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Found 1 result

  1. The Full-Bridge (H-Bridge) is the most popular driver circuit to control brushed DC motors. The main advantage of a full bridge driver is the ability to change the rotation direction of the motor, without manually reversing the supply wires. I’ve already published the Half-bridge and H-bridge driver circuits before; however, I was receiving many requests and comments for a standalone H-Bridge driver to control the DC motors, without using any external board or a controller. Therefore, I introduced a cheap, compact, and standalone H-Bridge DC motor driver that can be embedded in a variety of mechatronic devices. A cheap ATTiny13 microcontroller controls everything and I used the Arduino IDE to write the microcontroller code. All components, except for the connectors, are SMD. The motor can be controlled in three modes: Forward, Stop, and Reverse. The user can adjust the rotation speed of the motor separately in the forward or reverse direction, using two panel-mounting potentiometers. The low ON-Resistance of the Mosfets allows you to use this circuit in high currents. To design the schematic and PCB, I used Altium Designer 22. The fast component search engine (octopart) allowed me to quickly collect the components’ data and generate the BOM as well. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. To test the driver board, I disassembled an electric toy car and used its powerful 775 DC motor (plus the gearbox). It’s a cool experience, just build one and have fun! Specifications Input Voltage (Motor): 8-40VDC Supply Voltage (Controller): 12VDC PWM Frequency: 25KHz Motor Control: Forward-Stop-Reverse Motor Speed: [0 to 100%] Forward, [0 to 100%] Reverse References Article: https://www.pcbway.com/blog/technology/A_Standalone_Full_Bridge_DC_Motor_Driver_2c7c2086.html [1]: ATTiny13 MCU: https://octopart.com/attiny13a-ssur-microchip-77761976?r=sp [2]: 78L05 SOT89: https://octopart.com/ka78l05aimtf-onsemi-84329328?r=sp [3]: IRF3205 D2PACK: https://octopart.com/irf3205strlpbf-infineon-65873335?r=sp [4]: IR2104: https://octopart.com/ir2104spbf-infineon-65872813?r=sp [5]: MicroCore Arduino Package: https://github.com/MCUdude/MicroCore [6]: Complied HEX file: https://drive.google.com/file/d/1_FEbxj3XtWoZCNCxfpgcvCwcf9j8cqj-/view?usp=sharing
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