Tag Archives: Motor

12V NE555 PWM Controller


baelza.bubba @ instructables.com build his own PWM controller which is able to operate as a 12V Motor Speed Controller, LED Dimmer, Heat controller, voltage controller for an electrolytic etcher etc.


I did some hunting around on the interweb and found a pretty good starting point in Circuits Today, but then, I needed to make some modification and tweaking of the circuit. I wanted to add in a toggle switch, a DC power socket and a 2 pin screw terminal into the design to make it easier to make and use.

12V NE555 PWM Controller – [Link]

Wi-fi browser controlled servomotors

This instructable shows how to control some servomotors remotely in a wi-fi network, using an ordinary internet browser. This might be used in several applications: toys, robots, drones, camera pan/tilt, etc. The motors were attached to an Arduino Uno, which connects the wi-fi network through a ESP-8266 module. The control interface was designed with HTML and jQuery. by IgorF2 @ instructables.com

Wi-fi browser controlled servomotors – [Link]

Controlling DC motors with Arduino and L293


This tutorial shows how to interface DC motors using L293D motor driver IC and Arduino.

Controlling DC motors with Arduino and L293 – [Link]

Heat Activated Cooling Fan Controller


Heat activated cooling fan controller is a simple project which operates a brushless fan when the temperature in a particular area goes above a set point, when temperature return normal, fan automatically turns off. The project is built using LM358 Op-amp and LM35 temperature Sensor. Project requires 12V DC supply and can drive 12V Fan. This project is useful in application like Heat sink temperature controller, PC, heat sensitive equipment, Power supply, Audio Amplifiers, Battery chargers, Oven etc

Heat Activated Cooling Fan Controller – [Link]

ATtiny based bidirectional motor control using L293D


Rahul @ Xanthium has posted a tutorial on interfacing ATtiny with L293D:

In this tutorial we will learn to interface L293D with ATMEL ATtiny microcontroller and control them bidirectionally.The microcontroller used here is ATtiny2313A which is interfaced to two L293D motor control chips for controlling upto 4 DC brushed motors.You can control upto 8 motors if bidirectional control is not needed.
The ability to control upto 4 motors is essential when we are building 4 wheel drive robotic projects like Rovers or under water ROV’s.

ATtiny based bidirectional motor control using L293D – [Link]

1000 steps Servo motor


TheSuperSewcio @ instructables.com shows us how to control a servo motor in high precision using Arduino:

In many project like CNC machines people use stepper motors. They are probably always more expensive than servos. They can rotate 360°, 1 step = 1,8° (mostly). Servos can rotate only from 0° to 180°, 1 step = 1°. But why are they working this way, inside them we will find potentiometer which rotates as servo (up to 180°), but have 1024 steps.

1000 steps Servo motor – [Link]

5 Amp H-Bridge DC Motor Driver using MC33886


This tiny module has been designed to use in Robotics, Power tools, automotive applications. The module based on MC33886 from NXP, MC33886 is a monolithic power IC comprising control logic, charge pump, gate drive, and low RDS(ON)MOSFET output H-Bridge circuitry in a small surface mount package. MC33886 is a monolithic h-Bridge ideal for fractional horsepower DC-Motor and bi-directional thrust solenoid control. The IC incorporates internal control logic, charge pump, gate drive, and low Rds. MOSFET output circuitry. The MC33886 is able to control continuous inductive DC load currents up to 5A. Output loads can be pulse width modulated (PWM) at frequencies up to 10 KHz. A Fault status output reports under-voltage, short-circuit, and over temperature conditions. Two independent inputs control the two half-bridge totem-pole outputs.


  • Supply 5V to 28V
  • TTL/CMOS compatible Inputs
  • Continuous DC Load Current up to 5.2A min
  • Output Current Limitation at min. 5.2A with PWM Current Regulation
  • Short-Circuit Shutdown for Output Currents over 8A
  • Logic Inputs TTL/CMOS Compatible
  • Operating Frequency up to 10 kHz
  • Over temperature and Short Circuit Protections
  • Under voltage disable Function
  • Output control via two independent inputs (forward, reverse, free-wheeling low/high)
  • Two disable inputs are provided: Low =True and High =True

5 Amp H-Bridge DC Motor Driver using MC33886 – [Link]

Dual DC Motor Driver For Robot with L298


Dual Motor L298 H-Bridge Control project can control two DC motors connected to it. The circuit is designed around popular dual H-Bridge L298 from ST. This board can be configured to drive a single motor with high current rating also. This can be achieved with the help of jumpers on the board. An onboard 5V regulator can take a maximum of 18V of DC input. Should you wish to drive this board with higher voltage then 18V, you will need to connect a external 5V regulated source to the logic circuit. For this you will need to remove J-5V. This board can fit in any small toy or robot due to small size and very low profile. L298 IC is mounted under the PCB in horizontal position to make board small and low profile to fit any small robot. On board 5V regulator can be used to power up external Micro-Controller board as well as internal logic supply.


  • Motor supply: 7 to 46 VDC
  • Open J-5V Jumper if Input Motor Supply is above 18V ( Required External 5V for Logic)
  • Control Logic Input: Standard TTL logic level
  • Output DC drive to motor: up to 2 A each (Peak)
  • On Board 5V Regulator (Close J-5V to Use On Board 5V Regulator)
  • Enable and direction control pins available
  • External Diode Bridge for protection
  • Heat-sink for IC

Dual DC Motor Driver For Robot with L298 – [Link]

Half Bridge Driver based on IR2104


This Half-bridge driver based on IR2104 gate driver IC and N channel Dpak MOSFET , The IR2104 is a high voltage, high speed power MOSFET driver with independent high and low side referenced output channels. HVIC and latch immune CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard COMOS or LSTTL output, down to 3.3V logic. A gate IR2104 driver is a power amplifier that accepts a low-power input from a controller IC and produces a high-current drive input for the gate of a high-power transistor such as a power MOSFET. In essence, a gate driver consists of a level shifter in combination with an amplifier.

This drive has many application, ranging from DC-DC power supply for high power density and efficiency, This project simplifies the design of control systems for a wide range of motor applications such as home appliances, industrial drives, DC brushed motors , Brushless motors, fans, Tesla Coil driver, Induction coil driver, LED driver, Halogen Lamp driver.


  • Load Supply 12 to 36V DC
  • Load Current 10Amps (Peak 20Amps)
  • Logic Supply 12 To 15V DC
  • Input Signals 3.3V to 15V
  • SMD based tiny design
  • Required Single PWM input
  • Shutdown Input
  • Screw Terminals for Load and Load Supply
  • Header Connector for Logic supply and inputs

Half Bridge Driver based on IR2104 – [Link]

Dual DC Motor driver using two L293D


Dual DC Motor driver using two L293D IC. The L293D device is quadruple high-current half-H driver. The 293D is designed to provide bidirectional drive current up to 600mA a voltage from 5V to 36V. It provides 600mA +600mA on each channel suitable for mini hobby robots. The board been designed mainly for small size robot, however this can be used for other application where two motor control required. L293D includes the output clamping diodes for protections. Each channel required two input signals PWM and DIR for full control. Separate logic supply to reduce dissipation.


  • Motor/Logic supply 5 to 36 V
  • Logic controls input 7 VDC max
  • Inhibit facility/enable
  • PWM Frequency 5KHz Maximum
  • High Noise immunity
  • Over temperature protection
  • Capable of delivering output current up to 600 mA per channel
  • The control/interface lines are accessible with Berg connector
  • Header connector for motor and supply connection

Dual DC Motor driver using two L293D – [Link]