NXP Semiconductors Interview and Rotary Encoders - Let's Make It - Episode 35

This week we have a jam packed episode, we have John Hull from NXP semiconductors who talks about the i2c, the protocol the history and much more. We also show how a rotary encoder works in preparation for next week's show.

For Show Notes go to: http://tech-zen.tv/episodes/shows/make-it-work/episodes/nxp-semiconductors-interview-and-rotary-encoders-episode-35

Input/Output Expansion With An Arduino - Let's Make It - Episode 31 - Tech-Zen.tv - Alixa.tv

So what do you do if the inputs and outputs on your Arduino are not enough for you and you need to add more.  In this episode we talk about just one of the ways.  We introduce you to a 16 bit I/O chip that runs over i2C.  You can put up to 8 of these chips on the i@c bus to add 112 I/O ports to your Arduino using just 2 pins on the Arduino itself.

The chip we demonstrate is a Microchip MCP23017.  You can get that chip from our online store at tech-zen.tv.

More LCD and I2C fun with the Arduino - Let's Make It - Episode 5

This week we continue the LCD discussion and show you how we got a serial (I2C) interface to an LCD to work.  We also show you a graphical display and the start of a new library we are creating for it.

We also, ordered and received since our last show the LCD shield from sainsmart.  We show you the simple change you need to make to the sample sketches to get them to work with this shield.  Also, how they implemented to buttons to save the number of pins used.