Blog
Submitted by matt on Thu, 04/02/2016 - 00:00
Everyone, when they're starting out on the Arduino and similar boards, learns to use the String object for working with text. Or they think they do.
Well, you should forget all you think you have learned about using Strings on the Arduino, because it is all wrong.
Submitted by matt on Mon, 01/02/2016 - 12:28
There are many sensors out there which output a voltage as a function of the supply voltage as their sensed value. Temperature sensors, light sensors, all sorts.
Measuring that voltage, and converting it in to real figures for whatever is being sensed is not actually as simple as you might at first think.
There are many examples on the internet for converting an ADC value into a voltage, but basically it boils down to:
Submitted by matt on Mon, 01/02/2016 - 12:18
Many of the programming questions on the Arduino forum can be answered with one simple response:
Implement a "Finite State Machine."
But what actually is a "Finite State Machine"?
Submitted by matt on Mon, 01/02/2016 - 11:29
I see many many questions on the Arduino forums from people trying to read data from a serial connection and not fully understanding how it works - and hence failing.
So, how should you read from serial?
Well, what a lot of new users don't realise is that serial data arrives one character at a time, and you have little or no control over just when that data arrives.
Pages
|
