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--- midiboxdmx [2008/12/13 00:20] – philetaylor
+++ midiboxdmx [2013/09/25 12:29] (current) – forum link updated smashtv
@@ Line 3: / Line 3: @@
 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 =====
@@ Line 60: / Line 60: @@
 ===== 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.
+{{:midiboxdmx:iic-dmx_if.png|}}
+{{:midiboxdmx:dmx-if.jpg|}}
@@ Line 104: / Line 108: @@
 Pretty much everything at the moment,