H3ll0 all !!
Is there any other way to access the Raspberry pi GPIO pins ..?? Since all the pins are occupied by wolfson card need help plzzz...
Check out these links
rpi.gpio - Getting more than 26 GPIO pins - Raspberry Pi Stack Exchange
Raspberry Pi MCP23017 Port Expander Board Kit | RPI-PORTEXP | HobbyTronics link for Raspberry Pi MCP23017 Port Expander Board Kit.
These basically discuss how to extend no. of gpio of pins but it is up to you to decide how to use them and configure the accessory attached to gpio pins(here PIface i think).
Ultrasonic Distance Measurement Using Python – Part 1 | Raspberry Pi Spy
Check this link for connecting a ultrasonic sensor and I dont think there is any option other than gpio pin extension.
well but you could use external usb sound card in place of wolfson.And then use gpio pins for anything you want to do.
Two of the Raspberry's GPIO pins on the P1 header are made available on the Wolfson card.
They are normally used as the UART serial console, but that function is easy to disable.
http://www.hobbytronics.co.uk/raspberry-pi-serial-port
Raspberry Pi • View topic - Easily disable / enable serial console
Then the two pins can be used as ordinary GPIO pins.
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Ragnar
Yes, most ultrasonic sensors I have seen use two GPIO pins.
You can use the pins on the Wolfson card to connect it.
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Ragnar
actually,I suggest you can try about another board same function as Raspberry PI named BANANA PI.Now it's popular~I heard from my friend about that,if you need more information,please contact me~miyali@sinovoip.com.cn
The Wolfson Sound Card doesn't fit on the Banana Pi.
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Ragnar
From the schematic, I take it that the audio card uses the i2c pins (1.3 and 1.5) on the header - can I still connect to these pins for another i2c device?
Dominic Amann wrote:
From the schematic, I take it that the audio card uses the i2c pins (1.3 and 1.5) on the header - can I still connect to these pins for another i2c device?
Yes, you can. I2C bus is designed for multiple devices.