Accident Detection SMS Alert System

@aliabidlodhi74

Hi, I can develop a complete proof-of-concept for your vehicle crash detection and SMS alert system. I have 11+ years of embedded systems and IoT experience, including sensor integration, GPS, GSM/LTE, and wireless devices. I would use an ESP32 or STM32 with a 3-axis accelerometer, GPS/GNSS module, GSM/LTE-M modem, buzzer, and suitable power management. The firmware will combine acceleration threshold, impact duration, and motion analysis to reduce false triggers from potholes and hard braking. After a validated crash, it will trigger the buzzer, obtain GPS coordinates, send an SMS, and queue/retry alerts when the network is unavailable. Deliverables: schematic, BOM, complete commented firmware, wiring diagram, and setup guide. Best regards. Muhammad Ali

@hamzazayyad

Hello, I saw your project for an embedded vehicle accident detector using an accelerometer, GPS and GSM/LTE-M SMS alerting. I loved the practical safety-focused workflow from crash detection to sending coordinates. What do you think if I build the POC around an STM32 with a 3-axis accelerometer, GNSS and cellular modem, using multi-stage crash validation to reduce false alarms? I’m an Electrical/Electronics Engineer with 15+ years of experience in STM32 firmware, embedded C, sensor integration, PCB design, automotive electronics and communication interfaces including UART, SPI, I2C and RS232/RS485. For the prototype, I would use an STM32 MCU with a suitable accelerometer, GNSS module and GSM/LTE-M modem. The firmware will continuously monitor acceleration and detect abnormal events using configurable thresholds, peak magnitude, duration and a short post-impact confirmation window rather than relying on a single spike. To minimise false positives from potholes and hard braking, I can implement filtering, multi-axis analysis, impact duration and acceleration-pattern validation before triggering the alarm. The buzzer will activate immediately after confirmation, while the GPS position is acquired and the SMS alert is sent. Failed transmissions can be queued and retried automatically when cellular service returns. Best regards, Hamza

@dannisacsl

I m 20+ year experience electronics engineer, mainly working on circuit design and embedded MCU firmware development. I m good at wireless / wired communication application like BLE, IoT, CAN, UART……..etc Also circuit design both schematic and PCB in KiCad, familiar developer for Nordic MCU, nRF51, nRF52, nrf53, nRF91, also experienced in common MCU like STM32, microchip, 89C51........etc. I have a similar project before, a smart watch with crash detect, GNSS tracking, LTE-M connected alert, more information can share during chatting. My working base in Hong Kong, smooth in communication and good environment to sourcing from China I have confidence to finish your job in well and wish have chance to discuss with you

@caodx

Hello, I have experience with embedded systems, GPS/GSM tracking devices, sensor-based monitoring, and IoT safety applications. For this project, I would recommend an ESP32-S3 platform combined with a high-speed accelerometer and a cellular modem with GPS capability such as the SIM7600 series. The proof of concept would include the complete schematic, BOM, well-documented firmware, SMS alert functionality, GPS location acquisition, buzzer activation, event logging, and a setup guide for bench testing and future PCB integration. To minimize false positives, I would not rely on a simple acceleration threshold. Instead, I would implement a multi-stage crash detection algorithm that evaluates impact magnitude, duration, motion characteristics, and post-impact behavior before triggering an emergency alert. My estimated budget for the complete proof-of-concept solution is in the range of 600–800 USD, depending on the final hardware platform and testing requirements. I would be happy to discuss the details and recommend the most practical architecture for a reliable demonstration system.

@shenglin0617

Hi, I've built vehicle telematics and IoT safety devices before, including accelerometer crash detection with GSM alerting. Hardware: ESP32 or STM32L4. LIS3DH accelerometer. NEO-M8N GPS. SIM7600 for GSM or BG96 for LTE-M. Buzzer via transistor. 3.7V LiPo with charger. Crash algorithm: Sample at 200Hz. Watch magnitude for threshold breach, 2.5g to 4g. One spike is not enough. Real crash has sharp rise then decay, sustained high g for 50ms+. Potholes and braking are short spikes. So add second stage: after threshold, check GPS position stops changing or speed drops to zero. That confirms crash vs rough road. Debounce and cooldown prevent repeat alerts. False positives: Bandpass filter ignores vibration. Adapt baseline g for road tilt. Require high g spike plus sudden stop. Potholes will not stop the vehicle. Add cancel button. Driver presses within 10 seconds to stop SMS. That kills most false alarms. Alert routine: Buzzer immediately. Fetch GPS fix, wait up to 30s. Format SMS with lat/long and Maps link. Send via GSM/LTE-M. No signal, queue in flash and retry every 30s. Deliverables: Schematic, component list, commented source, bench guide. Guide shows how to simulate crash, test GPS, verify SMS. Notes for custom PCB later. Portfolio available on request. Three questions: - ESP32 or STM32? - 2G or LTE-M in your region? - Cancel button or automatic? Send answers and I'll confirm fixed price with milestones. Ready to start. Regards, ShengLin Gu.

@hexabitzprojects

Hi, This project is a strong match for my **16 years of embedded/IoT R&D experience** in vehicle telematics, GPS, GSM/LTE, sensor acquisition and safety alert systems. I have completed **AIS-140 GPS Tracker, automotive telematics, GPS data logging and cellular IoT projects** directly relevant to this application. For the prototype, I can use **ESP32/STM32 + accelerometer + GPS/GNSS + GSM/4G modem + buzzer**. The crash algorithm will use more than a simple threshold, combining impact magnitude, duration/time window and post-impact motion to reduce false alerts from **hard braking, potholes and rough driving**. After confirmed impact, the system will trigger the buzzer, obtain the latest valid GPS coordinates and send an SMS to the predefined emergency contact. If cellular service is unavailable, the alert will be stored and automatically retried after network recovery. I will provide the **schematic, BOM, complete commented firmware/source code and replication guide**, with a modular design suitable for migration to a custom PCB. My previous **AIS-140 tracker, automotive telematics, GPS and cellular IoT projects** provide directly relevant hands-on experience. Best regards, **Subhash Suman** Automotive IoT | GPS | GSM/4G | Embedded Firmware **16 Years R&D Experience**

@murtesa

I can build this as a complete working proof of concept, including the schematic, component list, firmware, and bench setup guide. I’d recommend an ESP32 with a reliable 3-axis accelerometer, GPS module, and GSM/LTE-M modem for a practical and expandable prototype. For crash detection, I would avoid relying on one acceleration threshold. The firmware will filter sensor noise and analyze acceleration magnitude, impact duration, rate of change, and the surrounding time window to distinguish genuine collisions from potholes, vibration, and hard braking. Once a crash is confirmed, the buzzer activates, GPS coordinates are obtained, and an SMS is sent to the saved emergency contact. I’ll also implement message queuing and automatic retry when cellular service is unavailable, along with watchdog handling, diagnostics, and configurable detection thresholds for testing. You’ll receive well-commented source code, wiring documentation, and guidance for moving the prototype to a custom PCB. I have strong software and IoT development experience and can handle the firmware, hardware integration, communications, and debugging as one project. I’d be happy to build and test the prototype with you.

@dilochanak

Hi, I can definitely help you build this crash detection prototype. An ESP32 is the perfect fit for the brain, paired with an MPU6050 accelerometer, a GPS module, and a standard GSM modem. The trickiest part here is avoiding false alarms from potholes and hard braking. I'll write the code to check the G-force spikes over a specific time window, so it only triggers on actual impacts. When a crash is detected, it will immediately sound the buzzer, grab the coordinates, and fire off the SMS. I'll also add a retry loop to hold and resend the message if the network drops. Let me know if you want to discuss the details. Thanks, Hasanka

@ASSAMWEB

Greetings, I have reviewed your project description and recently worked on a similar project: ”Vehicle Safety ”. I believe I can help you deliver this successfully. Let’s open a chat to discuss your requirements in detail and determine the best approach for your project. Regards

@Schinqy

Hello, I can build this as a complete bench-ready proof of concept, including the schematic, BOM, firmware, crash detection, GPS, SMS alerting, retry handling and documentation for a future PCB. I’d use an ESP32 with a 3-axis accelerometer, GPS module and GSM/LTE modem. Rather than relying on one acceleration threshold, I’d analyse acceleration magnitude, peak level, event duration and recovery behaviour over a short window. This helps distinguish collisions from potholes and hard braking. Thresholds would be configurable for bench testing and tuning. The workflow would be: accelerometer → collision confirmation → buzzer → GPS fix → SMS with coordinates. If GPS or cellular service is unavailable, the alert would be queued and retried automatically, with protection against duplicate alerts. I have hands-on experience with embedded vehicle electronics and telematics using ESP32, A7670E/SIM808-class cellular modems, GPS/GNSS and microcontrollers. I also worked on the XCELA vehicle speed-governor and tracking system deployed in Zimbabwe on over 10,000 vehicles. This experience is directly relevant to building reliable vehicle electronics rather than just demonstrating individual modules. I can deliver the working prototype, commented source code, wiring, testing procedure and PCB transition guidance.

@paulpham93

Hi, I build embedded crash-detection prototypes using STM32/Arduino with GPS and GSM/SMS alerts. My Upwork profile (Paul.P) has earned over $300,000, reflecting trusted senior-level work. Our team at DevBrix delivers reliable firmware and hardware products. You can review past work at https://devbrix.com. Best regards, Best regards, Paul.

@OWAIS14325

With deep proficiency and a results-oriented mindset in Arduino, Embedded Systems, Firmware Development, Microcontroller, STM32 chip specifically, I am confident I am an ideal fit for your accident detection SMS alert system. I propose leveraging my expertise in multi-agent AI systems closely aligned with "road situational awareness" to minimize false alarms resulting from aggressive driving behavior or natural road conditions. My focus on meaningful prompts engineering enhances model behavior for domain-specific needs, here disaster detection can not only be made smarter but more possible.

@abhishekb703

I can develop a complete proof-of-concept for your accident detection and emergency SMS system, including the schematic, BOM, firmware, testing guide, and PCB migration recommendations. I recommend using an ESP32 + accelerometer + GPS + GSM/LTE-M modem + buzzer. The firmware will continuously monitor acceleration, detect abnormal impact patterns, and use a confirmation algorithm rather than a simple threshold to reduce false triggers from potholes, harsh braking, and rough driving. After a confirmed accident, the system will immediately activate the buzzer, obtain the latest GPS coordinates, and send an SMS with a Google Maps location link to the predefined emergency contact. If the cellular network is unavailable, the alert will be stored and automatically retried when connectivity returns. I will provide well-commented, modular firmware, complete wiring/schematic, component list, calibration procedure, and bench-testing instructions. I have experience with embedded systems, IoT, GPS, UART peripherals, and cellular communication and can build this with reliability and future PCB integration in mind.

@aakashlonewolf27

I am Aakash, an embedded systems and PCB design engineer as well as a student actively working on multiple IoT and robotics projects. I specialize in building reliable hardware prototypes with accelerometer‑based sensing, GPS integration, and GSM/LTE communication. For your accident detection SMS alert system, I will deliver a complete proof of concept including schematic, BOM, well‑commented source code (Arduino/ESP32/STM32), and a step‑by‑step guide. My focus will be on designing a robust crash‑detection algorithm that minimizes false positives from potholes or sharp braking, ensuring accurate alerts with GPS coordinates sent instantly to emergency contacts. With prior experience in IoT safety devices and SMS‑based alerting, I can bring this life‑saving idea from concept to a working demonstration efficiently and professionally.

@zonyz8

Hello, I can build the accident-detection prototype and firmware around your chosen MCU, whether Arduino or STM32. I will implement accelerometer sampling and filtering, impact-spike classification with debounce and confirmation logic to reduce false alerts from rough driving, buzzer output, GPS coordinate acquisition, and GSM/LTE SMS delivery to a pre-saved emergency contact. I will structure the firmware as reusable modules with clear thresholds, serial diagnostics, and a safe alert state machine. I can deliver the firmware, wiring and pin configuration, setup instructions, and a practical test procedure. I will validate normal driving versus impact cases and tune the thresholds on the provided hardware. I can start immediately and will first confirm the board, accelerometer, GPS/GSM modules, power constraints, and expected SMS format.

@Utkarshlancer123

I have already completed this project and can share a demonstration video soon. I also have all the relevant documentation available. My role in this project is focused on prototype wiring, hardware integration, and firmware development, rather than PCB design or manufacturing. I can help you build and test the prototype using components such as: Arduino UNO SIM800C GSM module ADXL accelerometer Buzzer SOS button Reset button GPS module Other components required for the prototype I can assist with the circuit connections, component integration, Arduino programming, and testing to achieve the required functionality. I would be happy to discuss your requirements and help bring this accident-detection and emergency-alert system to life.

@MuhammadQdry

Hello, I can build this as a complete bench-testable proof of concept using an ESP32, accelerometer, GPS module, cellular modem, and buzzer. The crash detection will not rely on a single acceleration threshold. I will analyse acceleration magnitude over a short time window, using peak level, event duration, hysteresis, and a cooldown/state machine to reduce false triggers from hard braking, potholes, and normal vibration. After a confirmed event, the firmware will: • Trigger the onboard buzzer • Obtain the latest valid GPS coordinates • Send an emergency SMS with latitude/longitude • Queue and retry the alert if cellular service is temporarily unavailable Deliverables will include: • Complete schematic • BOM with specific component part numbers • Well-commented ESP32 firmware • Crash-detection algorithm with adjustable parameters • GPS and GSM/LTE modem integration • Network-loss/retry handling • Bench setup and replication guide • Notes for future custom-PCB migration I have not previously deployed a commercial vehicle-telematics system, so I would not claim that experience. However, I have a solid electronics and circuit-design background and can handle the hardware, firmware, and signal-processing aspects of the prototype. I will keep the design modular, testable, and straightforward to modify as the crash-detection thresholds are refined.

@aarushcb

Hello, I can develop your accident detection and emergency alert prototype using an ESP32, IMU, GPS and GSM/LTE modem. I have hands-on experience with ESP32/Arduino, sensors, embedded systems, IoT and vehicle-related projects. The system will detect abnormal acceleration patterns rather than relying on a single threshold, helping reduce false alerts from hard braking, potholes and vibrations. After a suspected crash, it will activate a buzzer and provide a short cancellation period. If not cancelled, GPS coordinates will be obtained and sent to the emergency contact via SMS. Deliverables: • Circuit schematic + BOM • ESP32 firmware • Crash detection & calibration logic • GPS/GSM integration • Buzzer/status indication • Network retry handling • Testing and setup documentation I have not previously deployed this exact crash-alert product, but my embedded and IoT experience is directly relevant. I will also treat this as a prototype, not a certified automotive safety device.

@mohamedab374

Hi, I'm Mohammed, a Mechatronics Engineering student with hands-on experience in Arduino, ESP32, sensor integration, and embedded C++ programming. My automotive engineering background makes this project especially relevant to me. Hardware stack I recommend: ESP32 as main controller (WiFi + processing power) MPU-6050 accelerometer for crash detection NEO-6M GPS module for coordinates SIM800L GSM module for SMS alerts Buzzer for local alert Crash detection algorithm: I will implement threshold-based detection with a time-window filter to eliminate false positives from potholes or sharp braking. The algorithm monitors acceleration magnitude across all 3 axes — a real crash produces a distinct spike pattern different from normal driving events. What I will deliver: ✅ Complete Arduino/ESP32 firmware with crash detection algorithm ✅ GPS coordinate fetching and SMS alert via GSM ✅ Queue and retry logic when cellular network is down ✅ Buzzer activation on crash detection ✅ Complete schematic and wiring diagram ✅ BOM with component part numbers ✅ Well-commented source code ✅ Setup guide for bench replication Ready to start immediately. Mohammed