ANT Forum

Hi everyone,

I want to build an application which allows to receive data from multiple heart rate monitors. At the moment I use a Ant+ USB2 dongle which has 8 channels. As I want to implement this in a gym (for example in a spinning class), I would like to be able to connect to more than 8 heart rate monitors at one time. Does an ant+ receiver/emitter with "industrial standard" (e.g. more channels available than 8) exist or is the only option to manage multiple Ant+ USB2 dongles?

Thank you!      

You can communicate with more than 8 devices with a single USB stick. The trick is to configure channel 0 with channel ID set to wildcards and open Rx scan mode, and just Assign the remaining channels with channel ID set to wildcards.

Channel 0 is then used to Rx from all master devices and channel 1 thru X are used to send messages as needed to the master devices.

I have an open source project at https://github.com/StephenHidem/AntPlus and NuGet packages on NuGet.org. The Github project also has examples for WPF and MAUI Windows applications. Check it out, it might be what you're looking for.

Best regards!