PCBWay 3rd PCB Design Contest
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Design 1/4
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Usability 2/4
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Creativity 3/4
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Content 4/4

This is home-made solder paste dispenser. Construction is printed on the 3D printer. The PCB is based on the basic connection of arduino nano with ULN2003 for stepper motor, and any button. The buttons are for controlling the direction of rotation of the stepper motor, and for changing the speed of rotation of the motor


Mechanical material


3D printed


PCB


Stepper motor


Schematic


All project data with source code is on the my github repository.

Bill of materials used in this project

Atmega 328P
1
Stepper motor 28BYJ48 5VDC
1
Crystal 16Mhz
1
Crystal 12Mhz
1
Mini USB 54819-0519 MOLEX
1
Button 1825965-1 TE Connectivity
3
ULN2003ADR
1
SMD led 0805
8
5mm White LED
1
Resistor 150Ohm 0805
6
Resistor 1kOhm 0805
8
Resistor 10kOhm 0805
1
Capacitor 22pF 0805
4
Capacitor 100nF 0805
3
10kOhm Trimer 3362P-1-103LF BOURN
1
CH340 USB to UART converter
1
Threaded rod M4 10cm length
1
Threaded insert M4 1386778 BOSSARD
5
Screw M3
2
Nuts to screws M3
2
Screw M4
4
May 21,2020
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    VOTING 1 votes
    • Marco Manuel from NETHERLANDS, THE
      • 8
        design
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        usability
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        creativity
      • 8
        content
      9.00