22 lines
1.7 KiB
HTML
22 lines
1.7 KiB
HTML
define(`TITLE', `Another (better) MBus-Master, Part 2')
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define(`DATE', `2014-01-15')
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define(`CONTENT', `
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The new MBus-Master can now handle 250mA (supplying clients and TX path) and it is reliably possible to identify a 10mA swing on top of it (RX path) and convert it into a logic signal.
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<a href="http://a385e-5.de/wp-content/uploads/2014/01/Foto-2-e1389822292462.jpg"><img src="http://a385e-5.de/wp-content/uploads/2014/01/Foto-2-e1389822292462-300x225.jpg" alt="Foto 2" width="300" height="225" class="alignnone size-medium wp-image-336" /></a>
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Switching the TX-path with 1kHz, 80% duty cycle:
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<a href="http://a385e-5.de/wp-content/uploads/2014/01/Foto-1-e1389822333254.jpg"><img src="http://a385e-5.de/wp-content/uploads/2014/01/Foto-1-e1389822333254-300x225.jpg" alt="Foto 1" width="300" height="225" class="alignnone size-medium wp-image-335" /></a>
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Loading the TX-path with about 250mA (the current sink specifically built - see <a href="http://a385e-5.de/?p=264" title="Arduino operated Current Sink" target="_blank">here</a> - for this project is here in operation):
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<a href="http://a385e-5.de/wp-content/uploads/2014/01/Foto-3-e1389822313359.jpg"><img src="http://a385e-5.de/wp-content/uploads/2014/01/Foto-3-e1389822313359-300x225.jpg" alt="Foto 3" width="300" height="225" class="alignnone size-medium wp-image-334" /></a>
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Finally, here are the most recent schematics of this new MBus-Master:
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<a href="http://a385e-5.de/wp-content/uploads/2014/01/MBusMaster2.pdf"><img src="http://a385e-5.de/wp-content/uploads/2014/01/MBusMaster2-300x170.png" alt="MBusMaster2" width="300" height="170" class="alignnone size-medium wp-image-343" /></a>
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(The TX-test and the test for recognition of the 10mA swing have been done without the MCU at the moment.)
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