Circuit Documentation
Summary of the Circuit
This circuit integrates an ESP32 Wroom Dev Kit microcontroller with a SparkFun OpenLog data logger and a GPS NEO 6M module. The ESP32 serves as the central processing unit, interfacing with the GPS module to receive location data and with the OpenLog to log this data. The circuit is designed to be powered by a 3.3V supply, which is distributed to all components. Communication between the ESP32 and the other modules is achieved through serial connections.
Component List
ESP 32 Wroom Dev Kit
- Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities, suitable for a wide range of IoT applications.
- 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
SparkFun OpenLog
- Description: A simple to use data logger that records serial data to a microSD card.
- Pins: DTR, RXI, TXO, VCC, GND, RST, SCK, MOSI, MISO
GPS NEO 6M
- Description: A compact GPS module capable of providing accurate location data.
- Pins: VCC, RX, TX, GND
Wiring Details
ESP 32 Wroom Dev Kit
- 3V3: Connected to VCC of SparkFun OpenLog and GPS NEO 6M to provide power.
- GND: Common ground with SparkFun OpenLog and GPS NEO 6M.
- GPIO 19: Connected to TXO of SparkFun OpenLog for serial communication.
- GPIO 18: Connected to RXI of SparkFun OpenLog for serial communication.
- GPIO 17: Connected to TX of GPS NEO 6M for serial communication.
- GPIO 16: Connected to RX of GPS NEO 6M for serial communication.
SparkFun OpenLog
- VCC: Powered by 3.3V from ESP 32 Wroom Dev Kit.
- GND: Common ground with ESP 32 Wroom Dev Kit and GPS NEO 6M.
- TXO: Sends serial data to GPIO 19 of ESP 32 Wroom Dev Kit.
- RXI: Receives serial data from GPIO 18 of ESP 32 Wroom Dev Kit.
GPS NEO 6M
- VCC: Powered by 3.3V from ESP 32 Wroom Dev Kit.
- GND: Common ground with ESP 32 Wroom Dev Kit and SparkFun OpenLog.
- TX: Sends serial data to GPIO 17 of ESP 32 Wroom Dev Kit.
- RX: Receives serial data from GPIO 16 of ESP 32 Wroom Dev Kit.
Documented Code
Microcontroller: ESP 32 Wroom Dev Kit
File: sketch.ino
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
File: documentation.txt
(No additional documentation provided for this file.)
This concludes the documentation for the given circuit. The circuit is designed for serial communication between the ESP32 microcontroller, the SparkFun OpenLog, and the GPS NEO 6M module, with power distribution and common grounding established across the components. The provided code is a template for further development, where setup and loop functions will be populated with instructions to initialize the serial communications and handle data logging and GPS data processing.