The long shoulder buttons, L and R, on the back and the reason they are referred to as analog buttons is because they act as a pressure sensitive buttons and can give various signals depending on how you pressed the button.

The sensor that can be used to detect light is an LDR. Since the LDR gives out an analog voltage, it is connected to the analog input pin on the Arduino. The Arduino, with its built-in ADC (analog-to-digital converter), then converts the analog voltage (from 0-5V) into a digital value in the range of (0-1023).

Digital sensors have low calculation range. For example, digital temperature sensors such as HYT 271 and SHT series have lower temperature range. But analog temperature sensors (RTD) have higher resolution (positive and negative temperature).

Analog Sensor: Push Button Monitoring. The simplest form of a changing analog reading might be the monitoring of a push button, held low by a pull down resistor. When the button is pressed the reading jumps to 255 as the analog pin reads 5V.

The most common way of input interfacing a switch (or push button) to an electronic circuit is via a pull-up resistor to the supply voltage as shown. When the switch is open, 5 volts, or a logic “1” is given as the output signal.

A Normally Open (NO) Push Button is a push button that, in its default state, makes no electrical contact with the circuit. Only when the button is pressed down does it make electrical contact with the circuit. When the button is pressed down, the switch makes electrical contact and the circuit is now closed.

A push button is a simple type of switch that controls an action in a machine or some type of process. Most of the time, the buttons are plastic or metal. The shape of the push button may conform to fingers or hands for easy use, or they may simply be flat.

They are used to turn the bubbles on and off. Toilet flushes – another use for our push button switches, you may have come across our push buttons in public toilets. Shower systems- For gyms, sports club or schools, our push button switches have been incorporated into the shower system to turn the water on and off.

A Normally Closed (NC) Push Button is a push button that, in its default state, makes electrical contact with the circuit. When the button is pressed down, the switch no longer makes electrical contact and the circuit is now open.

A “switch” is a binary device with an “on” and “off” position. A “button” is a binary device with a momentary “on” position, reverting to an “off” position. The button is usually used to send a signal to another switching device to change it’s state from “off” to “on” or the reverse.

A manually operated switch is a switch that directly controlled by hand. Type of manually operated switch are : Toggle switch. Slide switch.

A push button switch is a small, sealed mechanism that completes an electric circuit when you press on it. When it’s on, a small metal spring inside makes contact with two wires, allowing electricity to flow. When it’s off, the spring retracts, contact is interrupted, and current won’t flow.

You can choose between push buttons featuring normally open or closed contacts, which change state upon actuation. Continual pressure must be maintained on the button of a momentary switch to prompt the action. However, it will remain in a stable state within a latching push button until pressure is reapplied.

The one-way switch has two contacts and the two-way switch has three contacts. In a two-way switch, there are two, one-way switches combined in one. One of the terminals can be connected to either of the two, but not both at the same time. You flip the switch ON to light up the stairs as you walk up.

In a normal switch, the two terminals are either connected (as shown) or disconnected. When they are connected, the switch is “on.” In a three-way switch, the top terminal connects to one or the other of the bottom two terminals.

1 Way Switches: If a light switch is ‘1 way’ this means it is just an on/off switch. The single switch controls a single light (or lighting circuit). 2 Way Switches: A ‘2 way’ switch means there is another switch controlling the same light. These are often used on a stair case, large room with switches by each door.

The most common type of wiring in modern homes is in the form of nonmetallic (NM) cable, which consists of two or more individual wires wrapped inside a protective plastic sheathing. NM cable usually contains one or more “hot” (current-carrying) wires, a neutral wire, and a ground wire.

There are two primary types of outlets: domestic and industrial. While not obvious from looking at them, the two sides of an electrical outlet represent part of a ‘loop of wire’ and plugging an electrical device into that outlet completes that loop, which allows electricity to flow through the device so it can operate.

3-Prong Outlets. This is without a doubt the most common outlet in modern homes. It replaced the two-prong alternative as the go-to outlet for general electrical usage. It also is a 15-amp, 125-volt outlet but it has a third prong for grounding.