Works good.

Works good.

Works good.

Well packaged and excellent delivery time (12 calendar days from order). This module lets you connect 4 digital switches to a single *analog* input. It uses a voltage divider and connects different resistors, based on the buttons pressed. Reading the analog input lets you figure out what combination of resistors has been pressed. NOTE that the code given in the listing is wrong; it is for a digital input module, not this analog input module! A few internet searches on analog keypad inputs will locate suitable code. I am happy to recommend these items for fun and experimentation, but I don''t think they are ready for production use yet.

Well packaged and excellent delivery time (12 calendar days from order). This module lets you connect 4 digital switches to a single *analog* input. It uses a voltage divider and connects different resistors, based on the buttons pressed. Reading the analog input lets you figure out what combination of resistors has been pressed. NOTE that the code given in the listing is wrong; it is for a digital input module, not this analog input module! A few internet searches on analog keypad inputs will locate suitable code. I am happy to recommend these items for fun and experimentation, but I don''t think they are ready for production use yet.

Well packaged and excellent delivery time (12 calendar days from order). This module lets you connect 4 digital switches to a single *analog* input. It uses a voltage divider and connects different resistors, based on the buttons pressed. Reading the analog input lets you figure out what combination of resistors has been pressed. NOTE that the code given in the listing is wrong; it is for a digital input module, not this analog input module! A few internet searches on analog keypad inputs will locate suitable code. I am happy to recommend these items for fun and experimentation, but I don''t think they are ready for production use yet.