Raspberry PI Product

Comparison Chart Comparison Chart

So here we are, we are using 2 model raspberry pi for home automation, the cheapest one is the model A+ , come with single USB port , HDMI, 3.5 mm jack audio, DSI I/O for display and camera I/O. The model B+ come with 4 USB and better RAM with 512 MB than Model A+ 256 MB.

  • Model A+

Rapsberry PI A+ Raspberry PI A+

The Model A+ is the low cost variant of the Raspberry Pi. It replaced the original Model A in November 2014. Compared to the Model A it has:

  • More GPIO. The GPIO header has grown to 40 pins, while retaining the same pin out for the first 26 pins as the Model A and B.
  • Micro SD. The old friction-fit SD card socket has been replaced with a much nicer push-push micro SD version.
  • Lower power consumption. By replacing linear regulators with switching ones we’ve reduced power consumption by between 0.5 W and 1 W.
  • Better audio. The audio circuit incorporates a dedicated low-noise power supply.
  • Smaller, neater form factor. We’ve aligned the USB connector with the board edge, moved composite video onto the 3.5 mm jack, and added four squarely-placed mounting holes. Model A+ is approximately 2 cm shorter than the Model A.

We recommend the Model A+ for for embedded projects and projects which require very low power, and which do not require Ethernet or multiple USB ports.

  • Model B+

Rapsberry PI B+ Raspberry PI B+

The Model B+ is the final revision of the original Raspberry Pi. It replaced the Model B in July 2014 and was superseded by the Raspberry Pi 2 Model B in February 2015. Compared to the Model B it has:

  • More GPIO. The GPIO header has grown to 40 pins, while retaining the same pin out for the first 26 pins as the Model A and B.
  • More USB. We now have 4 USB 2.0 ports, compared to 2 on the Model B, and better hot plug and over current behaviour.
  • Micro SD. The old friction-fit SD card socket has been replaced with a much nicer push-push micro SD version.
  • Lower power consumption. By replacing linear regulators with switching ones we’ve reduced power consumption by between 0.5 W and 1 W.
  • Better audio. The audio circuit incorporates a dedicated low-noise power supply.
  • Neater form factor. We’ve aligned the USB connectors with the board edge, moved composite video onto the 3.5 mm jack, and added four squarely-placed mounting holes.

The Model B+ is perfectly suitable for use in schools: it offers more flexibility for learners than the leaner Model A or A+, which are more useful for embedded projects and projects which require very low power, and has more USB ports than the Model B.

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