I've been searching the forums and can't find an answer to this issue.
I'm thinking I'm doing something stupid, but you know you never find it till you hit post.
I am going through the shiftin tutorial and have added a third 4021 to read the status of three 8 position dip switches.
I can read all three, but if the second or third has any of the switches off as you read from 0-7, the returned data ignores those and just shows the 3rd, 4th, or whatever starting first bit is on.
So I can get all 8 bits on the first 4021, then depending on the settings I'll get 4 or 5 bits and sometimes a single 0 if no switches were set on the others
I am planning to read each of the switches 8 bits and assign values in a program based on the settings, but I am trying to use each of the 4021's to read two 4bit values.
Does that make sense? The first half of 4021 A is one value while the second half is another value and so on for 6 value settings altogether.
Skipping initial 0 inputs on 4021 b & c won't work.
Also, while I'm here, I want to read the 1's and 0's of each bit and convert to a decimal number then do some fancy math.
So I need to read all 24 1's and 0' then break into 6 values, can someone point me at a way to pick out each bit and convert it?
In reading through the forums, I'm thinking the next tutorial should be getBit().
Am I going in the right direction there?