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MAX7219 is an integrated serial input / output common-cathode display driver, it connects the microprocessor 7-segment digital LED display with 8 digits, you can also connect a bar graph display or 64 independent LED. Thereon including a B-type BCD encoder chip, multi-channel scanning loop segment word driver, but also a static RAM 8 * 8 for storing each data. Only one external register is used to set the segment current of each LED.
A convenient four-wire serial interface can be connected to all general-purpose microprocessor. Each data can be addressed in the update do not need to rewrite all of the display. MAX7219 also allows each user to select a data coding or non-coding.
The entire device contains a 150μA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display data bits 1-8, and one for all LED luminescence detection mode.
It requires only three IO ports to drive a dot matrix! No flicker when the dot matrix display! Support cascading!
Parameters:

1. A single module can drive a total of 8 * 8 dot matrix overcast
2. Working voltage: 5V
3. Size: *12.8 cm*3.2 cm *1.3 cm (L*W*H)
4. With 64 fixing screw holes, diameter 3mm
5. module with input and output interfaces, support for cascading multiple modules
Wiring instructions:

1. The left side of the module as an input port, an output port on the right.
2. If a single control module, simply input port connected to CPU
3. cascading multiple modules, input and output termination CPU, input the output end of the second module of the first module, the first two modules of the first three input termination module, and so on. ..
51 microcontrollers, for example:
VCC → 5V
GND → GND
DIN → P2.2
CS → P2.1
CLK → P2.0
Shipping list:
1.MAX7219 dot matrix module (tested well)
2.20CM Dupont line*5P

Module parameters
Module nature: synchronous rectification, non-isolated step-down constant current constant voltage module, CC CV charging module
Scope of application: high-power LED constant current drive, lithium battery charging (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride battery (battery pack) charging, solar panels, wind generators
Input voltage: 6-40VDC
Output voltage: Continuously adjustable (1.2-35VDC) for a long time below 32V (applicable to applications where the input voltage is higher than the output voltage and cannot be boosted)
Output current: Maximum 20A, within 15A for a long time (the power tube temperature exceeds 65 degrees, please add a fan to dissipate heat, high voltage output, please use derating)
Current limit range: 0.2-20A (regulation) module, please add a fan if it exceeds 65 degrees.
Minimum pressure difference: 3V
Working frequency: 150KHZ
Conversion efficiency: up to about 96% , the efficiency is related to the pressure difference and the use environment
Output ripple: Ripple around 50mV (no noise) 20M bandwidth (for reference only) 24V input measured
Working temperature: -10°C to 75°C) (Please pay attention to the temperature of the power tube in actual use, and if the temperature is too high, please strengthen the heat dissipation or derate the use)
Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease)
Output short circuit protection: Yes (instantaneous protection) constant current (currently set constant current value can not be short-circuited for a long time)
Input reverse connection protection: None,
Output anti-backflow: None, for the load self-charged or inductive load requires an additional 2-pole tube!
Wiring mode: terminal block
Module size: 60*53*30MM
Output current adjustment method:
1. Adjust the CV potentiometer and set the output voltage to the voltage value you need according to your load requirements.
2. Set the CC potentiometer counterclockwise for about 30 turns (that is, set the output current to the minimum), connect the LED, and adjust the CC potentiometer to the current you need. For battery charging, after the battery is discharged, connect to the output and adjust CC to the current you need. (When charging, you must use the discharged battery to adjust, because the battery has more power More, the smaller the charging current.

Description
GPS module NEO-6M, 3V-5V power supply universal
Model: GY-GPS6MV2
The module is equipped with a ceramic antenna with super strong signal
EEPROM power-off saves configuration parameter data
With data backup battery
With LED signal indicator
Antenna size 25*25mm
Module size 25mm*35mm
Installation aperture 3mm
Default baud rate: 9600
Compatible with various flight control modules and provide GPS computer test software

Description
Input voltage range : 3-35V DC
Output voltage range : 3.5-35v DC
Efficiency : 96.7% (max)
Output current : 6A(max)
Voltmeter range:4 to 40V,error -0.1v
L * W * H = 6.7 x 4.3 x1.2 cm(approx.)
When adjust the blue potentiometer ,please use a multimeter to monitor the voltage
Rotating Clockwise can rise the voltage while rotating counterclockwise could lower the voltage
When the module output voltage can not be adjusted ( the output voltage is always equal to the input voltage ) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.

Description
GPS modules NEO-6M, 3V-5V power supply Universal

Model: GY-GPS6MV2

Destined module with ceramic antenna, signal super

Save the configuration parameter data EEPROM Down

With data backup battery

There are LED signal indicator

Antenna size 25 * 25mm

Module size 25mm * 35mm

Installation aperture 3mm

Default Baud Rate: 9600

Compatible with various flight control modules that provide GPS computer test software

Description
This is our BlackBerry trackball breakthrough board. The four spindle trackballs have a small round magnet at the end; each of these paired SMD Hall effect sensors is used to measure the up, down, left and right movement of the trackball. A patch momentary switch is placed on the trackball to give you a selection switch. The button will be pulled down when the switch is pressed.

The trackballer also includes 4 LED lights: red, blue, green and white. These clear trackballs can be light in any color you can imagine.

All functions are broken with a 0.1" pitch head. 2.5-5.25vdc power adjustment, must provide power Hall sensor. Trackball attached with strong calcium glue. The board is shown in the picture, and all components are filled.

The combination of Hall effect sensor and trackball is surprisingly sensitive. A slight roll of the trackball will create multiple high/low transition four-axis pins, easily picking up any microcontroller and basically adding a mouse to your project to choose from. A trackball that rotates 360° along an axis will result in a high/low transition of about 9.
parameter
Working voltage: 2.5-5.25v
PCB board size: 22×28mm

Product Description
This is a great DC to DC step-up power supply module for electric equipment, digital products, etc.
Input and output are designed with screw terminals for convenient wire connection and disconnection.
There is a heat sink on board that would ensure a better heat dissipation.
Designed with USB and 2.5A large current output, can identify resistance and charge several phones at same time.
It can also be used as a power supply for laptops or voltage regulator for solar panels.

Specification:
Input Voltage: DC 3 -35V
Output Voltage: DC 5 -45V
Input Current: 5A(Peak)
Voltage Display Range: 5 -30V(if input voltage is lower than 4.5V, it will not display)
Voltage Display Error: ±0.1V
Size: 72*48*16mm / 2.83*1.89*0.63"
Note:
1This is a boost module so output voltage should be higher than input voltage.
Peak output current is less than 5A.
This kit requires professional knowledge and ability, please make sure you know how to use it.
Instruction:
1. Connect the module to power supply (4.5-40V), the input indicator light is on, and module is working normally.
2. Adjust the blue potentiometer knob (generally turn clockwise to step up and turn counterclockwise to step down) and check the output voltage with a multimeter until it meets requirement.
3.If the output voltage of the module can not be adjusted, which means it is always equal to the input voltage, please turn the potentiometer counter-clockwise for several circles then the voltage can be adjusted normally.
Package Include:
1 x XH-M411 DC-DC 3 -35V to 5 -45V 5A Step Up Converter Boost Power Supply Board

Product Description
4 Channel Solid State Relay5V solid state relays 240V 2A, output with resistive fuse 240V 2A.
Input power supply: 5V DC (160MA)
Input control signal voltage:
0-2.5V low state relay 
Blue KF301 terminal connection control line is more convenient.
Module interface:
DC  : positive power supply (by relay voltage power supply)
DC-: connect power negative
CH: Relay Module signal triggering end (Low level trigger effective)
Note: Power must be DC voltage and need to be consistent with the voltage relay.

Description:
The TB6612FNG motor driver can control up to two DC motors at a constant current of 1.2A (3.2A peak). Two input signals (IN1 and IN2) can be used to control the motor in one of four function modes - CW, CCW, short-brake, and stop. The two motor outputs (A and B) can be separately controlled, the speed of each motor is controlled via a PWM input signal with a frequency up to 100kHz. The STBY pin should be pulled high to take the motor out of standby mode.

Logic supply voltage (VCC) can be in the range of 2.7-5.5VDC, while the motor supply (VM) is limited to a maximum voltage of 15VDC. The output current is rated up to 1.2A per channel (or up to 3.2A for a short, single pulse).

Board comes with all components installed as shown. Decoupling capacitors are included on both supply lines. All pins of the TB6612FNG are broken out to two 0.1" pitch headers; the pins are arranged such that input pins are on one side and output pins are on the other.
Features:
· Power supply voltage: VM=15V max, VCC=2.7-5.5V
· Output current: Iout=1.2A(average) / 3.2A (peak)




· Standby control to save power

· CW/CCW/short brake/stop motor control modes
· Built-in thermal shutdown circuit and low voltage detecting circuit
· All pins of the TB6612FNG broken out to 0.1" spaced pins
· Filtering capacitors on both supply lines
Dimensions: 0.8x0.8

1.Description:
DY-SV5W is an intelligent voice module developed by the division independently. It integrates I/O subsection triggering, UART serial port control, ONE_line single bus serial port control. Onboard 5W Class D amplifier circuit and can directly drive 4ohm 3~5W speakers.Support MP3,WAV decoding format. Max support 32Gbit(4MByte) TF card memory, can connect the computer to update TF card to store audio files via USB cable.3.5mm audio interface, U disk interface,Micro USB download interface, button module in one module
2.Features:
1>.Support MP3 and WAV decoding format.
2>.Support sampling frequency (KHz) : 8/11.025/12/16/22.05/24/32/44.1/48.
3>.24-bit DAC output, dynamic range support 90dB, SNR support 85dB.
4>.Support the FAT16/FAT32 file system, with the maximum support 32Gbit(4MByte) TF card and 32Gbit(4MByte) U-disk.
5>.Support UART serial port control voice broadcast function.It can control playback, pause, selections, turn up and down volume and other functions, the largest selection of 65535 songs.The baud rate is 9600 bit/s.
6>.Support I/O trigger function, 8bit I/O ports can trigger 8 musics or 8 I/O combinations to trigger 255 songs.
7>.Support One_line single bus serial port control, which can control playback, pause, selection, turn up and down volume and other functions.
8>.Support 3 configuration I/O for mode selection to make 7 work mode.
9>.Built in 5W Class D amplifier circuit and can directly drive 4ohm 3~5W speaker.
3.Parameters:
1>.Product Name:DY-SV5W Voice Playback Module
2>.Product Number:DY-SV5W
3>.Work Voltage:DC 5V
4>.Working Temperature range:-20~85 Celsuis
5>.Working Humidity range:0% -95% RH
6>.Size :40*40*9mm
4.Package:
1>.1pc DY-SV5W Voice Playback Module

Product Description :
1. This power amplifier board adopts imported original YD138-E chip, the chip has the characteristics of over-current protection, thermal protection, noise reduction and so on.
2. Wide voltage working range, DC 9-14V, current 2A and above can work normally.
3. Powerful power, large dynamic range, as small as cricket screams, as large as cannon sounds, can perform very well, with little distortion. 8 ohm load is 2*8W, 4 ohm load is 2*12W.

Product parameters:
Working mode: Class D (automatic arterial width modulation type)
Chip model: YDA138-E
Recommended voltage: 12V1.5A
Channel type: dual channel
Sex to noise ratio: 92%
Output power: 8W 8W (8 ohm speaker) 12W 12W (4 ohm speaker)
Product size: 58*36*21MM (excluding the protruding part of the potentiometer)

Description
Temperature: -40~80°C (±0.5°C)
Humidity: 0-99.9% RH (±2% RH)
Shipping list:
1.Long female pins x2pcs
2.Short female pins x2pcs
3.Normal pins x2pcs
4.DHT Pro Shield x1pcs

Specification:
Measuring distance: 4 to 50 cm
Output: Digital (I/C) / Analog Output
Sensor: Infrared LED and CMOS image sensor
Built-in signal processing circuit
Voltage operation: 2.7V-5V
Size: 16.7 × 11 × 5.2mm
Features:
- High precision measurement
- Digital (I/C) / analog output type
- CMOS integrated combination
- Image sensor and infrared LED.
- The change of the reflectivity of the object, the ambient temperature and the running time are not easily affected by the distance detection.
- Due to the triangulation method, the device output corresponds to the detected distance and digital (I-C) data. Therefore, the sensor can also be used as a proximity sensor.
Applications:
1. Cleaning robot
2. Humanoid robotA
3. Non-contact switch (sanitary equipment, illuminance control, etc.)
4. Energy-saving sensors (ATM, copiers, LCD monitors, etc.)
5. Amusement equipment (robot, game console, etc.)

Specifications:
Model: ESP8266
Color: Green
Size(L*W*H):65 x 40 x 18 mm
ISM: 2.4 GHz
PA: 25 dBm
Relay voltage: 220 V
Relay Current: 10 A
Input voltage: DC 7 V~30 V
Input overvoltage protection: Yes
Input overcurrent protection: Yes
Features:
1.More safe with relays PCB pin anti-climb design.
2.With ESP8266 Wifi module,4-layers board design.
3.One output status indicator, one input status indicator.
4.220V 10A relay, one normally open, one normally closed.
5.One way optocoupler isolation input, TVS input protection.
6.Access control server via TCP CLIENT mode Via HTTP protocol control.High-current terminals.
7.Input overvoltage protection, input with TVS, when voltage exceeds 33V, automatic protection will operate.

Product Description
1: Working voltage: DC 9V--36V;

2: With input reverse connection protection, output short-circuit protection;

3: Output voltage: 5.2V/5A/25W (total output current of 4 ports)

4: Output capacity:

9~24V input: output 5.2V/6A/30W

24~32V input: output 5.2V/5A/25W

32~36V input: output 5.2V/3.5A/18W

5: Size: 70*40*30cm (length*width*height)

Description
In various bridge circuit, in order to adjust the bridge balance, the potentiometer must be adjusted many times, can the balance bridge, during use, when the potentiometer is subjected to vibration, shock, temperature, humidity and other external environmental factors, the potential of the location and parameters will change, causing the system to change the index, for the system to reach the status quo, must be adjusted, which caused a lot of inconvenience to use, for the bridge arm circuit using an array of potentiometers and digital technology, not only to overcome the above drawbacks, but also can greatly improve the accuracy of the system. X9C104 100 order digital potentiometer, specifically X9C102 / 103/104/503 series, the resistance in the range of 40R ~ 100K, X9C104 contains 99 internal resistor arrays, there is slid in between each unit and the two endpoints tap access point unit, the position of the slide unit by the CS, U / D and INC three inputs control, but a location is selected, can be stored in non-volatile memory and can be recalled after the power on next time. Digital potentiometer changes are stepped or incremental change in resistance changes linearly. For example X9C104, resistance range 40R ~ 100K, divided into 100 bands, the incremental point for each tap 1010R. Temperature compensation function: resistance error endpoints: ± 20% ; wiper position data can be stored for long periods, the time for 100 years; resistance higher resolution: 1% .

1. Working voltage (V): 5

2. Total resistance (kΩ): 100

3. The terminal voltage (V): -5 ~ 5

4. The number of taps: 100

5. Interface: CS, U / D, INC

6. The increase in resistance mode: Linear

7. Operating Current (mA): 3

8. Package / Temperature ('c): 8SOIC / -40 ~ 85

9. Description: tap position automatic storage

Description:
L298P Shield DC motor driver adopts the L298P driver chip wich is exclusively made for large-power motor. It can drive 2 DC motors directly with a drive current reaching 2A. The motor output is equipped with eight high-speed schottky diode as protection. This driver carries neat circuit layout and bonded components, in addition, the multi-layer design enables it to be plugged to Arduino directly.
L298P Shield DC motor driver carries PWM and PLL modes and the mode is switchable by jumpers. The motor can be powered via Arduino VIN input or terminal input on the driver, which are switchable by jumper.
Specification:
Logic part input voltage : VD: 5V
Driving part input voltage VS: VIN input 6.5~12V, PWRIN input 4.8~24V
Logic part working current Iss: ≤36mA
Driving part working current Io: ≤ 2A
Maximum dissipation power: 25W (T=75℃)
Control signal input level: High level: 2.3V ≤ Vin ≤ 5V Low level: -0.3V ≤ Vin ≤ 1.5V
Working temperature: -25℃ -130℃
Driver form: Dual power H bridge driving
Package Included:
1 * L298P Motor Driver Shield

Product Description
This fully-featured UDA1334A I2S Stereo DAC breakout is a perfect match for any I2S-output audio interface. 3.3V - 5V logic levels (a rarity), and can process multiple different formats by setting two pins to high or low. The DAC will process data immediately, and give you a clear, analog, stereo line level output. It's even cool with MCLK-less I2S interfaces such as the Raspberry Pi (which it's ideal for) - a built in PLL will generate the proper clock from the incoming signal. For inputs, you can use classic I2S (the default) or 16-bit, 20-bit or 24-bit left justified data. You can set it up to take an input system/master clock but we default-set it to just generate it for you, so you only need to connect Data In, Word Select (Left/Right Clock) and Bit Clock lines. If you want, there's a mute pin and a de-emphasis filter you can turn on.

Product Description
The TSL2561 is an optical-to-digital converter that converts light intensity into a digital signal output with a direct I2C connection or SMBus interface. Each device is connected to a bandwidth photodiode and an infrared responsive photodiode on a separate CMOS integrated circuit that has the ability to provide a near-optical response of a 20-bit dynamic range. Two integrated ADCs convert the photocurrent into a digital output that represents the measurement of the illumination of each channel. This digital output can be the input of a microprocessor.

The TSL2561 is a high-speed, low-power, wide-range, programmable and flexible configuration of light intensity digital conversion chips. The chip can be widely used in the monitoring of various types of displays, in order to make the display provide the best display brightness and reduce the power consumption of the power supply under variable lighting conditions. It can also be used for street lighting control and security lighting. Many occasions. The main features of the chip are as follows:
1. The upper and lower thresholds of the light intensity of the programmable configuration permit, and an interrupt signal is given when the actual illuminance exceeds the threshold;
2. Digital output conforms to the standard SMBus (TSL2560) and I2C (TSL2561) bus protocols;
3. Analog gain and digital output time programmable control;
4. In low power mode, the power consumption is only 0.75 mW
5. Automatically suppress light fluctuations of 50 Hz/60 Hz.

Product Description
SI5351 High Frequency Signal Square Wave Frequency Generator Signal Generator 5351 Si5351A
Never hunt around for another crystal again, with the Si5351A clock generator breakout ! This chip has a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from <8KHz up to 150 MHz.
The Si5351A clock generator is an I2C controller clock generator. It uses the onboard precision clock to drive multiple PLL's and clock dividers using I2C instructions. By setting up the PLL and dividers you can create precise and arbitrary frequencies. There are three independent outputs, and each one can have a different frequency. Outputs are 3Vpp, either through a breadboard-friendly header or, for RF work, an optional SMA connector.
We put this handy little chip onto it's own breakout board PCB, with a 3.3V LDO regulator so it can be powered from 3-5VDC. We also put level shifting circuitry on the I2C lines so you can use this chip safely with 3V or 5V logic.
Best of all, we even have a great tutorial and library to get you started! Our code is designed for use with the Arduino microcontroller and IDE but is easily ported to your favorite platform with I2C support

Product Description
After the output voltage (any value of 1.25V-26V) is determined, it has nothing to do with the input voltage (input any value of 3.5V-28V), and the module will automatically increase and decrease the voltage.
Adapt to solar panels! Brand new masterpiece! ! Wide voltage DC-DC buck-boost module
LM2577S LM2596S dual chip!
Appearance size length * width * height 5.3cm*3.8cm*1.5cm (with fixed column)
Boost mode: input 3.5-28V output 1.25V-26V
The output voltage has nothing to do with the input voltage (input any value of 3.5V-28V, output any value of 1.25V-26V)
Buck mode:
The current input is three amps, and the output is three amps.
Rated input 1A, output 1A
Note: Because the switching frequency is low, the inductor will have some high-frequency noise when the input current is large, which does not affect the use

Description
This driver uses Infineon chips BTS7960 composed of high-power drive full H-bridge driver module with thermal over-current protection. Double BTS7960 H-bridge driver circuit, with a strong drive and braking, effectively isolating the microcontroller and motor driver! High-current 43A
Features:
Double BTS7960 large current (43 A) H bridge driver;
5V isolate with MCU, and effectively protect MCU;
5V power indicator on board;
voltage indication of motor driver output end;
can solder heat sink;
Just need four lines from MCU to driver module (GND. 5V. PWM1. PWM2);
isolation chip 5 V power supply (can share with MCU 5 V);
size: 4 * 5 * 1.2 cm;
Able to reverse the motor forward, two PWM input frequency up to 25kHZ;
two heat flow passing through an error signal output;
isolated chip 5V power supply (can be shared with the MCU 5V), can also use the on-board 5V supply;
the supply voltage 5.5V to 27V;

Product Description
Input: 6.5V-60V
Output: 1.25-30V adjustable
Efficiency: 97% (MAX)
Module size: L75mm * W21mm * H16mm
Operating temperature: -40 ° - 85 °
Maximum 7A, within 5A for long-distance running, strengthen heat dissipation above 5A
Output power: max 100W
Wiring: Terminals are free of soldering, IN is input, OUT is output

Package included:
1x 60/48/36/24V to 19/12/9/5/3V Car Charger Regulator Power Supply Adjustable Module

Description
Input Voltage:DC 6-60V
Display Accuracy:0.1V
Control Accuracy:0.1V
Output Type:direct output
Voltage Tolerance:±0.1V
Apply For:6-60V MAX 80V battery
Dimension:81*54*18mm
Use: In the setting voltage value, start button play button raised, about stop button role to down key

1. Set the start voltage:
Normal display voltage state, press to a starting voltage button ,to display the start charging voltage. long Press the start button, digital flashes, by start and stop button, set the start charging voltage value.

2. Set Stop voltage:
Normal Voltage normal display mode, press to a Stop voltage button ,to display the Stop charging voltage. long Press the Stop button, digital flashes, by start and stop button, set the Stop charging voltage value.

3. Setting Error:
Energized state while holding down the start / stop button, digital display 888, which is the factory setting.


Package Included:


1 x Digital display Lead acid Battery Charge Control Module

Description:
XH-M603 Charging Control Module 12-24V Storage Lithium Battery Charger Control Switch Protection Board
Product Introduction:
1.Model:XH-M603
2.Input Voltage:DC 10-30V
3.Display Precision:0.1V
4.Control Precision:0.1V
5.Output Type:direct output
6.Voltage Tolerance: /-0.1V
7.Application Fields:12-24V storage battery
8.Size;82*58*18mm


Using Method:


1.Set Starting Voltage:in normal display voltage state,press the button will display start charging voltage;long press for 3s the digital tube will flash;you can start or stop button to set starting up charge voltage value

2.Set Stop Voltage:in normal display voltage state,press the button will display stoping charge voltage;long press the button for 3s the digital tube will flash;you can start or stop button to set stoping charge voltage value

3.Factory Reset:in power on state press the start/stop button at the same time,digital tube will display 888;that represents factory reset settings


Package Included:


1× DC12V-24V Lithium Battery Charge Control Protection Board /w LED Display XH-M603

1. Onboard voltage, current, power meter, you can easily use this module without a multimeter, which is more convenient and intuitive.
2. The onboard USB interface can easily charge your digital products. (Note: The USB output voltage is the same as the module output voltage, not a fixed 5V output, please confirm before charging the USB device)
3. High power, high efficiency, 5A, low ripple;
4. Three major functions:
(1) Use as an ordinary step-down module with over-current protection capability;
(2) Used as a charger for various voltage values of lithium batteries, batteries, nickel-cadmium nickel-metal hydride batteries (battery packs), used in solar panels, wind generators and other occasions;
(3) Use as a high-power LED constant current drive module;
5. With two modes of constant voltage and constant current, there are indicators to indicate which mode the module is currently in;
6. When used as a lithium battery charger, the float voltage and charging current can be set, and an indicator light indicates
Indicates whether it is charging or fully charged;
7. With current-limiting protection function, the module will not be burnt out even if the output is short-circuited.
8. The onboard voltage and ammeter can be self-calibrated, and there will never be inaccurate problems!
9. With heat sink, free copper pillar!
Module parameters
Input voltage: 5-36V
Output voltage: 1.25-32V continuously adjustable
Output current: adjustable, maximum 5A (recommended to use within 4.5A)
Output power: maximum 75W (recommended to use within 50W, please reduce the power when using large pressure difference)
Working temperature: -40~ 85 degrees
Working frequency: 180KHz
Conversion efficiency: up to 96%
Short circuit protection: Yes
Over-temperature protection: Yes (automatically shut down the output after over-temperature)
Input reverse connection protection: None, (if necessary, please insert a high-current diode in series in the input)
Installation method: 4 3mm screws
Wiring mode: wiring terminal or welding terminal, V-IN is input, V-OUT is output
Module size: length 68.2mm width 38.8mm height 15mm
Weight: 39g
Scope of application
1. Use as an ordinary step-down module with over-current protection capability
Instructions:
(1) Press the button on the right to adjust the digital meter to the [Display output voltage] interface, and adjust the "constant voltage potentiometer" to make the output voltage reach the voltage value you want;
(2) Adjust the digital meter to the [Display output current] interface, and directly short-circuit the output terminal of the module (just find a thick wire to short-circuit the output terminal), at this time adjust the "constant current potentiometer" to make the The current value reaches the preset overcurrent protection value; (for example, the current value displayed by the on-board ammeter is 4A, then the maximum current of the module is limited to 4A, and the red indicator light is on when the current reaches 4A)
(3) Connect the load and work.
2. Use as a battery charger
The module without the constant current function cannot be used to charge the battery. Because the voltage difference between the exhausted battery and the charger is large, the charging current is too large and the battery is damaged. Therefore, the battery must be constant at the beginning. Current charging, when the charging reaches a certain level, it will automatically switch back to constant voltage charging.
Instructions:
(1) Determine the floating voltage and charging current of the battery; (If the lithium battery parameter is 3.7V/2200mAh, then the floating voltage is 4.2V, and the maximum charging current is 1C, which is 2200mA)
(2) Under no-load conditions, adjust the digital meter of the module to the [Display output voltage] interface, and adjust the "constant voltage potentiometer" to make the output voltage reach the float voltage;
(3) Adjust the digital meter to the [Display output current] interface, and directly short-circuit the output terminal of the module (just find a thick wire to short-circuit the output terminal), at this time adjust the "constant current potentiometer" to make the The current value reaches the preset charging current value;
(4) The default charging current of the rechargeable lamp is 0.1 times the charging current; (The current of the battery is gradually reduced during the charging process, and gradually changes from constant current charging to constant voltage charging. If the charging current is set to 1A, then when the charging current is set to 1A, When the charging current is less than 0.1A, the blue light is off and the green light is on, and the battery is fully charged at this time)
(5) Connect the battery and charge it.
(Steps 1, 2, 3, 4 are: the input terminal is connected to the power supply, and the output terminal is not connected to the battery without load)
3. Use as LED constant current drive module
(1) Determine the operating current and maximum operating voltage you need to drive the LED;
(2) Under no-load conditions, adjust the digital meter to the [Display output voltage] interface, and adjust the "constant voltage potentiometer" to make the output voltage reach the LED operating voltage;
(3) Adjust the digital meter to the [Display output current] interface, and directly short-circuit the output terminal of the module (just find a thick wire to short-circuit the output terminal), at this time adjust the "constant current potentiometer" to make the The current value reaches the preset LED working current;

(4) Connect the LED and test the machine.
(Steps 1, 2, and 3 are: the input is connected to the power supply, and the output is no-load without the LED light)

Product parameter
1. Power supply: USB 5V
2. Transmission distance: 1200 meters (under 9600bps conditions)
3. Chip solution: CH340
4. Communication protocol: pure hardware equipment, not restricted by protocol
5. Baud rate: 921600bps, supporting mutual transmission supports higher baud rate
6. Protection: TVS transient suppression protection, electrostatic ESD protection, surge protection, AB signal line short-circuit and short-circuit protection with the power supply (short-circuit does not burn)
7. Temperature range: -40℃-80℃
8. Provide external 5V power supply with fuse for current limiting
9. Support system: support hot swap, support win98/CE/2000/2003/2008/XP/WIN7/WIN8/WIN10/VISTA/LINUX/MAC OS X system, USB interface can be hot swapped
10. Automatically identify and control the data transmission direction, without any handshake signals (such as RTS, DTR, etc.) without jumper settings to achieve mode conversion, to ensure compliance with the existing communication software and interface hardware.
11. Size: length, width and height 70*27*13mm

Description:
This is a breakout board for the Silicon Laboratories Si4703 FM tuner chip. Beyond being a simple FM radio, the Si4703 is also capable of detecting and processing both Radio Data Service (RDS) and Radio Broadcast Data Service (RBDS) information. The Si4703 even does a very good job of filtering and carrier detection. It also enables data such as the station ID and song name to be displayed to the user.


Using this board we are able to pick up multiple stations just as well as with a standard FM radio.
The board breaks out all major pins and makes it easy to incorporate this great chip into your next radio project. Also, by plugging headphones into the 3.5mm audio jack,
you effectively use the cable in your headphones as an antenna!
Therefore, this board does not require an external antenna if using headphones or
a 3.5mm audio cable longer than 3 feet.


Package Included:

1 x Breakout Board Si4703 FM RDS Tuner For AVR ARM PIC

Features:
100% Brand new and high quality.
Item name: 0.95 inch SPI OLED Display
Resolution:96*64
Color: 65536 Colors
Driver IC:SSD1331
Definition of SPI Connector:
1.GND-Gound
2.VCC-Positive Voltage
3.SCL-Clock Line
4.SDA-Data Line
5.RES-Reset
6.DC-Data/Demand
7.CS-Chip Select

Package Included:
1 X 0.95 inch Full Color SPI OLED Display

Specifications:
Temp:-50 ~80
Cycle time >100000 times
Quantity: 250pcs/1 Set
Features:
Long life span, durable.
Wide application.
Brand new and high quality.
Used in the fields of electronic products, household appliances and more.
This light touch switch is waterproof, prevent oil, anti-pollution, anti-static interference.
Good electrical Conductivity.
Compact and light weight, easy to carry and dismantling.
Applications: TV, Audio equipment, Video recorders, Cameras, Computers, Game consoles, Fax machines,Walkie-talkie, Batons, Machine tool control unit, Photocopying,Printers
Size:
25pcs x 3*4*2.5(bind feet)
25pcs x 3*4*2.5(white)
25pcs x 3*6*4.3(white pin)
25pcs x 3*6*5(white pin)
25pcs x 3*4*2 (2 feet, Yellow)
25pcs x 3*3.5*2 (4 feet, black)
25pcs x 4*4*1.5(4 feet, black&yellow)
25pcs x 4*4*0.8H(4 feet, black&yellow)
25pcs x 3*6*2.5(2 feet,black&white)
25pcs x 3*6*3.1H(4 feet, black&red)
Package includes: (10types , 25PCS/type each )
1x 250pcs Button Switch with Box
Note:
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
Item specifics:
Item type: Switches
Model number: ESFWR43
Features: Button switch
Switch type: Touch On/Off Switch
Material: Plastic
Quantity: 250pcs/1 Set

Descriptions:
1. Output voltage: 2-4 series lithium battery or lithium iron phosphate battery (can be adjusted by external resistance).

Suitable for 2-4 series lithium battery or lithium iron phosphate battery
Lithium battery 4.2*2 string = 8.4V
Lithium battery 4.2V*3 string = 12.6V / 4.2V*4 string = 16.8V
Iron lithium battery 3.6V*3 string = 10.8V / 3.6V*4 string = 14.4V
2. Solar cell maximum power point tracking (MPPT) is to ensure that the light intensity changes, the photovoltaic cells have been the maximum output power to take full advantage of solar energy. In general, it is necessary to use the switch mode DC-DC converter to achieve MPPT function, to maintain the output voltage and charge current product (output power) to maximize.
3. CN3722 is the use of switching buck mode DC-DC conversion way to achieve the maximum power point tracking function of photovoltaic cells, the input voltage up to 25V, very suitable for input voltage and battery voltage difference between the relatively large applications.
Features:
High-end technology MPPT solar maximum power tracking charge management chip, with trickle, constant current, constant voltage charging management.
The use of imported high-frequency low-conduction resistance double MOS tube, high current diode, high efficiency flat high-power inductors, alloy current detection resistor.
The large aluminum cooling fin at the bottom, ensure it keep stability working at the high current.
High-speed and efficient way of charging, heat small, fast.
Dual status indicator light, no battery when the red light flashes green light is always on, charging red light, full of self-stop while the green light.
Specifications:
Input voltage: 18V nominal solar panels (no load about 21V solar panels)
Output voltage:Output voltage: 2-4 series lithium battery or lithium iron phosphate battery (can be adjusted by external resistance)
Output current: maximum constant current 3A (Charge current > 2A, please add heat dissipation)
Wiring method: Welding plate
IN : input positive, IN - : input negative (SOLAR)
BAT : battery positive, BA-: battery negative
Size:45* 31mm/1.92*1.22inch

Description:
1.fully support of MACH3 and other computer software support for parallel port control.
2.USB power supply and peripherals powered phase separation to protect computer security.
3.peripheral wide voltage input,12-24V.and anti-reverse function.
4.all of the input signal.all the light lotus isolated.which can be accessed emergency stop on the knife.the limit to protect computer security.
5.all the way to the relay output port.control spindle switch. Output port P17 mouth.
6.all the way through the optocoupler isolated 0-10V analog voltage output can be controlled with the corresponding analog interface converter to control the spindle speed. Output port P1 port.
7.open all 17 ports.which can be accessed with the optocoupler drive.5-axis stepper motor can be controlled.
8.P1 as PWM outputs can be controlled with optocoupler input spindle governor.
9.can be accessed by a common cathode or common anode input level to 5V drive.

Package Included:
1 x 5 axis CNC Breakout Board with optical coupler for Stepper Motor Driver MACH3
1 x USB cables

Specification:
The sound quality is very good using this module.
Mono digital audio amplifier chip.
High output and low power consumption.
Applicable speaker impedance: 4-8 ohms (8 ohms is the best).
Product specification:
Operating voltage: DC8-24V
Output power: 60W
PCB board size: 45*35mm/1.77*1.4in
Weight: 12g/0.43oz

Product Description
This board is a STM32F030F4P6 Minimum System Board(Cortex-M0). The target MCU is STM32F030F4P6 that is provided by ST. It is a ARM 32-bit Cortex?-M0 CPU, frequency up to 48 MHz, high-speed embedded memories . As a minimal ready-to-run system, this board integrates micor USB power supply interface, ISP/SWD programming/debugging interface, boot mode selection and so on to take you into the ARM Cortex world easily.

Specification:
Module name: 250W boost constant current module
Module properties: non-isolated step-up module (BOOST)
Input voltage: DC 8.5V-48V
Input current: 10A (MAX) exceeds 8A please enhance heat dissipation
Quiescent current: 10mA (12V liter 20V, the output voltage, the higher the current will increase too quiet)
Output voltage: 10-50V continuously adjustable
Constant] range: 0.2-8A
Temperature: -40 -85℃ (ambient temperature is too high, please enhance heat dissipation)
Operating frequency: 150KHz
Conversion efficiency: up to 96%
Overcurrent protection: Yes
Input reverse polarity protection: Yes
Installation: 4 3mm screw holes
Connection method: Connection Output
Module size: 70mm x 36mm x 13mm

Application:
DIY a power supply, 12V can input and output can 12-50V adjustable.
The power supply for your electronic device, according to your system can set the output voltage value.
As the car power supply for your laptop, PDA or a variety of digital products supply.
DIY a mobile notebook power supply: 12V coupled with high-capacity lithium battery pack, so you can go where light where books.
Solar panel regulator.
To the battery, rechargeable lithium batteries.

Product Description
SHT30 digital temperature and humidity sensor uses SHT30 chip.
The new SHT3x digital humidity sensor series takes sensor technology to a new level. As the successor of the SHT2x series, it has been determined to set the next industry standard for humidity sensing. SHT3x humidity sensor series includes low-cost version SHT30 humidity sensor, standard version SHT31 humidity sensor and high-end version SHT35 humidity sensor.
SHT3x is based on the newly optimized CMOSens® chip, which can improve reliability and accuracy indicators. SHT3x provides a series of new features, such as enhanced signal processing, two unique and user-selectable I2C addresses, an alarm mode with programmable humidity and temperature limits, and a communication speed of up to 1 MHz.

Description:
100% Brand New and High Quality The dedicated module RDM630 series of non-contact RF ID card, preclude the use of advanced RF receiver circuits and embedded microcontroller design Combined with efficient decoding algorithms, to complete the EM4100 compatible ID card data reception This module is convenient to use, the power supply serial connection after for motherboard, when RFID card to enter the card read range, module will be through the UART the card number directly send for Receiver sensitivity, high operating current, high stability Suitable for access control, time and attendance, charges, anti-theft, Patrol and other radio frequency identification applications Frequency: 125KHz Interface: TTL RS232 Voltage:for DC 5V(±5% ) Current: <50mA Working temperature: -10°- 70° Storage temperature: -20°- 80° Max Humidity: 0-95% Working Size: about 46mmx32mmx3mm Module Size: about 38.5mmx19mmx9mm Package Included: 1x 125 KHZ RFID Card Read Module

Product Description
This product is a 180 KHz fixed frequency PWM buck (step-down) DC/DC module,capable of driving a 5A load with high efficiency, low ripple and excellent line and load regulation.The module with a voltage meter to display the input voltage and output voltage, and the voltage can be corrected through the button to improve the accuracy of the voltmeter.
Features:
1. LED power indicator.
2. Button to switch measurement of the input or output voltage, and LED indicates the current measurement of the input or output voltage; The nixie tube can be turned off by another button. Mentioned states are able to be memorized, is not lost even if the power is disconnected. (On-board marked "IN" LED is turned on, the nixie tube display input voltage value, "OUT" LED bright display is the output voltage value).
3. Special launch, the voltmeter calibration function, will never exist voltmeter inaccurate!
Voltmeter calibration method:
(1) Output voltage calibration steps
Step 1, adjust the right button so that "OUT" LED lighted, the voltmeter shows the value of output voltage; Press the right button for more than 2 seconds, release, voltmeter and "OUT" LED flashes in synchronization so that you enter the output voltage calibration mode.
Step 2, press the right button (normal speed), the voltage value is adding up a unit; Press the left button, minus a unit; Due to a unit is less than 0.1V, the minimum voltage display to 0.1V, so you need to continuously press 1-5 times to see the voltmeter change 0.1V, how many times voltmeter change 0.1V by pressing the key, depending on the current display voltage, the higher the voltage, the fewer the number of press.
Step 3, press the right button for more than 2 seconds, release, to exit the output voltage calibration mode. All parameters set to automatically power down to save.
(2) Input voltage calibration steps
Step 1, adjust the right button so that "IN" LED lighted, the voltmeter shows the value of input voltage; press the right button for more than 2 seconds, release, voltmeter and "IN" LED flashes in synchronization so that you enter the input voltage calibration mode.
Steps 2 and 3, consistent with the output voltage calibration method.
Two: Performance parameters
1.Input voltage range:4~38VDC(Note:input voltage not exceeding 38V)
2.Output voltage range:1.25-36VDC adjustable
3.Output current: 0-5A
4.Output power: 75W
5.voltmeter range: 4 to 40V, error ±0.1V
6.Operating frequency: 180KHz
7.High efficiency up to 96%
8.Built in thermal shutdown function
9.Built in current limit function
10.Built in output short protection function
11.Input reverse polarity protection: None (if required, high current diode in series with the input).
12.L x W x H =6.6*3.9*1.8CM
Three: application
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.

Description:
Size: 5mm/3mm
Length: 37mm.
Emitted Colour : Infrared.
Lens Color : Black/Clear.
wavelength: 940nm.
Forward Voltage (V) : 1.2-1.4V.
Forward Current (mA): 100mA.
Transmitting and receiving distance: about 7 - 8 M.

Specification:
1. Red, Green, Blue (RGB), and White Light Sensing with IR Blocking Filter
2. Programmable Analog Gain and Integration Time
3. 3,800,000:1 Dynamic Range
4. Very High Sensitivity ? Ideally Suited for Operation Behind Dark Glass
5. Maskable Interrupt
6. Programmable Upper and Lower Thresholds with Persistence Filter
7. Power Management
8. Low Power ? 2.5-uA Sleep State
9. 65-uA Wait State with Programmable Wait State Time from 2.4 ms to > 7 Seconds
10. I2C Fast Mode Compatible Interface
11. Data Rates up to 400 kbit/s
12. Input Voltage Levels Compatible with VDD or 1.8 V Bus
13. Register Set and Pin Compatible with the TCS3x71 Series
14. Small 2 mm*2.4 mm Dual Flat No-Lead (FN)
Applications
1. RGB LED Backlight Control
2. Light Color Temperature Measurement
3. Ambient Light Sensing for Display Backlight Control
4. Fluid and Gas Analysis
5. Product Color Verification and Sorting

Description
100% brand new and high quality
Material: Electrical components
Color: See pictures
Chip models: CM108 external crystal
Output Input: 3.5mm green headphone jack, 3.5mm microphone jack
USB interface, plug and play, instead of traditional sound card (computer sound card is broken, can be a direct replacement)
Analog audio signals can be output to directly drive headphones or powered speakers
No drivers in WIN2000, WINXP, WIN3003 system
Package includes:
1Pc x CM108 USB Drive Free USB Sound Card Laptop Computer External Sound Card Module

Introduction
This circuit voltage can be from 0 v, output current can be ma from 2 to 3 a continuously adjustable, set the output current, if the experiment circuit exceeds the current (including short circuit), the circuit protection immediately, not cause danger such as burning device, it is electronic manufacture's right-hand man. It is never afraid of the fireworks! Like making all kinds of audio circuit friend, often due to the different working voltage and circuit have a headache, this circuit can also two series into a dual power supply, can meet the needs of all sorts of use.

Note: This is a compatible version, not the original one. But exactly the same as the original function
HC-05
It's HC-05 Bluetooth module Slaveand master two in one module.

This module can be set to a transmitter or receiver, transmitter could pairing with receiver , receiver and receiver or transmitter and transmitter can't communication between, receiver could pairing with computers and cell phone bluetooth , when buying, the default for receiver.

Use the CSR mainstream Bluetooth chip, Bluetooth V2.0 protocol standards.
Module working voltage 3.3 V.
Potter default rate of 9600, the user can be set up.
The core module size : 28 mm x 15 mm x 2.35 mm.
Working current: matching for 30 MA, matching the communication for 8 MA.
Dormancy current: no dormancy.
Used for GPS navigation system, water and electricity gas meter reading system.
With computer and Bluetooth adapter, PDA, seamless connection equipment

Commercial Series: Bluetooth module board Series
With LED indicator light, use 150mA and 3.3V regulation chip.
With VCC.GND.TXD.RXD foot for the Bluetooth
With "Re-search" button(ON/OFF/WAKE foot for it , external MCU out/input "High level" can control module to re-search)
Compatible with Bluetooth master module "slave module" or master-slave(whole) module.
Input voltage: 3.3 -6V
Size: 1.55cm * 3.98cm

Note:
Input power supply 3.3~6V, Prohibit more than 7V
No "Automatically prevent power supply peversing func", so please correctly connect power supply
We advise to install "Bluetooth master module"
The "State" is output foot for LED status, when Bluetooth "Unconnected", output "Pulse", when Bluetooth "connected", output "High level", we can determine the states from "MCU"
If only the board, No any "Bluetooth Function"



HC-06
This's HC-06 Bluetooth module.
Allows your device to both send or receive the TTL data via Bluetooth technology without connecting a serial cable to your computer.

Feature:
Works with any USB Bluetooth adapters.
Default Baud Rate: 9600,8,1,n.
Built in antenna.
Coverage up to 30ft.
Bluetooth version: V2.0 EDR
Operating voltage: 3.3V
Default Baud Rate: 9600,8,1,n.
Signal coverage: 30ft
Cable length: 21.5cm
Item size: 4.3 * 1.6 * 0.7cm
Item weight: 3g
Package size: 9 * 3 * 1cm
Package weight: 8g
Commercial Series: Bluetooth module board Series
With LED indicator light, use 150mA and 3.3V regulation chip.
With VCC.GND.TXD.RXD foot for the Bluetooth
With "Re-seach" button(ON/OFF/WAKE foot for it , external MCU outinput "High level" can control module to re-seach)
Compatible with bluetooth master module".slave module"or master-slave(whole) module.
Input voltage: 3.3~6V
Size: 1.55cm*3.98cm

Note:
Input power supply 3.3~6V, Prohibit more than 7V
No "Automatically prevent power supply peversing func", so please correctly connect power supply
We advise to install "Bluetooth master module"
The "State" is output foot for LED status, when bluetooth "Unconnected", output "Pulse" ; when bluetooth "connected", output "High level", we can determine the states from "MCU"
If only the board , No any "Bluetooth Function"

Note: This is a compatible version, not the original one. But exactly the same as the original function
HC-05
It's HC-05 Bluetooth module Slaveand master two in one module.

This module can be set to a transmitter or receiver, transmitter could pairing with receiver , receiver and receiver or transmitter and transmitter can't communication between, receiver could pairing with computers and cell phone bluetooth , when buying, the default for receiver.

Use the CSR mainstream Bluetooth chip, Bluetooth V2.0 protocol standards.
Module working voltage 3.3 V.
Potter default rate of 9600, the user can be set up.
The core module size : 28 mm x 15 mm x 2.35 mm.
Working current: matching for 30 MA, matching the communication for 8 MA.
Dormancy current: no dormancy.
Used for GPS navigation system, water and electricity gas meter reading system.
With computer and Bluetooth adapter, PDA, seamless connection equipment

Commercial Series: Bluetooth module board Series
With LED indicator light, use 150mA and 3.3V regulation chip.
With VCC.GND.TXD.RXD foot for the Bluetooth
With "Re-search" button(ON/OFF/WAKE foot for it , external MCU out/input "High level" can control module to re-search)
Compatible with Bluetooth master module "slave module" or master-slave(whole) module.
Input voltage: 3.3 -6V
Size: 1.55cm * 3.98cm

Note:
Input power supply 3.3~6V, Prohibit more than 7V
No "Automatically prevent power supply peversing func", so please correctly connect power supply
We advise to install "Bluetooth master module"
The "State" is output foot for LED status, when Bluetooth "Unconnected", output "Pulse", when Bluetooth "connected", output "High level", we can determine the states from "MCU"
If only the board, No any "Bluetooth Function"



HC-06
This's HC-06 Bluetooth module.
Allows your device to both send or receive the TTL data via Bluetooth technology without connecting a serial cable to your computer.

Feature:
Works with any USB Bluetooth adapters.
Default Baud Rate: 9600,8,1,n.
Built in antenna.
Coverage up to 30ft.
Bluetooth version: V2.0 EDR
Operating voltage: 3.3V
Default Baud Rate: 9600,8,1,n.
Signal coverage: 30ft
Cable length: 21.5cm
Item size: 4.3 * 1.6 * 0.7cm
Item weight: 3g
Package size: 9 * 3 * 1cm
Package weight: 8g
Commercial Series: Bluetooth module board Series
With LED indicator light, use 150mA and 3.3V regulation chip.
With VCC.GND.TXD.RXD foot for the Bluetooth
With "Re-seach" button(ON/OFF/WAKE foot for it , external MCU outinput "High level" can control module to re-seach)
Compatible with bluetooth master module".slave module"or master-slave(whole) module.
Input voltage: 3.3~6V
Size: 1.55cm*3.98cm

Note:
Input power supply 3.3~6V, Prohibit more than 7V
No "Automatically prevent power supply peversing func", so please correctly connect power supply
We advise to install "Bluetooth master module"
The "State" is output foot for LED status, when bluetooth "Unconnected", output "Pulse" ; when bluetooth "connected", output "High level", we can determine the states from "MCU"
If only the board , No any "Bluetooth Function"

Description
Based on ESP-8266EX
for arduino compatible, use for arduino IDE programming
11 x I/O pins
1 x ADC pin (input range 0-3.3V)
Support OTA wireless upload
Onboard 5V 1A switching power supply (maximum input voltage 24V)
After installing the hardware package,
Develop directly using arduino IDE, and operate arduino in the same way
Features:
1. Support D1 MINI
2. Compatible with ar-duino, use ar-duino IDE for programming
3.11 XI/O pin
4.1 XADC pin (0-3.3-V)
5. Support OTA online

Description:
NEO-6M GPS module with antenna and build-in EEPROM .This module is compatible with APM2 and APM2.5, and EEPROM can save all your configuration data.
Feature:
Voltage: 3.3 V-5 V
Size: 36mm * 24mm
Interface: RS232 TTL
Power: 3-5V
Baud rate default: 9600bps Without battery (it's not safety by air mail) The battery Model is MS621FE,Need to welding
You can download the test program directly from official website (u-center version 6.31 download(internet connection is required for installation.

Description:
NEO-6M GPS module with antenna and build-in EEPROM .This module is compatible with APM2 and APM2.5, and EEPROM can save all your configuration data.
Feature:
Voltage: 3.3 V-5 V
Size: 36mm * 24mm
Interface: RS232 TTL
Power: 3-5V
Baud rate default: 9600bps Without battery (it's not safety by air mail) The battery Model is MS621FE,Need to welding
You can download the test program directly from official website (u-center version 6.31 download(internet connection is required for installation.