Here's a selection of our recent internal projects, designed either for our own use or for potential productization. ==== Wireless Sensor Network ==== MSS has designed a wireless sensor network and some environmental sensors. The system operates in the 900MHz ISM band and uses the [[https://en.wikipedia.org/wiki/DASH7|DASH7 Alliance protocol]] to communicate. The sensor boards (called //tags// in IoT sensor network parlance) that we have working now are a temperature/humidity/barometric pressure tag and an ambient CO2 concentration measurement tag. We've also designed a 900MHz DASH7 Alliance Protocol gateway board that plugs atop a Raspberry Pi computer and acts as a gateway between an IP network and the DASH7 RF network. {{popup>:internal_projects:env-tag.jpg?300x200}} {{popup>:internal_projects:co2-tag.jpg?300x200}} {{popup> :internal_projects:d7pi.jpg?300x200 }} ---- ==== CAMAC USB Serial Highway Driver ==== MSS has designed a USB Serial Highway Driver for the [[https://en.wikipedia.org/wiki/Computer_Automated_Measurement_and_Control|CAMAC]] bus. CAMAC is an acronym for //Computer Automated Measurement And Control//, and is a bus standard for nuclear instrumentation. While CAMAC dates back to the early 1970s, it is a current standard and is currently in widespread use in the nuclear physics research community. You can see a photo of some of CAMAC hardware in the MSS lab [[legacy_systems_support|here]]. MSS does a lot with CAMAC instrumentation, and we wanted an inexpensive way to control a CAMAC system from a USB interface. The CAMAC Serial Highway Driver (or //SHD//) accomplishes this task. CAMAC modules implement things like high-speed digitizers, counters, ADCs, DACs, pulse amplifiers, etc and are installed into CAMAC //crates//. A crate full of CAMAC modules can be controlled via a USB interface (and driver softare for Linux) using this board. {{popup> :internal_projects:mss-shd.jpg?375x250 }}