In this slide deck I discuss strategies for using the Atmel 328P chip in your own circuits and building printed circuit boards from your designs.

1. Product Development with the
Atmel 328P Chipset (Arduino UNO)
“The Arduino Logo is a Trademark [of Arduino AG] and
can only be used by Arduino on products, websites and
publications.”
https://www.arduino.cc/en/Trademark/CommunityLogo
Or some
other
chipset!
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2. Outline
• Why I like using Arduino
• Prototypes on board / off board
• Things you need to know … tech tips
• Drawing the schematic
• Ordering a Printed Circuit board
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3. Goal
• Create a circuit that we needed!
• Prototyping the circuit
• Design considerations
• Produce several copies (Printed Circuit Board)
• Document the circuit (Schematic) and the
program (Arduino sketch) … adding Libraries
for our new Shield!!
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4. Prying the Chip off The board
• Don’t bend the pins!
• Picture of Chips, of Blank Shields, of
Capacitors, the 7805 regulator, the 3.3 V
regulator, talk about voltage levels all in one
slide!!!!!
• And onto the breadboard.
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5. Going Off Board 1 of 13
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6. Going Off Board 2 of 13
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7. Going Off Board 3 of 13
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8. Going Off Board 4 of 13
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9. Going Off Board 5 of 13
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10. Going Off Board 6 of 13
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11. Going Off Board 7 of 13
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12. Going Off Board 8 of 13
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13. Going Off Board 9 of 13
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14. Going Off Board 10 of 13
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15. Going Off Board 11 of 13
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16. Going Off Board 12 of 13
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17. Going Off Board 13 of 13
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18. Going off Board I
• Clock
• Power
• USB
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19. Going Off-Board II
• Breadboard
• Power
– There is a power regulator on the UNO but how
much can power can it source?
• Crystal
– I found that the breadboard had stray capacitance
• Test using Blink
– Pin 13 Onboard or off
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20. Going off Board II
• FTDI – Your own programmer
• Available at Sparkfun (model number)
• FT232RL
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21. Arduino IDE
• Get the prototype to work!
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22. Other Arduinos and Chipsets
• It seems that everyday you hear about a new
small board computer.
• These techniques are equally valuable for
building a custom HAT for Raspberry Pi
• Did I try Raspberry Pi?
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23. Catching the Bus
• I2C
• SPI
• Dallas One Wire
… the list goes on!
Picture of bits!
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24. Pictures of Breadboards
USB Device Circuit4/27/2020 24
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25. Introduction to Kicad
• Drawing the Schematic (you can help me with
my USB project)
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26. Kicad
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27. Next Steps
• Build a Prototype or two (wired, soldered)
• Design and order a Printed Circuit Board (we
used to print these at home)
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28. Pictures of prototypes
LCD Display Shield
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29. Drawing the Schematic
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30. The finished artwork
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31. Moving to a finished PCB
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32. The finished PCB!
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33. Surface Mount Technology (SMT)
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34. Oops!
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35. Pictures of the Final Board
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36. Useful Things
• Interrupts
• Timers
• Pulse Width Modulation
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37. Keep it Going!
• Thanks!
• Evan Williams
• Evan Williams Consulting, LLC
• www.evanwilliamsconsulting.com
• www.evtechnote.us
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