The document discusses the development of low-cost client/server cores for remote experimentation in electronics. It presents two remote workbench designs - a boundary-scan test workbench and a microcontroller workbench. Both workbenches use inexpensive embedded internet modules and open source software to allow remote control and monitoring of experiments over the internet at low cost compared to previous solutions.

1. Low-cost workbench client / server cores for remote experiments in electronics J. M. Ferreira 1,2 , A. Dias 1,3 , P. Sousa 1 Z. Nedic 4 , J. Machotka 4 , O. Gol 4 , A. Nafalski 4 1 Faculdade de Engenharia (DEEC), Porto, Portugal 2 Buskerud College of Engineering, Kongsberg, Norway 3 INESC Porto, Portugal 4 University of South Australia, Adelaide, AUSTRALIA Stockholm, Sweden:: 2009 June 29 - July 2 These slides are available at http://www.slideshare.net/josemmf

2. Introduction and motivation Standardisation trends address high-end solutions Embedded internet modules offer low-cost alternatives with increasing performance Previous workbenches based on low-cost modules proved to be feasible

3. The IEEE 1149.1 boundary-scan test standard TDI TMS TCK TDO core circuitry core circuitry core circuitry 001010… 001010… Serial input Parallel input Parallel output Serial output mux mux C/S L

4. The remote IEEE 1149.1 boundary-scan test workbench TDI TMS TCK TDO core circuitry core circuitry core circuitry Boundary-scan board (experiment hardware) 001010… 001010… Internet IP camera AP7000 Base Linux board 10/100 Mbps Ethernet Experiment interface board

5. The remote microcontroller workbench Microcontroller board (experiment hardware) Digital I/O Digital I/O Internet IP camera AP7000 Base Linux board 10/100 Mbps Ethernet Experiment interface board

6. Client view (remote microcontroller workbench)

7. Client view (remote boundary-scan test workbench)

8. Conclusion Client and server code for the two workbenches is available as open source modules from Google code Performance is far superior to our previous solution based on Maxim-Dallas TINI ® network microcontrollers at ≈ same cost The same AP7000 Base board can run multiple experiments simultaneously

9. Thanks for your attention! REV2010 :: 7th International Conference on Remote Engineering and Virtual Instrumentation Stockholm, Sweden:: 2009 June 29 - July 2 These slides are available at http://www.slideshare.net/josemmf