Picoclick is a simple IoT button in a very small package. The size of the PCB is only 18x20mm, and the height with the 300909 battery is only about 10mm. It's able to connect to your local WiFi at an impressive speed of about 1.5 seconds on average. Yes, since it calls IOT-Button, it uses WiFi of course! This opens up countless possibilities for that little device.
Inspired by the EEZ H24005 programmable power supply project, which has attracted many enthusiasts with its feature set, rich user interface, DIY friendliness and completely open source hardware and software design.
The keyboard uses a modular design. The multi-functional scene interaction module on the left can be replaced with various custom components. By default, a Dynamic component with an e-ink screen and FOC force feedback knob is used; the keyboard body uses a shift register method to implement the key scanning circuit; The module and keyboard body can be used alone, or they can communicate and call each other through the serial port protocol.
The core idea of USB portable programmable instruments is to provide electronic engineers and enthusiasts with a series of low-cost, portable, network-enabled, programmable, and open source practical tools. The multifunctional USB power supply is the first of its kind and is expected to complement traditional adjustable regulated power supplies.
The author is located in an area with a lot of convective weather and hot and humid weather. I stared at it silently, and saw that the clothes to be dried came in and out five or six times a day... Weather forecast on the mobile app? Weather warning text message? It can only be regarded as a late report. I am lazy, do it myself, have enough food and clothing...
Control board for automotive motor control applications based on SPC58NN84E7
The LS1028A development board has most of the features of the LS1028A processor, built with a high-performance core, HMI functionality and TSN.
This project uses LSM6DSOX high-performance sensor and LIS25BA high-precision bone conduction sensor to control the four-axis robotic arm. By combining FMS and MLC with LSM6DSOX, the robotic arm can grab and put down items. Through LIS25BA, the vibration can be recognized and the steering gear can be controlled to complete the corresponding actions.
I²C bus RTC demo board
Maxim's Santa Cruz (MAXREFDES23#) reference design is the world's smallest IO-Link® light sensor compliant with IEC 61131-9. The Santa Cruz has six different types of sensors: ambient light (clear), red, green, blue, infrared, and is also a temperature sensor. The entire design fits onto a 6.5mm x 25mm printed circuit board (PCB).
The hardware is independently completed by the Raspberry Pi microcontroller RP2040, which costs 5 yuan a piece. Just close a trigger design baseboard designed by KiCAD. The software is created using VSCode + GCC + Cmake. It doesn’t matter if you don’t know how to use it. The firmware is upgraded using the U disk drag-and-drop method that comes with the Raspberry Pi chip.
The current design solution uses an 8-bit ADC chip ADC08100 and a 100M bandwidth front-end analog circuit. In fact, if you want to play, you can improve the indicators and use AD9288 or the domestic alternative MXT2088. One chip has two channels and achieves a 250M sampling rate through rapid alternating sampling.
ESP-Drone can be connected and controlled through Wi-Fi network using mobile APP or game controller. Currently, it supports multiple modes such as self-stabilizing flight, fixed-altitude flight, and fixed-point flight. This solution has a simple hardware structure, clear code structure, supports function expansion, and can be used in STEAM education and other fields.
ODrive is a high-performance FOC servo driver based on STM32. It can drive two brushless motors at the same time. In the early days, it was widely used in the design of 3D printers or homemade CNC lathe electrical systems. The well-known geek James Bruton used it as most of his own To make the core unit of the robot servo drive, Stanford's previous open source 8-degree-of-freedom quadruped robot Doggo also used Odrive as the core driver.
Watchy is a completely open source and customizable e-ink screen watch. It uses ESP32-PICO-D4 as the core, has WiFi and Bluetooth LE connectivity, and is compatible with Arduino, MicroPython and ESP-IDF. The 200x200 pixel resolution e-paper display is clearly visible in bright sunlight and has ultra-low power consumption.
A practical heating table for PCB reflow soldering. It is quite cool. It may be the most beautiful and functional heating table on the market. Parameters: The hardware is based on the ESP32PICO-D4 chip, the input power is 24V/10A, the maximum power is 200W, and the heating temperature is up to 300°C. It has Bluetooth function. If I have time later, I will develop a mobile APP to set the temperature rise curve.
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