Hello everyone,
I want to start Zwifting but I have one question before I start buying everything…
Do you need a speed AND cadence sensor to play Zwift or is a speed sensor enough on its own?
I hope someone can help 
The speed sensor I want to buy: https://www.amazon.de/gp/product/B00G8QJ7BI/ref=ox_sc_mini_detail?ie=UTF8&psc=1&smid=A3JWKAKR8XB7XF
It is depending of your home trainer. If smart trainer , no need
Cadence is not required.
Speed is required if your trainer does not report power.
Ik have a Tacx Blue motion, so no smart trainer. Does this meander I do need cadance?
No with that trainer you don’t need cadence (I don’t know if the Avatar’s legs will move without a cadence sensor but that is just a visual thing.). My personal opinion is I would get a sensor that has speed and cadence as you may later want to see your cadence.
yes, you need speed and cadence sensor see https://support.zwift.com/hc/en-us/articles/203152565-Which-trainers-does-Zwift-support-
I am a little confused with all thema different answers but I Think i will take a speed and cadence sensor. Does anyone know any cheap andere good ones? Under €50?
I use one of these on my bike: https://www.ebay.com/itm/Bluetooth-ANT-Fitness-Tracker-Bike-Speed-Cadence-Sensor-Speedometer-M8X8/302102847688?hash=item4656bba0c8:g:0WUAAOSwh2xX-1zM
It has been working well sins January.
Thanks a lot everyone!