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i have a book of circuits that happens to have an 7 segment LED display circuit. i will scan if for you guys tomorrow if i remember but these things are pretty standard and you should be able to find it with google. basically instead of having your indicator wires leading from your 555 to the LED on the ring, you would simply lead it to your timing reading circuits. this will of course take much more space in your controller though.to do it you will need a 7-segment LED display, 7490 or 74LS90 and 7448 or 74LS48. now i say or because they will perform the same task but you will need to wire it to reset each time you change your mode or it will give a false mode indication.in all it may be better to drill some holes in the top of your controller for some small LEDs in a row to should which mode in a sort of tally mark because of the space this will take in your controller.Post Merge: August 16, 2010, 10:29:49 PMhttp://www.allaboutcircuits.com/vol_6/chpt_7/9.html i found this after looking for a circuit on google but it uses a 4511 to decode the binary into a display. it does not use a counter but switches to manually create a number. to make this work in your RF mod you will need to have a counter to create a binary number for a decoder to create a display.
on the other hand it is possible to have a controller use indicator lights separate from the ROL to represent a mode without taking large amounts of space. i think i may have a blueprint for that too but im not sure.