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Ultegra 6800
#12
Hi Jan, I used the ‘calibrator’ script as base with a button increasing the PWM by 50 ms each press, so similar what you have in the video just on the bike with the wheel. I added an INA226 chip to measure current/battery voltage and then stepped through all the gears while monitoring the current, so that’s not peak it’s the hold current. I think I can still reduce the radius somewhat by adding a groove. I’ll try that next. I may also find one of these luggage weight scales to measure the force on the cable.


Messages In This Thread
Ultegra 6800 - by Zaphod - 10-04-2020, 11:26 AM
RE: Ultegra 6800 - by Jan Oelbrandt - 10-04-2020, 03:30 PM
RE: Ultegra 6800 - by Zaphod - 10-04-2020, 05:11 PM
RE: Ultegra 6800 - by visitor007 - 10-05-2020, 11:48 AM
RE: Ultegra 6800 - by Fesh - 01-13-2021, 01:20 PM
RE: Ultegra 6800 - by Jan Oelbrandt - 01-14-2021, 12:58 PM
RE: Ultegra 6800 - by Jan Oelbrandt - 10-04-2020, 05:44 PM
RE: Ultegra 6800 - by Ed_R - 10-05-2020, 01:11 PM
RE: Ultegra 6800 - by Zaphod - 10-05-2020, 01:55 PM
RE: Ultegra 6800 - by Jan Oelbrandt - 10-05-2020, 03:07 PM
RE: Ultegra 6800 - by Ed_R - 10-05-2020, 08:59 PM
RE: Ultegra 6800 - by Zaphod - 10-17-2020, 03:33 AM
RE: Ultegra 6800 - by Jan Oelbrandt - 10-17-2020, 09:51 AM
RE: Ultegra 6800 - by Zaphod - 10-18-2020, 01:15 AM
RE: Ultegra 6800 - by Jan Oelbrandt - 10-18-2020, 07:52 AM
RE: Ultegra 6800 - by Zaphod - 10-18-2020, 01:25 PM
RE: Ultegra 6800 - by Jan Oelbrandt - 10-18-2020, 02:47 PM
RE: Ultegra 6800 - by Zaphod - 10-22-2020, 08:32 AM

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