4 CHANNEL INFRARED REMOTE MODULE

SPECIFICATIONS

  • Supply – Transmitter: 2.4 ~ 5 VDC, 5 V @ 20 mA & Receiver: 5 ~ 6 VDC, 5 V @ 50 mA
  •  Output – 4 Latched/Momentary TTL compatible outputs
  •  Crystal based oscillator for reliability of operation
  •  DIP switch selectable 8 bit address code
  •  LED output to indicate reception
  •  ON/OFF slide switch in the transmitter
  •  Power-On LED indicator in the Receiver / Transmitter
  •  High noise immunity
  •  Berg connector for interfacing of the board
  •  Four mounting holes of 3.2 mm each
  •  PCB dimensions – Transmitter: 61 mm x 47 mm & Receiver: 46 mm x 46 mm

SCHEMATICS

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PCB

5 AMP H-BRIDGE DC MOTOR DRIVER USING MC33886

This tiny module has been designed to be used in Robotics, Power tools, automotive applications etc. The module is based on MC33886 from NXP. The MC33886 is a monolithic power IC comprising control logic, charge pump, gate drive, and low RDS(ON)MOSFET, H-Bridge output circuitry in a small surface-mount package. MC33886 is a monolithic H-Bridge ideal for fractional horsepower DC-Motor and bi-directional thrust solenoid control. The IC incorporates internal control logic, charge pump, gate drive, and low Rds. MOSFET output circuitry. The MC33886 is able to control continuous inductive DC load currents up to 5A. Output loads can be pulse-width modulated (PWM) at frequencies up to 10 KHz. A Fault status output reports under-voltage, short-circuit, and over-temperature conditions. Two independent inputs control the two half-bridge totem-pole outputs.

FEATURES

  • Supply 5V to 28V
  • TTL/CMOS compatible Inputs
  • Continuous DC Load Current up to 5.2A min
  • Output Current Limitation at min. 5.2A with PWM Current Regulation
  • Short-Circuit Shutdown for Output Currents over 8A
  • Logic Inputs TTL/CMOS Compatible
  • Operating Frequency up to 10 kHz
  • Over temperature and Short Circuit Protections
  • Under voltage disable Function
  • Output control via two independent inputs (forward, reverse, free-wheeling low/high)
  • Two disable inputs are provided: Low =True and High =True

APPLICATIONS

  • DC Motor control in Robotics and industrial
  • DC Motor & actuator control in Recreational Vehicles
  • Appliances
  • Automotive
  • Powered Machines and Tools

SCHEMATIC

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PARTS LIST

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CONFIGURATION

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PHOTOS

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PCB

RF REMOTE DC MOTOR DIRECTION CONTROLLER

RF Based DC Motor Direction Controller project provides an easy way to control the direction of your DC Motor connected to the receiver.  This project has been design around HT12E and HT12D encoder / decoder chips from Holtek.  With jumper selectable address on the receiver and transmitter we can control multiple   motors in one area without interference with one remote.

APPLICATION

  • Remote Motorized Volume Control
  • Remote Toy or Robot Controller
  • Remote Controlled Curtains

FEATURES

  • Supply input, Transmitter : 3 ~ 5 VDC, 5 V @ 20 mA & Receiver : 5 V @ 31 mA without Motor
  • Motor current and supply: 5 ~ 6 VDC @ 500 mA
  • Range up to 30Mtrs, open area it can be more
  • Jumper connector selectable 8 bit address code
  • Valid Transmission LED
  • On Board On/OFF Slide Switch for Transmitter
  • Power-On LED indicator in the receiver/transmitter
  • High noise immunity
  • Screw terminal connector and terminal pins for easy input/output connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions, Transmitter : 60 mm x 37 mm & Receiver : 60 mm x 58 mm

SCHEMATIC

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PARTS LIST

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PCB

WARNING LED FLASH LIGHT

LED Flasher is a simple project producing a flashing effect of six LED’s.  This project can be used in all areas where you want to draw attention.  Hi-glow LED’s providing enough flashing light to attract your attention. Can be used as warning light.

SPECIFICATIONS

  • Supply input 12 V @ 35 mA (6 to 15V Dc Possible)
  • Onboard preset to adjust flash rate
  • Terminal pins for connecting supply input
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 53 mm x 35 mm
  • CN1: Supply in 12V DC (6V-15V Supply Possible)
  • PR1 : Flash Frequency Adjust

SCHEMATIC

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PARTS LIST

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VIDEO

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SOUND TO LIGHT EFFECT

Audio Dancing LED project is a fun filled project which generates a LED dancing sequence depending on the audio level it senses.  This project is based on one of the VU Meter IC LB1403 or CA1403

SPECIFICATIONS

  • Power supply input 6 to 9 VDC
  • Output 5 LED’s
  • Onboard preset to adjust audio level to the IC
  • Onboard microphone capsule with Preamp
  • Terminal pins for connecting power supply input
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 39 mm x 67 mm

SCHEMATIC

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VIDEO

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PWM HALOGEN LAMP DIMMER

High Current PWM Halogen Dimmer controller project is designed around SG3525 IC and High current MOSFET.  Project can handle lamp up to 5 Amps (10Amps Possible with big heat sink) and supply 12-24V DC .Ideal for Halogen Dichroic Lamp or Halogen Lamp.

SPECIFICATIONS

  • Supply input 15 to 24 VDC
  •  Load-Lamp 12 to 24 VDC @ 5 Amps (10amps possible with big heat sink on Mosfet)
  •  Onboard preset for frequency adjust
  •  Frequency adjustable 4 KHz to 30 KHz
  •  PWM Duty cycle 0 to 100% (+/- 5%)
  •  Potentiometer for dimming adjust
  •  Soft Start facility
  •  Clamp diode for protection
  •  Power-On LED indicator
  •  Compact design and high quality
  •  Lamp and supply connection via screw terminal connector
  •  Four mounting holes of 3.2 mm each
  •  PCB dimensions 56 mm x 42 mm

SCHEMATIC

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PARTS LIST

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PCB

DOWNLOADS

230 VAC TIMER

Classic AC 230 V Timer project can be used in all application requiring a timer of up-to 3 Minutes to operate or control any AC mains load of up-to 200 Watts.  This project is based on the Classic 555 Timer IC, triggering a TRIAC.  Input and Output is Optically Isolated.

SPECIFICATIONS

  • Supply input 12 VDC
  • Mains supply input 240 VAC or 120 VAC ( Read Note for 120V/230V AC)
  • Output: up-to 200 Watt
  • Optically isolated Input / Output
  • Onboard start and reset tactile switch
  • Timer On LED
  • Preset adjustable and jumper selectable for range
  • Power-On LED indicator
  • Screw terminal connector for easy mains supply input and load connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 46 mm x 91 mm

SCHEMATIC

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PARTS LIST

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DOWNLOADS

AC SOLID STATE RELAY

This simple circuit designed around Solid State Relay S216S02 from SHARP. The S216S02 solid State Relay (SSR) is an integration of an infrared emitting diode (IRED), a Phototraic Detector and a main output Traic. These devices are ideally suited for controlling high voltage AC loads with solid state reliability while providing 4KV isolation from input to output.

A solid-state relay (SSR) is an electronic switching device that switches on or off when a small external voltage is applied across its control terminals. SSRs consist of a opto-isolator  which responds to an appropriate input (control signal), a solid-state electronic switching device which switches power to the load circuitry, and a coupling mechanism to enable the control signal to activate this switch without mechanical parts. This relay designed to switch either AC load up-to 1KW. It serves the same function as an electromechanical relay, but has no moving parts. Solid-state relays have fast switching speeds compared with electromechanical relays, and have no physical contacts to wear out.

FEATURES

  • AC Load Upto 16Amps Peak
  • Maximum Supply input 600V AC
  • TTL Input Trigger Voltage across Anode and Cathode 3 to 6V @ 20mA
  • Input Trigger Voltage across Transistor Base 1.5V to 24V DC 5mA
  • Small PCB with on Board Snubber Circuit for inductive Load

SCHEMATIC

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PARTS LIST

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PHOTOS

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VIDEO

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AC SOLID STATE RELAY FOR INDUCTIVE LOAD

AC Solid state Relay for Inductive Load offers simple On/Off type Switch Control with TTL compatible input signal.

  • Input signal : 2 ~ 5 VDC, TTL compatible
  • Output : up to 500 W
  • Mains supply input 230 VAC or 110 VAC
  • Optically isolated Triac based design
  • Power Battery Terminal (PBT) and Terminal pins for easy input / output connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 35 mm x 72 mm

SCHEMATIC

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PARTS LIST

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PHOTO

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PCB

ISOLATED DIGITAL ON/OFF SWITCH FOR AC LOAD

ON/OFF AC load Controller project offers simple On/Off Switch Control with two tact switch.

SPECIFICATIONS

  • Input supply – 12 VDC @ 40 mA
  • Output – up to 500 W – 230 VAC
  • Onboard tactile switch for ON/OFF control
  • Opto-isolated Triac based design
  • Power-On LED indicator
  • Power Battery Terminal (PBT) and Terminal pins for easy input / output connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 44 mm x 86 mm

SCHEMATIC

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PARTS LIST

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PCB

DOWNLOADS

OVER CURRENT PROTECTION SWITCH

Current Sensing Switch is designed to operate a Relay Contact when there is a DC current through the sense resistor exceeds the set point, Set point adjustable from 1A to 3Amp using on board potentiometer.  This circuit can offer over current protection to your project.

SPECIFICATIONS

  • Input: 12 VDC
  •  Range: 1 to 3 A selectable with onboard preset
  •  Output: SPDT Relay (Normally Open & Normally Closed)
  •  Power Battery Terminal (PBT) and Terminal Pins for easy connection
  •  Four mounting holes of 3.2 mm each
  •  PCB dimensions 52 mm x 47 mm

SCHEMATIC

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PARTS LIST

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VIDEO

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DARK SENSITIVE SWITCH – LED LIGHT

Dark activated LED light is a simple project which operates a LED when the light falling on the LDR goes below a set point.  The circuit is built using LM393 comparator, LDR as light sensor, preset (potentiometer) for sensitivity adjustment, transistor to drive the LED. The project can also be considered for use in energy saving application.

FEATURES

  • Input – 12 V @ 1A
  • LED 12V 500mA Maximum (6W)
  • Onboard Preset for Level Adjust
  • Operation LED Indicator
  • On Board Power LED
  • Header Connector for Power Supply and LED
  • PCB dimensions 55.45MM X 12.70 MM

SCHEMATIC

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PARTS LIST

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CONNECTIONS

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PHOTOS

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VIDEOS

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4 CHANNEL RELAY BOARD

Quad Channel Relay Board is a simple and convenient way to interface 4 relays for switching application in your project.

FEATURES

  • Input supply 12 VDC @ 170 mA
  • Output four SPDT relay
  • Relay specification 5 A @ 230 VAC
  • Trigger level 2 ~ 5 VDC
  • Berg pins for connecting power and trigger voltage
  • LED on each channel indicates relay status
  • Power Battery Terminal (PBT) for easy relay output and aux power connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 88 mm x 68 mm

Applications: Robotics, Electronics projects, Industrial controls, Microwaves Oven, Fans, DC Motor, AC Lamp, Solenoids Remote Controls etc.

RELAY LOAD (CONTACT CAPACITY OF RELAY)

  • 7 A @ 230-250 VAC
  • 10 A @ 120 VAC
  • 10 A @ 24 VDC
  • CN1 – CN4 Connector : Relay 1 to 4 (S1 to S4) Output (Normally Open/Normally Close)
  • CN5 Connector : Control Signal Input, Trigger 2 to 5 VDC and Supply Input 12 VDC
  • D2,D4,D6,D8 : Relay On/Off LED Indication
  • CN6 Connector : Axillary Supply 12 VDC

SCHEMATIC

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PARTS LIST

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CONNECTION

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PCB

ONE CHANNEL INFRARED REMOTE CONTROLLER

One Channel Infra-Red Remote and receiver with onboard Relay provides normally open and normally closed output. The project based on PIC12F683 Microcontroller from Microchip , TSOP1738 used as Infra-Red receiver. Micro-controller decodes the RC5 serial data coming from TSOP1738 and provides high output if the data is valid. The output can be set Momentary or Latch using on board Jumper (J1) and closure. The board provided with 3 LEDs, Power LED, Valid Transmission LED and Output LED. This Remote works with switch No1 of RC5 Remote.

FEATURES

  • Power Supply Remote  2X AA Batteries
  • Power Supply Receiver  7-12V DC
  • Current Consumption Receiver 30mA
  • Onboard jumper for momentary and latch operation selection
  • Transmitter range 10-15 feet
  • RC5 (Philips) Remote
  • Onboard power LED
  • Onboard output ON/OFF  LED
  • Onboard Valid Transmission LED
  • Onboard 5V regulator
  • PCB Dimensions 59.06 MM X 29.53 MM

SCHEMATIC

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PARTS LIST

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PCB

HEAT ACTIVATED COOLING FAN CONTROLLER

Heat-activated cooling fan controller is a simple project which operates a brushless fan when the temperature in a particular area goes above a set point, when temperature return normal, fan automatically turns off. The project is built using LM358 Op-amp and LM35 temperature Sensor. Project requires 12V DC supply and can drive 12V Fan. This project is useful in application like Heat sink temperature controller, PC, heat sensitive equipment, Power supply, Audio Amplifiers, Battery chargers, Oven etc

The SMD SO8 LM35 used as temperature sensor, LM358 act as comparator and provides high output when temperature rise above set point, high output drive the Fan through driver transistor. The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly-proportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 device does not require any external calibration or trimming to provide typical accuracy of ±¼°C at room temperature. Temperature sensing range 2 to 150 centigrade. LM35 provides output of 10mV/Centigrade.

FEATURES

  • Supply 12V DC 1Amps
  • Fan 12V DC , 500mA
  • Range : 2 °C to 150 °C
  • Open Collector Output
  • It can drive PC fan
  • Onboard preset to set the Fan trigger level
  • Onboard Power LED
  • Onboard Output LED
  • Output Driver Transistor
  • Header Connector for Supply and Fan
  • PCB dimensions 59.85 mm x 12.70 mm

SCHEMATIC

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PARTS LIST

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CONNECTION

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PHOTOS

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4 CHANNEL RF REMOTE CONTROLLER

4 Channel RF remote built using PT2262 and PT2272-M4 IC from Princeton technology. PT2262 used as Encoder (Transmitter) and PT2272-M4 Decoder (Receiver) ICs are heart of the project. The receiver provides 4 channel Momentary outputs. All outputs are TTL level can be interface with other circuits or relay board. Transmitter works with 5V to 12V DC. Receiver works with 5V DC.

When any of SW1-SW4 (S1-S4) tact switch is pressed the, power is applied to encoder IC and RF transmitter module, the encoder then starts scanning Jumper J1-J8 and transmitting the status of the 8 bits address and data serially. The decoder IC receives the data and compares two times with J1-J8 address jumpers and provides outputs high and also VT LED goes On, if the data is Valid and address of Transmitter and Receiver are same. It is important to have same jumper settings J1-J8 at transmitter and receiver to pair both. Multiple remote can be used to control devices at same location by changing the address codes. All address is Tri-State and offers 6561 combinations.

Encoder – Transmitter (PT2262)

PT2262 is a remote control encoder paired with PT2272 utilizing CMOS technology. Its encode data and address pins into a serial coded waveform suitable for RF modulation. Circuit uses 8 bits of tri-state address pins providing up to 6561 address codes, thereby, drastically reducing any code collision and unauthorized code scanning possibilities.

PT2262 encodes the code address and data set into special waveform and outputs it to the DOUT when TE is pulled to low. The wave is fed to RF modulator (ASK RF TX Module) for transmission. The transmitted radio frequency is received by RF demodulator (ASK RF RX Module) and reshaped to special waveform. PT2272 is then used to decode the waveform and set the corresponding output pins. Thus completing a remote control encoding and decoding function.

Decoder Receiver (PT2272-M4)

PT2272 decodes the waveform received and fed in to the DIN pin. The waveform is decoded into code word that contains the address, data and sync bits. The decoded address bits are compared with the address set at the address input pins. If both address match for 2 consecutive code words, PT2272 drives the data output pins whose corresponding data bits is the decoded to be a 1 bit, and (2) the VT output — to high state.

VT (Valid Transmission)

When PT2272 receive a transmission code word, it initially checks weather this is a valid transmission. For a transmission to be valid, (1) it must be complete code word, and (2) the address bits must match the address setting at the address pins. After two consecutive valid transmission, PT2272 (1) drives the data pins according to the data bits received, and (2) raises VT to high state.

NOTE : Jumper J1 to J8, To set High Jumper provided at Bottom layer of PCB, Jumpers and closure provide to set low, don’t use any of these for floating.

FEATURES

  • Wide Range of Operation Voltage 5V to 12V Transmitter
  • Supply 5V DC Receiver
  • On Board Data Transmission LED
  • Single Resistor Oscillator
  • 4 Momentary Outputs
  • 4 Outputs TTL Level
  • Address setting 3 states HIGH, LOW, And FLOATING)
  • Remote provides 6561 addressable combinations by setting up J1-J8 to High, Low, and Floating.
  • On Board Power and Valid Transmission LEDS Receiver
  • ASK Modulation
  • RF link work on 433.92 MHz Frequency
  • CMOS Technology
  • Low Power Consumption
  • Very High Noise Immunity
  • Up to 8 Tri-State Code Address Pins
  • PCB Dimensions Transmitter 36MM X 26.67MM
  • PCB Dimensions Receiver 45.40 MM X 26.67

APPLICATION

  • Car Security System
  • Garage Door Controller
  • Remote Control Fan
  • Home Security
  • Automation System
  • Remote Toys
  • Robots
  • Remote Control for Industrial Use

SCHEMATICS

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PARTS LIST

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4-Channel-RF-Remote-Controller-BOM-TX

WIRING DIAGRAM

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PHOTOS

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PCB

PWM SOLENOID AND VALVE DRIVER USING DRV103

This tiny module is a PWM Solenoids and Valves driver using Texas instrument’s DRV103 low-side DMOS power switch employing a pulse-width modulated (PWM) output. Its rugged design is optimized for driving electromechanical devices such as valves, solenoids, relays, actuators, motors and positioners. This board is also ideal for driving thermal devices such as heaters, coolers, lamps etc. PWM operation conserves power and reduces heat rise, resulting in higher reliability. In addition, adjustable PWM allows fine control of power delivered to the load. Output delay time and oscillator frequency are also externally adjustable.

The DRV103 can be set to provide a strong initial closure, automatically switching to a “soft” hold mode for power savings. A resistor, analog voltage, or Digital-to-Analog(D/A) converter can control the duty cycle. An output OK flag indicates when thermal shutdown or over current occurs.

Solenoid-driver-PIC

FEATURES

  • Supply 8V to 32V DC
  • Load Capacity 1.5A
  • Trigger Input Voltage 1.5V to 5V DC
  • Thermal and Current Limit Shutdown
  • On-Board Power LED

APPLICATIONS

  • Solenoids
  • Valves
  • Heaters, Coolers
  • Lamps
  • Relays
  • Power Contactor Coils
  • Hydraulics and Pneumatics Systems

Note: PWM Duty Cycle, Output Delay, Frequency Adjust

  • Oscillator Frequency range 500Hz to 100Khz, the default set to 5Khz, Frequency can be altered by changing  R4 ( Refer to Datasheet for more details)
  • Delay Output: Default delay set to approx. 100mili seconds, Delay can be adjusted by changing Capacitor C1
  • Duty Cycle is adjustable 10% to 95% , the default set to 95% can be altered by changing R3 (Refer to Datasheet for more details)

SCHEMATIC

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PARTS LIST

PHOTOS

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MEASUREMENTS

Vout on the solenoid. We see that goes ON and after some time it starts PWM production to retain the ON state but with lower dissipated power and thermal stress.

VIDEOS

PCB

4 CHANNEL LARGE CURRENT RELAY BOARD

4-Channel Relay Board is a simple and convenient way to interface 4 relays for switching application in your project. The project has large Relay which can switch current up to 20Amps.

SPECIFICATIONS

  • Input supply 12 VDC @ 360 mA
  • Output four SPDT Relay
  • Relay specification 20 A @ 230 VAC NC/30A NO
  • Trigger level 2 ~ 5 VDC
  • Box Header connector for connection of trigger signal
  • LED on each channel indicates relay status
  • Power-On LED indicator
  • Screw terminal connector for easy relay output and power in connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 65 mm x 116 mm

SCHEMATIC

4-channel-large-current-relay-board-schematic

PARTS LIST

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PHOTOS

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PCB

LARGE CURRENT RELAY WITH DUAL OUTPUT DC-DC CONVERTER FOR HOBBY CNC/ROUTER

Single Channel Large current relay board with dual DC-DC converter board is mainly designed for Hobby CNC, Routers, and Plasma cutters.

Hobby CNC controller requires multiple DC outputs to drive various things.  This board provides 5V DC and 12V DC 1Amp each. The dual supply helps driving LPT breakout board, Sensors, Limit switches and few other things that require 5V and 12V.

The Relay has large current handle capacity and can be used to drive spindles, solenoids, and other things that require switching. The relay requires TTL High signal to trigger or it has the capability to even trigger with GND signal.

FEATURES

  • Supply Input 15V to 35V DC
  • DC Outputs 5V @ 1A & 12V 1A
  • On Board LED for Relay Output
  • Relay Contact 20Amp NC and 30 Amps No 230V AC
  • Relay Trigger 5V TTL in or GND input
  • Screw Terminal and 2 Pin Header Connector Provided for Supply Input
  • Screw Terminal and 2 pin header provided for 5V DC & 12V DC Output
  • 3 Pin Screw Terminal Provide for Relay output Connections NO/NC
  • 3 Pin Header Connector for TTL + Signal Trigger, and Low GND signal Trigger
  • Close The Jumper to trigger rely with low GND signal input

SCHEMATIC

large-current-relay-schematicPARTS LIST

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PHOTOS

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+9V TO 60V PWM 2.3A SOLENOID VALVE DRIVER USING DRV101

The DRV101 is a low-side power switch employing a pulse-width modulated (PWM) output. Its rugged design is optimized for driving electromechanical devices such as valves, solenoids, relays, actuators, and positioners. The DRV101 module is also ideal for driving thermal devices such as heaters and lamps. PWM operation conserves power and reduces heat rise, resulting in higher reliability. In addition, adjustable PWM potentiometer allows fine control of the power delivered to the load. Time from dc output to PWM output is externally adjustable. The DRV101 can be set to provide a strong initial closure, automatically switching to a soft hold mode for power savings. Duty cycle can be controlled by a potentiometer, analog voltage, or digital-to-analog converter for versatility. A flag output LED D2 indicates thermal shutdown and over/under current limit. A wide supply range allows use with a variety of actuators.

FEATURES

  • HIGH OUTPUT DRIVE: 2.3A
  • WIDE SUPPLY RANGE: +9V to +60V
  • COMPLETE FUNCTION
  • PWM Output
  • Internal 24 kHz Oscillator
  • Digital Control Input
  • Adjustable Delay (Capacitor C1)
  • Adjustable Duty Cycle P1 Potentiometer
  • Over/Under Current Indicator
  • FULLY PROTECTED
  • Thermal Shutdown with Indicator
  • Internal Current Limit

APPLICATIONS

  • ELECTROMECHANICAL DRIVERS:
  • Solenoids Positioners
  • Actuators High Power Relays/Contactors
  • Valves Clutch/Brake
  • FLUID AND GAS FLOW SYSTEMS
  • INDUSTRIAL CONTROL
  • FACTORY AUTOMATION
  • PART HANDLERS
  • PHOTOGRAPHIC PROCESSING
  • ELECTRICAL HEATERS
  • MOTOR SPEED CONTROL
  • SOLENOID/COIL PROTECTORS
  • MEDICAL ANALYZERS

SCHEMATIC

PARTS LIST

PHOTOS

PCB

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