Posts made by Lemur

I saw this original style onewheel years ago, I lost all info and only have this one image left.
This has been in the back of my mind and since I've gone as far I can with my Onewheel projects, this will be my main focus.
I just ordered a 1800 watt brushless motor the same as the one in the little minibike, this motor works well with a vesc.
The other driving force is my 2 year old grandson, who loves Hotwheels.

@lia Looks like a bit of work, but you're on top of it, the magnets look good with the plating intact.

@thihan This is from the Indy speed control llc which has taken over the sales of the SSbms.
"When assembling the wiring, first connect the negative pole of the battery pack, i.e. B-, then connect
the battery sampling line, and finally connect the B+ line to the positive pole of the battery pack. The
charger can only be added after all the connecting wires are installed. The power-off sequence is opposite
to the power-on sequence. You must strictly follow the power-on sequence requirements to avoid damage".
https://static1.squarespace.com/static/612d35faee7c3b7ba3e07b7a/t/689c83a8a1b3fd4db0bd832e/1755087784984/DataSheet+Latest.pdf

@ikaruspint Yes, the 2n7002ps-115 are the correct mosfets.

@cw_o You can try NRF or DigTilt to recalibrate the imu, have the board level when recalibrating.

@cw_o The replacement looks more like a Onewheel Plus controller, check the big capacitors, they should be marked "80 volts'' for a XR , if they are 60 v then it's a Plus controller.
A later 4210 and up Xr controller will have 4 silver 80v caps instead of 2 caps.
Pictures of a Plus contoller and a Xr 4210 controller.

@lia It still blows me away with all the detail and everything is accurate to scale, if i never knew in advance it's half scale , I would swear it's full scale.
Truly beautiful work!

@loaffette Hope you get the the Ubox set up, I had a sutdown problem with my MK8 150 with a shutdown while riding. Apparently, the long press firmware does not have a default auto shutdown while idle, and if you set a shutdown time on the LP firmware, it may shutdown while riding when the shutdown time expires, although it's supposed to reset to no shutdown time after rebooting.
I switched to the short press firmware just to be safe and had zero problems since and running any lights on the MK8 is risky, I removed light on my MK8.

@ikaruspint It should be no problem pairing.

@ikaruspint "Disconnecting a Onewheel BMS (Battery Management System) involves disconnecting specific connectors in a particular order to avoid potential issues. The general procedure is to disconnect the balance connector, followed by the battery's XT60 connector, then the communication wires. It's crucial to wait after disconnecting the balance connector before disconnecting the XT60 to prevent errors. "
As long as the balance connector is disconnected first and battery XT60, next the other connectors can be disconnected in any order.
Remember the for reconnecting it's the opposite, the balance connector is last, also wear latex or rubber gloves as touching the bms circuit board with your bare fingers can trigger the bms to turn on.

Looks like TFL has a purposed minibike that can be triggered to do wheelies, much like a onewheel. I'm thinking of building a Hypercore or Superflux minibike with vesc control. I dugged out a NOS minibike kit I bought 10 years ago and forgot I had it.
https://wheeliefunbike.com/pages/wheelie-fun-bike-v1?fbclid=IwY2xjawL50MBleHRuA2FlbQIxMABicmlkETExckdjNU5DakY2eVd2OW43AR6sblUolG4Vetv-Kp5KtVE1Hb4hgfCJNSIfi7e2TpjnrbBms2-Kn5q1kGL3LA_aem_1pi4EkjQrcZ9gxcVCyfZeQ

@h7per Your original problem may have been a broken wire inside the main harness, these XR harnesses have kinks in the small wires that can break, the other is connecting the xt60 even for a split second may have destroyed the 4209 bms.
Can you get the main harness from the person that sold you the 4209 controller and bms?

@aiden1983 At this point I cannot give you any good advice, just guessing.
Just be aware throwing parts at it may not be cost effective and may cause a massive short that can cause a fire, ask me how I know.
I always plug in the battery outside after a repair.
Maybe look for a working Pint controller circuit board instead. Sorry.

@aiden1983 Do you mean there's still a short between the source and drain with all the mosfets removed?

@aiden1983 Sorry, I got mixed up with another post asking about a Pint bms.
These are the mosfets you need.

@ikaruspint The conformal coating is soft and is easily removed with a toothpick, not use metal tools.
The discolored coating is normal as the conformal coating goes cloudy under heat especially at the Xt60 solder points.
Use a heat station for smd component removal, the solder on most factory circuit boards is non lead and reqiues more heat than leades solder.

@ikaruspint Here are the little mosfets that affect cell balancing.

@ikaruspint Unfortunately , I have only one Pint BMS left that I use for testing, seems like Xr, Pint BMS's are getting scarcer.
If you're in N. America, try Facebook.

@aiden1983 Probe the areas red "x" to red "x" and green "x" to green x with a ohm meter set to 200k and there should be no continuity.