72 CHANNELS SERIAL TO PARALLEL DRIVER BOARD USING 74HC595 & ULN2803

72 channels Serial (SPI) to parallel driver board has been designed for various applications. This project can be used as multi Solenoid driver, large size 7 segment display driver, bar graph driver, and LED driver. The project works with 5V logic levels. Output load supply 12V-48V DC and each output can drive 500mA load. I have used 3 digits 2.3Inch 7 segment displays as an example, this board can handle u ...

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50V – 10A BIDIRECTIONAL DC MOTOR DRIVER USING A3941

This tiny board designed to drive bidirectional DC brushed motor of large current. DC supply is up to 50V DC. A3941 gate driver IC and 4X N Channel Mosfet IRLR024 used as H-Bridge. The project can handle a load up to 10Amps. Screw terminals provided to connect load and load supply, 9 Pin header connector provided for easy interface with micro-controller. On board shunt resistor provides current feedback. Th ...

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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 ...

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4 Channel RC Servo Controller Board

This PIC microcontroller based RC driver is able to control 4 RC Servo by on board independent 4 potentiometer , 4X3PIN header for RC servo interface, screw terminal for supply input, on board power LED, optional 4X3PIN header connector for external potentiometer. Features Microcontroller based design for greater flexibility and ease of control Individual servo controlled via onboard preset or external pote ...

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5 channel LED candle

Download the full package (micro code and PCB data) The core of this project is a PIC12F508 which was strictly picked based on cost and availability. This firmware should be easy to port to just about any PIC micro. Code only uses 1 timer, no interrupts, 22 bytes ram, and 369 words of flash. The core of the firmware is 5 independent 16 bit linear feedback shift registers generating pseudo random bit streams ...

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ADI launches quad-channel protector

Analog Devices (ADI) has introduced a quad-channel protector and two multiplexers offering ±55V overvoltage protection (OVP) for precision converters, amplifiers and other components that operate from a voltage of 4.5V up to 36V. According to ADI the ADG5462F quad channel protector, ADG5248F 8:1 multiplexer and ADG5249F differential 4:1 multiplexer offer ±55V OVP in power-on and power-off stages and protect ...

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MOTM Compatible Dual Channel Quantizer

Introduction: This describes my original design dual channel quantizer inspired by Chris List’s ARP Style CV Quantizer design. My new implementation is an intelligent design that exploits the programmability of a Microchip PIC16F84. It will quantize voltages in 1/12 volt (semitone) or 1 volt (octave) steps from –10V to 10V. Quantization time is about 2ms per channel. Octave switches allow the user to select ...

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8 Channel PWM LED Chaser for 16F628A and 16F88

Description This neat little circuit provides 8 LEDs directly driven from the PIC along with a single mode control switch.  The firmware elsewhere on this page drives the LEDs with a 5 bit PWM signal providing each of the 8 LED channels with four levels of intensity; off, dim, mid, bright.  A number of sequences are programmed into the firmware to provide some interesting visual effects and chase sequences, ...

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Two-Channel PC Based Oscilloscope USB

Inroduction More and more experiments are now ‘PC-assisted.’ Also conventional acquisition systems are very expensive. Since portable  PCs are today common and a USB link is a better solutionhere we present an oscilloscope using USB port of the PC that operates at up to 10 kHz with ±16V input voltage. It has much more improved features than the PC-based oscilloscope . The oscilloscope uses IC PIC18F2550 fro ...

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4 Channel DMX512 Driver for PIC16F688

 Description This project is a 4 channel DMX512 driver board.  It features four power MOSFETs that can be configured to operate in PWM mode or as on/off outputs.  The driver can be configured to use any four consecutive addresses across the full 512 channel address range.  It can be used to drive LED arrays or low voltage lamps in PWM mode or operate relays in static mode. Feature list: 4 channels with low ...

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