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Raspberry Pi Model B+ 512MB RAM
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Chuckt
Joined: Wed Jan 16, 2013 2:33 am
Posts: 165
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Quote: Here's a brief overview of what's new
•Dual step-down (buck) power supply for 3.3V and 1.8V
•5V supply has polarity protection, 2A fuse and hot-swap protection (so you can plug/unplug USB without resetting the board)
•New USB/Ethernet controller chip
•4 USB ports instead of 2 ports
•40 GPIO pins instead of 26. The top/first 26 pins match the original layout, 9 additional GPIO and 2 EEPROM Plate identification pins
•Composite (NTSC/PAL) video now integrated into 4-pole 3.5mm 'headphone' jack
•MicroSD card socket instead of full size SD
•Four mounting holes in rectangular layout
•Many connectors moved around There is TinyBasic for the Rasberry Pi and I was also thinking that for $40, I think it is possible to add a system to the 6502 family of chips if you want something cheap to control because there are now 40 GPIO pins.
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| Mon Jul 21, 2014 8:05 pm |
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BigEd
Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1821
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It's certainly an improvement, but note that that 40-pin connector has 12 power/ground pins, and therefore only 28 GPIOs. (Oh, and 2 are dedicated to an I2C for ID)  Cheers Ed
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| Mon Jul 21, 2014 9:21 pm |
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Dajgoro
Joined: Tue Dec 11, 2012 3:41 am
Posts: 68
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I got to poke a bit with one of those.
I don't like the way the pins are arranged, it is a mess to work with.
Also, the new model has no composite out, so I can only use it via ssh.
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| Tue Oct 28, 2014 11:05 pm |
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Chuckt
Joined: Wed Jan 16, 2013 2:33 am
Posts: 165
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There is a new model in the works and it is smaller and cheaper and it is going to have a touch screen: "Also notable with the A+ is its 40-pin GPIO socket, which should enable it to use any expansion cards designed with the HAT standard." http://hothardware.com/News/Raspberry-P ... picks=true
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| Mon Nov 10, 2014 2:15 pm |
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BigEd
Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1821
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Bear in mind the A+ has no ethernet connection - suitable for the basis of a portable appliance, perhaps. (You could add a USB wifi dongle...)
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| Mon Nov 10, 2014 4:00 pm |
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Chuckt
Joined: Wed Jan 16, 2013 2:33 am
Posts: 165
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BigEd wrote: It's certainly an improvement, but note that that 40-pin connector has 12 power/ground pins, and therefore only 28 GPIOs. (Oh, and 2 are dedicated to an I2C for ID) Cheers Ed I'm curious as to how others use the Raspberry Pi as a disk drive if there isn't enough I/O for being a GPU? http://amigadrive.blogspot.co.uk/
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| Mon Feb 02, 2015 11:11 pm |
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BigEd
Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1821
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What do you mean about a GPU?
You'll see from the schematic in the article you linked that the 34-way floppy interface may have as few as 15 interesting signals. Unlike an IDE interface which is 40-way and has 16 bidirectional data lines - that's because it's for drives with Integrated Drive Electronics, so the drive includes the serial-parallel conversions.
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| Tue Feb 03, 2015 3:19 pm |
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