anderswallin.net

By popular demand, here are the schematics and pcb layouts for the optoisolator cards I made for use with the Mesa Electronics 5i20 servocard.

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Curing epoxy mouldings typically requires elevated temperatures (+ 40 to 70 C) for 4-12 h. Previously we have done this in a cardboard box with a car-heater continuously blowing hot air into the box. By adjusting the number and size of holes in the box the temperature can be crudely varied.

Here’s an attempt to create a better heater with temperature control.

Temperature controller with display and input buttons on the left. White temperature sensor in the middle. 200 W heater-blower box on the right.
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One of the most exciting things for a while now in the R/C world has been the ‘no crystall’ radios operating on 2.4 GHz from both Nomadio and Spektrum

Now it appears that the big players are entering the game. These pics of an upcoming Futaba product were just posted to the IOMICA forum:

The Rx on the right supposedly has two internal antennas (no wire antenna exiting the Rx) and weighs only 14g !

These images were found at
http://data.robbe-online.net/robbe_pic/P1001/P1001_1-F1901.jpg and
http://data.robbe-online.net/robbe_pic/P1001/P1001_1-F0901.jpg
but otherwise there seems to be very little information available…

If anyone knows more about this system please post a comment below !

This is the modified Spektrum receiver I have been using with my Futaba 3VCS this season.
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The DSM system by Spektrum RC (www.spektrumrc.com) is a new and exciting development.

I got my RF-module and receiver ahead of the radio that I have also ordered so I have time to inspect the DSM parts before trying them out…
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The best thing since sliced bread ! A digital PVR really transforms the way in which you use your TV. If you have digital TV but don’t own one of these yet then you are missing out big time !

Boxes with twin tuners for the terrestial network DVB-T were available for some time in Finland but it was only in the spring of 2005 when twin tuner DVB-C boxes became available. The Topfield 5100 was one of the first products on the market - and naturally I had to have it.

The functionality of the topfield can be extended with your own programs and there are large user communities at least in Australia, UK, and Germany.

Here I have taken a look inside the box and tried to describe the hardware. Some of the wilder hackers think it should be possible to run an entirely opensource software(VDR) on the box…