07-08-2018, 08:49 PM
If you mean you are buying the
"TouchDRO Adapter for Glass/Magnetic Quadrature Scales"
and not rolling your own with an MSP430 eval board, then the above resistor is NOT necessary, as Yuriy board already implements 5v to 3v level shifting, ergo, can connect 5v level A,B signals from AR-5, et. al., direct.
And much smaller connector pairs than the honkin 1970's Bendix connectors are all around for cheap.
5 pins for A,B,5V,gnd, and shield is plenty. Or cannibalize your B&L (microwave) readout for mating connectors.
"TouchDRO Adapter for Glass/Magnetic Quadrature Scales"
and not rolling your own with an MSP430 eval board, then the above resistor is NOT necessary, as Yuriy board already implements 5v to 3v level shifting, ergo, can connect 5v level A,B signals from AR-5, et. al., direct.
And much smaller connector pairs than the honkin 1970's Bendix connectors are all around for cheap.
5 pins for A,B,5V,gnd, and shield is plenty. Or cannibalize your B&L (microwave) readout for mating connectors.