{"id":522,"date":"2011-05-22T17:26:16","date_gmt":"2011-05-22T15:26:16","guid":{"rendered":"http:\/\/www.anyma.ch\/blogs\/research\/?p=522"},"modified":"2011-05-22T17:26:16","modified_gmt":"2011-05-22T15:26:16","slug":"testing-the-videobass-amplifier","status":"publish","type":"post","link":"http:\/\/www.anyma.ch\/blogs\/research\/2011\/05\/22\/testing-the-videobass-amplifier\/","title":{"rendered":"Testing the Videobass Amplifier"},"content":{"rendered":"

Normally I was supposed to bring two of the videbasses to Paris this weekend – but I had to postpone it. Still not completely finished and to make things worse, I destroyed two of the screens by drilling through the led backlight cables. Stupid impatient me…<\/p>\n

So, while waiting for the replacement cables shipped by Mouser, I’m working on the software and doing some further testing of the videobasses and the amplifiers. And that’s maybe a good thing, because I already managed to brick two Atmega16 on the vamp board. Still don’t have a clue why and how this happened. But I also found some bad solder joints and I’m really glad to spend some more time with the machines before shipping.<\/p>\n

Temperature<\/h3>\n

One of my fears was to overheat the MacMinis because they are enclosed in foam. Of cause I left room for the exhaust on the rear of the MacMinis and there are holes in the foam for cold air to get sucked back in. I also paid attention to not building a short circuit for the hot air to get sucked in again. But still – is there enough airflow to cool the machines sufficiently?<\/p>\n

Some tests with Temperature monitor<\/a> show that there is no need to worry:<\/p>\n

After two hours of running the videobass (with the MacMini covered inside the case), I quit the application. Notice the immediate drop in temperature in the graph below:<\/p>\n

\"\"<\/a><\/p>\n

I restarted the videobass application, playing four movies at full throttle. Temperature raises again immediately.<\/p>\n

Two minutes later I put a fan on top of one of the air ducts to increase airflow. Nothing happens.<\/p>\n

I then removed the foam completely, see how the ambient temperature drops by half a degree in last third of the graph… There’s not even a change in the speed of the Mini’s fan which blows the whole time at almost inaudible levels. So I think airflow is not really an issue and it should be safe to operate the videobass in hot clubbing environments (it’s 24 degrees Celsius in my workshop at the moment…)<\/p>\n","protected":false},"excerpt":{"rendered":"

Normally I was supposed to bring two of the videbasses to Paris this weekend – but I had to postpone it. Still not completely finished and to make things worse, I destroyed two of the screens by drilling through the led backlight cables. Stupid impatient me… So, while waiting for the replacement cables shipped by […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"_links":{"self":[{"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/posts\/522"}],"collection":[{"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/comments?post=522"}],"version-history":[{"count":2,"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/posts\/522\/revisions"}],"predecessor-version":[{"id":525,"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/posts\/522\/revisions\/525"}],"wp:attachment":[{"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/media?parent=522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/categories?post=522"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.anyma.ch\/blogs\/research\/wp-json\/wp\/v2\/tags?post=522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}