Optical Encoders Help!!!!!!!!!!!!!

[apalrd]

You are actually limited to 12 in hardware. Why? The FPGA can only handle 8 Counters and 4 Encoders. the Encoder library uses Encoders for 4x decoding (meaning you can use up to (4) 4x-decoded encoders) and Counters for 1x or 2x decoding (meaning you can have up to (8) 1x or 2x-decoded encoders). 4+8=12, so 12 encoders max.

This assumes that each encoder is either quadrature or otherwise uses the FPGA Counters (such as a gear tooth sensor).

If you need more than 12, your best bet would probably be to use a co-processor to handle the inputs and either feed them to the cRio via SPI, I2C, Serial, or DACs.