@badmo100 The encoder was used as a mode dial in an LCD monitor, however, you can still take apart cheap wheel mice. The operation principle is quite simple: one channel is used for clock pulse generation by positive edge transition, while the other channel sets the direction bit.You'll lose resolution but the method is exceedingly simple.
Can you include a schematic. I am a beginner to electronics and not sure how you are making the connections. I couldent get the original circuit to work quite right. It only pulsed on one line for both directions.
ah... I forgot to mention: you will need a 1-10k resistor between the capacitor and the gate input to protect the gate from transient negative voltage spikes (forward recovery of the diode and/or parasitic inductance)
What the chip ???
joaoefrem 6 months ago
@joaoefrem
It's a 74HC00 quad 2-input NAND gate IC. There are a few passive components on the bottom of the PCB as well.
hboy007 6 months ago
where did you get this rotary encoder. how does your system differentiate clockwise and counter clockwise rotations? thanks!
badmo100 9 months ago
@badmo100 The encoder was used as a mode dial in an LCD monitor, however, you can still take apart cheap wheel mice. The operation principle is quite simple: one channel is used for clock pulse generation by positive edge transition, while the other channel sets the direction bit.You'll lose resolution but the method is exceedingly simple.
hboy007 9 months ago
Can you include a schematic. I am a beginner to electronics and not sure how you are making the connections. I couldent get the original circuit to work quite right. It only pulsed on one line for both directions.
originaslpyderxta 10 months ago
@originaslpyderxta
please check out my video "simple rotary encoder logic" where I show how this circuit works
hboy007 10 months ago
@originaslpyderxta
ah... I forgot to mention: you will need a 1-10k resistor between the capacitor and the gate input to protect the gate from transient negative voltage spikes (forward recovery of the diode and/or parasitic inductance)
hboy007 10 months ago