ELM407 Rotary Decoder - 3 wire 4x Interface Description The ELM407 is an 8 pin integrated circuit that is used to convert the output from a rotary encoder into three signals (chip select, clock and up/down) that can be used to control various devices.
The low power CMOS technology used ensures that only a very small current is required over the entire 2.
0 to 5.
5 volt operating range.
There is no need for external filtering or debounce circuits with the ELM407, as this is all performed within the integrated circuit.
After debouncing the encoder signals, the ELM407 determines the direction of shaft rotation, and then generates the appropriate outputs.
A write sequence can also be generated if ...

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