Cosmic Pi
Cosmic Pi - a low cost distributed cosmic ray detector, based on
Raspberry Pi.
It makes the detection and analysis of cosmic rays accessible to
students, educators and ordinary people. It uses a specially designed
detector combined with the low cost hardware of the Raspberry Pi
computer for data storage and online analysis.
As featured in THE Port 2014 (Pier X1 team).
TEMPLATE TEXT BELOW. PLEASE MODIFY*
Functional specifications
- 5 input/output ports with independently programmable direction (Lemo 00 connectors).
- Output levels: LVTTL, capable of driving +2.5 V over a 50-Ohm load. At power-up the outputs are in Hi-Z state.
- Input levels: any logic standard from Vih = 1 V to Vih = 5 V (programmable threshold).
- Output Rise/fall times: max. 2 ns.
- I/O bandwidth: 200 MHz.
- Programmable 50-Ohm input termination in each channel.
- LVDS I/O on the carrier side.
- One of the inputs is capable of driving a global clock net in the carrier's FPGA.
- Inputs and outputs protected against +15V pulses with a pulse width of up to 10us @ 50Hz.
- 4-layer PCB
Block diagram
Project information
- Official production documentation: EDMS EDA-02408
- Notes on the hardware design
- Software
- Frequently Asked Questions
- Users
Contacts
Commercial producers
- FMC DIO - FMC 5-channel Digital I/O module Seven Solutions, Spain
- FMC DIO 5ch TTL a Creotech, Poland
- fmc dio 5chttla INCAA Computers, Netherlands.
Project
- Erik van der Bij - CERN - General question about project
- Tom Wlostowski - CERN - Designer
Project Status
Date | Event |
27-05-2011 | Start of brainstorming. |
19-07-2011 | Five cards built. Has some bugs. |
20-09-2011 | Updated schematics in SVN. Will pass through CERN's design office. |
12-10-2011 | Production documentation available in EDMS. Project closed. |
07-11-2011 | Seven Solutions will produce and commercialise the cards. |
16-12-2011 | Order placed for production test software writing. |
24-02-2012 | Seven Solutions will deliver 5 cards 2nd week of March. Production test program will be written in March. |
20-03-2012 | Two IC's in design V1-0 are of wrong type. Will create a new version. No PCB change required. |
13-04-2012 | First version of Production test program written and documented in PTS project. |
13-04-2012 | Order for 10 V1 modules placed. |
15-08-2012 | V2-0 design being made to solve known Issues. V1-2 solves issue 487. Removed "withstands output shorted" spec: it works but is out of spec of driver IC. |
13-09-2012 | Delivery of 10 V1 modules will be shipped to CERN. |
25-10-2012 | Review of V2-0. |
26-06-2014 | A new version of the PTS test program exists that loads the EEPROM with SDB data. Please contact us for info. |
1 April 2015