Sonar Depth Meter
Budget: $750 – $1,500 USD
Development of a User-Friendly Sonar Depth Meter
Project Description
I am looking for an experienced electronics engineer/programmer to design and implement a sonar depth meter based on ultrasonic technology. The key requirement is the simplicity of operation on a "plug and play" basis (similar to the JSN-SR04T sensor) - without the need for complicated calibration by the end user.
Scope of Work
Electronic Circuit Design, including:
Ultrasonic signal generator
Transmitter driver for transducer control
Receiver path with appropriate filter and signal detection circuit
Control unit based on a microcontroller (STM32 suggested, but not mandatory)
Temperature sensor for automatic sound velocity compensation
User interface with LCD display and rotary encoder
Factory pre-calibration of the system
PCB Design, Production and Testing
Electrical schematic in preferred format
PCB layout design
Component assembly
Microcontroller Programming, including:
Depth measurement algorithm with automatic temperature compensation
Simple user menu without the need for technical configuration
Automatic correction and filtering of measurements for greater stability
Auto-calibration system at startup
Waterproof Enclosure Development:
Design and production of an enclosure with min. IP67 rating
Installation of the piezoelectric transducer with waterproof sealing
Technical Documentation:
Detailed schematic diagram
Bill of Materials (BOM)
Simple user manual (plug and play)
Source code with comments
Technical Specifications
Operating principle: plug and play
Measurement range: 0.5 - 50 meters depth
Measurement accuracy: ±10 cm or better
Automatic temperature compensation in the range of 0-30°C
Waterproof rating: minimum IP67
Power supply: constant 16V (power supply circuit is already designed)
User interface: 16×2 LCD display with I2C interface, rotary encoder with button
No need for manual calibration by the user
Notes on the Piezoelectric Transducer
The piezoelectric transducer can be:
200 kHz frequency
Dual frequency 200/83 kHz
Other frequency as recommended by the freelancer
The choice of transducer and its driving technology is left to the discretion of the developer, depending on their experience and ability to achieve the best measurement results.
Required Skills and Experience
Experience in designing analog and digital electronic circuits
Experience in microcontroller programming
Experience in PCB design
Ability to create intuitive user interfaces
Knowledge of working principles with piezoelectric transducers and ultrasound
Experience in creating waterproof devices
Experience in designing "plug and play" devices
Expected Results
Complete sonar depth meter project, including:
Full electrical schematic
PCB design ready for production
Working prototype meeting specifications
Software providing "plug and play" operation
Complete project documentation
Testing of the device in real conditions
Demonstration of operation and usage instruction
Budget
Project budget: [negotiable, depending on experience and scope of work]
Interested parties please send a portfolio with examples of similar "plug and play" electronic projects and an initial project estimate.
Project Description
I am looking for an experienced electronics engineer/programmer to design and implement a sonar depth meter based on ultrasonic technology. The key requirement is the simplicity of operation on a "plug and play" basis (similar to the JSN-SR04T sensor) - without the need for complicated calibration by the end user.
Scope of Work
Electronic Circuit Design, including:
Ultrasonic signal generator
Transmitter driver for transducer control
Receiver path with appropriate filter and signal detection circuit
Control unit based on a microcontroller (STM32 suggested, but not mandatory)
Temperature sensor for automatic sound velocity compensation
User interface with LCD display and rotary encoder
Factory pre-calibration of the system
PCB Design, Production and Testing
Electrical schematic in preferred format
PCB layout design
Component assembly
Microcontroller Programming, including:
Depth measurement algorithm with automatic temperature compensation
Simple user menu without the need for technical configuration
Automatic correction and filtering of measurements for greater stability
Auto-calibration system at startup
Waterproof Enclosure Development:
Design and production of an enclosure with min. IP67 rating
Installation of the piezoelectric transducer with waterproof sealing
Technical Documentation:
Detailed schematic diagram
Bill of Materials (BOM)
Simple user manual (plug and play)
Source code with comments
Technical Specifications
Operating principle: plug and play
Measurement range: 0.5 - 50 meters depth
Measurement accuracy: ±10 cm or better
Automatic temperature compensation in the range of 0-30°C
Waterproof rating: minimum IP67
Power supply: constant 16V (power supply circuit is already designed)
User interface: 16×2 LCD display with I2C interface, rotary encoder with button
No need for manual calibration by the user
Notes on the Piezoelectric Transducer
The piezoelectric transducer can be:
200 kHz frequency
Dual frequency 200/83 kHz
Other frequency as recommended by the freelancer
The choice of transducer and its driving technology is left to the discretion of the developer, depending on their experience and ability to achieve the best measurement results.
Required Skills and Experience
Experience in designing analog and digital electronic circuits
Experience in microcontroller programming
Experience in PCB design
Ability to create intuitive user interfaces
Knowledge of working principles with piezoelectric transducers and ultrasound
Experience in creating waterproof devices
Experience in designing "plug and play" devices
Expected Results
Complete sonar depth meter project, including:
Full electrical schematic
PCB design ready for production
Working prototype meeting specifications
Software providing "plug and play" operation
Complete project documentation
Testing of the device in real conditions
Demonstration of operation and usage instruction
Budget
Project budget: [negotiable, depending on experience and scope of work]
Interested parties please send a portfolio with examples of similar "plug and play" electronic projects and an initial project estimate.