Raspberry Pi 1 Model A+

by Raspberry Pi Foundation

Image of Board

The Model A+ is the low-cost variant of the Raspberry Pi. It replaced the original Model A in November 2014.

  • Broadcom BCM2835, ARM11 76JZF-S SoC @ 700MHz
  • 512MB RAM
  • Extended 40-pin GPIO header
  • Full-size HDMI
  • 1 USB 2.0 port
  • CSI camera port for connecting a Raspberry Pi camera
  • DSI display port for connecting a Raspberry Pi touchscreen display
  • 4-pole stereo output and composite video port
  • Micro SD port for loading your operating system and storing data
  • 5V/2A DC power input

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Adafruit Blinka Installation

We use a special library called adafruit_blinka (named after Blinka, the CircuitPython mascot) to provide the layer that translates the CircuitPython hardware API to whatever library the Linux board provides.

For example, on Raspberry Pi we use the python RPi.GPIO library. For any I2C interfacing we'll use ioctl messages to the /dev/i2c device. For SPI we'll use the spidev python library, etc. These details don't matter so much because they all happen underneath the adafruit_blinka layer.