Logic Level Converter (#SFE08745)
The SparkFun logic level shifter is a small device with
MOS-FET's that safely steps down 5V signals to 3.3V and steps up
3.3V to 5V. Two inputs and two outputs are provided for each
side. It can be used with normal serial, I2C, SPI and any other
digital signal.
More information is available on the website of
Sparkfun.
€ 1,70 (€ 2,02 incl.VAT)
Power Supply Stick 5V/3.3V (#SFE09319)
This is a very simple board that takes a 6-12V input voltage and
outputs a selectable 5V or 3.3V regulated voltage. All headers
are 0.1" pitch for simple insertion into a breadboard.
More information is available on the website of
Sparkfun.