Pixelblaze makes writing new LED patterns fast and fun using its real-time web-based editor and highly optimized expression engine. You can store a hundred patterns and write new ones by entering mathematical expressions or code that update in real time as you type. Pixelblaze is designed to make it easier to program LED patterns and intuitively understand how code and math affect those patterns.
Want to add lots of LEDs to your Arduino project? HUB75 RGB panels are a great way to do this as they are much cheaper than addressable Neopixel/WS2812 LEDs (typically 10% of the cost per LED). They are also available in a range of pixel densities (from 2mm to 10mm pitch) to better suit your project needs. However, using a microcontroller to display high-quality graphics on a HUB75 panel is complicated because the panel requires precise timing and constant refreshing of pixel data. That's where Teensy 4's SmartLED Shield comes in.
The Micro WS2812 2020 RGB LED Matrix is a micro 25x25 mm 8x8 WS2812-2020 matrix. It's only about 1 square inch, or about a quarter the size of the United States. This micromatrix is daisy chainable, meaning you can stack boards side by side while using only one data pin. Best of all, this matrix is compatible with all other WS2812 related matrix codes and is open source. Despite its small stature, this matrix has everything you need, with pad connections for VCC, ground, data in, and data out. It works with 3.3 V or 5 V and is capable of outputting 16 mA per LED.
You can certainly buy desktop power supplies, but they're not cheap. As the current capacity and output voltage quantity increase, so does the price. While a commercial desktop power supply is certainly worth the investment, you may want to consider a cheaper solution. Adapt an old computer power supply for use on your workbench. Computer power supplies have all the voltages you need and some very impressive current capabilities.
The meiji-led-ring is a compact light source that can be mounted on the front of a Meiji microscope. The illuminator uses 24 LEDs along with some high frequency boost drivers to avoid flickering when shooting. The device is powered by the USB-C port. A small ATSAML10 microcontroller is used to control the brightness of the LED driver. The user controls a series of touch sensors from the edge of the PCB.
The led-panel originated from the author's desire to use a donated roll of white LEDs to break out 48 LEDs on a compact board. Its output power should reach about 4W. It has no controller and is purely for testing a set of LEDs to see if they would be suitable for some form of lighting attached to a gooseneck.
Not only is it open source, the author also has a super-detailed record of the design process. The bandwidth of each analog channel is not reduced in order to reduce costs. Each channel has a bandwidth of 350MHz, and higher sampling rate support can be designed in the future. Thunderbolt USB4 interface, speed up to 1GB/s (8Gbps)
Design and implementation of solar power generation simulation system based on TMS320F28335
The AC excitation variable speed constant frequency wind power generation experimental system was developed using TI's TMS320F2812 to complete the maximum wind energy tracking control experiment.
A stator-side direct power control algorithm based on multi-frequency proportional integral resonant controller
This design uses LM3S811 as the processor of the lubricating oil dielectric constant detection device, designs the AD5933 impedance measurement circuit, extracts capacitive reactance information from the impedance data, and calculates the change in the lubricating oil dielectric constant based on the change in capacitance to achieve lubrication control. Test the dielectric constant of oil and record the data to find out the change pattern between lubricating oil quality and dielectric constant.
The overall structure of this design is roughly composed of a main control module, a current signal sampling module, a power module and a serial port output module. In this article, the main control chip uses a microcontroller model STM32F103RC, which makes the structure as small as possible while ensuring the current sampling accuracy. It is as simple as possible, avoids complex and changeable circuit layout, is more convenient for PCB board production, and is relatively low-cost. Among them, in the design of the sampling conditioning circuit, a current transformer is used to sample the current signal.
This project uses the 430 series MSP430F5310 microcontroller as the central processing unit to develop a new type of fault indicator to indicate phase-to-phase short circuit faults and single-phase ground faults that occur on transmission and distribution lines of 10KV and below. Its main working process is: sensing real-time voltage and current values from the high-voltage line, and sending them to the microcontroller for analysis and calculation after hardware processing. If the fault conditions are met, a flop signal is sent to cause the indicator to flop, and the action information is transmitted wirelessly. The communication module transmits the information to nearby communication substations.
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