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Digital Voltmeter Panel Dc .56 Inch Red Led Bike Car

Operating voltage: 4.5 ~ 30V (with reverse polarity protection function) Test voltage: 0 ~ 99.9V Operating Current:

- 5A Lithium Charger DC-DC Adjustable Step Down Power Supply Module

Description:-

XL4015 module is a 180 KHz fixed frequency PWM buck (step-down) DC/DC module,capable of driving a 0-5A (Max) Adjustable load with high efficiency, low ripple and excellent line and load regulation. Use as a step-down modules with overcurrent protection capabilities.

This module has adjustable output Voltage and Current. Can also be used as a dedicated charger for Lithium Batteries (Li-Ion,LiPo) as it is capable of CC CV

Specifications:-

Input voltage range：4～38VDC(Note:input voltage not exceeding 38V)
Output voltage range：1.25-36VDC adjustable
Output current: 0-5A
Output power: 75W
High efficiency up to 96%
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Input reverse polarity protection: None (if required, high current diode in series with the input).
L x W x H = 5.4*2.3*1.5 CM

Features:-

The DC/DC buck module applications the input voltage is higher than the output voltage of the buck field, such as battery, power transformer, DIY adjustable regulated power supply, LCD Monitor and LCD TV，portable instrument power supply，telecom/networking equipment,24V vehicle notebook power supply,industrial equipment buck.

12V buck to 3.3V, 12V buck to 5V, 24V buck to 5V,24V buck to 12V, 36V buck to 24V etc.

Leonardo R3 Board

Description:-

The Arduino Leonardo is an open source precise microcontroller board based on the ATmega32U4 SMD chip. It has 23 digital input/output pins (of which 7 can be used as PWM outputs and 12 can be used as analog inputs), a 16 MHz crystal, a USB connection, a power jack, an in-circuit system programming (ICSP) header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer (or appropriate wall power adapter) with a Micro USB cable or power it with a AC-to-DC adapter or battery to get started.

The Leonardo differs from all preceding Arduino boards in that the user-programmable ATmega32U4 AVR microcontroller has built-in USB functionality, eliminating the need for a secondary processor. This makes the Leonardo more versatile: in addition to supporting a virtual (CDC) serial/COM port interface, it can appear to a connected computer as a mouse and keyboard.

Specifications:-

Microcontroller: ATmega32u4
Operating Voltage: 5V
Input Voltage:7-12V
Input Voltage (limits): 6-20V
Digital I/O Pins: 14
PWM Channels: 7
Analog Input Channels: 12
DC Current per I/O Pin: 40 mA
DC Current for 3.3V Pin: 50 mA
Flash Memory: 32 KB
SRAM: 2.5 KB (ATmega32u4)
EEPROM: 1 KB (ATmega32u4)
Clock Speed: 16 MHz