Attitude indicator fixed, reading position now working

Author: fransedano  |  Category: Attitude indicator, electronics, Instruments


Not much progress in the attitude indicator, because .. It has been snowing heavily … And we had to make some snowmen!

Finally I managed to install all the small wheels on the (almost) right position and now the instrument is working again:

I finished the board to control the attitude indicator by adding PWM sin generator and reading SIN/Cos values from resolver, now I can read the position from the attitude indicator. Now it’s just a matter of coding a PID controller on the microcontroller to position the indicator to the desired position.

This is the prototype board

A video showing how it works:

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Does anybody know a good watchmaker who can fix this mess?

Author: fransedano  |  Category: Attitude indicator, Instruments


I couldn’t follow the cables going out of the AC motors and the resolvers, so I thought it would be a good idea to disassemble the Attitude indicator and follow them. This is what I have now…. It’s going to be a looong weekend fixing this mess…

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