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  1. Hi! My professor loaned to me their Digilent BASYS2 FPGA board. We wish to develop an FPGA-based Laser Remote Sensor (LIDAR) system. The BASYS2 will be triggered by the pulse driver of our Laser Diode. The Laser Diode pulses will be detected by a photomultiplier tube detector at selected rates and bin widths. We will connect the output (analog) of the photomultiplier tube to the BASYS2. How can we do this? Is it via the PMOD? Do we need an A/D converter like the PMOD AD1 or PMOD AD2? The BASYS2 has 4 PMODs with 6 pins each. Which PMOD (AD1 or AD2) is better for us? The AD1 has 6 pins only but has 2 channels while the AD2 has 12 pins and 4 channels (and is also half the price). If we buy the AD2, can we connect it to two PMODs in the BASYS2? Will this work? For another question, once the BASYS2 receives a trigger, the BASYS2 will read the PMOD to get the analog reading from the photomultiplier tube. How can we get the reading? Is it via the register address for that PMOD? Since this is digital, how can we know the voltage reading of the photomultiplier tube? Sorry for asking too many questions. Thanks in advance! Sincerely, Edgar Vallar