NodeMCU devkit can be flashed with latest firmware using your MAC OS, before you going to start you need to disable the OSX “KEXT SIGNING “ feature. Apple OSX introduce the system integrity protection that disabled the modification system location
Wiring The Laser Transmitter on Photocell with Microcontroller
Another illustration how to build a simple physical intrusion detection with laser and photoresistor (or light-dependent resistor, LDR, or photocell). This guide shows how to wire and build a laser tripwire that triggers an alarm or output when the laser
Wiring the 314X Hall Effect Sensor Module
In this illustration we will going to wire the 3144 Hall Effect Sensor Module. Hall Effect Sensor are designed to respond in a wide range of positive or negative magnetic field. Linear Sensor are critical to the performance to their
Wiring the TCRT5000 Reflective Optical Sensor Module
This is the Line Tracking Sensor designed for line following robots. The board has two main components IR Transmitter and IR Receiver in one package named TCRT5000. The TCRT5000 are reflective sensors which include an infrared emitter and photo-transistor in
Wiring The Infrared Obstacle Avoidance Sensor Board
Infrared obstacle / Avoidance Sensor is an ambient light sensor adaptable can be place on your wheeled robots for obstacle avoidance or distance sensor. This sensor has a high precision components paired of infrared transmitter and receiver. The transmitter tubes
Wiring Light Blocking / Photo Interrupter Sensor
In this illustration we will going to wire the light interrupter. A photo interrupter is transmission type photo sensor that integrates optical receiving and transmitting elements in a single package please see the diagram below. Since the method involves light
Wiring the VNH2SP30 30A Monster Moto with MCU
This is essentially common named the monster shield that replace the popular l298n H-Bridge motor driver with a pair of VNH2SP30 a full bridge motor driver, this board is capable of driving a pair of high current motors. The VIN
OLED Voltage Meter on Voltage Divider
Another illustration that demonstrate the uses of Analog to measure the voltage of an external battery and integrate the area under the curve to arrive at the useful capacity of a battery mAH. If you’re going to calculate the desired
Security Alarm System on PIR Sensor and Keypad with Nano
Another illustration using PIR (Passive Infrared Sensor) with Numeric Pad and Arduino NANO, These project is based on Security System that’s detect human movement on the area and triggered the alarm. As you can see the diagram below it has
Working with NEXTION HMI TFT Touch Display
This is the NEXTION HMI a Human Machine Interface device that provides a GUI control of instruments that feeds from your microcontroller. The Nextion is simplified interface to visualize the process between a human and machine, these device is useful on
Wiring W5100 Ethernet Shield with ThingSpeak IOT Server
In this illustration we will going to wire the W5100 Ethernet shield with Arduino UNO, DHTXX Humidity Sensor along with ThingSpeak an AJAX Graphical Representation of the data coming from the Sensor which is connected to our MCU and push
Wiring DIGISPARK ATTINY85 with 096″ OLED Display Screen
In this illustration we will going to wire the ATTINY85 to control the OLED Screen using i2C Bus on ATTINY85 Microcontroller, I will just give an introduction what is ATTNY85 Microcontroller. The ATTINY 25,45, and 85 is a low power