![]() Open the Thonny Python IDE on Raspberry Pi (which uses Python 3) and enter the following code: It’s also possible to load the Arduino IDE on a Raspberry Pi if you prefer to program it that way. ![]() Here we’ll be using an Arduino Uno, but other Arduino boards will work in a similar manner. Open the Arduino IDE and load Example > Communication > SerialCallResponse onto your board. ![]() Serial Interface Basics: How to Connect Raspberry Pi and Arduino However, it is also possible to wire GPIO together directly, potentially involving level shifting if using a 5V Arduino. Here we'll be using USB ports to simplify connections. One must simply connect the two and write code to allow each board to send and receive signals and respond appropriately. While these other methods certainly have their place, serial seems to be a good combinations of being standard and simple to implement. While we’ll deal with serial here, there are a number of other ways to interface boards together for a “Pi-duino” control package: Arduino and Raspberry Pi Connection: Serial Interface & More Options This kind of setup also means you can put the Arduino closer to harm’s way instead of the Pi, which can be advantageous at times. If you’re using both together, you can offload the low-level tasks to the Arduino for interfacing with motors and the like, freeing up your Raspberry Pi “big picture” controller to perform more complex calculations. Additionally, there is a wide range of ready-made Arduino peripherals in the form of shields, allowing these boards to control motors, relays, displays, and more. So, unlike an Arduino, ensuring that it does X in response to Y in a reasonable amount of time depends on more than just the code that you write.Īrduino boards also feature analog input capabilities, something that Raspberry Pi single-board computers lack. While non-Pico Pi boards feature much more processing power than your average Arduino, they’re also burdened with an entire operating system. While you might be tempted to use a Raspberry Pi for your project and call it a day, there are many instances where you’d want to use both in tandem. Why Both? Projects Using Arduino and Raspberry Pi
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