Howto:Build your own procedure trainer: Difference between revisions

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=== Radio Stack ===
=== Radio Stack ===
[[File:Pmpt-Radiostack.jpg|thumb|250px|The future radio stack]]
[[File:Pmpt-Radiostack.jpg|thumb|250px|The future radio stack]]
I started building a radio stack from spare parts. An old 19" token-ring hub was emptied from all content and now gives a nice chassis for the radios. All elements communicate via the I2C TWI interface of the used AVR microcontroller and are bridged with an [http://www.harbaum.org/till/i2c_tiny_usb/ i2c_tiny_usb] I2C/USB interface to the FlightGear computer.
I started building a radio stack from spare parts. An old 19" 3U token-ring hub was emptied from all content and now gives a nice chassis for the "radios". All elements communicate via the I2C TWI interface of the used AVR microcontroller and are bridged with an [http://www.harbaum.org/till/i2c_tiny_usb/ i2c_tiny_usb] I2C/USB interface to the FlightGear computer.
Schematics, firmware and userspace programs are at [http://gitorious.org/flightgear-pmpt/ Gitorious].
Schematics, firmware and userspace programs are at [http://gitorious.org/flightgear-pmpt/ Gitorious].
[[File:Pmpt-Radiostack-detail.jpg|thumb|250px|NAV/COMM radio and DME indicator|left]]
[[File:Pmpt-Radiostack-detail.jpg|thumb|250px|NAV/COMM radio and DME indicator|left]]
[[File:Pmpt-Radiostack-dme-front.jpg|thumb|250px|left|DME indicator, front view]]
[[File:Pmpt-Radiostack-dme-back.jpg|thumb|250px|left|DME indicator, electronics "half-solid state"]]
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