Electronic Robot Kits
 

Price: $12.20

RUNNING MICROBUG-MK127

Attractive bright colored bug-shaped miniature robot. The microbug is always hungry for light, it drives towards it !

Features

  • two open chassis sub-miniature motors
  • adjustable light-sensitivity suits almost any light condition and allows to control it's 'bug-like' behavior
  • LED 'eyes' indicate driving direction
  • stops in total darkness

Specifications

  • power supply: 2 1.5V AAA batteries (not incl.)
  • dimensions: 4.0" x 2.4"

 

Home Applications


Price: $31.90

K2 Kit 2 LCD Temperature Meter

Introduces 3 1/2 digit LCD and the very popular 7106 IC. This IC has been used in low-cost multimeters for over 13 years. We use it to measure temperature using a ordinary signal transistor as the sensor. Data sheets are provided as is a breadboard area so you can extend the circuit to build your own voltmeter, ammeter, resistance meter or extended-range temperature meter. Takes away the mystery of how multimeters work. Box provided. 9V battery operation.

LCD data sheet. VI302-DP-RC pdf file for Kits 2 and 34.





$27.98

K21 Kit 21 Two Station Intercom

Simple two wire intercom. Each unit with its own speaker, microphone and amplifier (LM386.) Can be modified to a hard wired 'bug'. With 4 strand ribbon cable the power can be sent to the remote 'bug' unit from the receiving unit.

Scan of PCB

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DUAL ELECTRONIC DICE-K3400

Two fully independent dice. At your choice you can play with one or two dice. Displays are switched off automatically after 30 seconds to save battery power.

Specifications

  • power supply: 8 to 12V DC or 6V AC / 60mA

  • PCB dimensions: 3.0" x 2.8"

Price:$23.60

MULTITONE CHIME- K6600

The number of tones may be selected up to a maximum of three, each of which is output one after the other. This can be used to help locate the place being called. Volume and tone can also be set. The existing bell transformer can be used as a power supply.

Specifications

  • adjustable tone and volume control

  • 1, 2 or 3 tones selectable

  • loudspeaker output: 0.3W / 8ohm

  • power supply: 6 to 9V AC / 0.2A or 4.5V battery (3 x 1.5V AA batteries (not incl.)

  • idle current: less than 10µA

  • dimensions: 2.1" x 2.3"

Price:$29.80

Alarms and Automotive Applications

ELECTRONIC TRANSISTOR IGNITION FOR CARS-K2543

Gives your car the feel of an expensive luxury car. Better starting and smoother running, particularly at very high and very low RPM. Lower fuel consumption, less pollution, lower servicing costs. Drive economically, drive electronically. Only for petrol/gasoline engines. Only for cars with negative ground.

Specifications

  • max. current: 4A

  • connection speed: up to 500kHz

  • PCB dimensions: 2.8" x 1.4"

Price: $26.40

WINDSHIELD WIPER ROBOT OR INTERVAL TIMER-K2599

 

Up to 3 different time intervals (2 - 10 - 15 seconds) can be selected for the windshield wipers of your car. It can also be used for automatic slide projection.

Specifications

  • relays on PCB: 2 inverters

  • power supply: 12 - 15V DC

  • PCB dimensions: 3.2" x 2.2"

Price: $25.40

DIGITAL TACHOMETER-K2625

For cars or motorcycles with a petrol engine. May be used as a general purpose revolution counter.

Specifications

  • range: 100 - 9900 revolutions/minute

  • 2 digit display

  • easy calibration

  • power supply: 10 - 15V DC / 200mA

  • PCB dimensions: 3.2" x 1.8" + 3.2" x 2.4"

  • front panel dimensions: 2.8" x 3.5"

Price: $33.00

FROST INDICATOR-K2644

 

Drive more safely in freezing weather. This kit uses a flashing LED to indicate a road temperature close to freezing point ; below that point the LED is on continuously. A reliable temperature sensor with mounting stud is included.

Specifications

  • power supply: 10 - 15V DC / 25mA

  • PCB dimensions: 2.2" x 1.7"

Price: $18.40

CODE LOCK-K6400

This code lock may be used to switch an alarm (e.g. car alarm K3504) on and off, or to open a door lock. An LED on the operating panel indicates the position of the 'lock'. The code is easy to define. Because the operation panel is completely enclosed, it may be used inside and outside the house.

Specifications

  • more than 3000 codes (4 digits)

  • relay output: 5A / 110V

  • time limit for code entry: ± 5 seconds

  • power supply: 9 - 15V DC or 8 - 12V AC

  • power consumption:

    • output on: 40mA

    • output off: 0.3µA

  • dimensions: front panel : 3.2" x 3.2", depth : 1.6"

Price: $35.80


Price: $12.00

 CAR ALARM SIMULATOR-MK126

LED with 'realistic-appearing' flash sequence simulates active car alarm system.

Features

  • activates automatically when the engine is turned off
  • easy to install, just two wires to connect
  • adjustable sensitivity

Specifications

  • low current consumption: 12mA max. (12V only)
  • comes complete with pre-wired LED-holder and two warning labels
  • dimensions: 2.3" x 1.8"

 
FM Transmitter




$13.89

K7 Kit 7 3V FM Transmitter

The most powerful 'bug' available for its size, 3V supply and number of components. Guaranteed to transmit over 100 meters within buildings and to 500 meters in the open. Easily tunable in the FM band. Greater range at higher voltage and better aerial.

For an excellent introduction to the theory of 'simple' 2 stage transmitters download FM Transmitter Theory 1.2MB



$10.89

K16 Kit 16 FM Telephone Transmitter

Miniature transmitter which attaches in series with one of the two lines to your telephone. Transmits over 200 meters to an ordinary FM receiver. Transmits further if the FM receiver is near the phone line. Tune with ceramic trim cap. Uses the phone line as an aerial and power source.



$13.89

K18 Kit 18 9V FM Transmitter

More powerful FM transmitter 'bug' than Kit 7. Tank oscillator coil built into the circuit board. Can be tuned anywhere in FM band. 9V battery operation. Over 400m range in the open depending on aerial used.

For an excellent introduction to the theory of 'simple' 2 stage transmitters download FM Transmitter Theory 1.2MB

K18 PCB now has 5 pairs of SM pads for SM resistors to be supplied later.



$13.75

K28 Kit 28 Voice Activated FM Transmitter

A sound activated switch and an FM transmitter joined together to make a voice activated FM transmitter. Set the level of sound that it will respond to. Two stage transmitter needs tuning to get best results. Tuning Kit and instructions enclosed. Transmits up to 1 km in the open depending on the aerial used.





$13.89

K32 Kit 32 Three Stage FM Transmitter

Our most powerful FM 'bug' to date. A two stage FM transmitter with an RF transistor (ZTX320) in the output stage. 9V operation. On/off switch mounted on the PCB.

See Kit 32 Report for independent test results on this Kit by Web-surf. For an excellent introduction to the theory of 'simple' 2 and 3 stage transmitters download FM Transmitter Theory 1.2MB





$10.89

K51 Kit 51 Small 2.5cm x 1.5cm 9V Bug

No description.

Remote Control Units

 $49.20

 

Kit 157 Rolling Code 2-Channel UHF Remote Control
This is state of the art. Up to 15 Tx units can be learnt by one Rx unit.

 

 



$55.80

 

Extra Remote
 

$16.00

K180 Kit 180 Rolling Code 4-Channel UHF Remote Control

This is state of the art. Up to 15 Tx units can be learnt by one Rx unit. There is a complete description of what rolling code is in the article. For more on using KEELOQ to generate hopping passwords see AN662 and AN665 by Microchip. Do a google.com search on '433.9mhz', 'lipo' for more information about the transmitting band.

$62.40

K181 Kit 181 Rolling Code 10-Channel UHF Remote Control

Kit 181 uses the same Tx/RX pair as Kit 180 but it uses all 10 defined keypress combinations out of the 4 buttons to activate relays. The following keypress combinations give readable outputs: pins 1, 2, 3, and 4 (of course) and the pins 1&2, 1&3, 1&4, 2&3, 2&4, and 3&4 pressed together. A PIC16F628 does ALL the work. It is a perfect demonstartion of how micro-controllers have taken over from cmos logic etc.

Toggle or momentary mode will be determined by keeping the 1 or two buttons depressed for more than 2 seconds and then that relay will stay in that mode until another >2 sec keypress. Small relays are used to save weight and board area.

REMOTE CONTROL BY TELEPHONE-K6501

This kit makes it possible to turn up to three devices on or off over the telephone. It is also possible to check the condition of a switch (open or closed). Example : when you are away on holiday, you may switch the lights on and off from time to time, check the alarm or turn on the heating before returning home. A major advantage of this circuit lies in the fact that audio signals are used to tell whether a specific output has been turned on or off. Operation is protected by a user defined code, which is simply keyed in from the telephone keypad.

Specifications

  • a relay is included for one output: 10A / 250V AC

  • automatic pick-up can be selected for ± 8 or ± 3 rings

  • automatic hang-up if no code is entered within 20 seconds

  • supply voltage: 12V AC / 300mA

  • dimensions: 4.1" x 5.1"

Price: $59.55

THERMOSTAT WITH REMOTE CONTROL VIA THE TELEPHONE-K6502

The thermostat is used as any other one, but with the added facility of choosing the day or night temperature setting by means of a telephone. The remote control facility is operated via the telephone keypad, thus a DTMF type phone is required. From audio signals sent down the line, the user receives a report back on how the thermostat is set. Switching is protected by a security code, set by the user, which is keyed into the telephone in a simple manner.

Specifications

  • separate settings for day and night temperature with LED indication

  • relay output with LED indication: 5A / 240V AC (1200W)

  • telephone pick-up after ± 3 or 8 rings

  • report when the temperature has fallen below 37.4°F

  • automatic hang-up if no code is received within 40 seconds

  • possible security codes: from 000 to 999

  • day temperature: from 57°F to 79°F

  • night temperature setting: from 43°F to 64°F

  • hysteresis (allowed temperature swing): 0.1°F

  • local manual control

  • supply voltage: 110V AC

Price: $129.00

10-CHANNEL, 2-WIRE REMOTE CONTROL- K8023

This kit allows you to control up to 10 devices using only 2 wires at a long distance. Microprocessor controlled. Inputs can be push-buttons, switches or open collector outputs from another device. The receiver section provides 10 open collector outputs that allow you to control relays directly. Terminal block connectors for all input and output connections are included. All outputs are provided with LED indication.

Specifications

  • 10 open collector outputs: 50V / 100mA

  • tested to a distance of up to 50m (55 yards) between control- and receiver section

  • operating voltage: single 12-15V AC or DC, 300mA

  • dimensions:

    • control pcb: 2.7" x 2.0" x 0.6"

    • receiver pcb: 4.0" x 2.0" x 1.0"

Price: $34.65

Price: $16.60

 REMOTE CONTROL VIA GSM MOBILE PHONE-MK160

Features

  • turn equipment on and off at any location via GSM mobile phone
  • applications: turn on lighting, heating, open your gate, simulate presence, control animal feeders, activate car alarm, etc...
  • ring detection circuit avoids phone charges
  • no need to open or modify phone, no physical connection to mobile phone
  • works with most GSM mobile phones

Specifications

  • dual operation mode: on/off toggle or on with auto turn-off timer
  • timer settings: 0.5s, 2s, 30s, 1 min, 5 min, 15 min, 30min and 1 hour
  • NO/NC 3A relay output
  • power supply: 12Vdc / 100mA
  • dimensions: 4.0" x 1.7" x 0.9"

Interface Systems and Programmers



$42.90

K59 Kit 59. 68HC705P9 Programmer

We developed a programmer for the P9 micro-controller used in our Codepad, Kit 53. We thought there was enough general interest to issue this programmer as a Kit. Top quality components are supplied. Space for 2 ZIF sockets. Double-sided PTH PCB.

Scan of PCB

 



$41.80

K99 Kit 99 Motorola 68HC705K1 Programmer/Simulator

For 386 & 486 machines only.

 



$89.60

DIY KIT 117 PICALL Microcontroller PIC Programmer

A continuity tester is one of the most useful pieces of test equipment to have. It is used for testing the electrical continuity between two points. Our tester will "buzz" up to a specified resistance or less. Two on-board resistance ranges available. Full theory of operation given. The user may adjust the resistance ranges to suit his own requirements.

The kit is driven from the Parallel Printer port of a PC using a straight thru M/F 25 pin cable. These are readily available.

There is no software Registration, as a programmed chip is supplied in the kit, and the PC driver software is free.

For volume programming and maximum flexibility the kit requires one on-board wide-slot 40-pin ZIF socket. The software tells you where to place the PIC you are programming. (Note some older designed PIC programmers available like the Warp-13 have 2 or even 3 (!) ZIF sockets on-board. Only one wide-slot 40 pin ZIF socket is necessary with PICALL.) The reason the 40 pin ZIF socket is not included is because these are manufactured in north America while the kit is packed in Hong Kong. Since most kits are sold in Europe & north America it is cheaper if you buy the socket locally.

All software and other documentation is available from Bojan Dobaj's Home Page at picallw.com

For a full list of the devices programmed by Kit 117 visit picallw.com

K117. PICALL for Windows software. V0.10c. november, 2001. 750K. Latest. All the Error Messages are now in Help of the Hardware Settings and Testing.

 





$58.00

K122 Kit 122 Atmel AVR programmer

To program 20-pin DIP - 90S1200, 90S2313, and 40-pin DIP - 90S4414, 90S8515. Programs at 9600 baud. Parallel mode. With the optional adaptor board you can now program AT90S4434 and AT90S8535. It will not program the 8-pin AVR devices (90S2323, 90S2343).

Scan of PCB

Adaptor board for K122 to program 90S4434/8535.

Underside view of adaptor board

Top view of adaptor board

 





 $89.00

K144 Kit 144 Enhanced PICALL Microcontroller PIC programmer

This is an enhanced K117. It will program some Scenix uC's, Atmel AVR's and EEPROMS. See picallw.com for lists of the uC's it will program.

In addition it has an header for USP programming of PICs and Atmels. A 6-pin header and harness come with the kit.

June, 2002. K144 now supports PIC18Xxxx chips. Get the latest software for PICALL for Windows software. V0.13c. october, 2002.

July 4, 2002. K144 now support programming PIC18Fxxx chips. You must use the latest software for PICALL for Windows software. V0.12c. May, 2002. A small hardware addition is needed for K144. No hardware change is needed for K96.

 

 





 $46.80

K149 Kit 149 USB/Serial PIC programmer

*THE KIT DOES NOT INCLUDE ZIF SOCKET

Released 12/2002. A DPST switch switches between USB and serial modes. The kit uses a modern, surface-mount FT232BM presoldered on the solder side of the board..

New chipinfo.dat file with data for 18F452 and 18F252.

 

 $59.70

K150 USB PIC Programmer WITH ZIF SOCKET

It has a B USB connector put on it as well as a 6 pin ICSP connector.

This Kit is fully assembled

 





 $13.50

K151 Kit 151 EEPROM Programmer

PC Parallel port programmer for the 24xxx, I2C bus and 93xxx EEPROMS. 8 bit programming mode only. We use a 24C16 Software in the Christmas Tree Kit 103 so that was the main reason we did the kit. A 16 pin ZIF socket is used on-board. The top 8 pins are for the 24xxx; the bottom 8 are for the 93xxx SPI EEPROM's.

Kit 151. eeprog.exe software

 

 $39.00

Kit 182 USB Flash PIC programmer no ZIF socket

Kit 182 is Kit 128 without the ZIF socket. It is thus a Flash ICSP Programmer operating from the USB port. It will be sold fully assembled as most of the components are surface mount. The board is only 48 x 30mm. There are 4 nylon 10mm standoffs to protect the underside. USB 'B' female connector.

Click on the picture below for more information.

 

PIC PROGRAMMER BOARD-K8076

This board can program a wide range of Microchip® PIC™ microcontrollers

Features

  • onboard configurable 40 pin. ZIF socket

  • Microcontroller selection using patch jumper

  • easy to use programming PICprog2006™ software included

  • SUBD connector set included

  • minimum system requirements:

    • IBM Compatible PC, Pentium or better

    • Windows™ NT/2000/XP

    • CDROM drive

    • free serial RS232 port required

Specifications

  • power supply: 15V DC, min. 300mA adapter (Ex. PS1508)

  • serial port connector: 9 p. SUBD

  • dimensions: 132x65x20mm / 5,23 x 2,57 x 0,79"

Price: $48.30

Light Application


$13.50

K8 Kit 8 Light Alarm

Detects very small amounts of light and sounds the piezo alarm. Put it in your cash box or cupboard. Uses Darlington photo transistor MAL12 (replaced the MEL12 in mid-1998) and 14011 IC. Educational kit.

POWER DIMMER, PUSH-BUTTON CONTROLLED (1KW@230V)-K8038

Price: $34.65

Features

  • powerful high-quality dimmer, suitable for incandescent lamps, mains voltage halogen lighting and low voltage halogen lighting in combination with a conventional (wire wound) transformer

  • easy push-button operation for dimming of light sources.

  • phase control can be disabled

  • non-volatile memory for last set light intensity

  • lots of safety features to make lamps last as long as possible, such as "oftstart" and automatic turn-off after 12h or after 20min at too low intensity

  • transformer protection in case of defective light sources

  • LED status indication

Specifications

  • suppression of radio & TV interference according to EN55015

  • operating voltages: 110-125V or 220-240V AC (50/60Hz)

  • max. load: 1000W/230V or 500W/115V (5A)

  • max. phase shift with inductive load: 30°

  • dimming speed: ± 5 sec.

  • PCB dimensions: 3.5" x 2.9" x 1.6"

  • ambient temperature: 10°C to 40°C

MULTIFUNCTIONAL DIMMER-K8028

Price: $34.65

Features

  • microcontroller technology

  • 13 different functions: impulse switch, staircase light control, slow ON/OFF dimmer, interval timer, speed adjustment for fans, etc…

  • suitable for both resistive and inductive loads (light bulbs, high-voltage halogen lighting and low-voltage halogen lighting with ferromagnetic transformer)

  • "Soft Start" prolongs the life of the bulbs

  • an advanced security system with fault indication automatically deactivates the module if the load or no-load behaves too inductively

  • can be operated from several locations, simply by the parallel connection of push buttons

  • 2 delay times (anywhere between 5 sec. to 2 hours each) can be programmed through the learning mode

  • memory is protected against power failures

  • equipped with fuse and key for function selection

  • equipped with a mains suppressor according to EN55015 norms

Specifications

  • supply voltage: 110-125V or 220-240V AC, 50 or 60Hz

  • automatic detection of mains frequency: 50 or 60Hz

  • max. load: 2.5A (300W / 120V ; 600W / 230V)

  • dimensions: 3.9" x 3.2" x 1.4"

LIGHT COMPUTER-K5201

Sixteen different programs and seven outputs make this light computer a unique showpiece. This kit can find applications in party lighting, discotheques, advertisement lighting, signaling, etc. To be able to view the programs directly, each output is provided with a LED. The complete circuit can be installed so that all operations and LEDs are available from the front panel. To enhance the spectacle further, an unlimited number of circuits can be connected together to work synchronously. Moreover, two programs are provided which are specially adapted to operate two light computers in cascade.

Specifications

  • 7 triac outputs: 1.5A max.

  • supply voltage for the lights: 24VAC to 240VAC

  • supply voltage of the circuit: 7.5 - 9VAC / 250mA

  • 16 programs

  • speed controllable

  • input for external clock

  • PCB dimensions: 5.3" x 3.1"

Price: $59.55
Motor Speed Controllers





 

$26.00

K67 Kit 67 DC Motor Speed Controller

Control the speed of any common DC motor rated up to 100V (5A). Operates on 5V to 15V. Uses NE556 to pulse-width modulate a high current switching power transistor, TIP122. In this way motor torque is maintained. Adjustable speed control. Box mounted.

 

 $32.50

Kit 166 Bidirectional DC Motor Speed Controller

This kit allows controlling the speed of a DC motor in both the forward and reverse direction. The range of control is from fully OFF to fully ON in both directions. Normally, switches are used to change the direction of rotation of a DC motor. Change the polarity of the applied voltage and the motor spins the other way! However this has the disadvantage that a DPDT switch has to be added to change the polarity of the applied voltage. Now you have two things to control the motor – a direction switch as well as the speed control.

Also, it is not a good idea to suddenly reverse the voltage on a DC motor while it is spinning. It can cause a current surge that can burn out the speed controller. Not to mention any mechanical stress it can cause as well. This kit overcomes both these problems.

For more information click on the picture.   

Power Supplies and Chargers


Price: $21.41

K4 Kit 4 Basic Power Supply Module

Batteries soon become an expensive way to power your electronic kit and electronic games. This is a basic power supply in a box using two 7805 regulators. Input up to 20V AC from a transformer or power pack. Two regulated outputs are available - one fixed at 5V, the other variable. Good introduction to three terminal regulators.

 



$13.19

K60 Kit 60 Regulated Power Supply

Kit accepts an unregulated AC or DC input. The user supplies a standard 3 pin voltage regulator from 5 volts (using a 7805) to 24 volts (7824). The full range of possible regulators is: 7805, 7806, 7808, 1810, 7812, 7815, 7818 & 7824. Large heat-sink provided. PCB = 64mm x 40mm (2 1/2" x 1 1/2")

 



$18.97

K83 Kit 83 Kit 83 Universal Power Supply

Put in your own 78xx and 79xx 3-pin regulators (TO-220 type) to give fixed positive and negative voltage outputs which you want for your project. Supplied with 2 small heatsinks. Requires centre-tapped AC voltage source.

Dimensions = 78mm x 43mm

 





$15.40

K68 Kit 68 Power Supply Module using LM317T

This is a basic adjustable voltage power supply using the popular three pin regulator, LM317T. You can select any voltage between 1.5V and 30V using a potentiometer. The LM317T is rated at 1.5A so you must use a larger heat sink when drawing high currents.

 





$20.90

K114 Kit 114 Dual Unregulated Power Supply

Four on-board 100V, 3A diodes plus 2200uF/50V electrolytics to provide an unregulated power supply from a center-tapped transformer.



Kit 124 documentation

Kit 125 documentation

K124

$21.45 （sold out)
 

K125

$21.45

Kit 124 & Kit 125. Compact positive (K124) and negative (K125) adjustable power supply

+/- 1.5V to 35V depending on input power source. On-board heatsink.





 $13.50

K135 Kit 135 Step-Up DC to DC Converter

Designed for countries (like most of Europe) which only have power supplies to 12VDC. This Kit increases the voltage to 16.5VDC which is needed for out PIC programmers - Kits 81 96 117 and 119.

 $16.68

 

 

K186 Kit 186 Power Amplifier D.C. Supply

This is a DC power supply board designed for our Kit 106 audio power amplifier. It is also suitable for any power amplifier module or circuit requiring a positive and negative rail voltage of up to 45 Volts per side. The output voltage and current will depend on the transformer chosen, and this is not supplied with the kit. Never use a transformer larger than 35V-0-35V, as the capacitors voltage rating will be exceeded.

 

 
LOW COST BATTERY CHARGER-K7302

Price:$ 13.80

 Charges NiCd or NiMH batteries. Ideal for car use. Transforms a mains adapter in to a charger (adapter socket included). Charge cellular phone, toys, portables, video batteries, ... Selectable charge current. LED charge indication.

Specifications

  • charge current: 50mA, 100mA, 200mA, 300mA, 400mA (selectable)
  • supply voltage: from 6.5V to 21V (depending on used battery)
  • supply current: same as charge current
  • power supply polarity protected
  • LED function indication
  • dimensions: 1.6 x 2.4"

Stepper Motors Controllers



$39.90

K94 Kit 94 Digital Rotary Control of a Unipolar Stepper Motor

This kit uses a Grey switch aka bit switch, to single step a unipolar tepper motor in either direction. Uses a PIC 16C54 plus UCN5804 stepper driver IC. PCB is 4 in square, single sided.





$28.00

K102 Kit 102 Four servo Motor driver

Using a PIC 16C71, a crystal, 8 resistors & 4 capacitors this kit will independently control up to 4 servo motors. We do not supply the potentiometers or servo motors. (We used a Futaba FP-S148 for out tests.) 5V DC power supply required. Full instructions provided.





$43.90

K109 Unipolar Stepper Motor Driver Kit

Drives any 5, 6 or 8 lead unipolar stepper motor. Based on the UCN5804 IC. All features of this IC (direction, on/off, pins 9 & 10) are brought out to SPDT PCB-mounted switches. Pulses from a 555 setup as an astable oscillator are used to rough position the motor. Switch to manual single-step mode for final positioning using a tact switch. 4 LED's give visual indication that step has been made. Three run modes supported. Full explanation.





$32.45

K113 Kit 113 Two Stepper Motors Driven from a PC

Connects to the PC parallel port & will drive two stepper motors up to max. 3A each. All contained in an RS232, extended D-shell case. Software will accept 4 inputs from external switches. Software will also single step motors. Three run modes supported. All components supplied except the stepper motors.

 $27.50

 

Kit 158, Bi-polar Stepper Motor Driver kit

This kit will drive a bi-polar stepper motor driver using
externally supplied 5V levels for steping and direction.
These usually come from software running in a computer.

Click on the picture below for more information.

$28.00

K179 Kit 179 Unipolar Stepper Motor Driver


$39.00
 

Kit 187 Stepper Motor Drive

The Stepper Motor Chopper Driver is a Bipolar Stepper Motor Drive with easily adjustable current control up to 2A, based on the SGS-Thompson L297 and L298 stepper motor controller and driver IC’s. 

Stepper motors are rated by current and and not by voltage.  A chopper driver because it is  switching on and off current allows a set current to be fed to the coils and not be dependent on the voltage of the power supply.  The Chopper Driver also allows for the use of higher voltage power supplies (up to 36V) to overcome the effects of the inductance of the coils giving better performance and a higher top speed.
Logic Probe Kits



$17.05

K24 Kit 24 Logic Probe

This is the most important piece of equipment for testing and measuring digital equipment. It is usually used in fault finding and testing but can also assist in design work and to find out how digital equipment works. Switch for either TTL or CMOS. Our own modern design using a PUT. Includes detection circuit for very fast pulses. Gives visual (3 LEDs) and audio (piezo buzzer) response.

Panel Meter Kits



$32.89

K34 Kit 34 3 1/2 Digit LCD Panel Meter (using 7106)

Make this general purpose 3 1/2 digit LCD panel meter into your own voltage or current meter or custom-make it to measure voltage input from a transducer. Full details are given in the documentation. Uses the very popular 7106 IC. The LCD section of the PCB may be cut off and mounted separately.





 $26.40

K127 Kit 127 3 1/2 Digit Panel Meter

A double-sided board designed to eventually replace Kits 2 and 34.

Function Generator & Oscillator



$14.89

K23 Kit 23 Op amp Function Generator

Good value-for money & simple circuit to generate square, (pseudo) sine and triangle waveforms in the audio range. Uses quad opamp LM348.





$18.21

K111 Kit 111 Square Wave Oscillator

Simple circuit to generate square waves of approximately 1Hz 10Hz 100Hz 1KHz 10KHz & 100KHz.

Strobe Light Kits



$26.03

K22 Kit 22 9V Xenon Tube Flasher

9V battery powered xenon tube flasher. Transformer supplied. Wire is pre-wound on the bobbin but you must do the final winding of two outer coils. Full instructions provided. Trimpot to vary flash rate. Useful and educational.





 $24.10

K162 Kit 162 6V DC Xenon Flasher

6V DC Xenon Flasher. Uses on-board EE16 transformer. Uses a neon to trigger the Xenon tube flash.





 $24.10

K163 Kit 163 12V DC Xenon Flasher

Uses a sidac instead of a neon tube to trigger the flash. Sidacs represent a unique set of thyristor qualities. The sidac is a bi-directional voltage triggered switch. Some characteristics of this device include a normal 95 to 330 volt switching point, negative resistance range, latching characteristics at turn-on and a low on-state voltage drop. One cycle surge current capability up to 20 amps makes the sidac an ideal product for dumping charged capacitors through an inductor in order to generate high-voltage pulses. Applications include light controls, high-pressure sodium lamp starters, power oscillators and high-voltage power supplies

Voice Recorder Kits





$42.90

K64 Kit 64 120 Second Message Recorder

Record as many messages as you can in this modern, non- volatile, combined audio processing & memory chip from Information Storage Devices (ISD25120). One button to START/PAUSE & a second button to RESET.





 $36.50

K146 Kit 146 40 second message recorder with looping option

40 second message recorder with looping option. This kit will take any ISD DIP chip from ISD2540 to ISD25120. A switch will loop the first message continuously.