Adafruit TCA8418 Keypad Matrix and GPIO Expander Breakout by Liz Clark published September 21, 2022, last edited January 22, 2025 posted in Adafruit Products Arduino Compatibles CircuitPython Breakout Boards STEMMA Save New Favorite × Please sign in to include this guide in your list of favorites. You will be redirected back to this guide once you sign in, and can then save this guide as one of your favorites. Download Overview Pinouts Python & CircuitPython Python Docs Arduino Arduino Docs Downloads Single page Feedback? Corrections? Primary Products Your browser does not support the video tag. Adafruit TCA8418 Keypad Matrix and GPIO Expander Breakout $5.95 Add to Cart Featured Products view all Your browser does not support the video tag. Adafruit TCA8418 Keypad Matrix and GPIO Expander Breakout $5.95 Add to Cart Membrane 3x4 Matrix Keypad + extras $3.95 Add to Cart STEMMA QT / Qwiic JST SH 4-Pin Cable - 50mm Long $0.95 Add to Cart STEMMA QT / Qwiic JST SH 4-pin Cable with Premium Female Sockets $0.95 Add to Cart STEMMA QT / Qwiic JST SH 4-pin to Premium Male Headers Cable Out of Stock STEMMA QT / Qwiic JST SH 4-pin Cable - 100mm Long $0.95 Add to Cart 10 Beginner Product guide Python Docs Page last edited September 15, 2022 Text editor powered by tinymce. Python & CircuitPython Arduino