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A technical interruption to non-technical thread ;), Tesla inverter brain is Texas Instruments chip, see a teardown @7:30

Along w/ a SPDT start up switch connected to both PAS. With that scheme some circuit gymnastics would be required to take EN15194 for a ride! ;)

Edited the previous post to be more inline with EN15194 Yes, it is due to the necessity of being compliant with EN15194, otherwise there are ways to achieve w/o modifying internal logic

Luna cycle's BBSHD that runs VESC has 2-wire quadrature PAS (https://ebikes.ca/learn/pedal-assist.html#SignalLevels), which helps the VESC in figuring out the direction. If a start up assist (toggle) switch is added, VESC firmware may be modified to check the status of the switch & upon...

Okay, deleted

It seems Canada & Australia (at least New South Wales) currently have 500W as the limit

Ebike (electric bicycle) usage is very less in India, almost everyone gives me an alien look upon riding it (in a relatively well developed city in the country, counted among the second level ones, Tier-2). Above reminded me about the analog bicycle situation here, people generally view it as...

To add, modern cars (irrespective of ICE or not) are the worst product w.r.t privacy per Mozilla report, https://foundation.mozilla.org/en/privacynotincluded/articles/its-official-cars-are-the-worst-product-category-we-have-ever-reviewed-for-privacy/

Small size electric pumps might be helpful, like this I have not used it, but a bicycle mechanic friend of mine has good opinion about it

Yup, seems DIY ones have SMD's soldered, only THT's have to be

I think component soldering would be required with the above This probably is in essence same as above, but with components assembled & enclosure Note that it is single channel only

I don't think it is possible to determine sine vs square observing the meter variations. There is a lag in calculating/displaying the average value, with a low frequency it would keep on varying and it can't reach either peaks (0 & 4V). And if a high frequency signal is fed, I expect the average...

DS211/DS212 looks similar to that, but it costs similar to PC based scope. There are DSO138 available here, cost when translated would be around 15 quid Note: I have used none of the above (EDIT: except PC based scope) With a true rms multimeter, it would have been possible to figure out...

No I think many of the scopes of the kind you linked has STM32 as it's processor and there are few open source DIY scope projects using STM32 boards

In case you are not aware, PC based oscilloscope are cheaper

Okay, so the controller mixes the torque sensor feedback with a relatively high resolution PAS signal. A pure cadence sensing controller in conjunction with this high resolution PAS, the run on should be similar, i.e. negligible, though I could be wrong EDIT: Above assuming controller firmware...

The firmware running in the controller might still add it without exposing it to the configurator (not saying that is necessarily the case, but that there is a possibility, w/o seeing the firmware source one can't be sure). Also another cause for the lag is low pass filter, parameters of which...

Isn't there any noticeable lag at start/stop ? Torque exerted by the rider is pulsating (peaking twice) in a pedal rotation, to avoid jerky motion (& thus a pleasurable ride), normally controller does a low pass filter (plus ramp) over torque sensor input, this in effect causes a lag. The...

If current needs to be known directly, then yes. W/o any programming, I sometimes use it with oscilloscope (whenever current probe mentioned earlier is not available on loan at our incubator & when super accuracy is not required). Feed 5V, 2.5V out signal corresponds to zero current & the...

It depends on the hall sensor used. For e.g. Tektronix A622 current probe (as is suited for oscilloscope) uses hall sensor, in UK it might cost around £1000. There are hall sensor modules based on ACS712 that are not costly, reasonably accurate. And halls are often used in EV controllers where...