Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ILI9341 TFT display, a GPS NEO 6M module, a 4xAA battery pack, a voltage regulator (LD1117VXX), electrolytic capacitors, and an ESP32 microcontroller. The circuit is designed to interface the TFT display and GPS module with the ESP32, powered by a 4xAA battery pack through a voltage regulator.

Component List

1. ILI9341 TFT Display

   • Pins: SD_CS, SD_MOSI, SD_MISO, SD_SCK, VCC, GND, CS, RESET, D/C, SD(MOSI), SCK, LED, SDO(MISO), T_CLK, T_CS, T_DIN, T_OUT, T_IRQ
   • Description: A 2.8-inch TFT display with touch functionality.

2. GPS NEO 6M

   • Pins: VCC, RX, TX, GND
   • Description: A GPS module for receiving location data.

3. 4xAA Battery Pack

   • Pins: POS, NEG
   • Description: A battery pack holding four AA batteries to power the circuit.

4. Voltage Regulator (LD1117VXX)

   • Pins: GND, OUT, IN
   • Description: A voltage regulator to step down the voltage from the battery pack to a stable 3.3V.

5. Electrolytic Capacitor (10µF)

   • Pins: -, +
   • Description: Capacitors used for power supply smoothing.
   • Capacitance: 10µF

6. ESP32 (30 pin)

   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3
   • Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities.

Wiring Details

ILI9341 TFT Display

• SD_MOSI, T_DIN, SD(MOSI) connected to ESP32 D23
• T_CS connected to ESP32 D21
• T_OUT, SD_MISO connected to ESP32 D19
• SCK, T_CLK, SD_SCK connected to ESP32 D18
• SD_CS connected to ESP32 D5
• RESET connected to ESP32 D4
• D/C connected to ESP32 D2
• CS connected to ESP32 D15
• GND connected to common ground
• VCC, LED connected to 3.3V from the voltage regulator

GPS NEO 6M

• RX connected to ESP32 TX2
• TX connected to ESP32 RX2
• GND connected to common ground
• VCC connected to 3.3V from the voltage regulator

4xAA Battery Pack

• POS connected to Voltage Regulator IN and Electrolytic Capacitor +
• NEG connected to common ground

Voltage Regulator (LD1117VXX)

• IN connected to 4xAA Battery Pack POS and Electrolytic Capacitor +
• OUT connected to Electrolytic Capacitor +, GPS NEO 6M VCC, ILI9341 TFT Display VCC, ILI9341 TFT Display LED, and ESP32 3V3
• GND connected to common ground

Electrolytic Capacitors

• First Capacitor (-) connected to common ground
• First Capacitor (+) connected to Voltage Regulator IN and 4xAA Battery Pack POS
• Second Capacitor (-) connected to common ground
• Second Capacitor (+) connected to Voltage Regulator OUT

ESP32 (30 pin)

• D23 connected to ILI9341 TFT Display SD_MOSI, T_DIN, SD(MOSI)
• D21 connected to ILI9341 TFT Display T_CS
• D19 connected to ILI9341 TFT Display T_OUT, SD_MISO
• D18 connected to ILI9341 TFT Display SCK, T_CLK, SD_SCK
• D5 connected to ILI9341 TFT Display SD_CS
• TX2 connected to GPS NEO 6M RX
• RX2 connected to GPS NEO 6M TX
• D4 connected to ILI9341 TFT Display RESET
• D2 connected to ILI9341 TFT Display D/C
• D15 connected to ILI9341 TFT Display CS
• GND connected to common ground
• 3V3 connected to Voltage Regulator OUT

Code

No code provided for this circuit.

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This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code section. Each component is described, and the wiring details ensure proper connections for the circuit to function as intended.