Shimano motor sensor 'Assist Mode' issue (Android app version 4.35.0)
Hello!
First of all, thank you for adding the option to display the Shimano motor parameters on the screen.
I found a small issue, though.
My e-bike is powered by a Shimano EP-801 motor.
When the motor is set to regular BASIC MODE, the active 'sensor cell' correctly shows the current mode that the motor is in (OFF/ECO/TRAIL/BOOST).
However, when the motor is set to FINE TUNE MODE, the active sensor cell does not show the number of the current mode. It shows either OFF or --.
There are up to 15 patterns in this mode, so if you could display them, please don't do it like '15/15' as this is how it works on the Shimano display, and it's not perfect because it's only correct if you have 15 active modes.
For example, if you set six modes using the E-tube app, selecting levels: 2/5/8/10/11/15, the Shimano display shows them as follows:
1/6, 2/6, 3/6, 4/6, 5/6, 6/6.
I would strongly recommend showing them with the exact numbers as in the E-Tube app, so that the sensor cell shows:
2
5
8
10
11
15
This helps us to determine how much power we are getting from the motor at the level we have set, because we know that a low numbers mean less power and 15 means maximum power.
To summarise, please resolve the problem with displaying the assistance level for the fine tune mode, and make sure that the number of the ASSISTANCE LEVEL is shown (and not just a level as 'one of xx').
Thanks!
The same problem 
Hi, thank you for the detailed report and the EP-801 specifics — that's exactly the kind of feedback that helps. Our Shimano support is built from reverse-engineered Bluetooth data, and right now we only decode the assist levels that the motor reports in Basic mode. In Fine Tune mode the motor sends the level in a format we haven't decoded yet, which is why the cell shows OFF or --.
Could you help us capture the raw data so we can add it? On a beta build:
1. Make sure you're on the latest Locus Map Beta.
2. Go to Sensors, open your Shimano STEPS bike, open its settings, and turn on "Enable raw capture" (visible on beta builds only).
3. Take a short ride (or 15 minutes of pedalling) with the motor in FINE TUNE mode, and cycle through several of your configured levels (e.g. 2, 5, 8, 10, 11, 15).
4. After disconnecting, grab the log file from /Locus/Logs/ named sensor_Shimano…_<date>.log and send it to us, together with a note of which level the bike display showed at each moment (e.g. "switched to level 8 at ~3 min").
With that capture we can decode the fine-tune levels and show the real assistance number. Thanks a lot for helping improve this!
Hi, thank you for the detailed report and the EP-801 specifics — that's exactly the kind of feedback that helps. Our Shimano support is built from reverse-engineered Bluetooth data, and right now we only decode the assist levels that the motor reports in Basic mode. In Fine Tune mode the motor sends the level in a format we haven't decoded yet, which is why the cell shows OFF or --.
Could you help us capture the raw data so we can add it? On a beta build:
1. Make sure you're on the latest Locus Map Beta.
2. Go to Sensors, open your Shimano STEPS bike, open its settings, and turn on "Enable raw capture" (visible on beta builds only).
3. Take a short ride (or 15 minutes of pedalling) with the motor in FINE TUNE mode, and cycle through several of your configured levels (e.g. 2, 5, 8, 10, 11, 15).
4. After disconnecting, grab the log file from /Locus/Logs/ named sensor_Shimano…_<date>.log and send it to us, together with a note of which level the bike display showed at each moment (e.g. "switched to level 8 at ~3 min").
With that capture we can decode the fine-tune levels and show the real assistance number. Thanks a lot for helping improve this!
Hello,
I didn't have much time, so the ride was really short.
Every 10 seconds or so, I switched to the next level of assistance, starting with OFF, then 3, 4, 5, 6, 7, 9, 11, 13, 15, 13, 11, 9, 7, 6, 5, 4, 3, and finally back to OFF.
If there is not enough data in the current log file, please let me know and I will record a longer one later.
Regards,
swissarmy
Hello,
I didn't have much time, so the ride was really short.
Every 10 seconds or so, I switched to the next level of assistance, starting with OFF, then 3, 4, 5, 6, 7, 9, 11, 13, 15, 13, 11, 9, 7, 6, 5, 4, 3, and finally back to OFF.
If there is not enough data in the current log file, please let me know and I will record a longer one later.
Regards,
swissarmy
Hi, and thank you
your capture was exactly what we needed. We decoded the Fine Tune data, and a fix is coming in one of the next beta builds: the assist cell will now show your current level instead of OFF/--.
One limitation: the motor only sends the position of the level over Bluetooth (1, 2, 3 … up to how many you've configured), not the actual E-Tube numbers like 2/5/8/10/11/15. Those exact numbers live only in the E-Tube app and never reach us, so we can't display them. What you'll see is the position, the same number the Shimano display shows as the first digit (e.g. "3" when it shows 3/9).
Thanks again for helping!
Hi, and thank you
your capture was exactly what we needed. We decoded the Fine Tune data, and a fix is coming in one of the next beta builds: the assist cell will now show your current level instead of OFF/--.
One limitation: the motor only sends the position of the level over Bluetooth (1, 2, 3 … up to how many you've configured), not the actual E-Tube numbers like 2/5/8/10/11/15. Those exact numbers live only in the E-Tube app and never reach us, so we can't display them. What you'll see is the position, the same number the Shimano display shows as the first digit (e.g. "3" when it shows 3/9).
Thanks again for helping!
Hello,
Please take a look at the screenshots I provided. They are from the STRide app, which shows the exact name of the finetune profile and the correct level of assistance as soon as it connects to the motor, so there is definitely a solution. Additionally, the colour changes from green to blue and yellow as the level increases.
If you would like me to create another log, please let me know the exact procedure I can follow.
Thanks!
Hello,
Please take a look at the screenshots I provided. They are from the STRide app, which shows the exact name of the finetune profile and the correct level of assistance as soon as it connects to the motor, so there is definitely a solution. Additionally, the colour changes from green to blue and yellow as the level increases.
If you would like me to create another log, please let me know the exact procedure I can follow.
Thanks!
Hello swissarmy,
thanks, this helped a lot. One, hopefully, the last piece is still missing. I need one more recording from you.
Could you record one more where you switch between two different saved profiles mid-recording? For example:
Just selecting a different profile is all that's needed — no need to edit anything. That switch is what lets us find the "active profile" field, so Locus can show the profile name too.
Thanks a lot!
EDIT: I've asked for a short ride > sorry, not needed. There seems to be no space for a "range" value.
Hello swissarmy,
thanks, this helped a lot. One, hopefully, the last piece is still missing. I need one more recording from you.
Could you record one more where you switch between two different saved profiles mid-recording? For example:
Just selecting a different profile is all that's needed — no need to edit anything. That switch is what lets us find the "active profile" field, so Locus can show the profile name too.
Thanks a lot!
EDIT: I've asked for a short ride > sorry, not needed. There seems to be no space for a "range" value.
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