Status July 2020

MCP and EFIS The MCP and both EFIS panels are fully functional and after I realized that I had forgotten to connect the GND of my electronics to the GND of the external backlight dimmer and had fixed this, the whole system is stable, also with the backlight LEDs embedded at the PCBs. Radio panels … More Status July 2020

Engine starter switch

At a 3D printable design for a solenoid engine starter switch can be found. Unfortunately the design for the axes is missing and the knob must be pushed in also for the CONT and FLT switch positions, while this normally is only required for the GRD position (as confirmed by someone who has access … More Engine starter switch

MCP – autothrottle switch, ‘active on’ version

As mentioned in the previous blog I have created a new variant of my solenoid autothrottle switch that is ‘active on’, i.e. by using a momentary ON toggle switch (1121S ON-ON + Momentary) the electromagnet (12V) must be powered to keep the switch in the ON position. Without current through the electromagnet the switch flips back to the … More MCP – autothrottle switch, ‘active on’ version

MCP, EFIS, MIP, SimVim, knobs and the throttle quadrant

The original prototype of the radio panel backplane PCB used almost all pins of an Arduino Mega. To get more inputs and outputs available, the authors of SimVim introduced the use of multiplexers for inputs and 7-segment display driver clocks and updated their software so that multiple LED drivers can be daisy-chained for up to … More MCP, EFIS, MIP, SimVim, knobs and the throttle quadrant

Yoke (EN)

In the Facebook Home Cockpit Builders Group I found a robust mechanism for the yoke column. For the column itself I bought a 60 mm PVC pipe and 90 degree bend in the local DIY shop Assembling of the mechanism was straightforward, drilling the two 10 mm holes through the PVC pipe must be done … More Yoke (EN)

Arduino control of the throttle quadrant

Before ordering the large and relatively expensive throttle quadrant PCB some real-world testing of the circuits was done, controlled by the Arduino. The first test was to see that the clutches were correctly switched off by the limit switches. They were, e.g. when a handle reaches full throttle position, but often (but not always) the … More Arduino control of the throttle quadrant

PCBs, panels and throttle quadrant cosmetics

A lot of cockpit work has been going on simultaneously this summer: the new Cessna GPS printed circuit boards and switches with integrated LEDs have arrived. But also the universal B737 COM/NAV/ADF PCBs, so I’ve been working on both in parallel. And because I was curious what the planned backlighting would look like I’ve also … More PCBs, panels and throttle quadrant cosmetics