midiboxdmx
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midiboxdmx [2008/12/13 00:20] philetaylor |
midiboxdmx [2013/09/25 12:29] (current) smashtv forum link updated |
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| Midibox DMX is a DMX512 compliant controller for Midibox created by Phil Taylor - phil@taylor.org.uk | Midibox DMX is a DMX512 compliant controller for Midibox created by Phil Taylor - phil@taylor.org.uk | ||
| - | Originally Discussed [[http://www.midibox.org/forum/index.php?topic=12433.0|here]] | + | Originally Discussed [[http://midibox.org/forums/topic/11597-dmx512-controller/|here]] |
| - | Here is a picture of my test system, I will box this once I decide on an enclosure. I have also included a closeup of the only bit of extra hardware (other than MBHP modules) that is required! | + | Here is a picture of my test system, It is enclosed in an old Strand Tempus 2-12 case (I bought 4 very cheap!). |
| - | {{http://www.lansystems.co.uk/images/dmx/midibox-dmx1.jpg}}{{http://www.lansystems.co.uk/images/dmx/dmx-if.jpg}} | + | {{:midiboxdmx:mbdmx-boxed.jpg|}} |
| ===== Concept ===== | ===== Concept ===== | ||
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| ===== Hardware ===== | ===== Hardware ===== | ||
| - | Pretty much all of the hardware is based around standard MBHP modules, the only addition is my simple TTL Serial <-> RS485 interface the schematic of which is below. I made it on a 6x6 piece of strip (vero) board (I didn't bother with header connectors): | + | Pretty much all of the hardware is based around standard MBHP modules, the only addition is my simple TTL Serial <-> RS485 interface the schematic of which is below. I made it on a 6x6 piece of strip (vero) board (I didn't bother with header connectors) |
| - | {{http://www.lansystems.co.uk/images/dmx/IIC-DMX_IF.png}} | + | After reading the RDM spec, I realise that a simple BIAS circuit will also be required, this is only 2 extra resistors (+ 120ohm terminator) so I will post a modified circuit soon. |
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| + | {{:midiboxdmx:iic-dmx_if.png|}} | ||
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| + | {{:midiboxdmx:dmx-if.jpg|}} | ||
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| Pretty much everything at the moment, | Pretty much everything at the moment, | ||
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midiboxdmx.1229127609.txt.gz · Last modified: 2008/12/13 00:20 by philetaylor
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