Friday, March 26, 2010

Inverter DC to AC

DC to AC power converter ( Inverter ), made in China, reliable and durable. Available option  in 150Watt, 200Watt & 300 Watt, input DC 12V output AC220V.

power converter for solar panel, mobile power source, combine with battery cell as backup power, etc

Tuesday, March 23, 2010

TGS 2602 - for the detection of Air Contaminants by FIGARO

TGS 2602 - for the detection of Air Contaminants by FIGARO

High sensitivity to VOCs and odorous gases
* Low power consumption
* High sensitivity to gaseous air
* Long life
* Uses simple electrical circuit
* Small size

* Air cleaners
* Ventilation control
* Air quality monitors
* VOC monitors
* Odor monitors

Energy saving lamp & Emergency lamp

Energy saving lamp & Emergency lamp VC1895L,  reliable and durable, rechargeable with 15 super bright LED

Rechargeable mini fan with torch and desk lamp LED

Rechargeable mini fan with torch and desk lamp LED (VC 5530), multipurpose, reliable and durable.

VC-716 24 LED hi bright emergency LED

VC-716 24 LED hi bright emergency LED with front torch (Big LED), reliable and durable.

VC-713 , 21 LED + 1 torch LED (Big) Emergency LED

VC-713 ,  21 LED + 1 torch LED (Big) Emergency LED , equipped bith double cell battery. reliable and durable.

Monday, March 22, 2010

LV-MaxSonar®-EZ1™ High Performance Sonar Range Finder

With 2.5V - 5.5V power the LV-MaxSonar®-EZ1™ provides very short to long-range detection and ranging, in an incredibly small package. The LV-MaxSonar®-EZ1™ detects objects from 0-inches to 254-inches (6.45-meters) and provides sonar range information from 6-inches out to 254-inches with 1-inch resolution. Objects from 0-inches to 6-inches range as 6-inches. The interface output formats included are pulse width output, analog voltage output, and serial digital output.

· Continuously variable gain for beam control and side lobe suppression
· Object detection includes zero range objects
· 2.5V to 5.5V supply with 2mA typical current draw
· Readings can occur up to every 50mS, (20-Hz rate)
· Free run operation can continually measure and output range information
· Triggered operation provides the range reading as desired 
· All interfaces are active simultaneously
· Serial, 0 to Vcc
· 9600Baud, 81N
· Analog, (Vcc/512) / inch
· Pulse width, (147uS/inch)
· Learns ringdown pattern when commanded to start ranging
· Designed for protected indoor environments
· Sensor operates at 42KHz
· High output square wave sensor drive (double Vcc)

Friday, March 19, 2010

GPS receiving module type 482J1

GPS receiving module type 482J1
- Receiving Method: Multichannel (Receiving: 15 Channel, Special search: 1 channel)
- Receiving Frequency: 1575.42 MHz (L1), C/A Code
- Sensitivity: -130dBm
- Dynamic Range: > 25dB
- Fixing Method: All in view
- Accuracy
Alone: GPS System Accuracy
Position: 10m 2dRMS (SA off, PDOP 2.5, HDOP 1.5)
Speed: 0.04 m/sec. RMS (SA off, PDOP 2.5, HDOP 1.5)
Course: 0.014 degree (SA off, speed = 60 km/h. PDOP 2.5, HDOP 1.5)
Position: 7m 2dRMS (example)
- Maximum velocity: 200 Km/h
- Interface: CMOS Level (3.3V)
- Output: TXD0 4800 bps (Position data output)
- Input: RXD0 4800 bps (Initial setting data input)
RXD1 1200 bps (DGPS Correction data input)
- Format: JRC Format R8.0
- Power: +3.3VDC
- Consumption current: 85mA typical, 95mA max

P5587 Hamamatsu photoreflector chip

Hamamatsu P5587 is photoreflector combining a high power infrared LED and low voltage photo IC consist of high sensitivity photo diode, amplifier, schmitt trigger circuit and output photo transistor, etc. on a single chip.

AD521 Precision Instrumentation Amplifier

The AD521 is a second generation, low cost, monolithic IC instrUmentation amplifier developed by Analog Devices.As a trUe instrUmentation amplifier, the AD521 is a gain block with differential inputs and an accurately programmable input/output gain relationship.

The AD521 IC instrUmentation amplifier should not be confused with an operational amplifier, although several manufactUrers(including Analog Devices)offer op amps which can be used as building blocks in variable gain instrumentation amplifier circuits. Op amps are general-purpose components which, when used with precision-matched external resistors, can perform the instrUmentation amplifier function.

An instrumentation amplifier is a precision differential voltage gain device optimized for operation in a real world environment, and is intended to be used wherever acquisition of a useful signal is difficult. It is characterized by high input impedance, balanced differential inputs, low bias currents and high CMR.

Wednesday, March 17, 2010

Long Range RFID reader for 60cm, PFH9210-60

Long Range RFID reader for 60cm, PFH9210-60
Product Description
  • RFID Proximity advanced long range reader PFH-9210-60 Proximity hand free system with High technologies performance for 60 cm .
  • The Pegasus PFH-9210-60 is a reader for vehicle or personal access application. Especially for vehicle control, the RFID Hand free card can be stick to any where within the car even through windshields and clothes but not on the metal and to get access to the gate or any electrical door, just approach to the effective distance without getting off the car or opening the window.
  • Built-in Beeper sound
  • PFH-9210-60 is reading proximity card without powerful battery for access control
  • Epoxy potted for environmental protection
  • Weather resistant and water proof
  • Dimension: 270 (L) x 270 (W) x 39 (H) mm
  • Mounting: Surface Mount, waterproof
  • Card: 125KHz EM proximity card
  • Reading Range : about 60 cm
  • Operating Temperature: -20°C ~ 60°C
  • Humidity: 10% ~ 90%RH, non condensing
  • Frequency of Operation: 125KHz
  • Interface: RS-485, RS -232C , Wiegand 42bit, Wiegand optional
  • Power Requirements: DC12V, 200 mA
  • Weight: 2kgs ± 5%

Friday, March 12, 2010

ByoBot kit with IR-remote

BYO-bots (Build Your Own Bot) are very low-cost simple robots that are built from a kit.

The BYO-bot is a great introduction to the world of robots. They have also been used as an introduction to transistor electronics, demonstrating feedback, closed-loop control, etc. BYO-bot kits have been assembled sucessfully by children in grade three and above, and even younger children (with a little parental help) have been able to put them together.

The robot can be reprogrammed in a matter of seconds. The robot can be programmed to follow a line. All the major parts of a robot (power, motors, sensors, computer, structure, etc) are plain to see and easy to work with.

DSP Starter Kit (DSK) for the TMS320VC5510

DSP Starter Kit (DSK) for the TMS320VC5510

Hardware Features
* Texas Instrument's TMS320VC5510 DSP operating at 200 Mhz.
* Embedded USB JTAG controller with plug and play drivers, USB cable included
* TLV320AIC23 codec
* 8 Megabytes of on board SDRAM
* 512K bytes of on board Flash ROM
* 3 Expansion connectors (Memory Interface, Peripheral Interface, and Host Port Interface)
* On board IEEE 1149.1 JTAG connection for optional emulator debug
* Four 3.5 mm. audio jacks (microphone, line-in, speaker, line-out)
* 4 user definable LEDs
* 4 position disp switch, user definable
* +5 Volt operation only, power supply included
* Size: 8.25" x 4.5" (210 x 115 mm), 0.062" thick, 6 layers
* Compatible with Spectrum Digital's DSK Wire Wrap Prototype Card

Software Features
* TMS320VC5510 DSK specific Code Composer Studio from Texas Instruments
* Test/sample code provided to reduce coding time
* Compatible with JTAG emulators from Spectrum Digital
* Compatible with Win 98/2000/XP

What's Included
* VC5510 DSK Board
* Code Composer Studio for VC5510 DSK
* USB Cable
* AC Power Cord(s) and Power Supply
* Quick Start Guide
* Technical Reference (includes schematics)
* Customer Support Guide

  • DSP Evaluation
  • Algorithm Development
  • Benchmarking

Thursday, March 11, 2010

ATMEGA16 8-bit AVR Microcontroller with 16K Bytes In-System Programmable Flash

The ATmega16 provides the following features: 16K bytes of In-System Programmable Flash Program memory with Read-While-Write capabilities, 512 bytes EEPROM, 1K byte SRAM, 32 general purpose I/O lines, 32 general purpose working registers, a JTAG interface for Boundaryscan, On-chip Debugging support and programming, three flexible Timer/Counters with compare modes, Internal and External Interrupts, a serial programmable USART, a byte oriented Two-wire Serial Interface, an 8-channel, 10-bit ADC with optional differential input stage with programmable gain (TQFP package only), a programmable Watchdog Timer with Internal Oscillator, an SPI serial port, and six software selectable power saving modes. The Idle mode stops the CPU while allowing the USART, Two-wire interface, A/D Converter, SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next External Interrupt or Hardware Reset. In Power-save mode, the Asynchronous Timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except Asynchronous Timer and ADC, to minimize switching noise during ADC conversions. In Standby mode, the crystal/resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low-power consumption. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run.

AT89C52 8-bit Microcontroller with 8K Bytes Flash

The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8K bytes of Flash programmable and erasable read only memory (PEROM). The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 and 80C52 instruction set and pinout.

The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C52 is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications.

The successor of AT89C52 is AT89S52

OP90 Precision Low-Voltage Micropower Operational Amplifier

The OP90 is a high performance, micropower op amp that operates from a single supply of 1.6 V to 36 V or from dual supplies of ±0.8 V to ±18 V. The input voltage range includes the negative rail allowing the OP90 to accommodate input signals down to ground in a single-supply operation. The OP90’soutput swing also includes a ground when operating from a single-supply, enabling “zero-in, zero-out” operation.

  • Single/Dual Supply Operation: 1.6 V to 36 V, +/-0.8 V to +/- 18 V
  • True Single-Supply Operation; Input and Output
  • Voltage Ranges Include Ground
  • Low Supply Current: 20 A Max
  • High Output Drive: 5 mA Min
  • Low Input Offset Voltage: 150 V Max
  • High Open-Loop Gain: 700 V/mV Min
  • Outstanding PSRR: 5.6 V/V Max
  • Standard 741 Pinout with Nulling to V–

OP37 Low Noise, Precision, High Speed Operational Amplifier (A VCL > 5)

The OP37 provides the same high performance as the OP27, but the design is optimized for circuits with gains greater than five. This design change increases slew rate to 17 V/ms and gain-bandwidth product to 63 MHz.

The OP37 brings low-noise instrumentation-type performance to such diverse applications as microphone, tapehead, and RIAA phono preamplifiers, high-speed signal conditioning for data acquisition systems, and wide-bandwidth instrumentation.

OP07 Ultralow Offset Voltage Operational Amplifier

The OP07 has very low input offset voltage (75 μV maximum for OP07E) that is obtained by trimming at the wafer stage. These low offset voltages generally eliminate any need for external nulling. The OP07 also features low input bias current (±4 nA for the OP07E) and high open-loop gain (200 V/mV for the OP07E). The low offset and high open-loop gain make the OP07 particularly useful for high gain instrumentation applications.

  • Wireless base station control circuits
  • Optical network control circuits
  • Instrumentation
  • Sensors and controls
  • Thermocouples
  • Resistor thermal detectors (RTDs)
  • Strain bridges
  • Shunt current measurements
  • Precision filters

Wednesday, March 10, 2010

The OmniDirectional Wheel

Caster wheel with omni direction, suitable for robotics applications.

Technical specifications:
Diameter 1.9"
Wide 1.3"
Maximum Load Capacity up to 25Lbs (+/- 11.2Kgs)

Monday, March 08, 2010


EVB-PIC24 Feature

- Full Duplex Data Transfer up to 6Mbps with PIC24
- Internet Application Protocols : ANSI C Source Codes such as TCP, UDP, DHCP
- By using external 96pin connectors, PIC24's all pins can be used coping with developer's needs
- Provides various application source codes : Loopback, Webserver, Ping
- Supports ICSP Interface


Base Board
RS232 serial port (1 Port)
Text LCD(Gray 16 X 2)
-128K Bytes Flash
- 8K Bytes SRAM
CLOCK 16MHz(8MHz Crystal used)
External Memory SRAM (32K Bytes)
IP101A-LF (Ethernet PHY)
Mag Jack

W5300 High Performance Hardwired TCP/IP PHY Embedded Chip

W5300 (Fully Hardwired Network protocol Embedded Ethernet Controller designed for high speed required embedded system)

Performance Benefits High Speed Data Communication : Over 50Mbps at application Layer More Stable Data Communication
Implementation Benefits Easy & Simple control like memory Save developing time and area
Cost Benefits MAC & PHY embedded into W5300
Development Benefits Easy implemented not only at the OS but also non-OS enviroment

- Supports hardwired TCP/IP protocols : TCP,UDP, ICMP, IPv4, ARP, IGMPv2, PPPoE, Ethernet
- Supports 8 independent SOCKETs simultaneously
- High network performance : Up to 80Mbps (DMA)
- Supports hybrid TCP/IP stack(software and hardware TCP/IP stack)
- IP Fragmentation is not supported
- Internal 128Kbytes memory for data communication(Internal TX/RX memory)
- More flexible allocation internal TX/RX memory according to application throughput
- Supports memory-to-memory DMA (only 16bit Data bus width & slave mode)
- Embedded 10BaseT/100BaseTX Ethernet PHY
- Supports auto negotiation (Full-duplex and half duplex)
- Supports auto MDI/MDIX(Crossover)
- Supports network Indicator LEDs (TX, RX, Full/Half duplex, Collision, Link, Speed)
- Supports a external PHY instead of the internal PHY
- Supports 16/8 bit data bus width
- Supports 2 host interface mode(Direct address mode & Indirect address mode)
- External 25MHz operation frequency (For internal PLL logic, period=40ns)
- Internal 150MHz core operation frequency (PLL_CLK, period=about 6.67ns)
- Network operation frequency (NIC_CLK : 25MHz(100BaseTX) or 2.5MHz(10BaseT))
- 3.3V operation with 5V I/O signal tolerance
- Embedded power regulator for 1.8V core operation
- 0.18 µm CMOS technology
- 100LQFP 14X14 Lead-Free Package


CAB-V35FC V.35 DCE HDD60M/V.35F , use for cisco router , V35 / Winchester Female.

CAB-V35MT hispeed serial cable

DB60 Male to Male DTE V35 CABLE CAB-V35MT
  • Cisco 72-0791-01 Male DTE V35 CAB
  • This cable has a male DB-60 connector on the Cisco end and a male Winchester connector on the network end.
  • Compatible with Cisco 7000, 4000, 3600, 2500, 1600, Access servers, and AccessPro PC cards

CAB-SS-V35FC serial hi speed cable

26 Pin Male / v.35 Female, (CAB-SS-V35FC) Cisco Smart Serial DCE Cable, This is a high quality , Male to Female serial router cable for Cisco systems. Cisco part #CAB-SS-V35FC

LEVEL1 multimode media converter 10/100

LEVEL1 10/100 ST-multimode based Tx To 100 FX Media Converter , up to 2KM.

The FVT-4002 media converter is able to convert network signals between UTP and fiber optic cable based networks. This allows extension of networks over a longer distance in both multi- and single mode via fiber-optic cabling. In multi-mode, the FVT-4002 is able to transmit signals up to 2km.The Media Converter provides a 10/100BaseT/TX auto-negotiating RJ-45 connector port that supports full duplex and half duplex switch connectivity and MDI/MDI-X Auto Crossover. The Smart Link Fault Pass-through technology enables the switch to shut down data transmission when the link connection has failed.The converter is IEEE802.3 10Base and 802.3u 100BaseTX and 100BaseFX compliant.


26 Pin Male / v.35 Male, (CAB-SS-V35MT) Cisco Smart Serial Cable.
This is a high quality Male to male serial router cable for Cisco systems. Cisco part #CAB-SS-V35MT
Technical Details

* 26 Pin Male / v.35 Male, (CAB-SS-V35MT) Cisco Smart Serial Cable, 10 ft
* Cisco Cable / Adapter
* Cisco Router Cable

Friday, March 05, 2010

used WS-C3548-XL- EN

Cisco Catalyst 3548XL Enterprise Edition - Switch - 48 ports - Ethernet, Fast Ethernet, Gigabit Ethernet - 10Base-T, 1000Base-LX, 1000Base-SX, 100Base-TX + 2 x GBIC (empty) - rack-mountable - stackable.

The Catalyst 3548 XL switch is a member of the Cisco Systems Catalyst 3500 series XL, a scalable line of stackable 10/100 and Gigabit Ethernet switches that delivers premium performance, manageability, and flexibility with unparalleled investment protection. The 3548 XL offers customers tremendous benefits through Gigabit Ethernet-based configuration options, the new Cisco Switch Clustering multidevice management architecture, and integrated IP voice and telephony support.The Catalyst 3548 XL has 48 10/100 ports and two GBIC-based Gigabit Ethernet ports. The built-in Gigabit Ethernet ports accommodate a range of GBIC transceivers, including the Cisco GigaStack GBIC, and 1000BaseSX, 1000BaseLX/LH and 1000BaseZX GBICs. The dual GBIC-based Gigabit Ethernet implementation provides customers tremendous deployment flexibility - allowing customers to implement one type of stacking and uplink configuration today, while preserving the option to migrate that configuration in the future.This is an Enterprise Edition switch. Enterprise Edition switches offer advanced software features, including complete 802.1Q and ISL VLAN support, TACACS+ security, and fault tolerance through Uplink Fast.
Product Dimensions: 15.4 x 17.5 x 1.7 inches ; weight: 10.4 pounds

Thursday, March 04, 2010

V35 to V35 Straight Cable 50 Feet

V35 to V35 Straight Cable 50 Feet.
Available Interfaces:

MT to FC, MT to MT and FC to FC , all 50 feet long.

Data Rate - Up to 10 Mbps
Protocol - Synchronous Standards - CCITT V35; ITSSI (ANSI/TIA/EIA613)
Standards - V.35 version converts ITU/CCITT V.35 or EIA-422 to HSSI (ANSI/TlA/EIA-613 Dec. "93 and ANSI/TIA/EIA-612 NOV. "93) electrically and mechanically;
Clocking - All modes supported except conversion from smooth to gapped clock
Loopbacks - Local and remote; Local DTE not available

Hyper Line Tracer Robot Kit

HYPER LINE TRACER is a robot that follows a black line drawn on white paper. The eyes of the Hyper Line Tracer is a photo interrupter which projects and receives infrared rays, white reflect them. Hyper Line Tracer distinguishes black and white by projecting infrared rays from a photo interrupter.

The robot comes with a 48 page manual that guides you through the mechanical construction stages of the unit. It also includes a full explanation about each electrical component used and the electronic circuit, explaining how it works and why certain components were used. You will also learn about torque, ratios, gears and forces.

Great for children over 10 years old with adult supervision.

No soldering is required but a selection of small hand tools is required for assembly .

# Height: Approx.97mm
# Length: Approx.157mm
# Width: Approx.143mm
# 48 page manual

Console cable for cisco switch or router

Console cable connect via RJ45 port to switch or router (Cisco), the other side to pc interfave connect via serial port, usually db9 port. This cable ussualy use for admin the cisco hardware, configuring, setting up and so monitoring.

db9 serial null modem cable, suitable for mikrotik console

The main purpose of a null-modem cable is to permit two RS-232 "DTE" devices to communicate with each other without modems or other communication devices (i.e., "DCE"s) between them.

To achieve this, the most obvious connection is that the TD signal of one device must be connected to the RD input of the other device (and vice versa).

Mikrotik console cable use this serial null modem cable

db60 crossover cable

This cable is a 3ft V.35 DTE/DCE DB60-DB60 Crossover Back-to-Back Cable used to connect Cisco 1600/1700/2500/2600/3600 (WIC-1T, NM-4A/S, NM-8A/S on the 2600 and 3600) Series routers via their serial ports to simulate Frame-Relay and other WAN topologies.

Smart Serial crossover cable

Smart serial crossover cable ,Primarly Used for CISCO Routers, 3 Feet Long.

  • 3ft Back-to-Back Serial CrossOver Cable for Cisco 1700 (WIC-2T), 2600 (WIC-2T), 3600 (WIC-2T)
  • Use To Connet Two Cisco Routers with Smart serial Ports
  • Professional Grade Cable at a Discount Price.

Wednesday, March 03, 2010

used PWR-1700-WW1- Cisco 1700 series power supply

PWR-1700-WW1= - Cisco 1700 series power supply

* Manufacturer: Cisco
* Part Code: PWR-1700-WW1
* Device Type: Power supply
* Product Description: Cisco power supply
* Input Voltage: AC 110/220 V

used Cisco1721 modular router

The Cisco 1721 is a modular router optimized for data-access applications, providing businesses with the most complete functionality and flexibility to deliver secure Internet and Intranet access. The router offers a wide array of WAN access options, high-performance routing, Quality of Service, inter-virtual LAN routing, and VPN access with firewall options. Powered by Cisco IOS, the Cisco 1721 offers high reliability and flexibility of interchangeable WAN interface cards, comprehensive security that includes hardware-assisted VPN encryption and a stateful inspection firewall, and business-class DSL with enhanced quality of service to ensure high-performance levels are guaranteed.

Key Benefits:

* Cost-effective modular device optimized for data-access applications
* Offers a wide array of WAN access options, high-performance routing, VLAN routing, and VPN access with firewall options
* Offers business-class DSL through ADSL and G.SHDSL technologies with enhanced QoS

used WIC-4ESW, 4-Port Fast Ethernet Switch, for Cisco 1700 Series Modular Routers

The Cisco 4-port 10/100BASE-T Fast Ethernet Switch WAN Interface Card (WIC-4ESW) for Cisco 1700 Series modular access routers is an intelligent managed switch, offering small businesses and enterprise small branch office customers the option to integrate LAN switching and routing into one platform. The advanced capabilities of theWAN interface card (WIC), including VLAN support, Spanning Tree Protocol, and traffic prioritization, provide the flexibility for customers to deploy different network configurations.

used WIC-1B S/T, 1-port ISDN BRI S/T WAN Interface Card

Offering a single ISDN BRI S/T interface, this WIC may require an external Network Termination 1 (NT1), depending on the region of the world. The WIC inserts into a mixed-media network module or directly into the WIC slot on the Cisco 1600, 1700, 1800, 1900, 2600, 2800, 2900, 3600, 3700, 3800, and 3900 Series Integrated Services Routers. The ability to add BRI connectivity through a WIC enables administrators to maximize valuable slot space while providing additional connectivity options, such as Ethernet, on the same module.

• One ISDN BRI port (S/T interface, requires external NT1)
• Utilizes an RJ-45 connector
• Supported Onboard, NM-1FE2W-V2, NM-1FE1R2W, NM-2FE2W-V2 and NM-2W

used WIC-1T , 1 port WAN interface Card

The WIC-1T features the Cisco 5-in-1 connector which supports several serial protocols (V.35, X.21, RS-232, RS-449, RS-530) when used with the appropriate transition cable. This facilitates easy configuration and re-configuration as network requirements change without the need to purchase a different serial interface card.

Note: When used in Cisco 1720 and 1600 Series Routers, the WIC-1T may also be operated in asynchronous mode. The WIC-1T is not supported in asynchronous mode when used in Cisco 2600 and 3600 Series Routers.

Tuesday, March 02, 2010

Stepper Motor Driver by Smart Peripheral Controller

Stepper Motor driver release by Smart Peripheral Controller (SPC) can drive and controlled up to 8 stepper motor in one system. Built in compatibility with any minimum system that work at 5 VDC and equipped with ready for use routines.

Technical Specifications:
  • base on SPC
  • have I2C interface and 5 paralel port
  • Wide develop up to 8 modules in 1 system
  • unipolar and or unipolar stepper motor compatible
  • half or full running mode stepper motor compatible