5A Adjustable CC/CV Display Step Down charge Module LED Panel Voltmeter Ammeter

5A Adjustable CC/CV Display Step Down charge Module LED Panel Voltmeter Ammeter

Description:      Specification:             Universal receiver.         100% Brand New         Module Properties: non-isolated constant current and voltage module         Rectification: non-synchronous rectification         Input voltage: 5V-32V         Output voltage: 0.8V-30V         Output current: adjustable maximum 5A         Conversion efficiency: 95% (the highest)         Switching frequency: 300KHz         Output ripple: 50mV (max) 20M bandwidth         Load Regulation: ± 0.5%         Voltage Regulation: ± 2.5%         Operating Temperature: -40℃to +85℃         Size: 51 * 26.3 * 14 (L * W * H) (mm)            Voltmeter Ammeter             Measurement accuracy: 0.1%         Refresh rate: about 200ms / times\         Display: 0.28"digital tube         Current Range 0A-5A         Voltage range 5V-30V         Display Color Red           Package Included:                       100% Brand New                           DC 5A 0.8V-30V Constant Current/Voltage LED Driver Step-Down Power Module  x 1

DC 5V to 3.3V Buck Module & Base Resistor Logic level converter for Arduino

Description: 

 

1 On board DC 5V to 3.3V DC-DC Step-Down Power Supply Buck Module,IC AMS1117-3.3;

2 On board 8 channels 5V to 3.3V(also 3.3V to 5V) Logic level converter,base Limiting resistor ;

3  Arduino Breadboard friendly;

4 PCB size:25* 15mm 

 

Level conversion principle:

Between 5V and 3.3V level plus 470 ohm current limiting resistor, to avoid being burned of 3.3V port.

So, when the LOW side no-load, HIGH side plus 5V level,LOW side test is still at 5V level，vice versa.

This is a normal phenomenon, not the level conversion function does not work. 

CY7C68013A-56 EZ-USB FX2LP USB 2.0 Develope Board Module Logic Analyzer EEPROM

• 100% brand new and high quality
• CY7C68013A-56 chip: low-power version of the enhanced 51-core, 16KB program data areas, clocked at 48Mhz, 480Mbps high-speed transmission protocol standards, in line with USB2.0 specification, backward compatible with USB1.1.
  
  Firmware, EEPROM: complete the program in-system programming directly with a USB cable to download the firmware, on-board to provide 16K (24LC128) a large program memory (EEPROM), used as storage VID / PID and the USB firmware, the program space to meet the CY7C68013A need.
  
  All GPIO After 2.54mm standard pin lead out, the great convenience learners expand their own design.
  
  With corresponding firmware can be achieved through the core board logic analyzer function.
  
   

MT8870 DTMF Voice Decoder Controller Module with Arduino UNO DUE MEGA2560 sketch

Package ：(Does not include Arduino UNO/MEGA2560): 1 PCS MT8870 DTMF decoder module; 1 PCS Male to Male audio wire (3.5mm jack ) ; Description:  Onboard Complex Frequency Decoder IC MT8870DS DC Power Supply Voltage：4.5V-5.5V(Typical: 5V) Operating Temperature : -40-+85 °C IO Drive : Current Maximum 10mA. PCB Size : 25.4x25.4MM This decoding module is for mobile and fixed telephone voice dialing decoding function Designed specifically for ARDUINO Board.also use for other MCU(AVR PIC MSP430 STM32 ARM7/9/10/11 FPGA/CPLD) Does not require any wiring, can be inserted directly into the UNO/MEGA2560/DUE board to use. 12 Digital outputs decode mobile and fixed telephone keys (0-9, * #).Another 4 Digital output(ABCD) can use "DTMF Dial" Software control. Arduino uno/mega2560 Code fragment: //*******************************************// #include <FlexiTimer2.h> int STD = A0; int Q1 = A1; int Q2 = A2; int Q3 = A3; int Q4 = A4; .... //Check once every 5 ms void dtmf_decode(void) { .... } void setup() { ..... } void loop() { //Complete the decoding if(Decod_finished) { Decod_finished = 0; Serial.print(" Activate : " ); switch(Q_dat){ case 1 : Serial.print("1 \n" ); break; case 2 : Serial.print("2 \n" ); break; case 3 : Serial.print("3 \n" ); break; case 4 : Serial.print("4 \n" ); break; case 5 : Serial.print("5 \n" ); break; case 6 : Serial.print("6 \n" ); break; case 7 : Serial.print("7 \n" ); break; case 8 : Serial.print("8 \n" ); break; case 9 : Serial.print("9 \n" ); break; case 10 : Serial.print("0 \n" ); break; case 11 : Serial.print("* \n" ); break; case 12 : Serial.print("# \n" ); break; case 13 : Serial.print("A \n" ); break; case 14 : Serial.print("B \n" ); break; case 15 : Serial.print("C \n" ); break; default : Serial.print("D \n" ); break; } ..... //****************************************************************************//         Typical application for Mobile phones:      Typical application for DTMF Dial Software:

315Mhz RF transmitter and receiver kit for Arduino ARM W MCU Raspberry Pi

Receiver module parameters 
1.Product Model: MX-05V
2.Operating voltage: DC5V
3.Quiescent Current: 4MA
4.Receiving frequency: 315MHZ
5.Receiver sensitivity:-105DB
6.Size: 30 * 14 * 7mm
7.External antenna: 32CM single core wire, wound into a spiral

Technical parameters of the transmitter head 
1.Product Model: MX-FS-03V
2.Launch distance :20-200 meters (different voltage, different results)
3.Operating voltage :3.5-12V
4.Dimensions: 19 * 19mm
5.Operating mode: AM
6.Transfer rate: 4KB / S
7.Transmitting power: 10mW
8.Transmitting frequency: 315M
9.An external antenna: 25cm ordinary multi-core or single-core line
10.Pinout from left → right: (DATA; VCC; GND)

Application environment 
Remote control switch, receiver module, motorcycles, automobile anti-theft products, home security products, electric doors, shutter doors, windows, remote control socket, remote control LED, remote audio remote control electric doors, garage door remote control, remote control retractable doors, remote volume gate, pan doors, remote control door opener, door closing device control system, remote control curtains, alarm host, alarm, remote control motorcycle remote control electric cars, remote control MP3.

Remark
1.VCC voltage module operating voltage and good power filtering;
2.Great influence on the antenna module reception, preferably connected to the 1/4 wavelength of the antenna, typically 50 ohm single conductor, the length of the antenna 315M of about 17cm;
3.Antenna position has also affected the reception of the module, the installation, the antenna as possible straight away from the shield, high pressure, and interference source; frequency used to receive, decode and oscillation resistor should match with the transmitter. 

Data Download

Package included：

1x 315Mhz RF transmitter and receiver kit Module for Arduino ARM WL MCU Raspberry

5V Eight 8 Channel Relay Module With Optocoupler For Arduino PIC AVR DSP ARM WW

Features:
100% Brand new and high quality!
This relay module is 5V active low.
It is an 8-channel relay interface board, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc.
It is also able to control various appliances and other equipments with large current.
Relay output maximum contact is AC250V 10A and DC30V 10A.
Standard interface can be directly connected with microcontrollers.
Red working status indicator lights are conducive to the safe use.
Widely used for all MCU control, industrial sector, PLC control, smart home control.

Specifications:
Size: approx. 13.5 x 5.3 x 1.7cm (LxWxH)
Working voltage: 5V
Channel: 8 channel
Color: Blue
Net Weight: 110g

Package Includes:
1PC 5V 8 Channel Relay Module

2 AA 2A Cells Battery Clip Holder Box Case With Wire Lead Black

High Quality Plastic Holder
Battery type: 2 pcs AA
2 AA Battery Holder Case Leads 1.5V X 4 6V Clip Type
For Soldering /Connecting.
Takes 2 standard size AA batteries side by side to form a compact battery
using alkaline batteries, or using NiCd / NiMH rechargeables
Support  2pcs of AA battery
size 5cm x 1.5cm x 3.1cm
weight : 7.5g

MG90S Metal Geared Micro Tower Pro Servo For Boat Car Plane Helicopter 

Item Description:

Features: - Metal Gear - Full Ball Bearing - Light Weight - Less Noise - Connector Wire Length 150mm Specifications: Dimensions: 23 x 12.2 x 29mm Operating Speed (4.8V no load): 0.11sec / 60 degrees Operating Speed (6.0V no load): 0.10sec / 60 degrees Stall Torque (4.8V): 2.2 kg/cm Stall Torque (6.0V): 2.5 kg/cm Temperature Range: - 30 to + 60 degree C Dead Band Width: 10us Operation Voltage: 4.8 - 6.0 Volts Operation Voltage: 4.8 - 6.0 Volts Recommend Model: Mini Car / Mini Ship /Helicopter & Airplane Package Contents: 100% Brand New 1pcs MG90S RC Metal Gear Speed & Torque Micro Servo

MINI USB Nano V3.0 ATmega328P CH340G 5V 16M Micro-controller Arduino M47

Product Summary: CH340G Replace FT232RL Operating Voltage（logic level）：5V 8 analog inputs ports:A0 ~ A7 14 Digital input / output ports:TX,RX,D2 ~ D13 6 PWM ports:D3, D5, D6, D9, D10, D11 1 pairs of TTL level serial transceiver ports RX / TX Using Atmel Atmega328P-AU MCU There is bootloader installed in it Support USB download and Power Support for external 5V ~ 12V DC power supply Support power supply by 9V battery Support ISP download CH340G Driver Download link : http://www.wch-ic.com/download/list.asp?id=126 OR http://www.5v.ru/ch340g.htm IDE of arduino Download link : http://arduino.cc/en/Main/Software

Single Phase SSR 240VAC 25A Opto Isolation 2500 VAC

Salient Features

• Opto Isolation 2500 VAC

 • Zero Voltage Turn On/Random Turn On

 • TTL/CMOS Compatible (Sink mode)

 • Output : NO/NC Configuration

 • Safety cover provision

 • Built-In Snubber

 • Chassis Mountable/DIN

Mountable with Integral heatsink 

• Reverse Voltage Protection

 NEW 10DOF IMU HMC5883L ITG3205 BMA180 BMP085 Sensor module for MWC/arduino

10DOF IMU SENSOR with 3axis gyroscope, 3axis accelerometer, 3axiscompass and barometric pressure sensor

Chips: HMC5883L ITG3205 BMA180 BMP085

Operating voltage: 3-5V

Output format: I2C

magnetic：±0.88/1.3/1.9/2.5/4.0/4.7/5.6/8.1 gauss

accelerator：±2 g/±4 g/±8 g

gyroscope：±250/500/1000/2000 d/s

Atmega328 ATMEGA328P Pro Mini Board Module 5V 16MHz For Arduino

Overview

The Arduino Pro Mini is a microcontroller board based on the ATmega168 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 8 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. A six pin header can be connected to an FTDI cable or Sparkfun breakout board to provide USB power and communication to the board.

The Arduino Pro Mini is intended for semi-permanent installation in objects or exhibitions. The board comes without pre-mounted headers, allowing the use of various types of connectors or direct soldering of wires. The pin layout is compatible with the Arduino Mini.

There are two version of the Pro Mini. One runs at 3.3V and 8 MHz, the other at 5V and 16 MHz.

The Arduino Pro Mini was designed and manufactured by SparkFun Electronics.

Schematic & Reference Design

EAGLE files: arduino-pro-mini-reference-design.zip

Schematic: Arduino-Pro-Mini-schematic.pdf

Summary

Microcontroller	ATmega168
Operating Voltage	3.3V or 5V (depending on model)
Input Voltage	3.35 -12 V (3.3V model) or 5 - 12 V (5V model)
Digital I/O Pins	14 (of which 6 provide PWM output)
Analog Input Pins	8
DC Current per I/O Pin	40 mA
Flash Memory	16 KB (of which 2 KB used by bootloader)
SRAM	1 KB
EEPROM	512 bytes
Clock Speed	8 MHz (3.3V model) or 16 MHz (5V model)

Power

The Arduino Pro Mini can be powered with an FTDI cable or breakout board connected to its six pin header, or with a regulated 3.3V or 5V supply (depending on the model) on the Vcc pin. There is a voltage regulator on board so it can accept voltage up to 12VDC. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.

The power pins are as follows:

• RAW. For supplying a raw voltage to the board.
• VCC. The regulated 3.3 or 5 volt supply.
• GND. Ground pins.

Memory

The ATmega168 has 16 KB of flash memory for storing code (of which 2 KB is used for the bootloader). It has 1 KB of SRAM and 512 bytes of EEPROM (which can be read and written with the EEPROM library).

Input and Output

Each of the 14 digital pins on the Pro Mini can be used as an input or output, using pinMode(), digitalWrite(), anddigitalRead() functions. They operate at 3.3 or 5 volts (depending on the model). Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:

• Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data. These pins are connected to the TX-0 and RX-1 pins of the six pin header.
• External Interrupts: 2 and 3. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details.
• PWM: 3, 5, 6, 9, 10, and 11. Provide 8-bit PWM output with the analogWrite() function.
• SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK). These pins support SPI communication, which, although provided by the underlying hardware, is not currently included in the Arduino language.
• LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.

The Pro Mini has 8 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values). Four of them are on the headers on the edge of the board; two (inputs 4 and 5) on holes in the interior of the board. The analog inputs measure from ground to VCC. Additionally, some pins have specialized functionality:

• I²C: A4 (SDA) and A5 (SCL). Support I²C (TWI) communication using the Wire library.

There is another pin on the board:

• Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on the board.

See also the mapping between Arduino pins and ATmega168 ports.

Communication

The Arduino Pro Mini has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega168 provides UART TTL serial communication, which is available on digital pins 0 (RX) and 1 (TX). The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board via a USB connection.

A SoftwareSerial library allows for serial communication on any of the Pro Mini's digital pins.

The ATmega168 also supports I2C (TWI) and SPI communication. The Arduino software includes a Wire library to simplify use of the I2C bus; see the reference for details. To use the SPI communication, please see the ATmega168 datasheet.

Programming

The Arduino Pro Mini can be programmed with the Arduino software (download). For details, see the reference andtutorials.

The ATmega168 on the Arduino Pro Mini comes preburned with a bootloader that allows you to upload new code to it without the use of an external hardware programmer. It communicates using the original STK500 protocol (reference, C header files).

You can also bypass the bootloader and program the ATmega168 with an external programmer; see these instructionsfor details.

Automatic (Software) Reset

Rather then requiring a physical press of the reset button before an upload, the Arduino Pro Mini is designed in a way that allows it to be reset by software running on a connected computer. One of the pins on the six-pin header is connected to the reset line of the ATmega168 via a 100 nanofarad capacitor. This pin connects to one of the hardware flow control lines of the USB-to-serial convertor connected to the header: RTS when using an FTDI cable, DTR when using the Sparkfun breakout board. When this line is asserted (taken low), the reset line drops long enough to reset the chip. The Arduino software uses this capability to allow you to upload code by simply pressing the upload button in the Arduino environment. This means that the bootloader can have a shorter timeout, as the lowering of the reset line can be well-coordinated with the start of the upload.

This setup has other implications. When the Pro Mini is connected to either a computer running Mac OS X or Linux, it resets each time a connection is made to it from software (via USB). For the following half-second or so, the bootloader is running on the Pro. While it is programmed to ignore malformed data (i.e. anything besides an upload of new code), it will intercept the first few bytes of data sent to the board after a connection is opened. If a sketch running on the board receives one-time configuration or other data when it first starts, make sure that the software with which it communicates waits a second after opening the connection and before sending this data.

Physical Characteristics

The dimensions of the Pro Mini PCB are approximately 0.7" x 1.3".