Dual Motor L298 H-Bridge Control project can control two DC motors OR single motor with 2X current. 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
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
Power-On LED indicator
Header Connector for Inputs and PWM
On Board PCB Solderable Jumpers for Enable
Screw terminal connector for easy input supply (PWR) / output (Motor) connection
L298 to Arduino Nano Connections>I1>D4,I2>D5,E1>D6,I3>D9,I4>D10,E2>D11
Quad Channel Relay Board Arduino Nano Shield is a simple and convenient way to interface 4 relays for switching application in your project.
Input supply 12 VDC @ 170 mA
Output four SPDT relay
Relay specification 5 A @ 230 VAC
Trigger level 2 ~ 5 VDC from Arduino I/O D2,D3,D4,D5 Digital Lines
Power Battery Terminal (PBT) for easy relay output and aux power connection
LED on each channel indicates relay status
Applications: Robotics, Electronics projects, Industrial controls, Microwaves Oven, Fans, DC Motor, AC Lamp, Solenoids Remote Controls etc.
Relay Load (Contact Capacity of Relay)
- 7 A @ 230-250 VAC
- 10 A @ 120 VAC
- 10 A @ 24 VDC
- CN1 – CN4 Connector : Relay 1 to 4 (S1 to S4) Output (Normally Open/Normally Close)
- CN5 Connector : Control Signal Input, Trigger 2 to 5 VDC and Supply Input 12 VDC
- D2,D4,D6,D8 : Relay On/Off LED Indication
- CN6 , CN7 12V DC Input
Project has been designed around L293 H-Bridge for Bidirectional motor operations, & 555 Timer IC which has been used as PWM generator for speed control. L293 is capable of continuous output current 600mA. Operating voltage 5V DC. Specially designed for low voltage Mini motors. Great control on speed via onboard preset, while direction is controlled by changing jumpers settings. PWM Duty cycle range 20% to 90% . Great kit can be used in science projects, toys, mini motor speed controllers, robotics, model-making.
DC Motor Speed and direction controller project based on L293D H-Bridge and 555 Timer IC. 555 Generate PWM and L293D works as output driver. The 293D provides bidirectional drive current up to 600mA a voltage from 5V to 12V. L293D includes the output clamping diodes for protections.
- Supply 5 to 12 V
- 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
- PR1 : Preset Speed Adjust
- SW1 : 3Pin Jumper and Closer for Direction change
- CN1 : DC Motor Supply input 5V to 12V DC
The L293 and L293D devices are quadruple high-current half-H drivers. The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V. Both devices are designed to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.
Each output is a complete totem-pole drive circuit, with a Darlington transistor sink and a pseudo- Darlington source. Drivers are enabled in pairs, with drivers 1 and 2 enabled by 1,2EN and drivers 3 and 4 enabled by 3,4EN.
Circuit has been designed using HT12A Infra-Red Transmitter and HT12D Infra-red Receiver, and TA7354 Motor driver IC.
Remote Transmitter Schematic and PCB Layout
Receiver and Motor Driver Schematic