1. Interface 1: Knobs GUI: link the buttons/knobs to “an action”; prompt MCA.py USB Client: do bit-masking and packet formation; send data as a control transfer Firmware/Hardware: extract control bits and link to Change variable -> new time – to – sample Change pot value -> new threshold voltage Change firmware logic -> new coincidence mode Change pot value -> new signal gain

2. Interface 2: Data Collection Hardware: get data to firmware using SPI or direct lines Firmware: process data into packets; feed the bulk endpoint 64-byte chunks of histogram + fast count; set UOWN and the USB SIE takes over USB Client: decodes packets using data protocol; ships data to the GUI GUI: saves data as ASCII; updates screen every 1 second and updates scale every 15 seconds

3. Completed TasksTasks in Progress Raphael Identified voltage buffer issues New schematic is more or less done Switched out DAC for digital pot Circuit debugging Test new buffer Dan UV flux circuit design/layout Sam Packet formation of histogram data and fast count data Started brown-bag lunch presentation End-to-end testing of ADC to PIC to USB to Mac Chen Continuous updating of USB client ASCII file w/ string input GUI histogram Team Make the front-end give us results for the X-ray source Test histogram code and constant time- to-sample code