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10pcs/lot USB to RS485 485 Converter Adapter Support Win7 XP Vista Linux Mac OS WinCE5.0

pecifications
Introductionto1602-characterLCD
1602LCDmaintechnicalparameters:
1.displaycapacity:16x2characters
2.chipworkingvoltage:4.5-5.5V
3.current:2.0mA(5.0V)
4.moduleoptimumworkingvoltage:5.0V
5.charactersize:2.95x4.35(WxH)mm
2.themoduleweight:57g
1.module:20.5mmx41mm

Model: GY - 511
Size: 14.5 mm * 20.5 mm
Name: LSM303DLHC module (three axial magnetic field triaxial acceleration)
Chip built-in 12 bit AD converter, a 16-bit data output
Using high quality heavy gold PCB, machine welding process to ensure quality

The balance board is suitable for  the li-ion battery pack BMS WHICH without  balance function,so as to  equalizing charge lithium battery charge function, make the battery pack each series charge at the same time.
Note:The balancing board must need BMS to use together,and the BMS is without balancing function
Parameter:
Balance Voltage for each single cell: 4.2V
Balance current for each single cell :66mA
Size: L25mm*W22mm
Balancer is just a Auxiliary function, The balancing means when the battery charging,each series battery need with the same voltage.when ONE cell voltage get 4.2V ,the other cells not, the first cell voltage will discharge to wait the other cells rising to the same level.
Note:
battery internal resistance differences within 5 milliohm, voltage within 0.03 V voltage, capacity vary within 50 ma
Cut-off  Voltage is according to the BMS setting.
Note:the balancer starts balancing when the one cell get 4.2V, The Cut-off  Voltage is according to the BMS setting,but the bms cut-off voltage needs more than 4.25V which is much better.
4S  Cnnection instruction:
B4    Connect battery positive;
B3    Connect the point between battery 1 and battery 2;
B2    Connect the point between battery 2 and battery 3;
B1    Connect the point between battery 3 and battery 4
B-     Connect battery negative;

Description:
Material: Electrical components
Color: See pictures
ZB2L3 battery capacity tester discharge type 1.2-12V external load capacity of the battery and other tests 18650
Tools, single-function, by controlling the load off and get real-time integrated discharge current capacity results
Maximum support 15V 3A discharged through the discharge voltage and current, itself does not discharge
Maximum capacity statistics support 9999Ah (9999000mAh)
Automatically identify and develop appropriate battery termination voltage can also be manually adjusted
Specifications:
Power supply voltage: DC4.5-6V (micro USB connector)
Operating Current: less than 70mA
Discharge voltage: 1.00V-15.00V 0.01V resolution
Termination voltage range: 0.5-11.0V
Supported by current: 3.000A 0.001A resolution
Maximum voltage measurement error: 1% 0.02V
Maximum current measurement error: 1.5% - 0.008A
Maximum battery capacity range: 9999Ah (1Ah = 1000mAh) greater value by shifting the decimal point to switch, when the display is less than 10Ah X.XXX, as shown above to achieve 10Ah XX.XX, and so on.
Board size: 50mmX37mm
Finished Size: 50mmX37mmX17mm (length X width X height maximum position size, contains copper foot height)
Instructions:
1. The first test should be fully charged battery.
2. Connect the battery to be tested positive to positive input, a negative input to the negative, can not be reversed (with load reversal may damage the circuit)! Load connected to the output of the positive and negative output, to work through the tester micro USB power supply (not available desktop or laptop USB powered), then the battery voltage.
3. Direct start test need only one press of the "OK" button, the tester can automatically develop an appropriate termination voltage of the battery full charge voltage, and will start flashing after the test three times. Need to develop artificial termination voltage only when the battery voltage display state by pressing " " or "-" buttons to modify the termination voltage display beginning with P, behind the representative voltage resolution 0.1V, set up after pressing the "OK "start testing.
4. After the start of the test the tester will control the load of the electronic switch is turned on, the test data shows that the process will release capacity (Ah), current discharge current (A) and battery voltage (V) between the wheel was. When the battery voltage reaches the set cut-off voltage, load control switches off the tester display data stays in capacity (Ah) and above and the corresponding indicator flashes quickly together, now displays the actual capacity of the battery is discharging capacity, about the press "OK" to terminate flashing allows stable data display, press again "OK" button to return to the power-on state can just replace the battery test the next section ......
Error codes and their meanings:
Err1: battery voltage is above 15V
Err2: battery voltage is lower than the termination voltage
Err3: Battery can not afford to load or discharge current line too much resistance
Err4: overcurrent (current exceeds 3.1A)
Note:Use the resistance of the discharge process, resistive load will seriously heat, please pay attention to safety!
This circuit voltage in order to improve the measurement accuracy, specially designed DC bias, when the terminal displays nothing then a small voltage does not affect the actual measurement, if you are shorting the input terminals (absolute 0V) will show 0

The baby description
1 sensor adopts TR5000, high sensitivity
2 sensitivity adjustable digital potentiometer to adjust (blue)
3 modules can induction block from 0 to 3 cm
4-5 V working voltage of 3.3 V
5 a output form the output analog voltage (0 to 5 v)
B digital switch output (0 and 1)
6 has a fixed bolt hole, the work of the installation
Seven small board PCB size: 3.5 cm * 1.5 cm
8 the power indicator light (red) and digital switch output indicator light (green)
9 comparator USES the LM393 chips, work stability
Three small plate interface specifications wire (4)
1 VCC external 3.3 V to 5 V
2 GND external GND
3 DO small plate digital output interface (0 and 1)
4 small AO plate analog output interface (0 to 5 v)
Four instructions
The module can be 1 2 intelligent tracing car obstacle avoidance, material testing, color detection
2 modules in shining or keep out the short is greater than the set threshold the DO output high level, the when the module block short is less than the setting threshold, the module D0 output low level;
3 small plate digital output D0 can be attached directly to the microcontroller, through single chip microcomputer to detect the high and low level, thus to detect been the modules are triggered.
4 small plate digital output DO can directly drive our relay module, which can be composed of a photoelectric switch;
5 small plate analog output can AO and AD modules are linked together, through the AD conversion, the can module are obtained and the obstructions of short.

Description:
Dimension: 3.2cm x 2.4cm x 1.8cm (approx)
Infrared sensor with control circuit board
The sensitivity and holding time can be adjusted
Working Voltage Range: DC 4.5V- 20V
Current drain:<60uA
Voltage Output: High/Low level signal:3.3V TTL output
Detection distance: 3--7M(can be adjusted)
Detection range: <140°
Delay time: 5-200S(can be adjusted, default 5s -3% )
Blockade time: 2.5 S (default)
Trigger: L: Non-repeatable trigger H: Repeat Trigger (default)
Work temperature:-20- 80°C
Trigger Method: L unrepeatable trigger / H repeatable trigger

Size: 10 mm * 50 mm
Weight: 2.5 g
Technical parameters:
Supply Voltage: DC4-7 v
The Communication interface: IO Control

Specifications:
Working voltage: 12V
Size: 53*31mm
Color: blue
Material: electric components

Features :
100% Brand New
Voltage: DC 6-36V
Output current: 300mA
3 Wire
Polarity: NPN
Dimention: M12x10x55mm
Detection Distance: 4 mm
Ouput Status: Normally Open
Part number: LJ12A3-4-Z/BX
Detection objects: Conductor

 
The module is a 12-pin display module with a 4-point common digital tube (0.36 inch) with a clock point. The driver chip is TM1637. It only needs 2 signal lines to enable the MCU to control the 4-bit 8- Segment digital tube.
The module features are as follows:
Display device is 4-digit yang red digital tube
Digital tube 8-level grayscale adjustable
Control interface level can be 5V or 3.3V
4 M2 screw positioning holes for easy installation
Project

Minimum value

Typical value

Maximum

Unit
Voltage

3.3

5

5.5

VDC
Current (@5V)

-

30

80

mA
Size

42X24X12

Mm
Weight

8

g
Control interfaceA total of 4 pins (GND, VCC, DIO, CLK), GND is ground, VCC is the power supply, DIO is the data input and output pin, CLK is the clock signal pin;
Digital Tube: 4-digit common anode with a 0.36-inch digital tube with a score point, highlighted in red;
Positioning hole: 4 M2 screw positioning holes, the hole diameter is 2.2mm, which makes the module easy to install and position, and realize the module combination;
Overview of the library routines:
1. ClockDisplay: Use the timer 1 of the MCU on the motherboard to time and let the 4-digit display display.
2. NumberFlow: 0~9, A, b, C, d, E, F and other 16 characters flow from right to left.
3. StopWatch: Use the timer 1 of the MCU on the motherboard to time, and use the button to realize the stopwatch function.
 
Experiment equipment:
An Ard uino compatible motherboard Cat duino (not familiar with open source hardware can be understood as the Atmega328P microcontroller development board) and a mini USB cable;
1 4-digit digital tube display module;
4 male to female DuPont lines for connecting the control interface of the module and the Cat duino development board;
Experimental procedure:
1. Use 4 male to female DuPont lines 4-digit digital display module Connected to Cat duino, as shown in the following table and figure
Cat duino

Cable

4-digit digital display module
GND

black line

GND
5V

Red line

VCC
D2

Yellow line

DIO
D3

White line

CLK
 
2. Connect the Catduino with mini USB. If you are using the motherboard for the first time, its USB to serial driver can find the USB Drivers from the drivers in the Ard uino IDE directory.
3. Reopen the Ard uino IDE and click the Open button on the toolbar to open the NumberFlow routine in DigitalTube.
Select the serial port, board name, click the Burn button, you can burn. This routine can make 16 characters from 0~9, A, b, C, d, E, F, etc. flow from right to left.
The function of adjusting the gray scale of the digital tube is the set() function in the class TM1637, and the input parameter is 0~7. The larger the number, the higher the brightness.

Module Description
The sensor module adaptable to ambient light, having a pair of infrared emitting and receiving tubes, transmitting tubes emit infrared certain frequency, when the direction of an obstacle is detected (reflection surface), the infrared reflected is received by the reception tube, After a comparator circuit processing, the green light is on, but the signal output interface output digital signal (a low-level signal), you can adjust the detection distance knob potentiometer, the effective distance range of 2 ~ 30cm, the working voltage of 3.3V- 5V. Detection range of the sensor can be obtained by adjusting potentiometer, with little interference, easy to assemble, easy to use features, can be widely used in robot obstacle avoidance, avoidance car, line count, and black and white line tracking and many other occasions.
Module Parameters
When the module detects an obstacle in front of the signal, the green indicator lights on the board level, while the OUT port sustained low signal output, the module detects the distance 2 ~ 30cm, detection angle 35 °, the distance can detect potential is adjusted clockwise adjustment potentiometer, detects the distance increases; counterclockwise adjustment potentiometer, reducing detection distance.
2, the sensor active infrared reflection detection, target reflectivity and therefore the shape is critical detection distance. Where the minimum detection distance black, white, maximum; small objects away from a small area, a large area from the Grand.
3, the sensor module output port OUT port can be directly connected to the microcontroller IO can also be directly drive a 5V relay; Connection: VCC-VCC; GND-GND; OUT-IO
4, comparators LM393, stable;
5, the module can be 3-5V DC power supply. When the power is turned on, the red power indicator lights;
6, with the screw holes 3mm, easy fixed installation;
7, board size: 3.2CM * 1.4CM
8, each module has been shipped threshold comparator voltage adjusted by potentiometer good, non-special case, do not adjustable potentiometer.
Module Interface Description
1 VCC 3.3V-5V external voltage (can be directly connected to 5v and 3.3v MCU MCU)
2 GND GND External
3 OUT small board digital output interface (0 and 1)

1 , on-board MAX485 chip , is a tool for RS-485 communications , low-power , Slew-Rate Transceiver
2 , onboard then 5.08 (mm) pitch 2P terminal for easy wiring RS-485 communication
3 , the chip has drawn all of the pins can be controlled by the microcontroller operation
4, Working voltage : 5V
5 , board size : 44 (mm) x14 (mm)

Size:32mm*17mm*8mm(length*width*height)
Main chip:LM393, Electret condenser microphone
Working voltage: DC 4-6V
Signal output indication
Single channel signal output
The output effective signal is low level
When there is sound, outputs low level and the signal light
Can be used for Acoustic control light , give sound and light alarm working with Photosensitive sensor ,and sound control, sound detect
Circuit board output switch quantity
Note: The Maximum induction distance is 0.5

Supports Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
Supports 8 independent sockets simultaneously
Supports Power down mode
Supports Wake on LAN over UDP
Supports High Speed Serial Peripheral Interfac(SPI MODE 0, 3)
Internal 32Kbytes Memory for TX/RX Buffers
10BaseT/100BaseTX Ethernet PHY embedded
Supports Auto Negotiation (Full and half duplex, 10 and 100-based )
Not supports IP Fragmentation
3.3V operation with 5V I/O signal tolerance
LED outputs (Full/Half duplex, Link, Speed, Active)
48 Pin LQFP Lead-Free Package (7x7mm, 0.5mm pitch)
Specifications:
Chip type: W5500
Supports both 3.3V & 5V.
Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
10BaseT/100BaseTX Ethernet PHY embedded
Supports automatic response (full duplex / half duplex mode)
Supports 8 independent sockets simultaneously
Internal 32Kbytes Memory for Tx/Rx Buffers
Power off mode: support
Network wake: support
SPI interface (SPI MODE 0, 3),convenient connection with MCU
Size: 55mm x 28mm
Description:

Support for the Arduino IDE 1.0 (OSX/Win/Linux)
1. Power via USB or External Source - 5v or 7-35v (12v or less recommended,
automatic selection)
2. On-board 500ma 5V Regulator
3. Built-in USB
4.  26 I/O Pins (2 are used for USB only if your program actively communicates over  USB, otherwise you can use all 6 even if you are programming via USB)
5. 8k Flash Memory (about 6k after bootloader)
6. I2C and SPI
7. 26-PWM (26 pins with Software PWM,only two(D9,D10) with hardware PWM )
8.  ADC on 8 pins
9.  Power LED and Test/Status LED
10. Size(mm):44.5x18.3x3
 

152
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R307 fingerprint module
 
1 Integrated image collecting and algorithm chip together, ALL-in-One
2 Fingerprint reader can conduct secondary development, can be embedded into a variety of end products
3 Users can conduct secondary development, can be embedded into a variety of end products, such as: access control, attendance, safety deposit box, car door locks
4 Low power consumption, low cost, small size, excellent performance
5 Professional optical technology, precise module manufacturing technics
6 Good image processing capabilities, can successfully capture image up to resolution 500 dpi
7 Finger  detection function
 
Specification:
Type: Optical 
Sensor Life: 100 million times
Static indicators: 15KV
Backlight: Blue
Interface: USB20/UART(TTL logical level)
RS232 communication baud rate: 9600BPS~115200BPS changeable
Image Capture Surface 15×11(mm)
Verification Speed:  02 sec
Scanning Speed: 03 sec
Character file size:  256 bytes
Template size:  512 bytes
Storage capacity: 1000
Security level: 3 (1,2,3,4,5(highest))
False Acceptance Rate (FAR) :≤00001%
False Rejection Rate (FRR): ≤01%
Resolution 500 DPI
Voltage :42--6VDC (or 33V)
Working current: Typical ≤75mA
Matching Method:  1: N
Operating Envirement Temperature: -20 to 50 degrees
 
You can dowload R307 user manual from the following website:
https://wwwdropboxcom/sh/orprmb3bgb6lqb6/AACpiIXOF91R7-RQ9OkD4JXha?dl=0
 
 
For shipping list, please see the following photo:

165
end
Introduction:
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: *128 cm*32 cm *13 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 → P22
CS → P21
CLK → P20
Shipping list:
1MAX7219 dot matrix module  (tested well)
220CM Dupont line*5P
 

153
end
Specifications:
1Single lead heart rate monitor
2AD8232 is an integrated front end, applicable to the heart of the biological electrical signal to carry out a letter
3The number of conditioning to carry out heart rate monitoring
4Ensure the performance of the rated temperature range of 0 to 70 degrees C, the operating temperature range of -40 to 85
5IC Compatible
Working on the principle:
1An integrated signal conditioning module for ECG and other bio electrical measurement applications The device is designed to extract, amplify and filter weak biological electrical signals in the case of noise generated by moving or remote electrode placement The design enables ultra low power analog-to-digital converter (ADC) or embedded microcontroller to easily capture the output signal
2AD8232 using bipolar point high pass filter to eliminate motion artifacts and electrode half cell potential The filter is tightly coupled with the instrument amplifier structure, which can realize the single stage high gain and high pass filter, thus saving the space and the cost
3AD8232 uses a non operational amplifier to create a three pole low pass filter, eliminating the additional noise Users can meet the needs of different types of applications by selecting the cut-off frequency of all filters
In order to improve the system circuit frequency and other undesirable interference of the common mode rejection performance, AD8232 built in an amplifier for the right side driver (RLD) and other drive lead applications
4AD8232 contains a fast recovery function, you can reduce the long high pass filter to establish the long tail phenomenon If the amplifier rail voltage signal mutation (such as the lead out of the case), AD8232 will automatically adjust to a higher filter cutoff state This feature allows the AD8232 to achieve rapid recovery, and thus the lead connection to the measurement of the object can be achieved as soon as possible after the measurement of the value
Application
Fitness and exercise heart rate monitoring
Portable ECG
Remote health monitoring
Game peripherals
Bio electrical signal acquisition
Pin number pin name Description
1 HPDRIVE high pass driver output The capacitor should be connected to the first high pass filter in HPDRIVE
AD8232 driver this pin to keep the HPSENSE at the same level as the reference voltage
2 IN instrumentation amplifier positive input IN is usually connected to the left arm (LA) electrode
3 - IN instrumentation amplifier negative input - IN is usually connected to the right arm (RA) electrode
4 RLDFB right leg driver feedback input RLDFB is the right leg driver circuit feedback pin
5 RLD right leg driver output The drive electrodes (usually for the right leg) should be connected to the RLD pin
6 SW fast recovery switch pin This pin should be connected to the output of the second high pass filter
7 OPAMP op amp inverting input
8 REFOUT reference voltage buffer output Instrument amplifier output reference this potential
REFOUT should be used as a virtual ground for any point in a circuit that requires a reference signal
9 - OPAMP operational amplifier inverting input
10 OUT op amp output This output provides a fully conditioned heart rate signal
OUT can be connected to the input side of the ADC
11 LOD - lead off output end of the comparator Fall detection mode in DC lead, and when the IN electrode is disconnected,
LOD - in the high state, otherwise it is in a low state In the exchange of lead off detection mode, LOD is always in the low state
Lead off comparator output In the DC lead off detection mode, when the IN electrode is disconnected, the LOD is in a high level,
On the contrary, it is in a low level state In the exchange of lead off detection mode, and when the IN or IN electrode is disconnected, LOD is in a high level state,
When these two electrodes are connected, they are in a low level state
12 LOD
13 SDN shutdown control input Driving the SDN to a low level, which can be turned into a low power shutdown mode
14 AC/DC lead off mode control input For DC lead off mode, the AC/DC pin should be driven to a low level
For the AC lead off mode, the AC/DC pin should be driven to the highest level
15 FR fast recovery control input FR drive to the high level can be fast recovery mode; otherwise, it should be driven to a low level
16 GND power supply
17 VS supply pin
18 REFIN reference voltage buffer input REFIN (high impedance input pins) can be used to set the level of the reference voltage buffers
19 IAOUT instrumentation amplifier output pin
20 HPSENSE instrumentation amplifier for high pass detection input
HPSENSE is connected to the R and C nodes that are set at the turn frequency of the DC blocking circuit
EP exposed pad The exposed pad should be GND or not connected
Package Included:
1x NEW AD8232 Ecg physiological measurement pulse heart Ecg Monitor Sensor Module

Notice: The new tracking number for CHINAL Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking infoThe same product will arrive in 15 to 60 days
Tracking info of  China Post Ordinary Small Packet Plus can be check here: www17tracknet/en
33V/5V MB102 Breadboard power module MB-102 830 points Solderless Prototype Bread board kit 65 Flexible jumper wires
Package Included: 
1LOT=3PCS
1PCS 65 Root Breadboard Cables
1PCS MB-102 Color breadboard
1PCS Breadboard power module
 
 

befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking infoThe same product will arrive in 15 to 60 days
 
 
Tracking info of  China Post Ordinary Small Packet Plus can be check here: www17tracknet/en
 
Crystal Breadboard 830 Point Solderless PCB Bread Board MB-102 MB102 With color bar Test Develop DIY 165*55cm
 

Form-factor - Mega PRO,
microcontroller - ATmega 2560 (16Mhz),
USB-UART interface - CH340G (12Mhz),
Input voltage - 6-9V (normal 6-8V),
PC connection socket - MicroUSB,
70 digital I/O,
16 analog inputs,
14 PWM,
4 bus of UART
Form-factor - Mega PRO,
microcontroller - ATmega 2560 (16Mhz),
USB-UART interface - CH340G (12Mhz),
Input voltage - 6-9V (normal 6-8V),
PC connection socket - MicroUSB,
70 digital I/O,
16 analog inputs,
14 PWM,
4 bus of UART
Form-factor - Mega PRO,
microcontroller - ATmega 2560 (16Mhz),
USB-UART interface - CH340G (12Mhz),
Input voltage - 6-9V (normal 6-8V),
PC connection socket - MicroUSB,
70 digital I/O,
16 analog inputs,
14 PWM,
4 bus of UART
Form-factor - Mega PRO,
microcontroller - ATmega 2560 (16Mhz),
USB-UART interface - CH340G (12Mhz),
Input voltage - 6-9V (normal 6-8V),
PC connection socket - MicroUSB,
70 digital I/O,
16 analog inputs,
14 PWM,
4 bus of UART

WeMOS Mega WiFi R3 ATmega2560 ESP8266 USB-TTL For Arduino Mega NodeMCU
Features:
Full integration on one board: Mega R3 ATmega2560 and WiFi ESP8266 with memory 32Mb (megabyte)
All of the modules can work together or each separately And everyone has their own pinout headers
The convenient solution for the development of new projects requiring Uno and WiFi
Via USB you can update sketches and firmvare for ATmega2560 and for ESP8266 For this on board have the USB-serial converter CH340G
Use this board is very simple
The board has DIP-switch, to connect the modules
For example, to: USB and ATmeg2560, USB and ESP8266, ATmega2560 and ESP8266
 
Table DIP- Switch:
 
Connection                                                                                       DIP
                                                                 1            2           3             4            5             6              7
ATmega2560<->ESP8266                         ON         ON        OFF       OFF        OFF        OFF          OFF
USB <->ATmega2560                               OFF        OFF       ON        ON         OFF        OFF          OFF
USB<->ESP8266 (Update firmware or sketch) OFF  OFF       OFF       OFF        ON         ON           ON
USB<->ESP8266 (communication)            OFF        OFF       OFF       OFF        ON         ON           OFF
All independent                                        OFF        OFF       OFF       OFF        OFF        OFF          OFF
 
Special solution:
USB <->ATmega328<-> ESP8266
                                                                                       DIP                                        SWITH 2
Connection                                          1       2       3      4      5         6           7
 
USB <-> ATmega2560<-> ESP8266    ON    ON    ON  ON   OFF    OFF       OFF          To RXD3/TXD3
 
 
USB converter CH340G connect to RX0/TX0 of ATmega2560
ESP8266 connect to RX3/TX3 of ATmega2560
 
Size: 105x53cm/413x209inch
Quantity: 1 Pc
 
Note:
Please allow 1-3mm error due to manual measurement pls make sure you do not mind before you bid
Due to the difference between different monitors, the picture may not reflect the actual color of the item Thank you!
 
Package Contents:
1 Pc x Mega WiFi Board

Notice: The new tracking number for CHINA Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking infoThe same product will arrive in 15 to 60 days
Tracking info of  China Post Ordinary Small Packet Plus can be check here: www17tracknet/en
New Motor Smart Robot Car Chassis Kit Speed Encoder Battery Box 2WD For Arduino
2WD smart car upgrade :
13D installation drawings
2 Upgrade the code disk , improve the structure of precision from the original 10 cells, 20 cells upgraded to make double precision and strength Installation will no longer appear when there were no breakage ( Optical processing costs would more than double )
Our factory uses a special magnetic motor 130 motor, rather than the general market, the S \u0026 P Magneto , in the same circumstances operating current , torque is two to three times the original cost increase a lot, plus the amount does not increase
4 We will be using the motor car had EMC test motor
Some friends found a good time to make the smart car circuit design , connecting with the program is correct, but the chaos is the sensor is triggered , the microcontroller program is not working properly Check for a long time to no avail , then I assure you , is your system is sent to the motor brushes spark interferes We had been using EMC testing of DC motors Interference phenomenon does not occur Motor Our shop has been using this motor ( not previously emphasized only )
Invoice :
A car chassis
Trolley wheels 2
DC Gear Motor 2
Speed encoder 2
Fasteners 4
Caster 1
Four batteries box 1
A high-quality rocker switch
An assembly drawing
Several screws and nuts
Trolley Size:
The bevel see the car chassis
With four battery compartment, switch with switch convenient system!
With tachometer code disk: can be used to go away if the measured speed feedback effects
We have 51 single-chip systems, L298N drive four tracking module in conjunction with the car (Able to achieve such tracing obstacle avoidance function)

520
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Package Included:
1 x Small passive buzzer module KY-006
1 x 2-color LED module KY-011
1 x Hit sensor module KY-031
1 x Vibration switch module KY-002
1 x Photo resistor module KY-018
1 x Key switch module KY-004
1 x Tilt switch module KY-020
1 x 3-color full-color LED SMD modules KY-009
1 x Infrared emission sensor module KY-005
1 x 3-color LED module KY-016
1 x Mercury open optical module KY-017
1 x Yin Yi 2-color LED module 3MM KY-029
1 x Active buzzer module KY-012
1 x Temperature sensor module KY-013
1 x Automatic flashing colorful LED module KY-034
1 x Mini magnetic reed modules KY-021
1 x Hall magnetic sensor module KY-003
1 x Infrared sensor receiver module KY-022
1 x Class Bihor magnetic sensor KY-035
1 x Magic light cup module KY-027
1 x Rotary encoder module KY-040
1 x Optical broken module KY-010
1 x Detect the heartbeat module KY-039
1 x Reed module KY-025
1 x Obstacle avoidance sensor module KY-032
1 x Hunt sensor module KY-033
1 x Microphone sound sensor module KY-038
1 x Laser sensor module KY-008
1 x 5V relay module KY-019
1 x Temperature sensor module KY-001
1 x Temperature sensor module KY-028
1 x Linear magnetic Hall sensors KY-024
1 x Flame sensor module KY-026
1 x Sensitive microphone sensor module KY-037
1 x Temperature and humidity sensor module KY-015
1 x XY-axis joystick module KY-023
1 x Metal touch sensor module KY-036
1 x Box
 is a leading independent distributor of electronic components in China,specializing in serving leading OEM/ODM/CEM electronic manufactures with supplying Active Parts (ICs, Memory, Chips, Diodes and Transistors etc) and Passive parts (Capacitors, Resistors and Inductors etc)  
 
 
If you buy more quantity, Please contact us
buy more parts used the "Add to cart" we will make the discount for you
•

500PCS NEW F8 8mm 05W 30-32V Straw hat LED White Super bright LED lamp Wide Angle Transparent LED Lamp Strawhat LED

134
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38khz MCU learning board IR remote control Infrared decoder for protocol remote control For arduino MP3 MP4
shippng wihtout the battery
shippng wihtout the battery !!!
 
 
•

799
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Notice: The new tracking number for China Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking infoTracking info of  China Post Ordinary Small Packet Plus can be check here : www17tracknet/en 
100% brand new and high quality Pin Header Strip
Gender of Connector: Female
Pitch 254mm
Number of Pins: 40 Pin
Type of Row: Single-Row
Type of connector: Straight
Package Included: 10 x 40Pin 254mm Single Row Straight Female Pin Header Strip

100pcs APA106 F5 5mm RGB LED Chips Integrated RGB LEDs (like WS2812B) APA106 round hat Full color LEDs

188
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Free Shipping 10PCS TEC1 12706 12v 6A TEC ThermoelectricCooler Peltier (TEC1-12706)                                            
 
Specification: 
Model: TEC1-12706 
Size: 40mm x 40mm x 4mm 
Operates from 0~152V DC and 0~6A 
Operates Temperature: -30 to 70 
Max power consumption: 60 Watts 
Original box: NO 
Net weight: 22g 
Color: White
                                                    
buy more parts used the "Add to cart" we will make the discount for you

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1 ×400 holes Breadboard
5 ×3 colors of LED lights(random)
10×Resistor 220ohm
10×Resistor 1K
10×Resistor 10K
10×Resistor 100K
2 ×Photoresistor 5516
6 ×Button(with the mixed color caps)
1 ×9V Batteryt Connector

measuring range position:
1 Crange Capacitance (001pF-10uF)
2 L range Inductance (0001uH-100mH)
3 HL range Big inductance (0001mH-100H)
4 HC range Big capacitance range (1uF-100mF)
All files position are automatic measuring ranges, it is easy to operate
NOTE:
1 Please reset to “0” before testing a capacitance or an inductance, or errors may be appeared Even if “0” displayed before measuring, resetting to “0” is needed
2 At the time of resetting to “0”, when“CALCULATINGOK” appeared, please keep pressing for 2 to 3 seconds, and the parameter written to “” will be prompted, then release
3 Resetting to “0” is forbidden as components are being measured If you do it, please shut down immediately and restart, then reset to “0”
4 The time of measuring a big capacitance (above 10mF) may be more than one second, and it needs seven to eight seconds to get the measured value of the capacitance (100mF)
5 Forbid to measure a capacitance which is not discharged, otherwise it may damage the mainframe

Notice: The new tracking number for CHINA Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking info  The same product will arrive in 15 to 60 days
 
Tracking info of China Post Ordinary Small Packet Plus can be check here  :  www17tracknet/en
 
Product Features:  
Brand new 37 in 1 Sensor Kits for Arduino
Material: Circuit board
Includes basic components and sensors
Compatible with  
Specifications:                                                                                           
37-in-1 Sensor Module Kit
 
Package Include:
1 x Small passive buzzer module
1 x 2-color LED module
1 x Hit sensor module
1 x Vibration switch module
1 x Photo resistor module
1 x Key switch module
1 x Tilt switch module
1 x 3-color full-color LED SMD modules
1 x Infrared emission sensor module
1 x 3-color LED module
1 x Mercury open optical module
1 x Yin Yi 2-color LED module 3MM
1 x Active buzzer module
1 x Temperature sensor module
1 x Automatic flashing colorful LED module
1 x Mini magnetic reed modules
1 x Hall magnetic sensor module
1 x Infrared sensor receiver module
1 x Class Bihor magnetic sensor
1 x Magic light cup module
1 x Rotary encoder module
1 x Optical broken module
1 x Detect the heartbeat module
1 x Reed module
1 x Obstacle avoidance sensor module
1 x Hunt sensor module
1 x Microphone sound sensor module
1 x Laser sensor module
1 x 5V relay module
1 x Temperature sensor module
1 x Temperature sensor module
1 x Linear magnetic Hall sensors
1 x Flame sensor module
1 x Sensitive microphone sensor module
1 x Temperature and humidity sensor module
1 x XY-axis joystick module
1 x Metal touch sensor module
If   you buy more quantity, Please contact us
buy more parts used the "Add to cart" we will make the discount for you
•

398
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Features:
100% New and High Quality
Model: SIM800L
Work voltage: 37~5V
Network support: Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world
TTL serial interface compatible with 33V and 5V for MCU Microcontrollers,competible with for arduino
Package include:
1x SIM800L GPRS GSM board
1x PCB Antenna

Features:
Good quality and durable
Small size and super bright
Low heat, energy saving, low power consumption, long service life
Best replacement for traditional light sources
Can be used as light decorations, torches, toys & gifts, car decorations, light box advertising, signal indicator, etc
Specifications:
Diameter: 5mm
Emitted color: UV/ Purple
Lens Colour : Water Clear
Wave Length:395~400nm
Forward Voltage (V) : 32 ~ 38
Reverse Current (uA) : <=30
Luminous Intensity Typ Iv (mcd) : Average in 2000
Life Rating : 100,000 Hours
Viewing Angle : 20 ~ 25 Degree
Absolute Maximum Ratings (Ta=25°C)
Max Power Dissipation : 80mw
Max Continuous Forward Current : 30mA
Max Peak Forward Current : 75mA
Reverse Voltage : 5~6V
Lead Soldering Temperature : 240°C (<5Sec)
Operating Temperature Range : -25°C ~ 85°C
Preservative Temperature Range : -30°C ~ 100°C
Package:
100pcs 5mm Round UV Led Light Emitting Diode

LM1036 tone board / preamp board (Volume, treble, bass)
Product introduction:
1 Application of American semiconductor company LM1036(NS)
2 main filter capacitor adopt Taiwan brand 1000UF/25V, coupling capacitors by the top German import 047UFcapacitor
3 selection of resistanceAmerica importresistance, the signal-to-noise ratio of the good
4 PCB by 16mm thick double-sided board, 2 oz copper thickness, spray tin full process, ensure good performance of current through PCB first-class quality
5 the board layout is reasonable, beautiful appearance, the current sound small If you think other tone plate current sound big, poor quality, that this one is the best choice for you!  5 the board layout is reasonable, beautiful appearance, the current sound small If you think other tone plate current sound big, poor quality, that this one is the best choice for you!  caizhixing electronic co,ltd
6 adopt totally closed dustproof potentiometer, the performance is more stable, and more durable than ordinary potentiometer!
7 power supply input AC12 or AC15V, can also enter DC15V (choose one)
PCB size: 90*45MM
Potentiometer spacing: 20MM

20pcs APA106 F5 5mm RGB LED Chips Integrated RGB LEDs (like WS2812B) APA106 round hat Full color LEDs

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8x12 cm double Side Copper prototype breadbord pcb 8*12 protyboard for Arduino
Description:
dimension: 8*12 cm
material : double Side Copper PCB
hole pitch : standard 254mm
for point to point DIY soldering
Points:30x41
No odor
Finely drilled
Tough
Including power pad
Clean hole
Packaging List:
1 * PROTOTYPE PCB 8*12

The list of products:
A car chassis
Trolley wheels 2
DC Gear Motor 2
Fasteners 4
Caster 1
Several screws and nuts
 
If you buy more quantity, Please contact us
buy more parts used the "Add to cart" we will make the discount for you
•

 
Nano V30 controller ATMEGA328P ATMEGA328 original CH340 USB cable
Technical parameters :
112 digital input / output port D2 to D13
28 analog inputs A0 ~ A7
31 pairs TTL level serial transceiver port RX / TX
46 PWM port , D3 , D5, D6, D9 , D10 , D11
5 Atmel ATmega328P - AU MCU
6 USB download and power
7 Support the external 5V 12V DC power supply
8 To support 9V battery powered
9 support ISP download
Package include:
1PCS X Nano board with bootloader
1PCS X mini USB

Features:
1Dual trigger design, use a dedicated two-way driver IC
2Strong resist interference, use diode continued current to protect it
3The relay contact part adopts double cloth line for large current, safe and reliable
4The input and output are 508mm wiring terminals, wiring is more convenient, suitable for PLC control
5Input terminals can be arbitrarily set high and low level, the control mode is more flexible
6Equipped with fixing screw hole, easy to install
7Each way module can be set high or low triggered by jumper
Specifications:
Size: 132 x 54 x 19cm
Material: Metal
Mounting bolts holes: 4
Holes diameter: 3mm
Voltage: 5V
Maximum load : AC 250V/10A, DC 30V/10A
Interface:
VCC: Power end
GND: Ground strap
CTR1-CTR8: Signal input trigger    
Outputs:    
24 line interface, the interface can be directly connected to all leads , user-friendly
NO1-NO8: normally open relay interfaces , relay before the vacant after the pull shorted with COM
COM1-COM8: Relay Common Interface
NC1-NC8: normally closed relay interface relay shorted with COM ago , after the pull- vacant
Package Included:
1x 8 Channel Relay Module

 
 
 
 
 
 
If   you buy more quantity, Please contact us
buy more parts used the "Add to cart" we will make the discount for you
•

890
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3D Printer Kit Smart Parts RAMPS 14 12864 Controller Control Panel LCD Display Monitor Motherboard Blue Screen Module Hot Sale
 
3D printers use LCD control panel, are ramps extension accessories LCD control panel through which you can achieve spooling is the 3D model Gcode files are copied to the SD card, and then print the file via the LCD control panel This version is an upgraded version of reprap smart controller
 
Package Included:1x 12864 LCD Controller pcb board
 

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PDF:http://pdf1alldatasheetcncom/datasheet-pdf/view/407730/MICREL/MIC29302WUhtml