This post presents the real sea trial of a low-cost echosounder system, including the design of the waterproof enclosure, the visualization app, and the results obtained under real conditions.
This post presents the implementation of a SPICE-based model for an ultrasonic transducer. The model is validated by comparing simulation results with empirical measurements from a custom-built transducer, as described in the previous post. Based on these results, the TVR of the transducer is estimated.
This article presents a setup for the characterization of piezoelectric transducers, measuring their frequency response using the designed custom sonar controller. The system will determine the most suitable frequencies for the transducer’s operation and the ultrasonic power it can transmit to water.
This article introduces the design of a high-precision echosounder system that includes the design of a 3D-printed transducer, the design of the controller, as well as the software needed to visualize the data
This post explains the design of an adjustable switching regulator driver for DV-S9 diving flashlight, supporting current up to 1 A and input voltage between 3V and 4.2V, along with low standby current. The driver achieves up to 85% efficiency at maximum current. This design is open source hardware with design documents stored on Github.
This post explain the design of a variable linear driver for the DV-S9 diving flashlight, the driver is capable of handling currents of up to 3 A the input voltage range is between 3V and 4.2V, and has low standby current. The driver achieves an efficiency of between 90% and 70% at maximum current. This design is open source hardware, with the design documents stored on Github.