The author noticed that the AC line frequency changes in spans of 0.4 Hz and periods of several minutes, so I wanted to examine long-term changes in AC line frequency and voltage. This is a project to build a line voltage frequency monitor. It is not a complete instrument but a simple measurement adapter designed to be embedded in some measurement system with a PC or microcontroller.
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.
Grapevines use a lot of water and the soil dries out quickly, so they need to be watered twice a day. This project is about using an unmanned watering system to water flower pots.
This design mainly explains the circuit and software design of the node equipment, coordinator equipment and gateway equipment in the greenhouse, completes the front-end and back-end interaction between the web page and the WeChat applet, and completes the data transmission test and communication distance test.
This Bilibili small TV uses esp32 as the main control, lvgl GUI interface design, and is developed based on idf4.0 to support smartconfig or WeChat airkiss distribution. Its functions include: network connection display, network acquisition time, weather display, temperature and humidity collection, Fan count display, mqtt temperature and humidity upload, etc. All software and hardware are open source.
Flipper Zero is a portable multi-tool designed for developers and geeks with a toy-like body. It enjoys exploring digital content such as radio protocols, access control systems, hardware, and more. It's completely open source and customizable, so you can extend it in any way you like.
All 12 I/O pins of this design are broken out to 0.1" headers. All 4 TX/RX channels and the reference clock are broken out to SMA connections.
This design is a breakout board for SGMII Gigabit Ethernet PHY DP83867C. It connects to SERDES via a SYZYGY-TXR connector to test and evaluate Ethernet over 1.25Gbps serial channels. 2 channels are used and CDR is required on the RX path. Compared to RGMII, SGMII significantly reduces the number of signals required for routing.
Connect to a 5" LCD paired with a Sipeed Tang Nano. This is an 800x480 LCD with RGB888 connections. All 8 bits of each channel are connected via SYZYGY connectors.
This design is a plug-in from FLIR's Tau2 LWIR core. Both the LVDS and CMOS channels are connected to the UART configuration channel through the SYZYGY connector.
Plug-in for FLIR's boson LWIR kernel. The 24-bit CMOS channel is connected through the SYZYGY connector along with the UART configuration channel.
The project is a small desktop-level robot tool that can be used to help you control your computer, etc. Its functions can be defined by you. The inspiration for the appearance design is EVE in WALL-E~ The robot has a USB communication display screen function, has 6 degrees of freedom (one roll and pitch for the hand, one for the neck, and one for the waist), and uses its own modified special servo to support the joints Angle return.
Arduino® Nicla Vision is a ready-to-use standalone camera for analyzing and processing images at the edge. It's suitable for asset tracking, object recognition and predictive maintenance thanks to its 2MP color camera, smart 6-axis motion sensor, integrated microphone and distance sensor. Quickly implement sensor nodes that send collected data to the Arduino® Cloud (or third-party vendor service) via integrated WiFi/BLE connectivity.
High reference value, the 50-year-old work of FatFS author ChaN
The board of this design is intended to sit between the fundamental and harmonic boards and monitor the SPI data running to the display. Onboard ECP5 will mirror the display and output a copy to a digital monitor.
Ported the 3D rotation + meteor shower background demo to H7, and the pure rendering is very smooth.
Simple branching of HDMI cable signals for analysis/verification of signal level and phase.
ESP32s2 Thermal Imager=ESP32s2 + Lepton 3.5 + Battery charger + 240x240 pixel LCD
ESP32S2 + Sharp memory LCD + prototyping area
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