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public:warwick [2019/03/12 20:03] – [2019 Meetings] MikePpublic:warwick [2019/04/01 16:13] – [2019 Meetings] MikeP
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 Having started at 9:30 with bacon rolls and the consumption of many cakes throughout the day, the meeting finally closed at 17:00. Having started at 9:30 with bacon rolls and the consumption of many cakes throughout the day, the meeting finally closed at 17:00.
  
-The next meeting is scheduled for **<color #ed1c24>March 30th 2019</color>** when the **<color #ed1c24>CBUS from Soup to Nuts</color>** programme will commence+**<color #00a2e8>MARCH 30th 2019</color>** 
 +Almost forty members came along to the second meeting of year at the Leamington and Warwick MRS club rooms. Our signature bacon rolls were prepared on arrival as usual by MERG and LWMRS members Mike Collins and Mark Reader. 
 + 
 +{{:public:wnoag_mar_2019_-_1.jpg?400|}} 
 + 
 +This allows members to have an informal get -together before we settle down for the morning’s proceedings. 
 + 
 +**Mike Plowman** welcomed the members and introduced the theme for the 2019 – **<color #ed1c24>CBUS from Soup to Nuts</color>**. This is a year long programme to increase the understanding of the many aspects of CBUS from basic concepts through to planning, selecting, building and configuring modules through to building controls panels and putting detection to work on the layoutThe outline agendas for the next four meetings was shown and received enthusiastic approval from the members. 
 + 
 +This meeting concentrated on a recap of the CBUS. Mike described the basic principles of the CBUS system – the need for the twisted pair, continuity of the bus and the termination resistors. He showed the concept of the producer / consumer model and how events can produce actions on specific modules attached to the CBUS.  The benefits of the four-wire bus were explained and set the scene for **<color #00a2e8>Jeremy Mole</color>** to explain the differences between a CAN implementation in the automotive sector and the CBUS implementation of CAN. 
 + 
 +Jeremy, with his twenty years’ experience of CAN, was able to show the structure of the “messages” and the way they are prioritised on the bus. He estimated that on a typical CAN bus, where messages from sensors and actuators are passing every few microseconds in both directions, that the bus is about 80% utilised compared to a CBUS which is probably about 2% where messages pass every few seconds.  
 + 
 +After a coffee and cakes break, **<color #00a2e8>Simon West</color>**, the WNO Group lead for CANMIO reinforced the producer / consumer model with an explanation of where each of the CBUS modules actually fit. Both the original CBUS modules, the second generation and those shown on the software WIKI which provide additional or different function were covered. Many questions were posed and answered allowing many members to get a clearer picture of where they should start. 
 + 
 +Many members were able to avail themselves of the extensive kit locker which is now being managed by **<color #00a2e8>John Gowers</color>** on behalf of the WNO and East Midlands Groups. 
 + 
 +In the afternoon, members were able to mingle informally to ask specific questions of the specialists and to have techniques demonstrated. 
 + 
 +**<color #ff7f27>The next meeting is scheduled for May 11th 2019.</color>** 
  
 <color #ed1c24>**Further 2019 meetings will be held on the following dates**</color> <color #ed1c24>**Further 2019 meetings will be held on the following dates**</color>
-  * May 11th 
   * July 20th   * July 20th
   * September 21st   * September 21st
public/warwick.txt · Last modified: 2023/09/05 15:40 by simonwest

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