Computer Interface
CP2102 USB to TTL Serial Cable - Debug / Console Cable for Raspberry Pi and Arduino

Pin definition:
Red line = VCC (5V)
Black line = GND
White line = RXD
Green line = TXD
The PCB is reserved with 3.3V, CTS, DTR three pads, customers can use the self-removable shell to modify
Support system: WindowsXP, Vista, Windows 7/8 , WIN10

CP2102 USB to serial port module USB to TTL level 

USB based 2 Channel Relay USB Programmable Control Switch Module for PC Smart Home

5V 2 Channel Relay USB Programmable Control Switch Module for PC Smart Home

Input Voltage:DC5V
Input Current:>300mA
Control terminals connected mode: NC / COM / NO
PCB size: 56.5mm * 40.6mm
Fixing holes Size: 3mm
Fixing holes central moment: 52.2mm * 36.6mm

Library link:

Package Included:
1 X 5V 2 Channel Relay USB Programmable Control Switch Module

TV USB 2.0 Software Radio DVB-T RTL2832U + R820T2 SDR TV Digital Receptor Stick U40

USB 2.0 Digital DVB-T SDR+DAB+FM HDTV TV Tuner Receiver Stick RTL2832U+R820T2

100% Brand new and high quality!
R820T2+RTL2832U chip;
Support SDR;
Support DAB;
Support FM;
Support DVB-T;
Watch and record digital terrestrial TV on PC or Laptop;
Full DVB-T bandwidth reception (6/7/8 MHz);
Digital TV recording and playback as DVD quality;
Remote control;
Support Windows 2000/XP/Vista/WIN7;
Support both MPEG-2, MPEG-4(H.264) encoding;

Size :86*26*12/3.38*1.02*0.47"
Net Weight:60 g
Weight:70 g
Note: the battery is not included

Package Included:
1x DVB-T
1x Antenna
1x Remote Control

4-Port USB 2.0 Black Breakout HUB - (turn one USB Port into 4)

  • Compact and Portable
  • Four High Speed USB 2.0 Ports
  • Backwards Compatible With USB 1.1
  • Red Power LED

USB 5 Axis CNC Breakout Board with Optical Coupler for Stepper Motor Driver MACH3

Support MACH3 and other computer software that supports parallel port control
USB power supply and the separation of the external power supply to ensure computer security
External wide voltage input, 12-24V, with anti-reverse function
All the input signals are all isolated by the lotus root, can be emergency stop, knife, limit, etc., to protect computer security
One channel relay module output port, it can control the spindle switch. Output port is P17 port
All the way through the optocoupler isolated 0-10V analog voltage output, you can control the analog interface with the corresponding frequency converter to control the spindle speed
 Output port for the P1 port
Open all 17 ports, it can be connected with optocoupler drive, it can control the 5-axis stepper motor
P1 is PWM output, it can be controll the spindle governor which with a coupler input 

Package Included:
1 X 5 Axis CNC Breakout Board with Optical Coupler
1 X USB Cable

3 in 1 90 degree Left Angle Micro USB 2.0 OTG Host Adapter M to F with USB Power

90 degree Left Angle Micro USB 2.0 OTG Host Adapter M to F with USB Power

Optical Flow Mouse Sensor ADNS-3080 for Arduino APM2.52 APM2.6

The ADNS-3080 is a high performance addition to Avago Technologies’ popular ADNS family of optical mouse sensors.
The ADNS-3080 is based on a new, faster architecture with improved navigation. The sensor is capable of sensing high speed mouse motion - up to 40 inches per second and acceleration up to 15g – for increased user precision and smoothness.
The ADNS-3080 along with the ADNS-2120 (or ADNS-2120- 001) lens, ADNS-2220 (or ADNS-2220-001) assembly clip and HLMP-ED80-XX000 form a complete, compact optical mouse tracking system. There are no moving parts, which means high reliability and less maintenance for the end user. In addition, precision optical alignment is not required, facilitat- ing high volume assembly.
The sensor is programmed via registers through a four-wire serial port. It is packaged in a 20-pin staggered dual inline package (DIP).

High speed motion detection – up to 40 ips and 15g 
New architecture for greatly improved optical navigation technology 
Programmable frame rate over 6400 frames per second 
SmartSpeed self-adjusting frame rate for optimum performance 
Serial port burst mode for fast data transfer 
400 or 1600 cpi selectable resolution 
Single 3.3 volt power supply 
Four-wire serial port along with Chip Select, Power Down, and Reset pins Applications Mice for game consoles and computer gamesMice for desktop PC’s, Workstations, and portable  PC’sTrackballsIntegrated input devices .

Package Includes:
1 X Optical Flow Sensor ADNS-3080

Motherboard Mini Two-digit code Display PC Troubleshooting card Motherboard test Diagnosis card

Apply to: all have PCI or ISA interface of computer.

Record low code review functionality;

Low speed test bus;

Support for 80H, 84H, 300H port motherboards;

Compatible with all major motherboard and Low self-check function with alarm.


Multi USB 2.0 Hub Computer Extension Splitter SD Card Reader High Quality

USB 2.0 Hub Computer extension splitter Card reader

Computer Analysis PCI POST Card Motherboard LED 4-Digit Diagnostic Test PC Analyzer Network Repair Tool Kit


100% brand new and high quality.
The Card is named POST (Power On Self Test) card too. 
It could display the error code by the result of POST. 
Then you would soon determine system, or blank screen.
You can check your computer by our POST and don't have to open motherboard.
LED displays and you can see Error code table in the user manual to check your computer.
Item Type: Network Repair Tool Kit
Material: Plastic+Metal
Color: Red
Size: 80×60mm/3.15×2.36in (Approx.)
LED Size: 50×20×7mm/1.97×0.79×0.28in (Approx.)
Suitable type:
        - IBM  T20  T21  T22  T23  A21  A22  A20  DELL640  TOSHIBA  4030  etc.
Quantity: 1 Set (other accessories demo in the picture is not included)
1.Transition: 1cm=10mm=0.39inch
2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
Package includes:
1 X PC Analyzer (No retail package)
1 X English User Manual

Oscilloscope and Logic Analyzer LHT00SU1 Virtual Oscilloscope 8-ch Logic Analyzer I2C SPI CAN Uart


Dual input oscilloscope (single, 16Msps, 3MHz bandwidth)
8-channel logic analyzer
Data Logger
Dual channel voltmeter
Mixed signal oscilloscopes and logic analyzer
Frequency meter
Remote controller
PWM controller
Frequency generator
I2C controller
Pulse / edge counter
8 digital channel + 1 analog channel logic analyzer, support for multiple protocols

Analog parameters:

Number of input channels: 2 channel
Sampling channel: 1 channel
The maximum sampling frequency: 16MHz
The maximum analog bandwidth: 3MHz
Input voltage range: -10V to + 10V
Sensitivity: 78mV
Maximum vertical resolution: 256 level

Digital parameters:

Number of channels: 8
Input voltage: 0V-5.3V
Input Low level: <0.8V
Input high level: >1.4V
Supported protocols: SPI, IIC, UART, SMBus, I2S, CAN, Parallel, Custom, Search, Async, 1-Wire, PS / 2

The communication interface parameters:

USB parameters: USB2.0 high-speed 480Mbps

System requirements:

Supported operating systems Win2000 / XP / Vista / WIN7 (32bit)
Celeron 4 2.0G or Pentium 4 1.8G higher processor
Need USB2.0 high speed interface, does not support full speed USB2.0 or USB1.1
Memory Requirements 128M or more
Need 2G or more hard disk
You need to install Framework 3.5 SP1

Note: If your system is WINDOWS XP, please check whether your computer has ".NET 3.5 SP1" this component, if not, go to the Microsoft website to download and install.
WIN7 64-bit also need to install additional driver.
Please do not upgrade yourself.

Driver download: Click to open

Instruction download: Click to open

Package included:

1 x Machine
1 x Testing clamp line (with 10 test clip)
1 x USB connection line

2A 1A USB Load Resistor Tester Power Resistors Mobile Power Aging Resistance Module

Brand new and high quality.
It's normal when welding resistance may occur heated white smoke or odor phenomenon.
New products can freely be switched with a switch, very convenient and easy to use.
USB load resistance, is mainly to do discharge test, if the charger or mobile power supply output current is 2A, load meter power is 5V * 2A = 10W, if the output current is 1A, then the power load is 5V * 1A = 5W.
Switch and usb interface design.
Color: Green.
Rated Power: 5W-10W.
Technology: Ceramic Composition.
Resistance: 1A-2A.
Type: Fixed Resistor.
Size: 7.3cm x 1.8cm x 1.0cm.

Note:  Discharge resistors will become hot, the temperature at 80 ~ 85 ℃, please pay attention to  anti-scald.

You can easily test mobile power charging treasure, cell phone charger, USB power supply output current is standard, as long as the USB port to the resistance above the line. And can move the power and USB power adapter to do the aging test.

Package Included:
1 x  USB Load resistor