Archive of posts tagged wiringpi

Using the bcm2835 C library for SPI

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Yesterday I used Gordon’s WiringPi library to successfully read analogue voltage values from an MCP3002 chip over SPI. My plan for today was to try and read data as fast as possible, to begin building one version of an ultrasonic “bat detector”. However, I got a bit distracted.. When I looked in detail at the …

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Driving a 7219 LED matrix from a Raspberry Pi

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Flushed with my success in getting data displayed on my cheap LED matrix using a Bus Pirate, I decided that the next step was to see if I could get it working with a Raspberry Pi. It feels like I luckily won big when i tried starburst slot online, click here to get out from …

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