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how do i connect its analog to the seed
adsazad

adsazad

@copilot how do i connect its analog to the seed
1y

copilot

To connect the analog signals to the Seeed XIAO RP2040 U1, you'll want to make use of the analog pins available on the XIAO RP2040. The XIAO RP2040 has several analog input pins labeled as Ax.
Based on the components you have, here's how you can make the connections:
  1. Connect the analog source to one of the analog input pins on the XIAO RP2040. For this example, let's assume the analog source is connected to the tip (T) of the TRS jack J1:
    Connect J1:T to U1:P26_A0_D0
  2. Make sure the ground connection is established:
    Connect J1:S to U1:GND
  3. Power the Seeed XIAO RP2040. This is already done in your project:
    • V1:(ANODE)\text{(ANODE)} to U1:(GND)\text{(GND)}
    • V1:(CATHODE)\text{(CATHODE)} to U1:(5V)\text{(5V)}
These connections will allow you to use the analog input A0 on the XIAO RP2040 to read the analog signal coming from the TRS jack.
Here's the summary of the connections:
  • Connect J1:T to U1:P26_A0_D0.
  • Connect J1:S to U1:GND.
Let me know if you need any more details!
1y
adsazad

adsazad

where do i connect third leg
1y

copilot

The third leg of the TRS jack $J1$ is labeled as R (Ring). The connection of this leg depends on the specific use case, but typically:
  • For a mono audio jack: The ring might be left unconnected or connected to ground.
  • For a stereo audio jack: The ring might carry the right audio channel signal.
  • For differential signaling or additional analog input: The ring could be used to carry the second signal.
Assuming this is a mono connection and we want to keep it simple, you can connect the ring to ground (GND). This helps to ensure signal integrity by providing a common reference point.
Here's the connecting instruction for grounding the ring:
  • Connect $J1$:R to $U1$:GND.
The updated set of connections will be:
  • Connect $J1$:T to $U1$:P26_A0_D0.
  • Connect $J1$:S to $U1$:GND.
  • Connect $J1$:R to $U1$:GND.
Let me know if this matches your intended use case or if you have a different need for the ring pin connection.
1y
adsazad

adsazad

i want sterio input
1y

copilot

For stereo input, you can utilize another analog pin on the Seeed XIAO RP2040 for the ring (right audio channel) connection.
Here's how you can make the connections for stereo input:
  1. Tip (T): Connect this to an analog pin for the left audio channel.
  2. Ring (R): Connect this to another analog pin for the right audio channel.
  3. Sleeve (S): Connect this to ground.
For example:
  • Connect the tip (left channel) to P26_A0_D0.
  • Connect the ring (right channel) to P27_A1_D1.
The connections would look like:
  • Connect $J1$:T to $U1$:P26_A0_D0.
  • Connect $J1$:R to $U1$:P27_A1_D1.
  • Connect $J1$:S to $U1$:GND.
This setup will allow you to read the left audio channel from P26_A0_D0 and the right audio channel from P27_A1_D1.
Here is the concise connection summary for stereo input:
  • Connect $J1$:T to $U1$:P26_A0_D0.
  • Connect $J1$:R to $U1$:P27_A1_D1.
  • Connect $J1$:S to $U1$:GND.
Let me know if this covers what you need or if you require further adjustments!
1y
how do i connect pan8403 to xiao
adsazad

adsazad

@copilot how do i connect pan8403 to xiao
1y

copilot

Sure, I'll help you with that. Here’s how you can connect the PAM8403 (an audio amplifier) to the Seeed Studio XIAO RP2040.
Let’s establish the necessary connections between the two components:
Power Connections
  • Connect U1:5V to IC1:PVDD_1 and IC1:PVDD_2.
  • Connect U1:3V3 to IC1:VDD.
  • Connect U1:GND to IC1:GND, IC1:PGND_1, and IC1:PGND_2.
Audio Input Connections
  • Connect U1:P27_A1_D1 to IC1:INL (for left audio input).
  • Connect U1:P26_A0_D0 to IC1:INR (for right audio input).
Output Connections
  • Connect speaker terminals to:
    • IC1:+OUT_L for the left speaker positive terminal.
    • IC1:-OUT_L for the left speaker negative terminal.
    • IC1:+OUT_R for the right speaker positive terminal.
    • IC1:-OUT_R for the right speaker negative terminal.
Additional Connections
  • Connect U1:3V3 to IC1:VREF (internal reference voltage).
  • Connect U1:GND to IC1:SHND (shutdown line to ground for normal operation).
Summary of Connections:
Here’s a quick list format for clarity:
Let me know if you need any further details or adjustments for your project!
1y
3
i applied digital filters to my audio. now where do i get the output from the se...
adsazad

adsazad

@copilot i applied digital filters to my audio. now where do i get the output from the see
1y

copilot

To obtain the output from the Seeed Studio XIAO RP2040 (102010428) after applying digital filters to your audio, you can utilize one of the available GPIO pins configured for Digital-to-Analog Conversion (DAC) if supported by your application, or you may output the processed audio data via a digital communication interface (e.g., I2C, SPI, UART).
Here are a couple of options to consider:
Option 1: Output via GPIO for DAC (if supported)
  1. Identify a GPIO pin on the RP2040 that supports DAC (usually available on some microcontroller boards but double-check the specs for your specific board).
  2. Connect the identified GPIO pin to the input of your amplifier or audio output device.
Option 2: Output via UART
  1. Use a UART pin to transmit the audio data.
  2. Connect the transmitter pin (U1) to the receiver of the external device you are sending the data to.
Example connection for UART output:
  • Digital Filtered Signal Output via UART: Connect U1 to the RX pin of your external device (e.g., another microcontroller, serial-to-audio converter).
Here's a more detailed list of connections to reflect the filtering audio output through UART:
Schematic Connections: Power and Ground Connections:
Make sure to configure your microcontroller's firmware to use the appropriate protocol and settings based on your selected method.
If you have a specific interface or detailed requirements in mind, let me know so I can tailor the recommendations accordingly!
1y
adsazad

adsazad

which port is for gpio in xiao
1y

copilot

The Seeed Studio XIAO RP2040 (102010428) provides several GPIO pins. Here are the available GPIO pins and their associated functions for the board:
  • U1 — GPIO26 / Analog A0 / Digital D0
  • U1 — GPIO27 / Analog A1 / Digital D1
  • U1 — GPIO28 / Analog A2 / Digital D2
  • U1 — GPIO29 / Analog A3 / Digital D3
  • U1 — GPIO6 / I2C SDA / Digital D4
  • U1 — GPIO7 / I2C SCL / Digital D5
  • U1 — GPIO0 / UART TX / Digital D6
  • U1 — GPIO1 / UART RX / Digital D7 / SPI CSn
  • U1 — GPIO2 / SPI SCK / Digital D8
  • U1 — GPIO4 / SPI MISO / Digital D9
  • U1 — GPIO3 / SPI MOSI / Digital D10
  • U1 — 3.3V power supply
  • U1 — Ground
  • U1 — 5V power supply
Example GPIO Usage:
For general-purpose output, you can use any of the GPIO pins in digital mode. For example, if you want to output a signal from GPIO26 (Pin 1 on U1):
  • Connect U1 to your external device where you need the GPIO signal.
  • Configure the corresponding GPIO in your firmware to work as an output.
Here is a list of the pin names to reference:
  • GPIO26: U1
  • GPIO27: U1
  • GPIO28: U1
  • GPIO29: U1
  • GPIO6: U1
  • GPIO7: U1
  • GPIO0: U1
  • GPIO1: U1
  • GPIO2: U1
  • GPIO4: U1
  • GPIO3: U1
You can choose any of these pins based on your project's needs and the specific configuration of your digital filter output. Let me know if you need help with firmware code or additional details on the connections!
1y
2
J1
IC1
End of Life
U1
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Brief Orange Ecto Goggles

Brief Orange Ecto Goggles
Description

Created
Last updated by adsazad
1 Contributor(s)
adsazad

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