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Adafruit MCP2221A Breakout - General Purpose USB to GPIO ADC I2C - Stemma QT / Qwiic Reviews

4.9 Rating 12 Reviews
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Aleksei Pechnikov
Verified Reviewer
That’s a fantastic little devil! Just in a minute we can convert an image using Python on a computer and show it on I2C display and much more. Don’t need to use a silly Thonny MicroPython editor and wait to upload the code to a microcontroller every time.
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Posted 2 years ago
Laurence Skinner
Verified Reviewer
Very nicely produced board. The FAQ really helped to get it set up. The other Python "board" module is a gotcha, as is the need to have the environment variable set. Got it working successfully on a Pi and an Intel Debian box.
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Posted 2 years ago
Mario Sangiorgio
Verified Reviewer
This board helps me speed up my exploration of new sensors. Interacting with code in my computer is much faster than having to flash a microcontroller every time I change something
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Posted 2 years ago
Paulus Schulinck
Verified Reviewer
The Adafruit MCP2221A breakout fulfils my expectations completely! I bought it to create an easy interface between a desktop PC running Microsoft Flight Simulator 2020. The goal of the project in which I am using the MCP2221A breakout is to receive, filter and display the track flown by aircraft in use in the flight simulator. Data from the flight simulator is sent via a COM port of a PC running MS Windows (10 or 11). The data is fed to the USB-C input of the MCP2221A breakout. The output of the MCP2221A breakout, through its StemmaQT/qwiic connector, is fed to the StemmaQT/qwiic input of a Pimoroni i75 hub controller (PIM 584). On the MCP2221A I had to make 2 wire connections to let the MCP2221A convert USB-UART-to-I2C: Pin TX to Pin SCL and Pin RX to pin SDA (see the images). I also connected an external LED with a series resistor of 330 ohm between the MCP2221A breakout 5V pin and the SCL pin. This I did to let the LED indicate when GPS data has arrived. In the i7 hub controller I have running a micropython script that handles the received data. I added an Adafruit ISO154x optical I2C isolator between the MCP2221A breakout and the i75 hub controller. This was just a simple connect in series of the optical isolator that has two StemmaQT/qwiic connectors. This project is now running satisfactory. See the three images added. ToDo: create a repository on Github about this project. Check at: www.github.com/PaulskPt.
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Posted 3 years ago
Nice board, easy to use with drivers
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Posted 3 years ago
Michael Farmer
Verified Reviewer
Not had a chance to use it yet but order and delivery fine
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Posted 4 years ago
Phillip Rawlings
Verified Reviewer
Author didn't leave any comments.
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Posted 4 years ago
Great little piece of technology. Works out the box with Windows plug-and-play, along with it's libraries for the GPIO pins. Can't comment yet on the rest of the technologies hidden in there, but added a video of the GPIO tech.
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Posted 4 years ago