Thanks. I wasn't aware counting dials would be suitable in this case.
They'd be OK for the rudder and aileron dials as they're on the top of the box, but not so much for the elevator dial which is on the side and I tend to move it using the rim of the knob I've used for it.
These are the knobs I've currently got on each pot -
http://www.soundtronics.co.uk/37mm-chrome-knob-with-arrow-for-6.35mm-shafts.htmlIf I could find counting dials that are the same size as the dials I've got and I can turn via the edge of the rim that'd probably be the best, and easiest/cheapest, solution. I like the look of the type of dial in your 2nd link BTW, well the counter on the top of the dial at least, that looks easier to read than the one that looks like an old safe combination dial, but again probably wouldn't work on my elevator pot because it'd be pointing sideways and I'll not be able to see the dial...
As well as not knowing how much I've turned the dial I've also noted that unless I check in the cockpit (and not all planes have working trim dials) I don't know where centre is so each time I fly in IL2 1946 I have to check I've got the dials at centre, especially after each mission where I've trimmed a plane during the mission.
If you just want to know roughly there, stick this thing in,
https://www.sparkfun.com/products/11643. It will even plot a graph for you. It's an Atmel XMega-based tiny oscilloscope, I use it to monitor the voltage of axes and to reconfirm that I am reading the right ADC values when I do development for Hempstick, instead of hooking up a chunky real oscilloscope. I am sure it can do 2 axes but 3? I don't know. Plug a second one in?
It gives you voltage though, not converted digital values. But there might be a way to configure it to display digital values, I am not sure, RTFM. Even if you could, it would read 0 to 1023, because it's a 10 bit ADC there. Whether it can display %, I don't remember. You might as well look at the plot of voltage, which gives you at a glance roughly where it is. Be forewarned though, this is a dev tool and the MCU has very few legs so the developer had to multiplex buttons, thus the navigation and uses are a bit convoluted. But once you configure it the way you want, you can pretty much leave it there. It will remember the settings between reboots.
I used to print out such values on an LCD on an AVR board, predecessor of Hempstick, but I found it too gimmicky and the board costs too much so I never develop it further. It's not very hard to hook up a "supported" OLED display in Hempstick if all you want is printing some text, because Atmel's ASF comes with a driver for it. But that kind of functionality in Hempstick is very low on my priority. However, it's OpenSourced though, code it yourself. That's the beauty of OpenSource isn't it? Low on my priority, high on yours, you code it.
