spider robot electronic project page
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Simple Soil Moisture Sensor - Arduino Project
This is a simple Arduino project for a soil moisture sensor that will light up an LED at a certain moisture level. It uses the Arduino Duemilanove microcontroller.
This project employs a soil moisture sensor to monitor the moisture content of...
Microcontroller-based: Electric fan switching relay or triac
A project is underway to control the speed of an electric fan (220Vac, 60W, 5A max.) automatically using a microcontroller based on certain parameters.
The circuit design for controlling the speed of an electric fan involves several key components to ensure...
An Efficient Low-Power Arduino Switching Voltage Regulator
The voltage regulator integrated into the Arduino Uno is a linear-type regulator, which exhibits poor efficiency. When operating the ATmega238 at 5V with a 9V battery, nearly half of the battery's energy is wasted as heat by the regulator. This...
series robot circuit
For the second build in the Make It Last Build Series, a robotic plant is being constructed. This week focuses on assembling the control circuit, which will be used in future weeks to animate the plant. The basic circuit will...
Arduino GSM Shield
The Arduino GSM Shield connects an Arduino board to the internet using the GPRS wireless network. To use this module, it must be plugged onto the Arduino board, and a SIM card from a GPRS coverage provider should be inserted....
arduino controllers and sensors
The Arduino microcontroller board can supply a current of 40mA from its output connections, with digital outputs fixed at 5V for "ON" and 0V for "OFF." This current is suitable for LEDs, but devices like motors, solenoids, and high-brightness LEDs...
Personal Applause Sign
Construct a Hackduino board as outlined in the provided instructions. Detach the speaker from the wireless doorbell receiver, ensuring to leave as much wire connected to the receiver as possible.
The Hackduino board is a versatile and programmable platform that can...
Arduino Producing DTMF Tones
The project involves teaching an Arduino to generate DTMF (Dual-Tone Multi-Frequency) tones using the HT9000A DTMF chip. These tones are the familiar "touch tones" used in telephone systems. The output volume from the chip is low, suggesting the need for...
Power supplies for microcontroller based projects
This document discusses the use of small microcontrollers, such as those from the PIC and Atmel series, which typically operate at 5V and require less than 100mA for complete system functionality. Some PICs can function at lower voltages, such as...