Hi,
I just rolled the dice on a 'dead' e-mythique. Thanks to everyone here for all the information so far, especially
@Zimmerframe and
@Dado for everything in the public, and also any/all of the information in the open source project on github.
Thanks to that, i've been able to acquire a compatible charger, trick the bike into powering on and identify the first issue with the display and keypad.
The 245 controller has weak (or no) pullups on the button inputs from what I can tell, which is causing phantom button presses, resulting in both the error 05 and 35. I threw together a little board with some switches and 10k's to 3v3 and the controller now behaves correctly, no faults or errors. Might at some point turn it into an inline fix for any E-mythiques presenting this fault that are no longer able to get support from CRC/Wiggle.
The 245 Controller also has no 120R termination resistor on the CAN. Not a gamechanger, but i'm a lot happier with one in place. I've started to generate a CAN DBC file for it, mainly out of curiosity as I don't think it really has any utility beyond what can be done with presumably the K1 devices or BESST.
I do have a few questions that might be answered elsewhere, although i have looked, so I would appreciate if anyone can help.
1. Compared to the E8000, the cranks are very stiff, I can hang a 1kg water bottle off the pedal when the crank is at 3 o'clock without it moving. Is this normal, or should I dig a little deeper?
2. What is your torque signal with no load? Mine is at 760ish mv, and when putting the bike into a mode, it tries to go on it's own. Hanging the 1kg bottle on the bike puts it at around 790mv, and I can get it up past 3000mv with bodyweight. It appears to be working, but uncalibrated.
3. Are each firmware version unique to the hardware configuration and battery configuration?
4. I read on another thread that someone replaced the display on a Vitus with an alternative model (I can't remember which), but doing so lost the calibration for the motor, even when returning to the stock display. At some point I would like to get rid of the display in favour of an E181, am I likely to reach the same fate? (and with a BESST or K1, can I backup my settings and load them in when the alternative part is fitted?)
Finally, I've been continuing to risk purchasing from Chiggle, as such I have a number of spares including cranks, cables, top and bottom battery mounts, displays, speed sensors, and even managed to snag a 2nd battery. If anyone does have an issue that can't be resolved by Aliexpress, send me a message. I don't really want to hoard, but at the same time I'm trying to prepare for zero support.