Table of contents

L01: Signals

Type of Signals Associated with Sensors and Actuators

Signal Amplification and Conditioning (Inverting amplifiers and Instrumentation amplifiers)

L02: DAQ & Computer Integration

DAQ Systems to Acquire and Generate Signals

Sensitivity, Resolution, Noise, Error, etc. associated with Acquired and Generated Signals

L03: Measurement (Sensors)

Measurement of Load, Angular Speed (RPM), Displacement, Velocity, Acceleration, Pressure, Temperature, Flow, Motor Current, etc.

L04: Speed Control of Motors

Speed control of Motors (PWM DC Motor Speed control and Stepper Motor control)

E01: Weight Measurement Using Bar Type Load Cell, HX711, and Arduino Uno R3

Video link for experiment on use of load cell for weight measurement

Arduino IDE Code for Load Cell Experiment

Activity sheet for weight measurement using load cell

Arduino R3 Datasheet

HX711_Datasheet

Docklight downlad link / Coolterm download link

E02: Pressure measurement using piezoresistive material

Arduino code for Pressure Measurment Experiment

Activity sheet for weight measurement using load cell

BMP180_Datasheet

E03: Temperature measurement using NTC thermistor

Here, Steinhart-Hart equation relating 1/T to log(R) is calibrated for a NTC (negative temperature coefficient) thermistor. Then temperature is predicted for unknown cases. Accuracy of prediction in range considered is around 1-2 degree Celsius. 

Code for temperature measurement using NTC thermistor

Code for temperature measurement using Steinhart-Hart Equation 

Interactive python (e.g. google colab) code for calibrating Steinhart-Hart eq. with exp. data 

Python code for calibrating Steinhart-Hart eq

Sample data for resistance vs temperature 

E04: Acceleration measurement using MEMS based accelerometer

Circuit layout for this experiment, libraries that need to be installed, MPU 6050 features, intricacies of the experiment, capturing serial data using Docklight, postprocessing of captured data, etc. are described in this video. 

Arduino code for MPU6050 acceleration measurement 

e05: Serial data communication between Nodemcu 1.0 (as master) and Arduino Uno (as slave)

Circuit layouts

Circuit layouts for UART, I2C, SPI based data transfer from Nodemcu to Arduino Uno are given here.

Nodemcu_Master_UART

Use this code to have Nodemcu 1.0 as master for UART based serial communication. Code

ArduinoUno_Slave_UART

Use this code for UART (universal asynchronous receiver transmitter) based serial communication. Code

NodeMcu_Master_I2C

Use this code for data transfer from Nodemcu 1.0 as master to Arduino Uno using I2C (inter integrated communication). Code

ArduinoUno_Slave_I2C

Use this code for serial communication from Nodemcu to Arduino Uno using I2C. Code

NodeMcu_Master_SPI

Use this code for serial communication from Nodemcu to Arduino Uno using SPI. Code

ArduinoUno_Slave_SPI

Use this code for serial communication from Nodemcu to Arduino Uno using SPI. Code

E06: DC Motor Control (PWM)

Code to control brightness of LED

Code to control the speed of a DC Motor

E07: Stepper Motor Control

Instruction and Experiment on Stepper Motor Control

Code for CW and CCW Rotation

Code for Command Based Operations

E08: Operational Amplifier Circuits

Thank you