I setup a test with the Neato LIDAR so I could measure the laser pulse while the LIDAR assumed it was rotating at 300 RPM. Using a microcontroller (msp430F1232) I simulated the pulse train that is normally received by the Piccolo Board from the slot sensor. This meant I could connect the scope to the LIDAR and take some measurements.
Here are a few pictures of my test setup and from my notebook on what I found. Keep in mind until I determine more about the laser module this information is incomplete. I'm just getting warmed up!
The test setup... Black box above the breadboard is used to supply the 3.3V for the Neato Piccolo board and supply the simulated rotation signal. The small red board on the breadboard is a FTDI board feeding data from the LIDAR into my PC.
Laser is pulsed on for 200uS and off for 350uS while operated at a simulated 300RPM.
Scope probe in the back of the module measuring laser feedback photodiode. Wires from the Piccolo Board are soldered to a header which is placed in the breadboard.
Some information about the LDS HORIZ BOARD which the Piccolo board and module above mounts too. Pulse train shown at the top, notice the start is a half long pulse followed by 14 full length pulses. This is how the module determines its rotational speed and makes adjustments to the motor speed which is spinning the module.
Observational data about the laser pulse, maximum and minimum rotational speeds that the laser will operate, etc.