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Features:
RC absorption circuit module used on protecting the relay or thyristor because it can avoid damage that from inductive electromotive force generated by the inductive load when on or off. Preventing electromagnetic interference and increasing the anti-jamming capability of the microcontroller.
For AC or DC 5 ~ 400V inductive load (less than 1000W), protection relay contacts or thyristor.
RC absorption circuit,absorb induced electromotive force that from inductive load.
With varistor, to prevent excessive fluctuations in voltage or current is too large and resulting in relay contact adhesion.
To provide anti-interference ability of the circuit.
Adopt crimp terminals that make wiring become more convenient.
Instructions for use: This module is suitable for circuits containing inductive loads and switching devices such as relays and thyristors. When used, the two connectors of the module connect to two contacts of the relay, or parallel with the thyristor, to avoid induced electromotive force damage the relay or thyristor.
RC Absorption/Snubber Circuit Module only, other accessories demo in the picture is not included!
Dimensions: 3.1x1.3cm/1.22x0.51inch

Product Description
Two-channel digital amplifier board

Amplifier chip: TPA3110
Working voltage: 8 ~ 26VDC (power input with polarity protection)
Recommended power supply: 12V DC current 2A
Output power: 2X15W
Recommended speaker impedance: 4 ~ 10 ohms
With mute interface: MUTE (generally vacant without)

Dual Motor Driver 1A TB6612FNG Microcontroller
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"

Dual Motor Driver 1A TB6612FNG Microcontroller
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"

Introduction:
The module adopts XL4016 switch-type voltage regulator chip, cooperates with MBR10200 double rectification, and adds load protection circuit in the circuit to protect the load. The maximum instantaneous output current can reach 8A, and a fan is required to dissipate heat. It is recommended to be within 5A for long-term operation.
Main control chip used:
XL4016 is a switching step-down line DC-DC converter chip with a fixed switching frequency of 180KHz. The chip has excellent linear regulation and load regulation. The output voltage can be adjusted between 1.25V and 36V. The chip integrates reliability modules such as over-voltage protection, over-current protection, over-temperature protection, and short-circuit protection.
MBR Schottky diode is characterized by low forward voltage drop and high forward current. It can not only replace ordinary rectifier diodes for rectification circuits, but also replace fast recovery diodes for switching power supplies. In some cases, rectification is required. It is also suitable for occasions where the link loss voltage is low and the rectification is large.
LM358 operational amplifier
LM358 is a dual operational amplifier. There are two independent, high-gain, internal frequency-compensated operational amplifiers, which are suitable for single power supply with a wide range of power supply voltage, and also suitable for dual power supply mode. Under the recommended working conditions, the power supply current has nothing to do with the power supply voltage.
l Internal frequency compensation
l High DC voltage gain
l High potential gain (about 100dB)
l Low power consumption current, suitable for battery power supply
l Low input bias current, low input offset voltage and offset current
CD4051 electronic switch
CD4051 is a single-channel digital control analog electronic switch, with three binary input terminals A, B, C and INH input, with low on-resistance and very low cut-off leakage current. The digital signal with amplitude of 4.5~20V can control the peak value to 20V analog signal. For example, if VDD= 5V, VSS=0, VEE=-13.5V, the digital signal of 0~5V can control the analog signal of -13.5~4.5V. These switching circuits have extremely low static power consumption in the entire VDD-VSS and VDD-VEE power supply range, regardless of the logic state of the control signal. When INH input terminal = "1", all channels are cut off. Three-bit binary signal selection channel One of the 8 channels can be connected to the input terminal to the output.
XL1509 overview:
XL1509 is a 150KHz fixed frequency pulse width modulation (buck type) DC/DC converter. It has 2A load drive capability and high efficiency, low ripple and excellent linearity, good load regulation ability, and only requires a minimum of external components. Adjustable output is easy to use, built-in frequency compensation and fixed frequency oscillator.
The pulse width modulation control circuit can linearly adjust the duty cycle from 0 to 100% . With enabling function, built-in over-current and short-circuit protection functions, when over-current and short-circuit protection occurs, the operating frequency of the XL1509 is reduced from 150KHz to 50KHz. The built-in frequency compensation module minimizes damage to the external components of the XL1509.

Description:
ADXL345 is a small, thin, low-power three-axis accelerometer can be high
Up to ± 16 g accelerometer with high resolution (13) measurements. Digital Outputs
According to a 16-bit twos complement format, can be accessed through the digital interface SPI (3-wire or 4-wire) or I2C.
ADXL345 is well suited for mobile device applications. It can tilt sensing applications
Measuring the static acceleration of gravity, it can also measure the dynamic add motion or shock caused
speed. Its high resolution (4 mg / LSB), capable of measuring about 0.25 ° of inclination
Angle change. Use ADXL345 digital output acceleration timing, etc., without the need for
Analog to digital conversion, reducing system cost and board space. In addition, ADXL345 is a small, thin, ultra-low power 3-axis accelerometer with high resolution (13-bit) measurement at up to ± 16g. Digital output data is 16-bit twos complement format, can be accessed via I2C digital interface SPI (3-wire or 4-wire) or.
ADXL345 is well suited for mobile device applications. It can tilt sensing applications
Measures the static acceleration of gravity, you can measure motion or shock resulting from moving
State acceleration. Its high resolution (3.9mg / LSB), capable of measuring less than 1.0 °
Tilt angle change.
The device offers a variety of special detection. Activity and inactivity sensing through
Comparing any axis acceleration threshold set by the user to detect the presence or absence of transport
Movable occurs. Tap any direction sensing detects single and dual vibration vibration
Make. Free-fall detection can detect whether the device is falling. These ones
Functions can be mapped to two interrupt output pins a. Shen is
Please patented integrated memory management system uses a 32 FIFO
(FIFO) buffer can be used to store data, which will host processor load
Minimize, and lower overall system power consumption.
Low power modes enable intelligent motion-based power management to a very low
Power consumption threshold sensing and active acceleration measurement.
Feature      Power supply: 3-5v
Communication: IIC / SPI communication protocol
Measuring range: ± 2g ± 16g

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.

Product Description
1 reset button, 1 general use button, and 2 LED circuits can be used directly.
5V, GND, and Raw pins are exposed as well.
SOIC place for IC.
The mini breadboard has 170 tie points.
The breadboard sticks on the prototype shield with its self-adhesive backing.
Prototype Size:7cm x 5.5cm x 2cm
Mini breadboard size: 4.4 * 3.4 * 1cm

Metal Detector Kit Green
Operating Voltage: DC 3-5V
Operating Current: 40mA
Standby Current: 5mA
Detection Distance: 60mm
Alarm mode: Sound/Light
Difficulty: Easy
PCB Size : 86*61mm
1>. Game entertainment
2>. Security check
3>. Search for metal products
5>. Car detection
5>. Traffic Statistics
6>. Elevator floor control
7>. Production equipment position detection
8>. Production equipment development and design
9>. Electronic Product Design
10>. Play equipment development
11>. Metal proximity switch
12>. Metal detection in human body4.Schematic
Component listing
NO. Component Name PCB Marker Parameter QTY
1 Metal Film Resistor R3 470ohm 1
2 Metal Film Resistor R2 2K 1
3 Metal Film Resistor R1 200K 1
4 Potentiometer VR1 100R 1
5 Ceramic Capacitor C2,C3 0.022uf 2
6 Ceramic Capacitor C1,C4 0.1uf 2
7 Electrolytic Capacitor C5 100uf 1
8 Red LED LED1 5mm 1
9 S9012 Q2,Q3 TO-92 2
10 S9018 Q1 TO-92 1
11 Power Switch SW1 6*5mm 1
12 Buzzer SP1 9*12mm 1
13 Power Socket J1 KF301-2P 1
14 PCB MDS-60 1

Metal Detector Kit Blue
Feature:
This is an Electronic DIY KIT , some soldering experience is required. The PCB (Printed Circuit Board) is provided with the DIY KIT and it needs to be soldered, hence the name DIY KIT.
All required electronic parts are provided, please refer to the images for more details.
100% Brand new and high quality Metal Detector.
Working voltage : 3-5V DC
Dimension : 66 X 61 MM
Max detector distance : 2CM ~ 5CM

Package including :
1 X PCB Board (color will be shipped out by randomly )
1 X Buzzer
1 X 100UF 25V Electronic capacitor
2 X 104 ceramic capacitor
2 X 222 polyester capacitor
1 X 220KR 0.25w metal film resistor
1 X 2.2KR 0.25w metal film resistor
1 X 100R Blue&white Potentiometer
1 X 9018 transistor
1 X 9015 transistor
1 X 9012 transistor
1 X 10CM RED 22AWG Line
1 X 10CM Black 22 AWG line

Metal Detector Kit Green
Operating Voltage: DC 3-5V
Operating Current: 40mA
Standby Current: 5mA
Detection Distance: 60mm
Alarm mode: Sound/Light
Difficulty: Easy
PCB Size : 86*61mm
1>. Game entertainment
2>. Security check
3>. Search for metal products
5>. Car detection
5>. Traffic Statistics
6>. Elevator floor control
7>. Production equipment position detection
8>. Production equipment development and design
9>. Electronic Product Design
10>. Play equipment development
11>. Metal proximity switch
12>. Metal detection in human body4.Schematic
Component listing
NO. Component Name PCB Marker Parameter QTY
1 Metal Film Resistor R3 470ohm 1
2 Metal Film Resistor R2 2K 1
3 Metal Film Resistor R1 200K 1
4 Potentiometer VR1 100R 1
5 Ceramic Capacitor C2,C3 0.022uf 2
6 Ceramic Capacitor C1,C4 0.1uf 2
7 Electrolytic Capacitor C5 100uf 1
8 Red LED LED1 5mm 1
9 S9012 Q2,Q3 TO-92 2
10 S9018 Q1 TO-92 1
11 Power Switch SW1 6*5mm 1
12 Buzzer SP1 9*12mm 1
13 Power Socket J1 KF301-2P 1
14 PCB MDS-60 1

Metal Detector Kit Blue
Feature:
This is an Electronic DIY KIT , some soldering experience is required. The PCB (Printed Circuit Board) is provided with the DIY KIT and it needs to be soldered, hence the name DIY KIT.
All required electronic parts are provided, please refer to the images for more details.
100% Brand new and high quality Metal Detector.
Working voltage : 3-5V DC
Dimension : 66 X 61 MM
Max detector distance : 2CM ~ 5CM

Package including :
1 X PCB Board (color will be shipped out by randomly )
1 X Buzzer
1 X 100UF 25V Electronic capacitor
2 X 104 ceramic capacitor
2 X 222 polyester capacitor
1 X 220KR 0.25w metal film resistor
1 X 2.2KR 0.25w metal film resistor
1 X 100R Blue&white Potentiometer
1 X 9018 transistor
1 X 9015 transistor
1 X 9012 transistor
1 X 10CM RED 22AWG Line
1 X 10CM Black 22 AWG line

Description
·Using FT232RL chip;
· Lead out all signal ports of FT232RL chip, TTL/CMOS level;
·RXD/TXD transceiver communication indicator;
·USB power supply, optional 5V or 3.3V interface level (if you need other levels, you can directly provide the target voltage on the VCC and GND pins).
Features:
Brand new and high quality 100% .
Material: PCB electronic components
Support 3.3 v, 5 v
Main color: red
Chip: FT232RL
RXD / TXD transceiver communication indicators
Definition: DTR, RXD TXD, VCC, CTS, GND
Pitch: 2.54mm
Module size: 36 mm (length) * 17.5 mm (width)
List:
1 x FT232RL TTL serial module

Specification:
Product name: 3 Series 12.6V 5A lithium battery protection module
Product model: HW-541
Charging voltage: DC 12.6 -14V
Maximum working current: 4 -5A
Maximum instantaneous current: 6 -7A
Battery over-discharge voltage: 2.3 -2.6V
Battery over-discharge protection recovery voltage 4.1 -4.2V
Battery over-discharge current protection point: 5.5 -6.5A
Battery overcharge protection voltage point: 4.2 -4.3V
Battery overcharge protection recovery voltage: 4.1 -4.2V
Product size: 40*15*1mm
Applicable options: suitable for lithium batteries with a nominal voltage of 3.7V and a full charge of 4.2V (including 18650, 26650, polymer lithium batteries)

Description:
Onboard front-facing IC to improve the input sensitivity, high-definition sound quality.
Name: TPA3116D2 Digital Amplifier Board
Model: XH-M543
Chip type: TPA3116D2
Working voltage: DC12-26V
Output power: 2*120W MAX
DC12V, 2*50W
DC24V, 2*120W
Signal to noise ratio: 100db
Channel: Dual channel stereo
Size; 92*68*16mm

Description
2X50W Tda7492 D Class High-Power Digital Amplifier Board Amp W/Radiator New

The use of high-speed SMT placement machine, over temperature reflow, the performance is very stable,

With 4 model GAIN parts.can auto work on different voltage.

Ultra-small 70X57MM

Comes with super output short-circuit and over-temperature overload and prevent the impact of the switch machine

STMicroelectronics TDA7492 chip.low price. but with big power and good sound quality output

Note: When the speaker impedance is 4 ohms, the operating voltage must be less than 18V, the speaker impedance is 6 ohms, the operating voltage can not exceed 24V, the speaker impedance is 8 ohms, the working voltage can not exceed 26V, the power not to reverse the polarity.

Specification:

Power supply: Single-voltage 10-26V DC

Maximum power:50W*2/8 Ohm

Mono BTL power 100W / 4 Ohms

Size:70*57mm*21mm
Quantity: 1pc

200PCS
40 X 3mm red LED diode
40 X 3mm white LED diode

40 X 3mm green LED diode

40 X 3mm blue LED diode

40 X 3mm yellow LED diode

20 X 5mm red LED diode

20 X 5mm white LED diode

20 X 5mm green LED diode

20 X 5mm blue LED diode

20 X 5mm yellow LED diode
100PCS
20 X 5mm red LED diode

20 X 5mm white LED diode

20 X 5mm green LED diode

20 X 5mm blue LED diode

20 X 5mm yellow LED diode

200PCS
40 X 3mm red LED diode
40 X 3mm white LED diode

40 X 3mm green LED diode

40 X 3mm blue LED diode

40 X 3mm yellow LED diode

20 X 5mm red LED diode

20 X 5mm white LED diode

20 X 5mm green LED diode

20 X 5mm blue LED diode

20 X 5mm yellow LED diode
100PCS
20 X 5mm red LED diode

20 X 5mm white LED diode

20 X 5mm green LED diode

20 X 5mm blue LED diode

20 X 5mm yellow LED diode

Product Description
1602 LCD:
LCD display module with blue/Green/White blacklight.
Wide viewing angle and high contrast.
Built-in industry standard HD44780 equivalent LCD controller.
Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and
storage devices.
LCM type: Character
Can display 2-lines X 16-characters.
Voltage: 5V DC.
Module dimension: 80mm x 35mm x 11mm.
Viewing area size: 64.5mm x 16mm

Features IIC/I2C :
1602 I2C interface 4-wire 1602 screen
IO port of Arduino control board is only 20,so IO ports is not enough for many sensor, SD card, relay modules.
The original 1602 screen need 7 IO ports to drive up, and this module can save 5 IO ports

Product Description
1602 LCD:
LCD display module with blue/Green/White blacklight.
Wide viewing angle and high contrast.
Built-in industry standard HD44780 equivalent LCD controller.
Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and
storage devices.
LCM type: Character
Can display 2-lines X 16-characters.
Voltage: 5V DC.
Module dimension: 80mm x 35mm x 11mm.
Viewing area size: 64.5mm x 16mm

Features IIC/I2C :
1602 I2C interface 4-wire 1602 screen
IO port of Arduino control board is only 20,so IO ports is not enough for many sensor, SD card, relay modules.
The original 1602 screen need 7 IO ports to drive up, and this module can save 5 IO ports

Product Description
1602 LCD:
LCD display module with blue/Green/White blacklight.
Wide viewing angle and high contrast.
Built-in industry standard HD44780 equivalent LCD controller.
Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and
storage devices.
LCM type: Character
Can display 2-lines X 16-characters.
Voltage: 5V DC.
Module dimension: 80mm x 35mm x 11mm.
Viewing area size: 64.5mm x 16mm

Features IIC/I2C :
1602 I2C interface 4-wire 1602 screen
IO port of Arduino control board is only 20,so IO ports is not enough for many sensor, SD card, relay modules.
The original 1602 screen need 7 IO ports to drive up, and this module can save 5 IO ports

Product Description
1602 LCD:
LCD display module with blue/Green/White blacklight.
Wide viewing angle and high contrast.
Built-in industry standard HD44780 equivalent LCD controller.
Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and
storage devices.
LCM type: Character
Can display 2-lines X 16-characters.
Voltage: 5V DC.
Module dimension: 80mm x 35mm x 11mm.
Viewing area size: 64.5mm x 16mm

Features IIC/I2C :
1602 I2C interface 4-wire 1602 screen
IO port of Arduino control board is only 20,so IO ports is not enough for many sensor, SD card, relay modules.
The original 1602 screen need 7 IO ports to drive up, and this module can save 5 IO ports

Product Description
Model: BF350-3AA (**) N*
Grid wire: length x width 3.2x3.1mm
Base size: length x width 7.4x4.4mm
Substrate material: modified phenolic substrate.
Grid wire material: made of constantan foil, fully enclosed structure.
Resistance: 350 ohm
Main Specifications
BF series
Typical resistance value
350
Tolerance to average resistance
≤±0.1%
Sensitivity factor
2.00-2.20
Sensitivity coefficient dispersion
≤±1%
Strain limit
2.0%
Fatigue life
≥1M
Temperature self-compensation coefficient
9,11,16,23,27
temperature range
-30- 80
How to use strain gauge

(1) Mainly applicable to the pressure sensor manufacturing process of 0.02 level. The 0.02 level means that the output error is within the range of plus or minus 0.02 at full scale. The accuracy is high. The specific sensor manufacturing process will be described in detail later.

(2) Directly measure the strain of the component.

Paste the strain gauge directly on the deformed part of the component. When the component deforms, the resistance value of the strain gauge changes. The resistance change of the strain gauge can be measured by the resistance strain measuring device (strain gauge), which can be converted into strain or proportional to the strain Electrical signals (voltage, current) are sufficient.

(3) The choice of the circuit (the key is marked red)

The resistance change of the strain gauge is very small, and there must be an appropriate circuit to detect the small change. We usually choose a circuit where the change of the strain gauge resistance can control the circuit, so that the circuit can output similar to the resistance change Electrical signal (voltage or current), and then proper processing of this signal (amplification processing).

Description:
This module provides a versatile infrared detection system solutions for automation machinery devices such as smart cars, robots. The sensor module is adaptable to ambient light. It has a pair of infrared transmitting and receiving tube. Transmitting tube sends out a certain frequency IR which will be reflected when detecting obstacles (reflecting surface) and received by receiving tube. After processing with comparator circuit, signal output interface outputs digital signal (a low voltage level signal).
Features:
When the module detects obstacles signal, red indicator lights on and OUT port continuous outputs low voltage level signals at the same time.
Detection distance can be adjusted with potentiometer, clockwise to increase and counterclockwise to reduce.
Target reflectivity and shape is the key point of detection distance. Small and black objects have minimum detection distance, while large and white ones have maximum distance.
Output port can be directly connected to the SCM IO port, also can drive a 5V relay module or buzzer module directly.
Widely used in robot obstacle avoidance, car obstacle avoidance, assembly line counting and black white line tracking.
Specifications:
Working Voltage: 3.3V-5V DC
Working Current: >1A
Detection Distance: 2~60cm
Detection Angle: 35°
Size:
Big Board: 42*38*12mm
Small Board: 25*12*12mm
Mounting Hole Diameter: 3mm
Note:
1, Do not put probe toward sunlight. Sunlight will cause interference to module.
2, Sensitivity should not be regulated excessively high because high sensitivity can easily lead to false trigger.

Product Description
Product model number: XH-M567
Chip type: TPA3116D2
Chip protection: overvoltage undervoltage superheat DC detection short circuit
Supply voltage: DC 12V to 24V
Output power: 80W X 2
Power efficiency > 90%
Number of channels: double channel output
Size: 60*32*14mm (length*width*height)
Weight: about 40g
TPA3116D2 chip features:
1. High-efficiency class D operation, with > 90% power efficiency and low idle loss characteristics, advanced modulation system configuration, multiple switching frequencies, and AM interference prevention;
2. The TPA3116D2 advanced oscillator / PLL circuit uses multiple switching frequency options to suppress AM interference. When used with the master-slave mode option, multiple devices can also be synchronized;
3. The TPA3116D2 device provides comprehensive protection against short circuit, overheating, overvoltage, undervoltage and DC faults. In the event of an overload condition, the device reports the fault condition to the processor, thereby avoiding its own damage.
Note:
The general power supply and power amplifier should be kept at a certain distance to avoid electromagnetic interference. It is better to use a high quality power supply and the power supply will be stable. If you use a power supply such as a transformer, it is best to cover the transformer with a metal cover to prevent electromagnetic interference.
Package included:
1 X XH-M567 double channel digital amplifier board

Product Description
100% brand new and high quality
1.8 inch TFT Color LCD Display Module with SPI interface
Support serial SPI mode
Need just 5 IOs Port from your MCU
Dot Matrix: 128X160
Size: 46x34x2mm

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

Description:
This moduel is an USB adpater /
programmer for ESP8266 moduels of type ESP-01.
It is conveniently fitted with a 2x4P
2.54mm female header to plug the ESP01
(according to illustration picture 2)
and configure or run it right away.
A large 1000μF cap will help getting a steady 5.0V VCC
from the USb bus and and jumper (on the right of the 2x4P header)(we don't offer any jumper !!!!)
will help configuring the GPIO0 line according needs.
The module is based on the USB-UART bridget CH340
from WCH which is compatible with all platforms.

Note : for an usage with Arduino ESP8266 platform and for Arduino IDE
it is necessary to switch manually the GPIO0 state for working mode,
in order to get a fully automatic upload it is most likely possible,
for a very limited effort, to assign an unused control line
from CH340 to driver the GPIO0 line
(probably at the cost of a necessary logic inversion),
refer to the CH340 datasheet and
most important to the NodeMCU V0.9
which use the CH340 and already implements this solution,
the schematic is open source and easily available.

Description:
This moduel is an USB adpater /
programmer for ESP8266 moduels of type ESP-01.
It is conveniently fitted with a 2x4P
2.54mm female header to plug the ESP01
(according to illustration picture 2)
and configure or run it right away.
A large 1000μF cap will help getting a steady 5.0V VCC
from the USb bus and and jumper (on the right of the 2x4P header)(we don't offer any jumper !!!!)
will help configuring the GPIO0 line according needs.
The module is based on the USB-UART bridget CH340
from WCH which is compatible with all platforms.

Note : for an usage with Arduino ESP8266 platform and for Arduino IDE
it is necessary to switch manually the GPIO0 state for working mode,
in order to get a fully automatic upload it is most likely possible,
for a very limited effort, to assign an unused control line
from CH340 to driver the GPIO0 line
(probably at the cost of a necessary logic inversion),
refer to the CH340 datasheet and
most important to the NodeMCU V0.9
which use the CH340 and already implements this solution,
the schematic is open source and easily available.

Description:
This moduel is an USB adpater /
programmer for ESP8266 moduels of type ESP-01.
It is conveniently fitted with a 2x4P
2.54mm female header to plug the ESP01
(according to illustration picture 2)
and configure or run it right away.
A large 1000μF cap will help getting a steady 5.0V VCC
from the USb bus and and jumper (on the right of the 2x4P header)(we don't offer any jumper !!!!)
will help configuring the GPIO0 line according needs.
The module is based on the USB-UART bridget CH340
from WCH which is compatible with all platforms.

Note : for an usage with Arduino ESP8266 platform and for Arduino IDE
it is necessary to switch manually the GPIO0 state for working mode,
in order to get a fully automatic upload it is most likely possible,
for a very limited effort, to assign an unused control line
from CH340 to driver the GPIO0 line
(probably at the cost of a necessary logic inversion),
refer to the CH340 datasheet and
most important to the NodeMCU V0.9
which use the CH340 and already implements this solution,
the schematic is open source and easily available.

Product Description
This is a set of transmitter and receiver in one of the photoelectric sensor. The detection distance can be adjusted upon request. The sensor has a detection distance and the visible light interference, cheap, easy to assemble, easy to use features of robot obstacle avoidance, and assembly line piece can be widely used in many occasions.
Electrical Characteristics:
U: 5VDC
I: The 100mA
Sn :3-80CM
Size:
Diameter: 17MM
Sensor length: 45MM
Lead Length: 45CM
Applications:
A production line goods automatic counting device
2, multi-functional reminder
3, the maze robot
Red: connected 4.5-5V power supply high
Yellow: connected microcontroller output TTL level to the microcontroller
Green: GND 0V power low
Photoelectric sensor (photoelectric switch) NPN normally open
Model: E18-D80NK the.
The technical parameters of the photoelectric switch E18:
1, the output current, output, DC / SCR / Relay Control: 100mA/5V supply
2 Current consumption DC <25mA
3, response time <2ms
4, point angle: more than15 °, the effective distance is adjustable from 3-80CM
5,To detect objects: a transparent or opaque body
6, the working environment temperature: -25 °C ~ 55 °C
7, the standard detection object: sunlight 10000LX is the following incandescent 3000LX below
8, Case Material: Plastic

Product Description
This is a set of transmitter and receiver in one of the photoelectric sensor. The detection distance can be adjusted upon request. The sensor has a detection distance and the visible light interference, cheap, easy to assemble, easy to use features of robot obstacle avoidance, and assembly line piece can be widely used in many occasions.
Electrical Characteristics:
U: 5VDC
I: The 100mA
Sn :3-80CM
Size:
Diameter: 17MM
Sensor length: 45MM
Lead Length: 45CM
Applications:
A production line goods automatic counting device
2, multi-functional reminder
3, the maze robot
Red: connected 4.5-5V power supply high
Yellow: connected microcontroller output TTL level to the microcontroller
Green: GND 0V power low
Photoelectric sensor (photoelectric switch) NPN normally open
Model: E18-D80NK the.
The technical parameters of the photoelectric switch E18:
1, the output current, output, DC / SCR / Relay Control: 100mA/5V supply
2 Current consumption DC <25mA
3, response time <2ms
4, point angle: more than15 °, the effective distance is adjustable from 3-80CM
5,To detect objects: a transparent or opaque body
6, the working environment temperature: -25 °C ~ 55 °C
7, the standard detection object: sunlight 10000LX is the following incandescent 3000LX below
8, Case Material: Plastic

Product Description
This module uses 24-bit high-precision A/D conversion chip hx711. It is specially designed for high-precision electronic scales, with two analog input channels and an internal integrated 128 times programmable gain amplifier. The input circuit can be configured to provide a bridge pressure bridge (such as pressure, load cell mode), with high accuracy and low cost, and is an ideal sampling front-end module.
Features:
*Two optional differential input channels
*On-chip active low-noise PGA with optional gains of 32, 64 and 128
*On-chip power regulator is used for load cell and ADC analog power supply
*On-chip oscillator requires no external components with optional external crystal
*On-chip power-on reset
*Simple digital control and serial interface: pin drive control, no programming required
*Choose 10SPS or 80SPS output data rate
*Simultaneous 50 and 60Hz power supply suppression
*Current consumption, included in-chip analog power supply voltage regulation: normal operation <1.5mA, power down <1uA
*Working power supply voltage range: 2.6 ~ 5.5V
*Working temperature range: -40 ~ 85°

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Introduction
1. Color:As pictures
2. Structure:Fixed capacitors
3. Capacitor Length:5mm/0.19''
4. Capacitor Range : 10pf~100nf
5. Capacitor Tolerance: ±10% .
6. Working Voltage: 50V
7. Quantity:100PCS
8. Durable and easy to install
9. Very convenient and practical
10. High precision and stability
11. Very popular among the electronic lovers
12. Many type of metal film resistors assorted,can meet your different demand.

Product Description
Use the front line to connect two 50W speakers.
(1) After power on, the indicator light is on for about 2 seconds and then enters the Bluetooth connection mode. At this time, the indicator light flashes quickly (flashing once every 1 second), and the flashing time is about 14 seconds.
(2) After the fast flashing ends, it enters the waiting pairing mode. At this time, the light flashes slowly (flashing once every 2 seconds) for between 40 seconds and 5 minutes. During the slow flashing period, a piece of pure music will be played automatically and repeatedly, and after the slow flashing, it will enter the fast flashing again, and so on. (To connect to the Bluetooth during the slow flashing, you need to press the play/pause button to enter the fast flashing to click on the phone for Bluetooth pairing connection) After the Bluetooth and the phone are successfully connected, the indicator light is always on and the pure music stops playing.
(3) After the mobile phone is disconnected from the Bluetooth, the light flashes quickly for about 3 seconds and then enters the playing pure music mode. At this time, the indicator light flashes slowly.
(4) The minimum volume can be adjusted to no sound. When the maximum volume is adjusted, a piercing sound means that it has been adjusted to the maximum. To adjust from the maximum volume to the minimum volume, you need to press the volume down key 30 times; vice versa.
Product parameters:
(1) Operating voltage range: DC 8～24V.
(2) Number of channels: dual channels.
(3) Adaptation speaker impedance: 4-12Ω.
(4) Adapted speaker power: 30-50W (to be determined).
(5) Transmission distance (open area): 15 meters.
Pin function:
(1) POWER-: GND.
(2) POWER : VCC.
(3) SPK1 : Speaker 1 positive interface.
(4) SPK1-: Speaker 1 negative port.
(5) SPK2 : Speaker 2 positive interface.
(6) SPK2-: Speaker 2 negative port.

Product Description
Use the front line to connect two 50W speakers.
(1) After power on, the indicator light is on for about 2 seconds and then enters the Bluetooth connection mode. At this time, the indicator light flashes quickly (flashing once every 1 second), and the flashing time is about 14 seconds.
(2) After the fast flashing ends, it enters the waiting pairing mode. At this time, the light flashes slowly (flashing once every 2 seconds) for between 40 seconds and 5 minutes. During the slow flashing period, a piece of pure music will be played automatically and repeatedly, and after the slow flashing, it will enter the fast flashing again, and so on. (To connect to the Bluetooth during the slow flashing, you need to press the play/pause button to enter the fast flashing to click on the phone for Bluetooth pairing connection) After the Bluetooth and the phone are successfully connected, the indicator light is always on and the pure music stops playing.
(3) After the mobile phone is disconnected from the Bluetooth, the light flashes quickly for about 3 seconds and then enters the playing pure music mode. At this time, the indicator light flashes slowly.
(4) The minimum volume can be adjusted to no sound. When the maximum volume is adjusted, a piercing sound means that it has been adjusted to the maximum. To adjust from the maximum volume to the minimum volume, you need to press the volume down key 30 times; vice versa.
Product parameters:
(1) Operating voltage range: DC 8～24V.
(2) Number of channels: dual channels.
(3) Adaptation speaker impedance: 4-12Ω.
(4) Adapted speaker power: 30-50W (to be determined).
(5) Transmission distance (open area): 15 meters.
Pin function:
(1) POWER-: GND.
(2) POWER : VCC.
(3) SPK1 : Speaker 1 positive interface.
(4) SPK1-: Speaker 1 negative port.
(5) SPK2 : Speaker 2 positive interface.
(6) SPK2-: Speaker 2 negative port.

Features:
1. Use with D1 MINI
2.11XI/O pin
3.1XADC pin (input 0-3.3V)
4. Support OTA online

Module features:
1. With optocoupler isolation, the control signal is isolated from the power supply of the controlled device, which greatly improves the interference.
2. Compatible with MCU and Arduino light control board, 3V or 5V signal
3. Start at high level, stop at low level, PWM speed regulation
4. It is widely used to control the start and stop of motors, solenoid valves and other branch equipment
5. There are various specifications of MOS tubes to provide options,
E.g
FR120N: 100V 9.4A
LR7843: 30V 161A
AOD4184: 40V 50A
6. The signal input side can weld the terminal or pin by itself, compatible with breadboard
7. The output can be welded to the terminal or directly to the wire
8. Module size 23mm X 16mm has two 2mm diameter screw holes, the hole spacing is 8mm

Module features:
1. With optocoupler isolation, the control signal is isolated from the power supply of the controlled device, which greatly improves the interference.
2. Compatible with MCU and Arduino light control board, 3V or 5V signal
3. Start at high level, stop at low level, PWM speed regulation
4. It is widely used to control the start and stop of motors, solenoid valves and other branch equipment
5. There are various specifications of MOS tubes to provide options,
E.g
FR120N: 100V 9.4A
LR7843: 30V 161A
AOD4184: 40V 50A
6. The signal input side can weld the terminal or pin by itself, compatible with breadboard
7. The output can be welded to the terminal or directly to the wire
8. Module size 23mm X 16mm has two 2mm diameter screw holes, the hole spacing is 8mm

Module features:
1. With optocoupler isolation, the control signal is isolated from the power supply of the controlled device, which greatly improves the interference.
2. Compatible with MCU and Arduino light control board, 3V or 5V signal
3. Start at high level, stop at low level, PWM speed regulation
4. It is widely used to control the start and stop of motors, solenoid valves and other branch equipment
5. There are various specifications of MOS tubes to provide options,
E.g
FR120N: 100V 9.4A
LR7843: 30V 161A
AOD4184: 40V 50A
6. The signal input side can weld the terminal or pin by itself, compatible with breadboard
7. The output can be welded to the terminal or directly to the wire
8. Module size 23mm X 16mm has two 2mm diameter screw holes, the hole spacing is 8mm