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Dyson v7 Trigger cordless vacuum - TEARDOWN of battery pack
Steve1M:
Followed your guide.
Silicon goop on pcb actually peeled away cleanly, using wooden toothpick to get under it, once I had cut around the perimeter really carefully using a fine-tipped scalpel blade, to avoiding shorting anything.
Residual silicon in the plated through holes popped through on insertion of pins.
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Found magnetic switch only activates when placed at one end or the other. If too central it will not activate.
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I confirm that all connected fine for my V8 SV10 pack using same pin designations as your V7 photo as follows (white arrow on Pickit being pin 1):-
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N7>1 Vpp
N3>5 CLK
N4>4 DAT
N8>2 Vdd
N9>3 Vss
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I just disabled Program Memory, took a read, then just changed EEprom position 1E to 00, as per dvd4me's guide....now activated with blue LED when hit switch!!!
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If brave enough, in future, will test your full modded firmware on a spare tired pack, and see how it behaves, considering difference in number of LEDs between V7 and V8.
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Many thanks again to yourself, and Mr "dvd4me" for your boundless generosity.
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Steve
dvd4me:
--- Quote from: Steve1M on January 23, 2023, 11:49:54 am ---Many thanks again to yourself, and Mr "dvd4me" for your boundless generosity.
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Steve
--- End quote ---
Yeah, dvd4me here is happy you managed to turn back on your "blue lights". Thanks to tinfever, to kindly support you over the path of "empirical" way of altering the eeprom.
Even though he tried to lure you to the "dark side" ;D you resisted >:D
Remember, once you go there there is no turning back. ;)
BTW, did you checked my other li-ion deep discharge recovery videos? It works for power tools battery or laptop ones too.
Or the PS3 de-lid and restore from RLOD, by applying direct pressure on the silicon die.
Cheers
Steve1M:
I'll take a look at your other vids, thanks.
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With regards to balancing the pack periodically, everything is so snug in the case, that I don't even have room to add wiring and JST-XH connector.
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I have therefore ordered 7 x single pin male 8mm pogo magnetic connectors.
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Will bridge pin to outer, (maybe this will marginally increasing contact integrity when attached), drill 9mm holes in sides of pack shell, and use these to tap off the cells to do a proper balance charge on one of my RC chargers periodically, plugging holes with 9mm blanking/blind grommets when not in use.
(Note...I have plated steel strip. This will probably provide good contact for their non-magnetic pure nickel strip also, as 20700 have steel case, and magnets are strong)
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This will save the frustration of repeatedly struggling with those battery shell tabs, yet again, which is always a cumbersome exercise.
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I realise that all the above sounds a bit obsessive, but I have always had the maybe over-optomistic view that, if you look after/maintain things properly, they will last forever.
(Have Black Decker dustbuster, 30 yrs old still going!!! Just keep the motor bearing lightly oiled, and added Lifepo4 cells many years ago....similar story leccy drills/screwdrivers etc...latter 30yr old BD9019 with lovely metal planetary gearbox..tiny dab molybdenum grease now and again, nicad replaced with 26650 salvaged Life cell years ago, all still good)
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Gone off-topic I'm afraid..apologies.
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Rgds, Steve
tinfever:
--- Quote from: Steve1M on January 24, 2023, 12:49:23 pm ---I have therefore ordered 7 x single pin male 8mm pogo magnetic connectors.
--- End quote ---
If you wanted to be really slick, you could install a multi-pin magnetic connector like this (or equivalent) : https://www.adafruit.com/product/5468
I've never used these though. I might be a little worried about shorting the connections accidentally, but you could probably add some series resistors and a cover and be safe enough.
SilverSolder:
--- Quote from: tinfever on January 25, 2023, 02:46:39 am ---
--- Quote from: Steve1M on January 24, 2023, 12:49:23 pm ---I have therefore ordered 7 x single pin male 8mm pogo magnetic connectors.
--- End quote ---
If you wanted to be really slick, you could install a multi-pin magnetic connector like this (or equivalent) : https://www.adafruit.com/product/5468
I've never used these though. I might be a little worried about shorting the connections accidentally, but you could probably add some series resistors and a cover and be safe enough.
--- End quote ---
That's a pretty schmick connector...
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