Throttle Travel Widget with servo-slow for S/C, 1+1 and 2+1 systems

This device is an optional add-on for a Single Channel setup using the emulation encoder, especially the 1+1 and 2+1 which have no configuration options. It sits inline between the throttle servo and the throttle channel from the receiver. It provides a servo-slow function and adjustable positions for low, medium and high throttle. Any of the 3 positions can be anywhere within the servo throw, which includes reversing the throttle by setting 'high' at the low end and 'low' at the high end. In fact the output is slightly extended - from 800ms to 2200ms to give a little extra throw if this is required. The purpose of the Throttle Widget is better control of an IC engine throttle - it allows you to precisely set the full and tickover carburettor positions, and to choose a mid setting for 'cruise' flight. Engines are very non linear in their response to carburettor openings, so half power might be at 25% throttle - the Widget allows you to set the 'mid' position to 25% or anywhere you like. The servo-slow function helps to prevent the engine coughing when the throttle is changed suddenly, by allowing the engine time to respond. Failsafe - it follows the receiver settings, so if you have failsafe set to low throttle, the Widget will set low throttle on failsafe. If you have failsafe set to 'no pulses' then the Widget will stop pulsing on failsafe. It simply mimics the receiver setting. This is a veroboard prototype and physically a little larger than I'd hoped, but today is Friday and the Pontefract PANDAS S/C meeting is on Sunday so time was limited. The planned enhancement will have one external pot, which you plug in to make adjustments, and then remove. This will make the enhanced Widget much smaller and a bit lighter. Cheers Phil