Wireless Light Level Monitor – Transmitter Unit
https://www.electronics-lab.com/project/wireless-light-level-monitor-transmitter-unit/
Wireless Light Monitor: OPT101 sensor, ATMEGA328, and 433MHz RF. Displays 0-100% light on a 0.96" OLED.
Load Cell Amplifier HX711 for Weigh Scale and Strain Gauge Sensor
https://www.electronics-lab.com/project/load-cell-amplifier-hx711-for-weigh-scale-and-strain-gauge-sensor/
This load cell amplifier uses the HX711 24-bit ADC for weigh scales and control. It directly interfaces with bridge sensors using a PGA (gains of 32, 64, or 128) and includes an on-chip regulator/oscillator, simplifying its use.
Ultra Precision Zero Drift Current Sensor – Range Up To 12A
https://www.electronics-lab.com/project/ultra-precision-zero-drift-current-sensor-range-up-to-12a/
This LTC6102-based Ultra Precision Zero Drift High-Side Current-Sense Amplifier measures load current by amplifying the voltage drop across an on-board resistor. It offers precise, proportional unipolar output (200mV/A nominal), operates on 4V to 60V supplies, and eliminates ground-loop errors.
Dual-Channel, 0V to 76V Current-Sense Amplifier
https://www.electronics-lab.com/project/dual-channel-0v-to-76v-current-sense-amplifier/
This is a dual-channel current sense amplifier that utilizes the MAX40201F, a high-precision, high-voltage current-sense amplifier. This circuit measures the current flowing through a shunt resistors and provides a voltage output proportional to that current. The MAX40201F is available in various gain configurations; this project employs the MAX40201F with a gain (G) of […]
Wireless Humidity and Temperature Transmitter – Arduino
https://www.electronics-lab.com/project/wireless-humidity-and-temperature-transmitter-arduino/
The project presented here is a Wireless Humidity and Temperature Transmitter that utilizes a DHT22 sensor to measure temperature and humidity levels. The data is then transmitted via an NRF24L01 RF transceiver module to a receiver board, which displays the readings on an OLED display. Here’s a breakdown of the project’s components and features: Components […]
434Mhz Arduino Wireless Analog Sensor Transmitter
https://www.electronics-lab.com/project/434mhz-arduino-wireless-analog-sensor-transmitter/
This Wireless Analog Sensor project is a cost-effective solution for transmitting live data and enabling continuous monitoring, logging, and plotting sensor measurements. The system utilizes a 434MHz RF module and an Arduino-compatible microcontroller, ATMEGA328, to transmit data from a sensor connected to the A1 analog pin. The data is received and displayed on an OLED […]
10μA-10mA Low-Side Current Sensor
https://www.electronics-lab.com/project/10%ce%bca-10ma-low-side-current-sensor/
This single-supply, low-side, current-sensing solution accurately detects load current between 10μΑ and 10mA. A unique yet simple gain-switching network was implemented to measure the three-decade load current range accurately. The linear range of the output is from 100mV to 4.90V. INA326 instrumentation amplifier is used since low-side sensing is desirable because the common-mode voltage is […]
Precision Switched Integrator Transimpedance Amplifier
https://www.electronics-lab.com/project/precision-switched-integrator-transimpedance-amplifier/
This project is based on IVC102 chip from Texas Instruments. This chip is a precision integrating amplifier with FET OPAMP, integrating capacitors, and low leakage FET switches. It integrates low-level input current for a user-determined period, storing the resulting voltage on the integrating capacitor. The output voltage can be held for accurate measurement. The IVC102 […]
Signal Conditioner for Piezoelectric Sensors
https://www.electronics-lab.com/project/signal-conditioner-for-piezoelectric-sensors/
This is a simple signal conditioner circuit for Piezoelectric sensors. The circuit converts the input charge to voltage and the level shifts to the ADC input range of 0.1 V to 2.4 V. The circuit is built using AD8608 OPAMP from Analog devices. Piezoelectric elements are used to construct transducers for a vast number of […]
Capacitive Humidity Sensor to Analog Output Converter
https://www.electronics-lab.com/project/capacitive-humidity-sensor-to-analog-output-converter/
The project presented here is an analog capacitive humidity sensor converter board suitable for various humidity measurement tasks. The circuit comes from Texas Instruments application note (see below). Most conventional capacitive proximity sensors produce a digital signal, but this circuit produces a DC output voltage that is a function of the relative humidity of the […]