I have a 110cc Chinese motor made by Lifan. It has four gears and a selector switch for gear indication that unlike some gear selectors I have read on this forum that have a variable output, this closes to ground for each gear. I was wanting to build a gear indicator using a small seven segment display. The SSD only needs to display five digits. 0, 1, 2, 3, 4. (and maybe a 'test' to light all segments)
The end result is when the motor is in Neutral, '0' is displayed, first gear '1', and so on.
I have been searching and reading about SSD, 4511 & 7446 decoders, Truth Tables, BCD, Binary and I am getting confused. I thought this would be a rather easy project but I am finding it may not be. The alternative is to skip the SSD and use seperate LEDS for each gear. That's cheesier than I want to do so I need a diagram showing how to make this happen and what components, (decoder/driver?) to use.
There seems to be many SSDs out there. I understand common Cathode/Anode. Is there one that is flush mounting? Looking in the size range of about 1/2-3/4 tall digits. It needs to mount on or near handle bars/gauge cluster.
Here is a quick diagram of what I think I need.
Any links or input is appreciated!
The end result is when the motor is in Neutral, '0' is displayed, first gear '1', and so on.
I have been searching and reading about SSD, 4511 & 7446 decoders, Truth Tables, BCD, Binary and I am getting confused. I thought this would be a rather easy project but I am finding it may not be. The alternative is to skip the SSD and use seperate LEDS for each gear. That's cheesier than I want to do so I need a diagram showing how to make this happen and what components, (decoder/driver?) to use.
There seems to be many SSDs out there. I understand common Cathode/Anode. Is there one that is flush mounting? Looking in the size range of about 1/2-3/4 tall digits. It needs to mount on or near handle bars/gauge cluster.
Here is a quick diagram of what I think I need.
Any links or input is appreciated!