Our plan for Third Space Hack Club - Week 2!
A locked box that refuses to open until brought to a specific geographic coordinate that can be determined through various puzzles.
ARG GitHub here: https://github.com/katfishkatfishing/Eye-of-God
An arg inspired puzzle, alien-y sci-fi themed reverse geocache box, meaning the user has to solve a series of puzzles to obtain the coordinates required for the box. Then guy has to bring it there and (hopefully) the box will open.
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GPS Tracking
- GPS Receiver Module: An internal GPS receiver (NEO-6M) reads satellite NMEA signals to calculate latitude, longitude and altitude.
- Geofencing & Distance logic: The internal microcontroller runs algorithms to calculate the distance between the box's current coordinates and the pre-programmed target coordinates.
- Proximity Threshold: The box considers the destination "reached" once it is within a designated radius.
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Locking Mechanism
- Electronic Lock: A motorized latch-typically driven by a micro servo motor that secures the lid mechanism.
- No External Keyholes: The exterior lacks traditional physical keyholes or manual padlocks (duh) to prevent brute-force opening without solving the puzzles.
- Fail-Safe: In case battery dies or satellite signals drop permanently.
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ARG Puzzle - Clues that lead to more clues that lead to the final destination — the "One Peace"
WIP
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Microcontroller & Wireless Modules
- ESP32-S3-WROOM (Main MCU with Wi-fi & Bluetooth)
- NEO-6M GPS Receiver Module
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Power Management & Charging
- TPS63020DSJR (High-Efficiency Buck-Boost DC-DC Converter)
- AMS1117-3.3 (3.3V Low Dropout Linear Voltage Regulator - SOT-223)
- MCP73871-2CC (LiPo / Li-Ion Battery Charge & System Power Path Management IC)
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Display, Interface & Actuator
- HS280S010B (2.8' SPI TFT LCD Screen)
- Motor_Servo (3-Pin Header for Servo Motor / Solenoid control)
- SW_Push (SMD Push Button Switch - B3U-1000P)
- LEDs (0603 SMD Status LEDs) x3
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Connectors
- USB-C Receptacle (16-Pin USB 2.0 Port for power/flashing)
- U.FL Antenna Connector (IPEX/U.FL coaxial connector for GPS antenna)
- Conn_01x02 (2-Pin 2.54mm Header for battery connection)
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Inductors
- 1µH Power Inductor (SMD ANR4030)
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Capacitors
- 470µF Tantalum Capacitor (EIA-7343 / Case E)
- 22µF Ceramic Capacitors (0603 SMD) x5
- 10µF Ceramic Capacitors (0603 SMOD) x3
- 1µF Ceramic Capacitor (0603 SMD)
- 0.1µF (100nF) Ceramic Capacitors (0402 SMD) x2
- 100nF Ceramic Capacitor (0402 SMD)
- 10pF Ceramic Capacitor (0402 SMD)
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Resistors
- 1.6MΩ Resistor (0603 SMD)
- 1MΩ Resistor (0603 SMD)
- 180kΩ Resistor (0603 SMD)
- 39kΩ Resistor (0603 SMD)
- 10kΩ Resistors (0603 SMD) x2
- 5.1kΩ Resistors (0603 SMD - USB-C CC Pull-downs) x2
- 2kΩ Resistor (0603 SMD)
- 470Ω Resistors (0402 SMD - Current-limiting for LEDs) x3
- 0Ω Jumper Resistor (0402 SMD)
| Reference | Qty | Value | DNP | Exclude from BOM | Exclude from Board | Footprint | Datasheet |
|---|---|---|---|---|---|---|---|
| C1 | 1 | 470uF | Capacitor_Tantalum_SMD:CP_EIA-7343-43_Kemet-X_HandSolder | ||||
| C3,C9,C10 | 3 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | ||||
| C4,C7 | 2 | 0.1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | ||||
| C5,C12,C13,C14,C15 | 5 | 22uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | ||||
| C6 | 1 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | ||||
| C8 | 1 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | ||||
| C11 | 1 | 10pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | ||||
| D3,D4,D5 | 3 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | ||||
| J1 | 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4085 | https://www.usb.org/sites/default/files/documents/usb_type-c.zip | |||
| J2 | 1 | U.FL | U.FL_Molex_MCRF_73412-0110_Vertical:U.FL_Molex_MCRF_73412-0110_Vertical | https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2208151830_BAT-WIRELESS-BWU-FL-IPEX1_C5137195.pdf | |||
| J3 | 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | ||||
| L1 | 1 | 1uH | Inductor_SMD:L_APV_ANR4030 | ||||
| LCD1 | 1 | HS280S010B | lcsc_shared_footprints:C2939938_LCD-TH_HS280S010B | https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2401291705_HS-HS280S010B_C2939938.pdf | |||
| M1 | 1 | Motor_Servo | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | http://forums.parallax.com/uploads/attachments/46831/74481.png | |||
| R6,R7,R8 | 3 | 470R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | ||||
| R9,R17 | 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | ||||
| R10 | 1 | 2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | ||||
| R13,R14 | 2 | 5.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | ||||
| R18 | 1 | 0R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | ||||
| R19 | 1 | 1.6M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | ||||
| R20 | 1 | 39k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | ||||
| R21 | 1 | 1M | Resistor_SMD:R_0603_1608Metric | ||||
| R22 | 1 | 180k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | ||||
| SW4 | 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | ||||
| U1 | 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | http://www.advanced-monolithic.com/pdf/ds1117.pdf | |||
| U2 | 1 | NEO-6M-0-001_C32413118 | lcsc_shared_footprints:C32413118_SMD | None | |||
| U3 | 1 | TPS63020DSJR | lcsc_shared_footprints:C15483_VSON-14_L4_0-W3_0-P0_50-BL-EP_TI_DSJ | https://www.lcsc.com/datasheet/lcsc_datasheet_1809200040_Texas-Instruments-TPS63020DSJR_C15483.pdf | |||
| U4 | 1 | MCP73871-2CC | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | http://www.mouser.com/ds/2/268/22090a-52174.pdf | |||
| U5 | 1 | ESP32-S31-WROOM-3_C9900281993 | lcsc_shared_footprints:C9900281993_COMM-SMD_99P-L33_0-W26_0-P0_85_ESP32-S31-MINI-1-H16R16V | None |
