This is how I attached my iPhone to the handlebar of my bike, using equipment normally found in photographic studios (not specifically designed for bicycles).

The… contraption is made of three elements:

• one Manfrotto Superclamp
• one Manfrotto spigot
• one smartphone clamp (Shoulderpod S1, without the handle), with a 1/4″ threaded attachment for tripods

I managed to ride my bike and shoot some footage that then I sped up and inserted into my first ever video (note to self: next time, use a microphone for the interview)!