I haven't had time to write up my TemPi notes, but I'll do that over
the weekend including a GitHub repo for it.
I believe David Goodger asked for links for good places to buy parts
for RPi projects.
Adafruit Industries
http://adafruit.com/
* LED Backpacks
* Raspberry Pi
* Sensors
* Jumper wires
SparkFun
https://www.sparkfun.com/
* Breakout board (PCBs that you can solder on headers for use on
breadboards)
* Sensors
* Their "accessories" like jumpers are more expensive than Adafruit
iMall - ITEADStudio (Hong Kong based clones)
http://imall.iteadstudio.com
* Really cheap breakout boards, sensors, LEDs, battery holders, etc
* NRF24L01 Mesh network transceivers -
http://imall.iteadstudio.com/im120606002.html
* Clones of Arduinos like the "Iteaduino" (sic.) with more headers,
switches, etc. -
http://imall.iteadstudio.com/im120411008.html
* I don't see the Aduino Nano (sic. - that's how this place spells
it for TM reasons)
I've been buying from iMall more than the others now because they
are really cheap -- quality seems to be the same as SparkFun and
Adafruit. iMall doesn't sell things like LED backpacks so I'm still
sourcing them from Adafruit.
A backpack saves on the number of wires. A 7-seg LED needs 10+
wires to drive if you just use GPIO headers. The backpacks add a
chip and you communicate with the chip via i2c protocol (only 4
wires, GND, VC - i.e. power, clk and com) which are shared with
other i2c devices.
--
Peter J. Farrell
Principal Technologist - Maestro Publishing, LLC
http://blog.maestropublishing.com
Identi.ca / Twitter: @maestrofjp
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