Arduino Compatible OLED Board with 4 Channel 16-Bit ADC

Arduino Compatible OLED Board with 4 Channel 16-Bit ADC

This board consists of Arduino-compatible hardware which includes an OLED display, ADS1115 4-Channel 16Bit ADC, Arduino-compatible Microcontroller ATMEGA328, a connector for Arduino Programming, a connector for 4 Channel Analog input, and a connector for a couple of I/O lines....

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Half-Bridge with Ultra-Precise Current Sense Feedback for Solenoid

Half-Bridge with Ultra-Precise Current Sense Feedback for Solenoid

A Half-bridge converter is widely used in applications such as DC-DC converters, switch mode power supplies, inverters, motor drivers, resistive loads, and solenoid drivers. This project consists of an IR2104 Half-bridge driver chip, 2 x DPAK MOSFETS, and an INA293 precision current...

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Xenon Flash Tube Driver

Xenon Flash Tube Driver

This is a Xenon Flash tube driver board and consists of a high voltage AC to DC converter circuit, a DC storage capacitor, a trigger circuit that will fire the xenon lamp, an Optocoupler to control the flashes etc. The circuit requires 220VAC and trigger pulse which should be between...

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Voltage Attenuator

Voltage Attenuator

The project shown here converts bipolar +/-10V (Dual 10V) signal and provides a single-ended 0 to 5V signal. The circuit attenuates a +/-10V, 10Khz bandwidth bipolar signal converts to a single-ended signal, and also filters it by a 3rd-order Butterworth filter to drive a single-ended...

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Photo Diode Amplifier

Photo Diode Amplifier

This small module is a photodiode amplifier. The circuit consists of an OPAMP configured as a transimpedance amplifier for amplifying the light-dependent current of the photodiode. A small bias voltage is derived from the positive supply and applied to the op amp’s non-inverting...

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Adjustable Current Source – 0 to 1A

Adjustable Current Source – 0 to 1A

  This voltage-to-current (V-I) converter delivers a well-regulated current to a load. The circuit accepts an adjustable input voltage from Trimmer potentiometer PR1 and converts it to an output current from 0A to 1A. The current is regulated by feeding the voltage across a...

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16-Bit I/O Expander with Serial Interface (SPI or I2C)

16-Bit I/O Expander with Serial Interface (SPI or I2C)

This project provides 16-bit, general-purpose parallel I/O expansion for I2C or SPI bus applications. The MCP23017 chip supports the I2C interface and the MCP23S17 chip is used for the SPI interface. The board can be populated with either SPI or I2C chip. Follow the connection...

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2 Channel Ultra-Precise Current Sensor

2 Channel Ultra-Precise Current Sensor

The project described here is a two-channel ultra-precise, current-sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 120 V. The INA2290A1 chip is the heart of the project. The ultra-precise current measurement accuracy is...

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