9.6
Battery looks to be 3 18650 cells or something similarā¦ Iām sure thereās voltage voodo thoā¦
Iām guessing this things toast at this point, Iām only annoyed because I made sure it worked and got my dog excited for it, and then it decided to self terminate before it even got used
Nominal is 3.7V, but charged is 4.2V
x 3
It will be a 12V supply
No, the negative is the side with the cross hatch.
If you want to get an ElectroBOOM momentā¦ Check the voltage across it with a multimeter and youāll see that itās either correct or completely dead. Electrolytic capacitors will work backwards, just not for long.
The original capacitor had a voltage rating of 16V, thatās a maximum. So youāll need a 12V power adapter and Iām starting to think that I know why that capacitor explodedā¦ Letās hope that power supply didnāt take out anything else.
This would still be incredibly helpful, I managed to find some information off an Amazon review but more details would be extremely helpful.
Li-ion? In series? Without a battery management system?
Apparently, some units have a second board, can you post pictures of how everything goes together?
Also, is it ok if I ask the forum AI to move the dog ball launcher posts into their own thread? Itās getting a bit hard to navigate.
Funny, now I know why something I thought was a spark plug didnt look right.
Oh god no! Youāre supposed to smoke the cotton swab, drink the alcohol and then clean the pcb with your heightened state of mind.
Yea Iāll post in better detail,
I have to try to fix my lawnmower today,
Hopefully Iām less of a bafoon with thatā¦ but we are on weekend 2 alreadyā¦ so that ship may have already left the port
Ladies and Gentlemen, prepare for the FLEX.
'Cause not only did this show up in brand new unread condition:
But this was very graciously added to it.
Bruh leave some clout for the rest of us damnā¦
Well I at least managed to fix lawnmower today, that helps me feel better at accomplishing something
Iāll probably sit down and have time to document that board layout if you want @enginerd
That being said, suspecting now that it was overvoltedā¦ what are my chances I didnāt blow the rest of the board in the process? Kinda donāt wanna waste your time if itās a lost cause
I honestly thought for a significant amount of time that said an āaverage forum memberā
I didnāt know how to feel about it lol 
Over 48 hours later, so officially missed day, not bad timing and yetā¦ less than 7 days, so not a missed day and Iām back on track! = One happy but confused LabRat.
So, sorry for the distraction and well done again StarGazer1258!
Hahaah omgā¦ sick burn
Correction,
Mine doesnāt have the secondary board, the board I posted is what you get. All I have dc input, ball sensor switch, motor and battery connection
At this point Iām just going to assume itās blown and beyond my ability to correctā¦ that single capacitor was pretty much the only thru hole component I felt comfortable replacing even if I was an idiot and had to figure out polarity
Honestly, wouldāve been cool with it. 
Sorry that I couldnāt be of any help.
@b42 if you are active on that blog, these are some thoughts for you to pass on if you would like
The poster is struggling for space,
Here is a simple ~8mm he can gain back with the use of a dremel or similar
This is not going to allow him to have it NOT protrude as in the picture, but for some of his internal options, that will be significant
below
This looks like the board is laying directly onto a foil sheet, I would get something to insulate the board from the foil, something like a ferrite sheet, like this
https://www.digikey.com/en/product-highlight/f/fair-rite-products/flexible-ferrite-sheets
Even thin foam or plastic would do, but not as good.
If it were my project, Those are the first tings I would tryā¦or another NFC reader
@b42 It looks like you follow that project as you posted the original and an update here.
Please feel free to post further updates, It would be interesting to me, and probably the community to see how he gets on, It might well interest somebody here to make their own.
FIre any questions back from Terence Eden, or even invite him to join the Forum, where there are far smarter people than me than can help him outā¦
