Qty 2: 4x3 Matrix Array, 12 Keys Switch Keypad Keyboard DIY Arduino NOS

  Nice, Durable 4X3 Keypad Matrix Array                ~ Lot of 2 Pieces ~ Keypad Features: 1. Has 12 Buttons...Keys Are:  " 0 1 2 3 4 5 6 7 8 9 # * " 2. Has Simple 8-Pin Interface Connector (uses 7 pins...pin 4 not used) 2. Scan the 4x3 array with any microcontroller (see photo #6 of interface pinout) 3. Nice tactile feedback (other types?) 4. Convenient Standard Size 5. Has Four Mounting Holes 6. Durable Plastic Construction 7. Made by "Bomar"...an early calculator pioneer! 8. Standard 0.1" inch pin spacing on connector (for plugging into breadboards, see "NOTE" below) NOTE: Connector pins are spaced 0.1 inch for easy plugging into a solderless breadboard for easy prototyping. See Photo #4 (breadboard not included). Keypad Schematic Pinout: See photo #6 for "Scan-Pinout": For example, if you press button #1, pins 1 & 2 Connect. For example, if you press button #9, pins 6 & 7 Connect. and so on... (Easily scanned with a microprocessor.  Requires 7 microprocessor I/O lines.) You will receive Two Keypads with each Buy-It-Now    ~ US Stocked...Fast US shipping!  ~ Why wait 3 months for cheap overseas (China) parts?

Returns Accepted for this item if it's within 30 Days