Circuit Documentation

Summary

This circuit involves a Raspberry Pi 4B connected to a projector through an HDMI to VGA adapter. The Raspberry Pi is powered by a 5V power adapter, which is connected to an AC wall plug point. The HDMI to VGA adapter also routes audio to the projector.

Component List

1. Raspberry Pi 4B

   • Description: A single-board computer used for various applications.
   • Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN, ETH, HDMI 0, HDMI 1, CAMERA, AV

2. Projector

   • Description: A device used to project visual content onto a screen.
   • Pins: HDMI/OUT, VGA/OUT, POWER, AUD/OUT

3. HDMI to VGA Adapter

   • Description: An adapter used to convert HDMI signals to VGA signals.
   • Pins: AUD/IN, HDMI/IN, VGA, AUD/OUT

4. 5V Power Adapter

   • Description: A power adapter that converts 240V AC to 5V DC.
   • Pins: 5V, 240V/AC

5. AC Wall Plug Point

   • Description: A standard AC wall plug point.
   • Pins: E, N, L

Wiring Details

Raspberry Pi 4B

• 5V pin is connected to the 5V pin of the 5V Power Adapter.
• HDMI 0 pin is connected to the HDMI/IN pin of the HDMI to VGA Adapter.
• AV pin is connected to the AUD/IN pin of the HDMI to VGA Adapter.

Projector

• VGA/OUT pin is connected to the VGA pin of the HDMI to VGA Adapter.
• AUD/OUT pin is connected to the AUD/OUT pin of the HDMI to VGA Adapter.

HDMI to VGA Adapter

• HDMI/IN pin is connected to the HDMI 0 pin of the Raspberry Pi 4B.
• AUD/IN pin is connected to the AV pin of the Raspberry Pi 4B.
• VGA pin is connected to the VGA/OUT pin of the Projector.
• AUD/OUT pin is connected to the AUD/OUT pin of the Projector.

5V Power Adapter

• 5V pin is connected to the 5V pin of the Raspberry Pi 4B.
• 240V/AC pin is connected to the N pin of the AC Wall Plug Point.
• 240V/AC pin is also connected to the L pin of the AC Wall Plug Point.

AC Wall Plug Point

• N pin is connected to the 240V/AC pin of the 5V Power Adapter.
• L pin is connected to the 240V/AC pin of the 5V Power Adapter.

Code

There is no code provided for this circuit.