Controlling a L298N H Bridge via and Arduino using Firmata in touchdesigner

Hi,
I am using an LFO with the frequency set to 60 this LFO is connected to math chops each scales the LFO output to 0 to 1 and 1 to 0 respectively. Outputs of these are related to 2 channels of constant chop connected to the Firmata pins for control. Firmata pins are set to output. These outputs are connected through the Arduino to the L298N Dual H-Bridge Chip. I am trying to create a 60 Hz cycle for these input to be 0-1,1-0,0-1…
Now my concern is that everything works well till I set the frequency 59. The minute the frequency become 60. LFO pauses at that value resetting or “Play” on/off doesn’t work either. What am I doing wrong. Thank You!