forgot to save

Author: soundanalogous

readme.md

@@ -6,10 +6,12 @@ Firmata is a protocol for communicating with microcontrollers from software on a
 
 ##Usage
 
-There are two main models of usage of Firmata. In one model, the author of the Arduino sketch uses the various methods provided by the Firmata library to selectively send and receive data between the Arduino device and the software running on the host computer. For example, a user can send analog data to the host using ``` Firmata.sendAnalog(analogPin, analogRead(analogPin)) ``` or send data packed in a string using ``` Firmata.sendString(stringToSend) ```. See File -> Examples -> Firmata -> AnalogFirmata & EchoString respectively for examples.
+There are three primary models of usage of Firmata. In one model, the author of the Arduino sketch uses the various methods provided by the Firmata library to selectively send and receive data between the Arduino device and the software running on the host computer. For example, a user can send analog data to the host using ``` Firmata.sendAnalog(analogPin, analogRead(analogPin)) ``` or send data packed in a string using ``` Firmata.sendString(stringToSend) ```. See File -> Examples -> Firmata -> AnalogFirmata & EchoString respectively for examples.
 
 The second and more common model is to load a general purpose sketch called StandardFirmata on the Arduino board and then use the host computer exclusively to interact with the Arduino board. StandardFirmata is located in the Arduino IDE in File -> Examples -> Firmata.
 
+The third and more experimental model is **ConfigurableFirmata**. ConfigurableFirmata is a branch of Firmata that breaks features such as Digital Input, Digital Output, Analog Input, Analog Output, I2C, etc into [individual classes](https://github.com/firmata/arduino/tree/configurable/utility) making it easier to mix and match standard features with custom features. You configure your sketch by adding or removing various include statements. See the [ConfigurableFirmata.ino](https://github.com/firmata/arduino/blob/configurable/examples/ConfigurableFirmata/ConfigurableFirmata.ino) file for an example that includes all available features. You are also able to choose between a Serial connection or an Ethernet connection type.
+
 ##Firmata Client Libraries
 Most of the time you will be interacting with arduino with a client library on the host computers. Several Firmata client libraries have been implemented in a variety of popular programming languages: