4A UBEC 9261000003

ESC02

Following on from BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003 – #3, further tests were conducted on the ‘chugging’ ESC.

The 9261000003 is a relatively low cost ESC with 6S rating and fast FETs.

At Simon’s suggestion, the BEMF caps were removed. This eliminated the chugging effect on both the DT750 and 4822-690KV where it had been previously observed. The 4700pF BEMF caps are in a vertical row at the bottom right of the pic above.

I used to routinely remove BEMF caps (a carry over from using WiiEsc), but found on some tests that it made insignificant difference. That might be the case for some motors and smallish caps (1000pF), but in this case, the combination of these challenging motors and largish BEMF caps were incompatible and removing the caps solved the problem. Continue reading SimonK on Hobbyking 40A ESC 4A UBEC 9261000003

BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003 – #3

ESC02

Following on from BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003… and BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003 – #2

This article documents some comparison tests of:

  • SimonK commit 1f75da384e5c83f83916aa752819ca6eed712565 bs.hex; and
  • BLHeli v11.2 commit baaa4db600b5cd78752c9b4f580fd08d15f1f1f1 for Hobbyking 40A ESC 4A UBEC.

Continue reading BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003 – #3

BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003 – #2

Following on from BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003

I was sent some further info on the bootloader firmware and adapter hardware.

Initial experiments using an adapter that I use for a range of this type of application were unsuccessful. On examining the waveforms with a ‘scope, it was apparent that a lower value of pull-up resistor was required. Continue reading BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003 – #2

BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003

The recent release 11.2 of BLHeli supports some popular Atmel based ESCs.

ESC01

This article is a review of HK_UBEC_40A_MULTI_REV11_2 on that ESC (http://www.hobbyking.com/hobbyking/s…arehouse_.html) at 4S with a Hobbyking 4822-690Kv 22 pole motor and 1045 SF propeller.  This ESC was chosen as it is an inexpensive ESC that rates well in features (fast N FETs, support for bootloader and fully damped mode) in BLHelis documented compatibility list. Continue reading BLHeli on Hobbyking 40A ESC 4A UBEC 9261000003