Low-Cost DC Motor Direction Controller with Fast Brake using 2 Relays

  • Rajkumar Sharma
  • 71 Views
  • easy
  • Tested
  • SKU: EL118118
  • Quote Now

The project presented here is a low-cost easy to use DC brushed motor direction controller with fast-brake, the project was built using two 12V Relays, 2 x BJT transistors, and 2 x tactile switches. The two LEDs are provided to display the motor direction, 2 tactile switch controls the direction of the motor.

Operation

Connect 12V DC power supply to connector CN1, connect 12V DC brushed Motor to CN2. The motor will run in any direction by pressing any of the switches, other switch will rotate the motor in another direction. When the user leaves the switch fast brake apply as both terminals of the motor are short when both relays are in an OFF state.

Features

  • Operating Supply 12V to 14V DC
  • Motor Load Up to 10A
  • Fast Brake while changing the direction
  • 2 x LED to display the direction of the motor
  • 2 x Tactile Switches to Control the Direction
  • PCB Dimensions 52.55 x 43.18 mm

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIER PART NO
11CN12 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
21CN22 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
31C1470uF/25VNICHICONDIGIKEY493-1553-ND
41C20.1uF/50V SIZE 0805MURATA/YAGEODIGIKEY
52D1,D3SM4007 SMD DIODE DIGIKEYS1MBDITR-ND
62D2,D4LED SMD SIZE 0805OSRAMDIGIKEY475-1278-1-ND
72Q1,Q2BC847 NEXPERIADIGIKEY1727-2924-2-ND
82RE1,RE212V RELAYTE CONNECTIVITYDIGIKEYPB2029-ND
92R1,R41K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
102R2,R52K2 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
112R3,R610K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
121SW1TACTILE SWITCHNKK SWITCHDIGIKEYHP0215AFKP2-ND
131SW2TACTLIE SWITCHNKK SWITCHDIGIKEYHP0215AFKP2-ND

Connections



Gerber View

Photos

Video

BC847 Datasheet

BC846-D

PCB

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