Open Ergo - Jim Flood design

[Rasbats]

The distance and time are being shown but not the strokeRate or Calories. I am using 1 bar magnet with a tubular style relay switch.

Moving the magnet by hand across the relay does activate the stokeRate but not when I row. Rows show about 50m in 30s. Is this about right?

Recordings are not being made for the rowing sessions, only for moving the magnet by hand.

Suggestions for getting the strokeRate to show would be welcome.

My config and rowerProfiles are pretty much the standard issue and shown below.

Are there profiles for the Open Ergo?

rowerProfiles.js
config.js

p.s. For "hand rowing" I can now feed the strokeRate to OpenCPN as speed using mqtt. Just need to get the rowing monitor set up correctly.

[JaapvanEkris]

First off: soo cool! I am a coauthor of a book with Jim (book is to be released soon), who sadly passed away about a year ago. So nice that people still use his design. If you have a link to his schematics, please share so I can restore the broken link.

We have a manual for setting up OpenRowingMonitor on an unknown machine: https://github.com/JaapvanEkris/openrowingmonitor/blob/main/docs/rower_settings.md

If you run into questions or any kind of trouble, please drop a line here and we'll help you further.

[Rasbats]

https://worldrowing.com/wp-content/uploads/2020/12/Mark6instructions_English.pdf

From the website: https://worldrowing.com/about/get-involved/

At the bottom of the page.

[Abasz]

I am using 1 bar magnet with a tubular style relay switch.

Do you mean reed switch? relay is something different.

Besides I think the issue is that either your reed lacks the frequency (i.e. the magnet is too fast when passing to trigger) or the magnet is not strong enough (I recommend neodymium). Do you have the data sheet for the reed?

[Rasbats]

Do you mean reed switch?

Yes, it is a reed switch. No data sheet available.

createRawDataFiles: true, was in the wrong place. I will test again tomorrow. Thanks for the help.

[Abasz]

Yes, it is a reed switch. No data sheet available.

Based on you description this is a trigger issue. The magnet cannot "saturate" the trigger at high speed as it does not spend enough time in the proximity. The magnet maybe too far, not strong enough etc. Here is a good video on the reed: https://www.youtube.com/watch?v=7LimjYS04FQ&t=278s

[Rasbats]

It looks like I have a problem with the reed switch. Have ordered a replacement.