Raspberry Pi Model A+ Review
The Raspberry Pi Foundation brings out another almost perfect product!
I admit it. As soon as I saw the official announcement, I wanted some Model A+ Raspberry Pi’s 🙂
(Ok, fine, I admit I am enthusiastic about the Raspberry Pi Model A+)
It was really frustrating when the main Canadian distributor kept pushing the availability off, but fortunately after a few days of frustration – and a bit of googling – I found another source – and ordered five A+’s to play with.
I was pretty confident the Model A+ would be a great product. You’ll have to read this article to see if I was right to be confident!
Full disclosure: I purchased all the equipment used in this review, and no one paid me to write it… I am always unbiased.
The Raspberry Pi Model A+ looks really good!
(click on the image for larger version)
The Raspberry Pi Model A+ is essentially a Model B+, with the USB hub and Ethernet jack chopped off.
(click on the image for larger version)
As you can see above, it fits nicely on top of a B+
I thought it would also be interesting to show how different the layout is between a Model A and a Model A+
(click on image for larger version)
To me, the A+ has a far more practical layout – have to love the mounting holes and smaller form factor.
The A+ keeps some of the most important aspects of the Model B+
- 40 pin GPIO header (was 26 pins)
- one USB 2.0 ports (same as the original Model A)
- micro SD card socket (was full size SD slot)
- Switching voltage regulation (was linear)
- Improved audio quality due to separate audio low noise power supply
- Improved board layout
- replaced RCA video connector with combined video/audio 3.5mm 4 signal jack
- four proper mounting holes in a nice rectangular pattern
- rounded corners for little fingers
(Did else anyone find the … leak … the Friday before the official announcement, by the same retailer, a bit of a coincidence?)
The A+ is the same size as the ‘HAT’ standard – and it is definitely a cute little board.
Originally, the Model A was aimed at education. The Model A+ really targets the Internet of Things, and embedded projects – as those usage cases you can often get away with only having a single USB port.
Mind you, there is absolutely nothing stopping you from attaching a powered USB hub – which I did, for my testing.
(click on the image for larger version)
The most amazing part of the Raspberry Price Model A+ is its price of $20USD – beating the original Model A’s already impressive $25USD price.
Feature Comparison
| Rpi Model A+ | Rpi Model A | Rpi Model B | Rpi Model B+ | |
| Processor | BCM2835 | BCM2835 | BCM2835 | BCM2835 |
| ARM version | ARMv6 | ARMv6 | ARMv6 | ARMv6 |
| Cores | 1 | 1 | 1 | 1 |
| Clock Speed | 700Mhz | 700Mhz | 700Mhz | 700Mhz |
| BogoMips | 698 | 698 | 698 | 698 |
| GPU | VideoCore IV | VideoCore IV | VideoCore IV | VideoCore IV |
| Video HW Decode | yes | yes | yes | yes |
| Memory Size | 256MB | 256MB | 512MB | 512MB |
| Memory Type | SDRAM | SDRAM | SDRAM | SDRAM |
| Memory Speed | 400 | 400 | 400 | 400 |
| GPIO pins | 40 | 26+8 | 26+8 | 40 |
| I2C | 2 | 2 | 2 | 2 |
| SPI | 1/2CS | 1/2CS | 1/2CS | 1/2CS |
| UART | 1 | 1 | 1 | 1 |
| Camera Flex Socket | CSI | CSI | CSI | CSI |
| LCD Flex Socket | DSI | DSI | DSI | DSI |
| Ethernet | – | – | 10/100 | 10/100 |
| Controller | – | – | LAN9512 | LAN9514 |
| Storage | uSD | SD | SD | uSD |
| HDMI out | YES | YES | YES | YES |
| Video out | * | YES | YES | * |
| 3.5mm audio out | YES w/video | YES | YES | YES w/video |
| USB Host | 1 | 1 | 2 | 4 |
| Reset Button | header | – | – | header |
| Mounting holes | 4 | 2 | 2 | 4 |
| Size | 65mm*56mm | 85mm*56mm | 85mm*56mm | 85mm*56mm |
| MSRP | $20.00 | $25.00 | $35.00 | $35.00 |
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Article Index
- Introducing the Raspberry Pi Model A+, Feature Comparison
- 40 pin GPIO header, Only ONE USB Port
- Switching Power Regulation, Improved Board Layout, Software Compatibility, Hardware Compatibility
- Hardware Compatibility (continued)
- USB WiFi stick compatibility, Power Consumption
- Power Test Results, Conclusion
