Install on a rasperypi zero or anything else with nodejs (lts version) installed.

• plug the USB cable with OTG cable on the second USB port
• download the sources
• have a look at bleno setup and https://github.com/olympum/waterrower-ble

npm install

it can tke a while as bleno must be compiled from sources.

node server.js

Your kettler bike will appear as KettlerBLE device with two services (power & FTMS)

• modify the index.ejs file with the ip of your raspbery
• start your browser pi-adress:3000 you can follow the bridge activity on a simple website. It will display the current power, HR et speed and some logs

• Zwift can connect and read the data.
• Zwift (ipad) recongnize the FTMS service
• ]ERG mode is not yet implemented (FTMS control point)