Sim- (Simon Kirby) SimonK's tgy. AfroESC. Timecop's blog - rcgroups.com. I got my package a couple days ago but didn't have time to screw around with it until today.
There has been a bit of misinformation and "covering up" made by DJI and their dealers, so I figured I'll post some non-bs info. First things, nice packaging. Without the PMU (Proprietary Power Management Unit) the entire setup draws a hefty 650-700mA. This definitely explains why some people have been having heating BEC issues. Cheap 7805's inside a typical HK esc dropping 12-16V down to 5V would generate a ton of heat at 700mA. The GPS does have a battery backup, and appears to be using ublox neo GPS module with label removed, according to the comments in this post.
The "proprietary DJI bus" is actually CAN-bus. I'm gonna make a cheap ESC that works good enough for ME. Discussion I'm gonna make a cheap ESC that works good enough for ME I started this thread in January and I thought people would care.
Apparently, they don't. Well, at this point neither do I. I just want stuff that works, and tearing up Chinese ESC to try out fail firmware written in assembly is not high on my list of things to do when I just want to fly garbage. I tried to get some help from people but as most of you probably know, RC hobby is all talk and trolling and then there's one-two smart guys who won't share anything with you. Originally I wanted to make something that would fit into MK-distroboard. 42x24x4mm. I found a Chinese company who made separate power stage PCBs. The current logic board (above) will solder on the back side of the power stage (below).
And you got some fets on the back side, Turnigy plush style: Yes, I didn't bother using gate drivers, but neither does any other $10 chinaESC, and they work just fine. Oops. And this is all temporary fun until OP-ESC gets done. Ultimate Crappy ESC of Doom. Careful!
Ultimate Crappy ESC of Doom Status: [DONE] Cutting apart Turnigy Plush and resoldering stuff is stupid. Let's make something that doesn't suck. Apparently nobody cares about having a cheap ESC, so this is my own for-fun project. This project is back on track because I got tired of wanking around. Project thread: This will be a two-designs project.
Current status of design 1: Code: 1. Design 2 (now called ESC32) is using a real MCU (STM32) which doesn't suck, and might even use gate drivers if I find them cheap enough gate drivers, and all-N-fet design. 2S..5S input, should be good to over 40A if made on proper PCB. Current status of ESC32: 1. Bring on the trolling, Atmel bigots. AVR443 Sensor-based Control of Three PhaseBrushless DC Motor. AVR444 Sensorless control of 3-phasebrushless DC motors. Schrittmotor-und-BLDC-Motoren-Animation - Nanotec.