By now, you’ve probably heard of the Raspberry Pi and have probably already made your way through some of its accessories.
But what about the other ARM devices that use it?
And what are the best RDA accessories for your specific Pi?
I’ve put together this list to help you with that task.
If you’re wondering, it’s not a comprehensive list, but you can certainly find a list of the top 10 best RDI devices.
For more about Raspberry Pi, check out our guide to building an Android-based Raspberry Pi.
There’s a lot to cover, so let’s dive right in!
First, a quick note on how to build your own RDA.
You’ll need an RDS (read: RPi) based on either a Raspberry PI 3B, 3B+ or an ARM-powered Raspberry Pi (3,5,8,8+).
A RDS is usually sold in a plastic box with a screw on top and a connector that lets you connect to the Pi.
You can also buy them on eBay for as little as $25.
(If you’re in the US, they’re usually cheaper than Amazon.)
You can use any kind of USB hub that’s compatible with your Raspberry Pi’s GPIO pins.
The Raspberry Pi has its own USB port, so you can connect it to any computer or other device with an Ethernet connection.
You’re also free to buy a few different RDSs in different sizes.
The biggest difference between the different models is in their power consumption: most of them use the GPIO pins for power.
These devices also have some other options, like microSD slots for storing data, a built-in fan for cooling, or a wireless keyboard.
If that’s all you have on hand, you can also pick up a cheaper one for $20 or a larger one for about $100.
In terms of power, the cheapest RDS I could find is the $25 Pi 2 with its 32 GPIO pins, so if you’re a little more budget-minded, the Raspberry Pis’ GPIO pins are your best bet.
If, however, you want a little extra power, you should probably pick up the Pi 3 or Pi 4, which are capable of a bit more.
(Both are capable, but only the Pi 4 has a dedicated GPIO pin.)
If you do decide to upgrade to the Raspberry PI 5, you’ll have to decide between the Raspberry Model B+, Raspberry Model C+, or Raspberry Model A+.
The Model B+ and Model C+ are cheaper, but the Model A+ is the best value right now.
The Model A has 32 GPIO, and the Model B has just four.
You should pick one based on what you want.
I think the Model C is the easiest to get a feel for, but it’s definitely worth the extra money for the extra features and extra power.
For an idea of what a typical RDA looks like, check our guide for building a Raspberry Model F. And if you need a little guidance, you might want to check out my tutorial on how I built a Raspberry pi with an RCA cable.
As always, feel free to reach out to me if you have any questions about this guide or any of the devices I’ve included.
The bottom line: you don’t need an expensive RDS to get started.
There are a lot of cheap options out there, and if you want to make a serious dent in your Raspberry pi’s battery life, a little budget can be just as important as the best accessories.
I hope this article has given you some insight into how to start building an RDI.
If I missed any accessories, please let me know in the comments and I’ll add them to the list.