Hi, for Uno you will need 4 x 74hc4051. All 4 can share same 3 digital pins. Each '4051 feeds separate Arduino analog input. This gives total of 32 + 2 analog inputs.
Unfortunately 3 x '4051 would only give 24 + 3 analog inputs, so not enough.
Hi, for Uno you will need 4 x 74hc4051. All 4 can share same 3 digital pins. Each '4051 feeds separate Arduino analog input. This gives total of 32 + 2 analog inputs.
Unfortunately 3 x '4051 would only give 24 + 3 analog inputs, so not enough.