We do NOT recommend doubling up the inputs like this.
While in theory this would work like it does with batteries, the way the board is controlled means that the outputs cannot be changed at exactly the same time.
There is also only limited protection for dealing with reverse powering caused by these timing differences.
piborg
Wed, 09/28/2016 - 16:18
Permalink
Connecting Motor outputs in series
We do NOT recommend doubling up the inputs like this.
While in theory this would work like it does with batteries, the way the board is controlled means that the outputs cannot be changed at exactly the same time.
There is also only limited protection for dealing with reverse powering caused by these timing differences.