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how can i best repeat this pull down resistor network with 4 other buttons?
hoodude717

hoodude717

@copilot how can i best repeat this pull down resistor network with 4 other buttons?
1y

copilot

To replicate this pull-down resistor network for additional buttons, you'll follow a similar schematic structure as already established in your project. Each button will need its own pull-down resistor to ensure it reads low when not pressed and high (through connection to a digital input pin set to internal pull-up or an external pull-up resistor) when pressed. These connections will enable digital reading of button states.
Since you're creating a light-following robot, and assuming these buttons are for general input (like mode selection, start/stop, etc.), I'll suggest connecting each to available digital I/O pins on the Arduino Nano. Based on the provided schematic, I'll assume some pins are free and choose them arbitrarily, noting that you should adjust based on your actual pin usage.
Let's name the new components starting from R2, Button2 up to R5, Button5, assuming you're incrementing the designators sequentially.
Components Needed:
  • Resistors (Pull-down):
    • 4x 10kΩ Resistors (same specifications as R1, for consistency).
  • Buttons:
    • 4x Buttons (same specifications as Button1).
New Button and Resistor Designations:
  • Resistors: R2, R3, R4, R5.
  • Buttons: Button2, Button3, Button4, Button5.
Connections for Each New Button Network:
  • For Button2:
    • Connect R2:1 to Button2:1.
    • Connect R2:2 to Q1:(Available Digital Pin), assuming Q1:D2.
    • Connect Button2:2 to Q1:GND.
  • For Button3:
    • Connect R3:1 to Button3:1.
    • Connect R3:2 to Q1:(Available Digital Pin), assuming Q1:D3.
    • Connect Button3:2 to Q1:GND.
  • For Button4:
    • Connect R4:1 to Button4:1.
    • Connect R4:2 to Q1:(Available Digital Pin), assuming Q1:D4.
    • Connect Button4:2 to Q1:GND.
  • For Button5:
    • Connect R5:1 to Button5:1.
    • Connect R5:2 to Q1:(Available Digital Pin), assuming Q1:D5.
    • Connect Button5:2 to Q1:GND.
Summary of the Assumption
  • I've assumed that you'll connect each new button to an available digital pin on the Arduino Nano.
  • The choice of pins (D2-D5) is arbitrary for demonstration; please adjust based on your actual available pins and project needs.
  • Each button is using a 10kΩ pull-down resistor, like your initial button setup, to ensure consistent behavior across all buttons.
This setup allows you to have consistent, reliable button inputs for your Arduino Nano-based light-following robot, enabling more interactive and complex control schemes. Remember to configure the chosen digital pins as inputs in your Arduino sketch, utilizing pinMode() and digitalRead() functions appropriately.
1y
3
what is the best way to layout 5 buttons with pull down resistors and reading ca...
hoodude717

hoodude717

nevermind
1y
hoodude717

hoodude717

@copilot what is the best way to layout 5 buttons with pull down resistors and reading cables into terminals A2-A6
1y

copilot

For laying out 5 buttons with pull-down resistors on an Arduino Nano and connecting them to terminals A2-A6, you will want to follow a systematic approach to ensure clarity, ease of debugging, and minimal interference in your PCB design on Flux. Here's a suggested approach based on common practices:
1. Using Pull-Down Resistors:
  • Selection of Pull-Down Resistors: For button inputs, 10kΩ is a standard choice for the pull-down resistor. It ensures a well-defined logic level when the button is not pressed (LOW when using a pull-down configuration), and does not draw too much current when the button is pressed.
2. Connection of Buttons and Resistors:
Each button will be connected along with a pull-down resistor. The connection scheme for one button with its pull-down resistor to an input terminal (e.g., A2) is as follows:
  • Button (SWx):
    • One terminal connected directly to the respective Arduino terminal (A2-A6).
    • The other terminal connected to the positive supply voltage (5V).
  • Pull-Down Resistor (R Buttonx):
    • One terminal connected to ground (GND).
    • The other terminal connected to the same Arduino input terminal as the button (A2-A6) before the button connection to 5V (this effectively goes between the button connection to 5V and the input pin, ensuring that the pin is pulled to GND when the button is not pressed).
3. Actual Connections for 5 Buttons:
Assuming five buttons designated as SW2 to SW6 and their corresponding pull-down resistors as R Button2 to R Button6, here’s how you would connect to terminals A2-A6:
  • Button to Arduino Nano:
    • Connect SW2:Px to Q1:A2
    • Continue similarly for SW3 to Q1:A3, SW4 to Q1:A4, SW5 to Q1:A5, and SW6 to Q1:A6.
  • Other Terminal of Button to 5V:
    • Connect the other pin of each button to Q1:5V.
  • Pull-Down Resistors:
    • Connect R Button2:1 to Q1:GND and R Button2:2 to Q1:A2.
    • Apply a similar scheme for the rest of the buttons, from R Button3 to R Button6, corresponding to terminals A3-A6.
4. Layout Tips:
  • Keep Trace Lengths Short: This reduces interference and potential for noise.
  • Group Each Button With Its Resistor: This makes the layout cleaner and the schematic easier to understand.
  • Avoid Crossing Traces: If possible, lay out the components and traces to minimize crosses. This simplifies the PCB and reduces the chance of creating shorts.
5. Finalizing the Design:
After laying out the components and routing the traces in Flux, review the design to ensure all connections are correct and there are no unnecessary traces or shorts. Use the built-in design rule checker (DRC) to verify the board meets the required specifications.
This systematic approach should provide a clear and functional layout for interfacing 5 buttons with pull-down resistors to an Arduino Nano for your light-following robot project.
1y
hoodude717

hoodude717

nevermind
1y

copilot

Alright, if you have any more questions or need further assistance with your project, feel free to ask!
1y
hoodude717

hoodude717

@copilot how can i best connect a push button with a pull down resistor to ground with a wire connecting to pin A2
1y

copilot

To connect a push-button with a pull-down resistor to ground, and have it signal to pin A2 on the Arduino Nano (Q1), you'll follow a schematic that ensures the button press changes the state read by A2 from LOW to HIGH properly. Here's a simple way to achieve that:
Components Needed:
  • Push Button: Designated as SWx (where x is your specific instance number if you have multiple buttons).
  • Pull-Down Resistor: Typically, a 10kΩ resistor (R Buttonx) is used to ensure a clear LOW signal when the button is not pressed.
Connection Overview:
  1. Button Connection:
    • One terminal of the button (let's say SWx:P1) connects directly to pin A2 on the Arduino Nano (designated as Q1:A2).
    • The other terminal of the button (SWx:P2) connects to the positive voltage supply, in this case, 5V (Q1:5V).
  2. Pull-Down Resistor Connection:
    • One end of the pull-down resistor (R Buttonx:P1) will connect to ground (Q1:GND).
    • The other end (R Buttonx:P2) connects to Q1:A2, where the first terminal of the button connects. This ensures that A2 is pulled to a LOW state when the button is not pressed.
Step-by-Step Connection:
  • Connect SWx:P1 to Q1:A2.
  • Connect SWx:P2 to Q1:5V.
  • Connect R Buttonx:P1 to Q1:GND.
  • Connect R Buttonx:P2 to Q1:A2.
Layout Tips:
  • Try to place the pull-down resistor close to the Arduino Nano pin A2 to minimize the length of the trace that can act as an antenna, reducing potential noise.
  • Keep the wiring neat and if possible, use PCB traces instead of wires for a more stable and reliable connection in a finished project.
  • When laying this out on Flux for the PCB design, ensure the routing is clean, and avoid unnecessary crossings that could complicate the PCB manufacturing process.
Final Consideration:
This setup ensures that when the button is not pressed, pin A2 is at a LOW logic level due to the pull-down resistor. When the button is pressed, A2 is connected directly to 5V, reading a HIGH logic level, allowing you to detect button presses in your Arduino Sketch effectively.
Let me know if you need further clarification or assistance with another part of your project!
1y
2
U2
U1
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  • Generic Resistor
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  • Generic Capacitor
    Generic Capacitor
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  • Generic Inductor
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Arduino Nano Basic Light Following Robot

Arduino Nano Basic Light Following Robot thumbnail
Circuit board design for an arduino nano to connect it to sensors and servos and motors.

Properties

false

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Qty 1

LCSC

$0.07–$0.26

Mouser

$0.40

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