Hello tech support,Regarding the input trigger I have gotten feedback regarding the connection:
1. Connect VCC_EXP (J505-Pin2) to 3.3V reference
2. Connect an input signal with 3.3V max peak level (Min 0V) Square wave signal/trigger at 60Hz to the EXP_CON_SYNC_IN0 signal (J505-Pin6). Assume the capacitor (C85) is built in the controller board. The peak-to-peak value needs to match the reference voltage input (i.e. 3.3V input at VCC_EXP.) so that you would have an input wave that goes from 0V min to 3.3V max.
3. Using the LOGIC GUI: Set the GUI for Structured Light and static memory. Set the frame rate to 60 frames/sec or just slightly faster than the external trigger frequency, so that I can ensure that I will complete a display cycle before the next trigger is received. Also set GUI time to maximum available "Exposure Time": 16,660 micro-seconds. Set the 3.3V Ext option for the Frame Trigger (Vsync) option and Static image buffer option for Data source. Though, I came across this specific photo of "tbo"'s trigger connection and found that he has additional connection on J503 supplying 3.3V to pin 1 and grounded pin 6. I looked up on the controller schematics and found that it is connected to the PWM. Mt question he is that what are the J503 pins used for??tbo's connection photo is attached below:
RegardsWayne
Hi Wayne,
Welcome to DLP&MEMS forum.
The J503 pin has four PWM output signals. At present there is NO interface to program these pins. These are meant for controlling low cost LED driver systems. The low cost LED driver accept the PWM type input signal for the LED current control as compared to information sent over SPI Serial Peripheral Interface bus.
LightCommander uses SPI control based LED Drivers so we have not spent much time one enabling PWM o/p pins.
Let me know if it is clear.
Regards,
Sanjeev