What inputs can I use with my Raspberry Pi? Part 1 - Switches and logic-level sensors
Push buttons - should I be using a resistor or not? (yes) - Raspberry Pi Forums
DS18B20 Raspberry Pi Setup - What's The Deal With That Pullup Resistor?
CSC 299 Sophomore Lab in Applied Computing: Hardware Projects for the Raspberry Pi
gpio - Wire Button Without Resistor - Raspberry Pi Stack Exchange
RPi Python Programming 15: Interfacing a push button & digital input
The Pi4J Project – Trigger Example
Raspberry Pi - GPIO Connector
The Raspberry Pi Hobbyist: GPIO Input Circuit
Pull down resistors "issue"? - Raspberry Pi Forums
Red Programming Language: July 2019
Raspberry gPIo - SparkFun Learn
RPi.GPIO basics 6 – Using inputs and outputs together with RPi.GPIO – pull-ups and pull-downs – RasPi.TV
Connect Raspberry Pi GPIO resistor - KaliTut
RPi.GPIO basics 6 – Using inputs and outputs together with RPi.GPIO – pull-ups and pull-downs – RasPi.TV
Raspberry Pi GPIO Pin Alternate Functions - dummies
Raspberry Pi GPIO Interrupts Tutorial - The Robotics Back-End
How can I interface a Raspberry PI GPIO to an open collector circuit to send / receive data? - Electrical Engineering Stack Exchange
GPIO Electrical Specifications, Raspberry Pi Input and Output Pin Voltage and Current Capability
Pull-up Resistors - SparkFun Learn
Recognizing and Coping with Contact Bounce on the Raspberry Pi - dummies
Chapter 6: Interfacing to the Raspberry Pi Input/Outputs – Exploring Raspberry Pi
Adding a Shutdown Button to the Raspberry Pi B+ - Documents - Raspberry Pi Projects - element14 Community
Raspberry gPIo - SparkFun Learn
