Can LED Shift Indicators Be Created Without Arduino?

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hello I'm working on a manual shift override on an automatic transmission i have most of my design completed but have no clue where to begin the second half. the idea is to create something to tell me what gear i am in, i wanted to connect a circuit in parallel to the triggers for shifting to where clicking the up-shift trigger moves from one led to the next in the right direction and vise-verse for the downshift trigger, in all it would be 4 leds in total because it is a for gear transmission. could this be done without arduino? any ideas on how to do it?


any help is much appreciated so thank you very much in advanced

Wiring schematic of a transmission shift override: ECU, cruise control module, DPDT up and down shift relays, paddle switches, a dashboard +12vdc switch, an optional Arduino gear indicator with four LEDs, and electronically controlled solenoids NO. 1, NO. 2 and SL.
 
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depending upon the type of drive (ie front/ rear) you may be able to compare the rotational speeds of the engine versus the rotational speed of the driveshaft (gear ratios). With that, a frequency to voltage converter with a comparator circuit to compare scalar values of the engine speed with the drive shaft might work