During the dry season we often get electrocuted by metal objects, especially door handles. This is due to the charged static electricity in the human body. Any object can be charged, and often objects have electrical potentials of several thousand volts or more. Static electricity often causes malfunction or damage to electronic equipment. I've always wanted to know how much static electricity is carried in an object or human body, so I made a surface potentiometer to measure the potential of a charged object.
Single-Pair-Ethernet technology (SPE, Single-Pair-Ethernet) describes the transmission of Ethernet through only a pair of copper cores. In addition to transmitting data through Ethernet, it can also simultaneously provide power to terminal devices through PoDL (power supply over data lines).
The biggest feature of this open source oscilloscope is its strong waveform rendering (afterglow/fluorescence) effect. At the beginning, the author used Raspberry Pi Module 3, which can render 22,000 frames per second. In the later stage, NVIDIA Jetson is used, which can render 130,000 frames. frame. ZYNQ's FPGA is responsible for triggering and data acquisition, and A9 is responsible for transmitting data to the Raspberry Pi. Then the Raspberry Pi does the display processing. The ADC uses 1Gsps HMCAD1511.
The Sonoma (MAXREFDES14#) subsystem reference design performs accurate AC energy measurement while utilizing a unique, low-cost galvanic isolation architecture. The Sonoma meets the high-accuracy and low-cost needs of energy-measurement applications. This small form-factor design is available for purchase. Hardware, firmware design files, and lab measurements provide complete system information for rapid prototyping and development.
Open source closed-loop stepper motor controller (schematic diagram + source code), using PID algorithm control, AS5047 magnetic angle detection sensor, efficient anti-loss of steps, quick learning of PID algorithm, and mastery of microcontroller system development.
After the user manually solders a PCB board, this board becomes the reflow controller, and then this board can be used to control other boards for reflow soldering, because this board has been specially designed to open a heating layer.
The RSL10 module is plugged into the self-made optocoupler isolation circuit board, and the entire module is connected in series with the modified target instrument (4-20mA two-wire passive digital display meter) and then connected to the 4- In the 20mA current loop, when the actual working zero current is 4mA, the target instrument displays 4.000mA in the current mode; the overall voltage drop of the circuit board of the work is 2.513V; the changed range or unit is sent to the RSL10 on the circuit of the work through the mobile APP Setting command, the target instrument (currently its own voltage drops by more than 1V) will be changed by Bluetooth remote control to change the setting state, such as switching to different ranges or displaying different measured physical quantity units, etc.
Plankton help remediate 30-50% of the world's carbon dioxide and provide the foundation for the global food chain, making up the world's largest daily movement of biomass as it travels across the ocean. The shapes, colors, and movements of these billions of creatures are as vast as the oceans that sustain them. Understanding plankton is crucial to understanding the world around us and our impact on it.
One obstacle to this type of research is the sheer size of the area to be explored, as well as limited resources for research fleets and specialized equipment. By developing a method to scale up high-quality visual exploration and documentation, we can greatly increase our understanding of the complex web of life around us, and how we in turn influence it.
It can be powered via a USB port and has an LCD interface for standalone use without a PC. ERASynth Micro uses a dual-loop PLL architecture to provide fast frequency switching and fine tuning resolution. Frequency, amplitude and pulse modulation capabilities are also available.
Based on NXPThe Ethernet Video Development Kit for the MPC5604E MCU is suitable for next-generation automotive and general market camera applications.
The MAXREFDES70# reference design is a high-precision, low-cost, low-power consumption, battery-powered heat/flow meter featuring the MAX35101 ultrasonic time-to-digital (TDC) converter with analog front-end (AFE). The reference design provides a high-performance flow/heat meter design platform that works as a foundation for many specific meter applications. The system utilizes the ultrasonic time-of-flight (TOF) measurement principle. A 3.6V, 4.0Ah, size A lithium -thionyl chloride battery powers the system and can last up to 20 years for typical use. Test results, hardware files, and firmware source code provide complete documentation for the design. The complete meter is also available for purchase.
easySwitchBox does one simple thing - it sends an on/off signal to any relay, actuator or other item. It can be used to trigger any event wirelessly and over long distances (even up to several kilometers using LoRa®). Programming is easy using the Arduino IDE, and communication is protected by a certified chip. easySwitchBox not only makes your projects more efficient, but also looks more professional.
MPC5777C-DEVB with MPC5777C MCU, MC33FS6520LAE SBC and TJA1100 and TJA1145T/FD transceivers for Engine Control and BMS
This video records the entire process of the author and his team building a low-cost ornithopter. The video explains in detail the mechanical structure design, power transmission, wing flapping angle control, electronic system design and selection of the ornithopter. At the same time, the author has open sourced all design-related schematics, PCB, source code and other materials for reference by interested enthusiasts.
Intel has open sourced a car with a total parts price of less than 50 US dollars, which costs about 350 yuan in total. With a mobile phone, it becomes a self-driving car.
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