Raspberry pi vs arduino remote sensing12/30/2023 In simple terms, microcontrollers are more basic hardware boards used for simple logic tasks whereas microcomputers are more complex in their build and capable of more advanced computation. The first and most fundamental difference to understand between the two pieces of hardware is that Arduino is a microcontroller while Raspberry Pi is a microcomputer. Here’s a quick comparison between the two to help you understand when to go Arduino and when to go Raspberry Pi. Before all that, however, came Arduino, a much more modest but still highly effective piece of hardware that’s stayed relevant in the rudimentary programming and prototyping market since arriving in the early 2000s.īoth have their strengths and uses, and both could work for whatever project you have in mind. The small but powerful microcomputer has been a smash hit in the DIY computing world since its introduction in 2012 and, now in its fourth generation, continues to go from strength to strength. You can then use either ipMIDI to send this information over wifi or ethernet to your Pi, or use BLE-MIDI to send it via bluetooth.If you’re at all interested in the world of computers and the Internet of Things (IoT), then you’ve more than likely heard of Raspberry Pi. However, if you are feeling a little more fancy than that, I recommend using the Arduino-MIDI library to turn your keypress into proper MIDI keyboard. Then you can send these out as messages over the UART on your RPi. So, with this board you can use the TouchLib library to read the hardware touch inputs. The ESP32 is a low cost ( 4.5$USD for complete dev board) arduino like microcontroller with high performance plus wifi and bluetooth That solution is to use an ESP32 as they have builtin touch sensor on 10 GPIO pins. However I have a much more practical solution that will give you much better performance at a low cost and with only relatively minimal amount of programming required. This is the technically correct answer to your "no hats" requirement. You'll never achieve the sub-pF sensitivity of the Arduino with the Pi (required to detect a hand 10 inches away from the foil), but detecting an actual touch from a 100 pF human should be possible.Īs Dmitry says, you can use capacitor-resistor network and measure the discharge timing to detect touch with the arduino software touch library. In any case, the capacitive sensing will be slower and less precise on the Pi, which may or may not be OK for the application you have in mind. It should be possible to figure it out by repeating the same measurement several times: human body capacitance changes slowly, while scheduling delays are random. You'll have to implement the exact same schematic: one output pin which changes state back and forth, and several input pins (connected via high-value resistors) which will follow the output pin after a certain delay, depending on how much capacitance that particular pin has.īecause capacitive sensing relies on precise timing, the implementation will be more complex and less reliable on the Pi compared to the Arduino - you'll have to figure out whether the delay you observe is due to the change in pin capacitance or to the scheduling of Linux. You could port the Arduino Capacitive Sensor library to the Pi, using one of the available GPIO frameworks.
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