{"id":704,"date":"2014-05-27T21:26:09","date_gmt":"2014-05-27T20:26:09","guid":{"rendered":"http:\/\/EvertDekker.com\/?p=704"},"modified":"2023-01-10T21:59:52","modified_gmt":"2023-01-10T20:59:52","slug":"oldies","status":"publish","type":"post","link":"https:\/\/evertdekker.com\/wp\/?p=704","title":{"rendered":"Oldies Joshua Predecessor"},"content":{"rendered":"
\n

The predecessor of my Joshua Domotica<\/a> , here’s a more detailed overview of the electronics used.<\/p>\n

 <\/p>\n

Joshua predecessor controller board<\/strong>
\n\"\"<\/a>
\nFirst controller board for my domotica<\/a>. Was running on a 8052AH Basic and mounted in a 19″ rack with the other eurocards. Not in use anymore, everything can now be done with a simple avr controller.
\n\"\"<\/a>
\nSame board controller board, bottom view.<\/p>\n

 <\/p>\n

96 channel Ir-receiver board<\/strong>
\n\"\"<\/a>
\nIr receiver board to belongs to the above Joshua predecessor controller board. A lot of electronics for something simple we now these days with one receiver and the rest in software.
\n\"\"<\/a>
\nSame ir receiver board, bottom view. Routing and making a pcb was 25 years ago not that easy and cheap so wiring the pcb with roadrunner wire<\/a> was the simplest and cheapest way to make the pcb. Until you made a mistake…
\nYou can’t see it anymore but there where different colors for Vcc, gnd and data, but after all those years the colors are faded.<\/p>\n

 <\/p>\n

Ir Transmitter<\/strong>
\n\"\"<\/a>
\nThe ir transmitter for the above receiver board. I used it only to program my learning remote controller, so that’s why it’s not build for daily use. You can switch between 3×32 channels with the jumpers.
\n\"\"<\/a>
\nThe original Elektor design only supported 10 channels so I hacked in the other 22 channels that the Ir controller was capable of sending\u00a0 by adding my own keyboard.<\/p>\n

 <\/p>\n

Amplifier interface<\/strong>
\n\"\"<\/a>
\nThe interface card between my domotica and amplifier. Looking at the empty sockets I have already recycled some ics.
\n\"\"<\/a>
\nAnd on the back side again a lot of roadrunner wires.
\n\"\"<\/a>
\nFrom this interface board also a picture of the frontpanel.<\/p>\n

 <\/p>\n

Speech card<\/strong>
\n\"\"<\/a>
\nAnd the speech card, based on the Sp0256A and the CTS256A processor. We had a lot of fun with this speechcard. Nobody understood what was said and I didn’t get that, I understood everything that was coming out of the speaker. Looks like because me as the programmer did know what speech there was expected and therefore understood it all.
\n\"\"<\/a>
\nBackside with all the roadrunner wires again.<\/p>\n

 <\/p>\n

Rf Remote<\/strong>
\n\"\"<\/a>
\nI had someday a crazy idea to make a Rf remote control for the Joshua predecessor. This was begin of the ’90 when it was a bit complicated then now a days. This is the test setup to develop the software.
\n\"\"<\/a>
\nAnd the prototype, ram, rom, cpu all separated in dip package. The project never was finished, hard to realize with these components.
\n\"\"<\/a>
\nAnd the back with a lot of roadrunner wire again. Realizing this compact print on a regular 2 or 4 layer pcbs is hard to do, but with the roadrunner wire you can make as much “layers” as you like.
\n\"\"<\/a>
\nThe rf board with tx and rx module. You can buy these modules now for a couple of dollars, but then they cost \u20ac75 for a set rx\/tx.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

The predecessor of my Joshua Domotica , here’s a more detailed overview of the electronics used.   Joshua predecessor controller board First controller board for my domotica. Was running on a 8052AH Basic and mounted in a 19″ rack with the other eurocards. Not in use anymore, everything can now be done with a simple […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[119,122,121],"class_list":["post-704","post","type-post","status-publish","format-standard","hentry","category-oldies","tag-8052ah-basic","tag-cts256a","tag-sp0256a"],"_links":{"self":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/704","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=704"}],"version-history":[{"count":48,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/704\/revisions"}],"predecessor-version":[{"id":2071,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/704\/revisions\/2071"}],"wp:attachment":[{"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=704"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=704"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/evertdekker.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}