QUICK OVERVIEW
Manufacturer: Arduino Officials
Operating Voltage (logic level): 5V
8 analog inputs ports: A0 ~ A7
14 Digital input / output ports: TX, RX, D2 ~ D13
1 pair of TTL level serial transceiver ports RX / TX
Using Atmel Atmega328P-AU MCU
There is a bootloader installed in it
Standard 0.1” spacing DIP (breadboard friendly).
Manual reset switch.
Output Channel: 1
Power Supply: 3.3/5V
Built in a potentiometer for sensitivity control.
Onboard signal output indication, output effective signal is high, at the same time the indicator light up, the output signal can directly connect to microcontroller IO.
Detection angle about 60 degrees, the flame spectrum especially sensitive.
The flame of the most sensitive sensors flames, the regular light is also a response, generally used for fire alarm purposes.
QUICK OVERVIEW:
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First test whether any key is pressed down. Connect power to rows, so they are High level. Then set all the rows R1-R2 as Low and then detect the status of the columns. Any column of Low indicates there is key pressing and that the key is among the 4 keys of the column. If all columns are High, it means no key is pressed down. Next, locate the key. Since the column in which the pressed key lies is identified, knowing the line would finalize the testing. Thus, set the rows as Low in turns until any is unveiled accordingly – other rows will still be High.
Now the row can be identified. Detect the status of each column in turns. The column tested Low is the one intersecting with the line – their cross point is just the key pressed.
1 * 2 x 2 Matrix 4 Push Button Keyboard Module
Description:
1. Do not incinerate;
2. Do not disassemble;
3. Do not short positive and negative contacts;
4. Do not expose to heat;
5. Do not completely discharge;
6. Do not use force to install a li-ion battery;
7. Use only high quality battery charger;
8. Charge fully before first use;
9. Store in cold and dry place at approximately nominal voltage.
Description:
1. Do not incinerate;
2. Do not disassemble;
3. Do not short positive and negative contacts;
4. Do not expose to heat;
5. Do not completely discharge;
6. Do not use force to install a li-ion battery;
7. Use only high quality battery charger;
8. Charge fully before first use;
9. Store in cold and dry place at approximately nominal voltage.
Description:
1. Do not incinerate;
2. Do not disassemble;
3. Do not short positive and negative contacts;
4. Do not expose to heat;
5. Do not completely discharge;
6. Do not use force to install a li-ion battery;
7. Use only high quality battery charger;
8. Charge fully before first use;
9. Store in cold and dry place at approximately nominal voltage.
Specifications:- 20×4 Character (Green) LCD Display
Type: 3-Way Handlebar Switch (ON/ON/OFF)
Current Rating: 10A
Mounting Diameter: 22mm (Universal for standard handlebars)
Material: High-quality plastic and metal
Wiring: Pre-wired with insulated connectors
Application: Motorcycles, scooters, ATVs, e-bikes, and other 12V electrical systems
Package Includes: 1 x 22mm Motorcycle Switch
1 x 2S 20A 18650 Lithium Battery Protection Board
| Parameter | Value |
| Model | 2S BMS 8A |
| Over Charge Voltage Range | 4.25-4.35 V ± 0.05 V |
| Over Discharge Voltage Range | 2.5-3.0 V ± 0.05 V |
| Max. Operating Current | 8 A |
| Max. Peak Current | 15 A |
| Charging Voltage | 8.4 V -9 V |
| Quiescent Current | Lower than 10 µA |
| Internal Resistance | <300 mOhm |
| Operating Temperature | -40°C to +50°C |
| Size | 40.5 x 15.6 x 3.5 mm |
| Country of Origin | China |
Female to Female JST Connectors – Direct connection between JST male headers
Standard 3-Pin Layout – Ideal for power and signal wiring
Plug-and-Play Design – No soldering required
Secure Locking Fit – Reduces risk of loose connections
Flexible PVC Insulation – Durable and bend-resistant
High-Quality Copper Core – Ensures reliable conductivity
Compact and Lightweight – Perfect for tight spaces
Reusable and Long-Lasting – Suitable for repeated use
Connector Type: JST Female to Female
Number of Pins: 3 Pin
Pitch: Typically 2.54mm (JST-XH standard)
Conductor Material: Copper
Insulation Material: PVC
Operating Voltage: Suitable for low-voltage DC applications
Application Type: Signal and power interconnection
Arduino and microcontroller projects
Sensor module connections
Robotics and automation wiring
Breadboard and PCB interfacing
LED module connections
Motor driver wiring
DIY electronics projects
Educational STEM kits
This 3 Pin JST female-to-female connector cable offers a clean, efficient, and dependable wiring solution for modern electronics. It simplifies assembly, reduces wiring errors, and provides a professional finish to your projects. Perfect for prototyping, repairs, and production environments where reliability matters.
Female to Female JST Connectors – Direct connection between JST male headers
Standard 3-Pin Layout – Ideal for power and signal wiring
Plug-and-Play Design – No soldering required
Secure Locking Fit – Reduces risk of loose connections
Flexible PVC Insulation – Durable and bend-resistant
High-Quality Copper Core – Ensures reliable conductivity
Compact and Lightweight – Perfect for tight spaces
Reusable and Long-Lasting – Suitable for repeated use
Connector Type: JST Female to Female
Number of Pins: 3 Pin
Pitch: Typically 2.54mm (JST-XH standard)
Conductor Material: Copper
Insulation Material: PVC
Operating Voltage: Suitable for low-voltage DC applications
Application Type: Signal and power interconnection
Arduino and microcontroller projects
Sensor module connections
Robotics and automation wiring
Breadboard and PCB interfacing
LED module connections
Motor driver wiring
DIY electronics projects
Educational STEM kits
This 3 Pin JST female-to-female connector cable offers a clean, efficient, and dependable wiring solution for modern electronics. It simplifies assembly, reduces wiring errors, and provides a professional finish to your projects. Perfect for prototyping, repairs, and production environments where reliability matters.
Original Arduino Nano A000005 
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Arduino Uno R3 CH340G ATMega328PB Development Board Compatible with Arduino 
