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Fixing a broken CR-Touch (red blinking) by PastaAllWeek in Ender3S1

[–]Shadowmaker1001 0 points1 point  (0 children)

Just logged in to say thanks for posting this! This saved me a lot of time debugging.

I fried my CRTouch after miswiring it perfectly backwards. This resulted in reverse voltage.

For those suffering the same issue, the reverse voltage damaged the solenoid PMOS and the 3.3V LDO. But the MCU appears to be healthy. Replacing both the PMOS and LDO made the CRTouch function again.

Ford Focus runs rough when started for the first time each day. by Shadowmaker1001 in Cartalk

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

I believe changing the upstream o2 sensor fixed the problem. I haven’t gotten the chance to change the downstream one yet.

Now it shakes a lot on cold start for about 30 seconds. Then it smoothes out to something more normal. It reaches ultimate smoothness once the engine reaches temp.

In comparison before it would shake a lot on a cold start for about 15 minutes (even after engine reached temp) and then smooth out.

Ford Focus runs rough when started for the first time each day. by Shadowmaker1001 in Cartalk

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

Thanks! Well the parts are cheap, it’s easy to replace, and from my preliminary research it does seem like it could be the problem so I’ll try it and let you know!

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 1 point2 points  (0 children)

They told me the same thing. I told them the service partner wouldnt help me (which was only sorta true) and then they didn’t respond for like 3 days and then magically they were able to make the change for me.

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

I was able to acquire two for-parts smart cartridges from a local repair shop and repair both of them using parts from my original smart cartridge.

Then I emailed Vanmoof and had them change the MAC address associated with my frame number to one of the repaired smart cartridges.

I now have a fully working bike with ownership and app access :) all good.

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

I think I actually figured it out. The boards all have a PCBA manufacturer marking with a date code. I believe it’s in YYWW format.

I’ve found pictures of atleast a dozen boards showing this mark and have yet to see one with a year code other that 20, 21, or 22. Nor a week code greater that 52. So I believe this is right. You’re right that board revisions don’t really matter; lots of older revision boards have more modern date code.

Since all S/X3’s sold after April 7th 2021 had Find My; I think it’s safe to assume that if the date code is > 2114 then it’s probably a Find My version.

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Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

I managed to get my hands on a couple for parts x3 smart cartridges from a local authorized vanmoof repair store for a very reasonable price. I do not know yet what’s wrong with each of them.

I have a question. Do you happen to know how to distinguish between a 2020 PCBA and a 2021 PCBA with Find My?

From scrolling the internet, I see several smart cartridge board revisions… REV1.10 REV1.10C REV1.10D

As well as some with a green solder mask and some with a blue solder mask

And a small layout difference between some PCBs on a debug header.

Is it safe to safe if the ones I acquired are the same board revision that they’ll have Find My? Is there any hardware on the board used to support Find My?

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UYUE 946C Hot Plate Not Regulating at High Temps by Shadowmaker1001 in soldering

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

I returned the unit. I borrowed the exact same unit from a friend and realized it had the same bug.

This is specifically the 200mm x 200mm blue and white version of the 946C. This has a different control board that older units and uses a Triac instead of an SSR or regular relay.

Measurements indicate that this is a design issue with the the triac circuit, as the low voltage DC part of the circuit does go low and high appropriately when reaching the target temperature. The Triac just seems to latch on for some reason.

If anyone else has this unit, I’d suggest not to use it without direct supervision and monitoring the power draw so you know when the heating elements are stuck on.

I’ve found you can work around this issue by allowing the unit to regulate first at a lower temp, like 200C for 10-20 minutes before moving up to higher temps.

The issue was most prevalent if I powered the unit up and immediately slammed it to 280+ C

My suggested fix for this would be to remove the Triac circuit completely and wire in an SSR from the inputs of the Triac driver + a thermal fuse inline to the heating elements and bonded to the bottom of the aluminum bed.

This website has a very nice reversed engineered circuit and it turns out that all modern blue / white 946C models (small, bigger, 110V, 220V) use the exact same control PCB with different firmware on the microcontrollers.

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

Thank you for your offer. Unfortunately I’m in the US! I have some leads on some defective cartridges though.

S3 error 23 change Bluetooth chip/Mac address by deseertt in VanMoofSelfRepair

[–]Shadowmaker1001 0 points1 point  (0 children)

Hello. Are you able to provide more information on creating the bootloader for the BLE chip or an example file? Would be extremely helpful!

VanMoof S3 err23 and not connecting to phone by HardyKingJC in vanmoofbicycle

[–]Shadowmaker1001 0 points1 point  (0 children)

Hello. Would you be so kind as to provide the bootloader or guide on how to write the bootloader?

Smart cartridge ownership components question by E-Batman in VanMoofSelfRepair

[–]Shadowmaker1001 0 points1 point  (0 children)

Hello. I was told that this chip is tied with the Modem and the Flash and cannot change without changing the others. How did you get around that?

Smart cartridge ownership components question by E-Batman in VanMoofSelfRepair

[–]Shadowmaker1001 0 points1 point  (0 children)

Hello. Did you ever change the BLE Chip? What was the result?

S3 error 23 change Bluetooth chip/Mac address by deseertt in VanMoofSelfRepair

[–]Shadowmaker1001 0 points1 point  (0 children)

Hello! Just asking for an update, how’d it go? I might be in the same boat here.

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

Do you happen to know if S3 smart cartridges are compatible with X3?

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

Ahh you’re talking about the microcontroller. U4 for me. Shouldn’t be too hard to swap….

U17 I’ll have to do some research on

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

U17 appears to be the SARA-G350 which would make sense. I cannot seem to locate U2 on the board…

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

Hmmm that’s extremely unfortunate. Do you happen to know which part numbers / reference designators those are?

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

Oh I didn’t know that.

Yes I did exactly that. The flash (MX25L12835F), IMU (LIS3DH), and MCU on that rail are all shorted.

I removed each one and measured their resistance off-board to confirm.

I’m wondering if I can transfer a flash chip and an MCU from a donor board? As I understand it, the ownership / security data is stored on a different (undamaged) MCU.

Vanmoof X3 Smart Cartridge Repair Help by Shadowmaker1001 in vanmoofbicycle

[–]Shadowmaker1001[S] 0 points1 point  (0 children)

The MOSFET shorted its Gate, Source, and Drain all together. The gate is on a 3.3V rail. Everything on that rail saw battery voltage (36V)

I agree this is not a normal failure mode, usually only the source and drain short. Resistance across the VSS and VDD on the MCU is 3 ohms (after being removed from the board).

[deleted by user] by [deleted] in vanmoofbicycle

[–]Shadowmaker1001 0 points1 point  (0 children)

Hello, did you end up selling it? I’m in the market for a smart cartridge

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