The Sense Hat from Raspberry Pi was developed as part of the Astro Pi Project. The Sense Hat comes with its own library and a variety of hardware including: a 8×8 RGB LED matrix for output; a five-button joystick for user control; and the following sensors:
- Gyroscope used to measure the positioning of an object
- Accelerometer used to measure the rate of the velocity of an object
- Magnetometer that provides an electronic compass
- Barometric pressure
The purpose of this page is a quick guide to using the different aspects of the Sense Hat but for full details you should check out the API.
MySql – Insert
Inserting rows into MySql can be done in a couple of ways. You can use the INSERT…VALUES and INSERT…SET commands.
MySql is the worlds second most popular database engine (July 2013) and its open source. It is based on SQL (Sequential Query Language). Unlike MS Access it does not run as a stand-alone application. It runs as a background service on a computer (typically called ‘a server’) and you connect to it using a username and password. Once you have connected to the MySql server you can query it using SQL or Structured Query Language. The server will respond with the results of your query.
MySql – Relationships
Dealing with relationships in MySql is not as straightforward as either MS Access or as you would have hoped for. Creating simple primary keys isn’t too difficult
The Zumo Robot Shield can be fitted with a Reflectance Sensor Array that allows it to solve different line/maze style problems. The Zumo Shield libraries provide methods to help read values from the sensor array. Packages and installation instructions can be downloaded from GitHub and once installed the sensor library can be included from Sketch > Include Library. The sensor array uses the QTR sensors and therefore their library must also be included (installed as standard).
TKinter is the easiest way to get drawing in Python.