In this example we will connect one of the popular 8×8 LED matrix modules that can be found at low cost on various web sites. These commonly use a MAX7219 Here is how to connect this to your Raspberry Pi Board Pin Name RPi Pin …
Author
shedboy71
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In a previous example at connecting a mcp23017 to your raspberry pi we used a python script to flash LEDs connected to mcp23017 but there are other options available. In this example we look at a command line tool called i2cset i2cset is a small helper …
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One of the frustrating things about the Raspberry PI is the lack of any analogue inputs, this means there are a number of sensors that are commonly used that cannot be used quite so easily on a Raspberry PI. Examples of these are light dependent …
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MCP9808 digital temperature sensor example The MCP9808 digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.5°C (max.) accuracy. The MCP9808 comes with user-programmable registers that provide flexibility for temperature sensing applications. The registers allow user-selectable settings such as Shutdown …
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In this example we will flash an RGB LED using C Schematics Here is a schematic and layout Code This example requires wiringPi to be installed – http://wiringpi.com/download-and-install/ [codesyntax lang=”c”] #include <wiringPi.h> #include <stdio.h> #define REDLED 0 #define GREENLED 1 #define BLUELED 2 void init(void) { …
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This is a follow on from the Raspberry PI and python example – http://www.pibits.net/code/raspberry-pi-and-74hc595-python-example.php This example uses wiringPi Schematic Code This example is C++, it will flash an LED one at a time connected to the 74HC595 Call this shift.c [codesyntax lang=”cpp”] #include <wiringPi.h> #include <stdio.h> …