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https://storage.googleapis.com/flux-comment-files/files/commentFileId-bfed0dbf17...
drclab

drclab

@copilot
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2y

copilot

I see multiple identical images of a schematic circuit diagram which appears to involve an ATmega328 microcontroller, a USB connector, and associated passive components. The diagram includes a crystal oscillator circuit for the microcontroller's clock and a USB to serial interface for communication.
If you have any questions or need help with a particular aspect of this circuit, please let me know, and I'll be happy to assist!
2y
1
connect it to atmega chip
drclab

drclab

@copilot connect it to atmega chip
2y

copilot

Sure, to connect Y1 (the 12 MHz crystal oscillator) to the ATMEGA328P-PU, you can follow these steps:
  1. Connect P1 pin of Y1 to XTAL1/PCINT6/T0SC1/PB6 pin (9) of U1.
  2. Connect P2 pin of Y1 to XTAL2/PCINT7/T0SC2/PB7 pin (10) of U1.
Please note that typically for a system clock, you would also add two capacitors (22pF-33pF) as per your crystal oscillator.
  • One end of each capacitor connects to either pin of the crystal oscillator and the other end of the capacitors goes to GND.
Remember, it's important to check your specific crystal datasheet's specifications for the right value of capacitors to use and whether it's required in the first place, since some crystals come with build-in load capacitors.
Additionally, the assumptions here are made based on the common practices for connecting crystals to microcontrollers, your specific design may require adjustments.
2y
2
U1
Not Recommended for New Designs
R1
Resistance
10kΩ
SW1
Y1
J4
D1
SW2
C1
Capacitance
22pF
J2
J5
J3
J1
Capacitance
100 nF
R2
Resistance
2.2kΩ
R3
Resistance
68 Ω
C2
Capacitance
4.7µF

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