Although it is not mentioned (probably no support) by the makeblock.
but there is a TTL “port” on the power supply board of the laser module.
probably will void the warranty:
Open up the power supply case and add a 2 pin connector to the board marked TTL GRN.
the other end to an arduino pwm port and bobs your uncle 8-bit intensity control.
p.s. I only bought the makeblock x/y plotter kit without the electronics, I use an arduino uno instead with grbl 0.9J firmware. I dont know if the orion supports pwm output.
gr jean