The **FYA-R2005ZX** is a high-performance **7-Segment LED Bar Graph Display** module. These components are commonly used in industrial control panels, audio equipment (for volume levels), and battery capacity indicators. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications The FYA-R2005ZX is a 20-segment bar graph, meaning it contains 20 individual LED rectangles arranged in a single row. | Parameter | Specification | |:---|:---| | **Number of Segments** | 20 | | **Light Color** | Red (Standard) | | **Surface Color** | Black Face | | **Segment Color** | White (When off) | | **Configuration** | Common Cathode or Common Anode (Model dependent) | | **Mounting Type** | Through-Hole (DIP) | --- ### 2. Electrical Characteristics To ensure the longevity of the component, it must be operated within specific electrical limits. | Characteristic | Symbol | Typical Value | Unit | |:---|:---|:---|:---| | **Forward Voltage** | $V_f$ | 1.8V - 2.2V | Volts | | **Forward Current** | $I_f$ | 20mA (per segment) | mA | | **Peak Forward Current** | $I_{fp}$ | 100mA | mA | | **Power Dissipation** | $P_d$ | 60mW (per segment) | mW | | **Operating Temperature** | $T_{opr}$ | -40 to +85 | °C | --- ### 3. Pinout and Internal Circuitry The device typically features a dual-inline package (DIP) layout. Since there are 20 segments, the pin count is usually 40 (20 pins for anodes and 20 pins for cathodes). * **Logic:** Each segment acts as a single diode. * **Driving:** It is usually driven by a LED driver IC (like the **LM3914** for analog levels or a **74HC595** shift register for digital control). --- ### 4. Key Application Use-Cases * **Audio Level Meters:** Displaying VU (Volume Unit) levels. * **Power Indicators:** Showing battery percentage or voltage levels. * **Industrial Sensing:** Visualizing pressure, temperature, or flow rate in a linear scale. * **Control Panels:** Providing quick visual feedback for variable parameters. --- ### 5. Simple Driving Code Example (Arduino) If you are using a shift register to control the bar graph, the code structure would look like this: ```cpp // Example: Driving segments using a Shift Register int latchPin = 8; // RCLK int clockPin = 12; // SRCLK int dataPin = 11; // SER void setup() { pinMode(latchPin, OUTPUT); pinMode(dataPin, OUTPUT); pinMode(clockPin, OUTPUT); } void loop() { // Light up segments one by one for (int i = 0; i < 256; i++) { digitalWrite(latchPin, LOW); shiftOut(dataPin, clockPin, MSBFIRST, i); digitalWrite(latchPin, HIGH); delay(100); } } ```