Circuit Documentation

Summary

The circuit in question is designed to interface an ESP 32 Wroom Dev Kit with a TTL Serial JPEG Camera and a 0.96" OLED display. The ESP 32 serves as the central processing unit, controlling the camera and displaying information on the OLED. The camera is connected to the ESP 32 via serial communication, while the OLED is interfaced through I2C communication. The circuit is powered by the ESP 32's 5V and 3.3V outputs, which are connected to the respective power inputs of the camera and the OLED display.

Component List

TTL Serial JPEG Camera

• Pins: GND, RX, TX, CVBS, 5V
• Description: A camera module capable of capturing JPEG images and transmitting them over a serial connection.

0.96" OLED

• Pins: GND, VDD, SCK, SDA
• Description: A small OLED display for visual output, interfaced via I2C.

ESP 32 Wroom Dev Kit

• Pins: 3V3, EN, VP, VN, GPIO 34, GPIO 35, GPIO 32, GPIO 33, GPIO 25, GPIO 26, GPIO 27, GPIO 14, GND, GPIO 13, SD2, SD3, CMD, V5, GPIO 23, GPIO 22, TXD, RXD, GPIO 21, GPIO 19, GPIO 18, GPIO 5, GPIO 17, GPIO 16, GPIO 4, GPIO 0, GPIO 2, GPIO 15, SD1, SD0, CLK
• Description: A development board featuring the ESP 32 microcontroller, which provides WiFi and Bluetooth connectivity and a variety of GPIO pins for interfacing with peripherals.

Wiring Details

TTL Serial JPEG Camera

• GND: Connected to ESP 32 GND
• RX: Connected to ESP 32 GPIO 16
• TX: Connected to ESP 32 GPIO 17
• 5V: Connected to ESP 32 V5

0.96" OLED

• GND: Connected to ESP 32 GND
• VDD: Connected to ESP 32 3V3
• SCK: Connected to ESP 32 GPIO 22
• SDA: Connected to ESP 32 GPIO 21

ESP 32 Wroom Dev Kit

• GPIO 16: Connected to TTL Serial JPEG Camera RX
• GPIO 17: Connected to TTL Serial JPEG Camera TX
• GND: Connected to both TTL Serial JPEG Camera GND and 0.96" OLED GND
• V5: Connected to TTL Serial JPEG Camera 5V
• 3V3: Connected to 0.96" OLED VDD
• GPIO 22: Connected to 0.96" OLED SCK
• GPIO 21: Connected to 0.96" OLED SDA

Documented Code

No code has been provided for the microcontrollers in the circuit. Therefore, this section is currently empty. When code is available, it should be documented here with appropriate comments and explanations for each function and routine.