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edward62740 / i2ds Goto Github PK

Security sensor system with app control and cloud messaging capabilities.

C 84.05% Batchfile 0.01% Shell 0.01% C++ 3.53% Makefile 12.28% Assembly 0.05% HTML 0.01% CMake 0.01% Processing 0.05% Python 0.02%

freertos iot-sensors micrium security wifi sub-ghz firebase fcm-notifications efr32

i2ds's Introduction

Hi, I'm Edward

Currently studying computer engineering at NTU. You can find some of my projects here.

🔭 My projects generally involve:

Low-power IoT systems such as sensors, gateway devices
Wireless networks (i.e. Thread, BLE, Zigbee)
Embedded AI, compression techniques and hardware accelerators
Mixed signal and RF PCB design, 3D printed enclosures

🌱 My current research interests:

Hybrid vision transformers on edge devices
Spiking neural networks

👯 I’m looking to collaborate on interesting projects, do contact me! ([email protected])

Connect with me:

i2ds's People

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i2ds's Issues

PIRSN Software

Software for PIRSN

Debugger fails to connect to EFR32FG23 SWD during operation

Occurs due to EM2 debug not set. Disabled in production. Refer to emu initialization.

EMU->CTRL = (EMU->CTRL & ~_EMU_CTRL_EM2DBGEN_MASK)
              | (SL_DEVICE_INIT_EMU_EM2_DEBUG_ENABLE << _EMU_CTRL_EM2DBGEN_SHIFT);

Starve network join process to abort and connect debugger.

PCB Testing

Test pcb to ensure working per specs

CPN ESP32 Software

ESP32 software for CPN.

Sensor performance

Test sensor performance and adjust accordingly.

Pulse Counter

Pulse counter algo to reduce false positives for PIRSN.

ACSN Software

Software for ACSN

Power consumption

Objectives are to reduce power consumption for PIRSN, ACSN.

Base requirements:

1.5s poll interval
30s alive packet interval
30s*5 battery measurement
sensor element consumption

System Performance

CPN ESP32 Memory Leak in Firebase

Consumes memory over time and crashes the system.

Test RF

Test range and characterize RF matching.

CPN
ACSN
PIRSN

CPN EFR32 Software

EFR32 software for CPN.

GPIO Interrupt

Add gpio interrupt function for sensors. Map prs to gpio.

PIRSN
ACSN
does not work when debugger is disconnected

Battery Monitor

Add battery monitor function for sensors. Map prs to adc.

PIRSN
ACSN

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