Hi guys, today I was working on the anti-spark switch to use together with momentary push button with push to hold to turn on/off features and in the end created bit overpowered really small anti-spark switch.
Sounds good to me… We need more solutions. Just had a high speed spill today thanks to a failed vedder anti sparkswitch (direct fet version). Feel like xt90 loop switches are the only safe option now.
Was on the end of my route to my university, 5 mile trip, and on the last hill (15% grade), I got jerkiness from the motors. They lost power, regained power, lost power, regained power, that loop a few times, and finally lost it. Thanks to the v4 hummie hubs in 4WD, I can climb 20% grade hills even at over 30 mph. I was full throttling it up hill, made it half way, and this happened. Now the gate is stuck open, so the power switch is useless. It’s now just a hazard, cause it could cause this again, so I just removed it and have everything directly soldered. Till someone comes up with a solution, my board stays on 24/7, lol.
After spending years of developing these motors with hummie, I finally feel they can’t fail anymore and I haven’t had any failures so far in the few hundred miles I’ve done on them so far. My chaka quad vesc is rock solid, a few problems with caps falling off due to vibration (after 1500-2000 miles of use i’ll say), but that’s all in great working condition now.
Just when you think everythings solid, something will fuck up your day. I landed on my 3k laptop, so now I have to deal with that. All because of a stupid power switch.
This is the same reason I don’t like fuses in my circuits. They are another point of possible failure that I’ve personally seen friends eat it at 25+ mph. Simpler is safer…
Something like 40-70€ I guess, will see with parts, I will be ordering some PCBs and parts for the prototype by the end of the week if everything goes well will try to make a batch of them.
U1 is not mcu, u2 is mcu, u3 is high voltage low current linear regulator ~50mA its rated for 3x higher voltages so shouldn’t be a problem. I have already reconsidered ground plane.
The whole switching is based on high end BMS design
ah that is why you have two fets drain to drain. (edit patata potato)
so in this case Q1 is not doing anything, except potentially blocking any regen, it’s not contributing to switching the load. All the current will just go through it’s diode.
I’d like some proven high Amp capable anti-spark switches.
100A cont. is minimum.
160A cont. would be nice too, I know some one else who would buy a few as well
Hi guys, I just updated the design, went from LDO to buck converter the LDO did not provide enough current for simple led. Because of the increase in size, I went double Mosfet’s so it should be around ~200A but still, it’s in theory. The new board size is 30x50mm
100A cont. is minimum.
160A cont. would be nice too, I know some one else who would buy a few as well 
