Sensorism - Sensing the future today

 DIY 2 Wheel drive robotic car In this experiment we will learn building 2 wheel drive robotic car using 2wd kit and L298N motor driver. We will use Websockets to control this car from mobile browser.  Lets first start building the car. Components needed 1. 2WD car kit     a. Chassis     b. 2 BO motor with soldered wires     c. 2 BO Wheels     d. Screws, nuts and spacers     e. Mounting accessories     f. 12V Battery pack. You can use battery pack provided by kit     g. Front ball wheel 2. L298N motor driver 3. Jumper wires, DC female jack adaptor wire. 4. NodeMCU Connections NodeMCU     L298N driver           D2                         IN1                D5                         ...

Interfacing Load cell with ESP 8266 for measuring weights In the world of measuring weights, lets understand about an unsung hero capable of measuring with accuracy close to milligrams. We are talking about Load Cell. There are many kinds of load cell, we will try to understand compression based load cell that is used to measure downward force. Load cell in this case is a rectangular metal rod with strain gauges attached as shown in the above diagram. Strain gauges detects the deformity in the metal rod and sens a weak signal which has voltage difference proportional to deformity. This signal is then fed to a amplifier, in this case HX711 analog to digital converter which can then be processed by micro controller.  Detailed video on load cell below. Load cell has 4 wires. Red and black are for power supply to strain gauges and white and green are output. These wire are thin so i have soldered them to HX711 board input. RED -> E+ Black -> E- White -> A- Green -> A+ In th...

Making DIY robot car with RC receiver and transmitter YK04 In this tutorial, we will learn about YK04 receiver and its transmitter. We will also create a robotic car with 2 wheels to understand how RC receiver works. Detailed video below Parts Needed 1. RC transmitter and receiver pair 2. Jumper cables 3. L298N motor driver 4. BO motors with wheels 5. Mounting brackets, chassis and screws Circuit Wire connections RC receiver               L298N         5V                              5V     Gnd                           Gnd       D0                             IN1      D1                 ...