InnerOracle is an interactive, tangible interface that translates physiological stress into mystical guidance. Unlike traditional fortune-telling machines that rely on random chance, InnerOracle utilizes Galvanic Skin Response (GSR) to measure the user's emotional arousal and provides a personalized Tarot reading through a mechanical dial and an OLED display.
The system is built with a Dual-Node Architecture using two Seeed Studio XIAO ESP32-C3 microcontrollers communicating via the ESP-NOW wireless protocol.
- Microcontroller: Seeed Studio XIAO ESP32-C3
- Sensor: Grove GSR Sensor with custom Copper Tape Electrodes
- Logic: Implements an Adaptive Baseline Tracking algorithm to detect emotional triggers beyond skin resistance fluctuations.
- Feedback: Provides immediate visual feedback via NeoPixel LED (Rainbow effect).
- Microcontroller: Seeed Studio XIAO ESP32-C3
- Actuator: X27.168 Stepper Motor (Precision Gauge Motor)
- Display: 0.96" I2C SSD1306 OLED
- Logic: Receives real-time stress data and controls the physical needle with custom homing and calibration sequences.
[User's Hand] -> [GSR Sensor] -> [Sensing XIAO] --(ESP-NOW Wireless)--> [Display XIAO] -> [X27 Motor & OLED]
- Custom PCB: Designed and soldered at GIX Prototyping Labs.
- Enclosure: 2-part 3D printed housing ("The Orb" and "The Dial Box").
- Power: Powered by 3.7V 1000mAh LiPo batteries, optimized for up to 150+ hours of typical usage.
/Sensing_Node: Source code for GSR data processing and ESP-NOW transmission./Display_Node: Source code for motor control, OLED UI, and data reception.
- Total Project Cost: $66.95
- Key Components: GSR Sensor ($32.99), 1000mAh Batteries ($16.98), XIAO ESP32C3 ($10.99).