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In this project, we’ll build a wireless UV intensity monitor that uses the Beetle ESP32 C6 and the Grove Sunlight Sensor. We’ll leverage the ESP-NOW protocol for efficient, low-latency communication between devices. This setup will allow you to monitor UV intensity remotely and receive real-time updates. Let’s dive into the details! 🚀 Materials Needed 🛠️ Beetle ESP32 C6: A compact and powerful microcontroller. Grove Sunlight Intensity Sensor: A sensor capable of detecting UV, visible, and infrared light. Grove Base Shield: To easily connect the sensor to the Beetle ESP32 C6. Jumper wires: For connections. USB Type-C cable: To power and program the Beetle ESP32 C6. Power source: A battery or USB power bank for portability. Get PCBs for Your Projects Manufactured You must check out PCBWAY for ordering PCBs online for cheap! You get 10 good-quality PCBs manufactured and shipped to your doorstep for cheap. You will also get a discount on shipping on your first order. Upload your Gerber files onto PCBWAY to get them manufactured with good quality and quick turnaround time. PCBWay now could provide a complete product solution, from design to enclosure production. Check out their online Gerber viewer function. With reward points, you can get free stuff from their gift shop. Also, check out this useful blog on PCBWay Plugin for KiCad from here. Using this plugin, you can directly order PCBs in just one click after completing your design in KiCad. Step 1: Hardware Setup 🔧 Connect the TFT Display to the FireBeetle: Attach the TFT screen to the FireBeetle ESP32 C6. This shield simplifies the data visualization form Grove sensors and modules. Connect the Sunlight Sensor: Plug the Grove Sunlight Intensity Sensor into one of the I2C ports on the Beetle ESP32 C6. The I2C ports are usually labeled and color-coded for convenience. Power the Board: Connect the boards to a power source using the USB Type-C cable. You can use a battery or a USB power bank if you want to make your setup portable. Step 2: Software Setup 💻 Install Arduino IDE: If you haven’t already, download and install the Arduino IDE from the official website. Add ESP32 Board to Arduino IDE: Open Arduino IDE and go to File > Preferences. In the “Additional Board Manager URLs” field, add: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json. Go to Tools > Board > Board Manager, search for “ESP32”, and install the ESP32 board package. Select the Beetle ESP32 C6 Board: Go to Tools > Board and select Beetle ESP32 C6. Choose the correct port from Tools > Port. Step 3: Setting Up ESP-NOW Communication 📡 Understanding ESP-NOW: ESP-NOW is a wireless communication protocol developed by Espressif. It allows multiple ESP32 devices to communicate with each other without the need for Wi-Fi or a router. It operates as a peer-to-peer (P2P) protocol, meaning it allows direct communication between devices. Configuring ESP-NOW: In the setup function, initialize ESP-NOW and register a callback function to handle the status of sent data. Add peers to the ESP-NOW network by specifying their MAC addresses. Change the receiver FireBeetles MAC address in the transmitter code. Step 4: Coding 👨‍💻 Install Required Libraries: Open Arduino IDE and go to Sketch > Include Library > Manage Libraries. Search for and install the following libraries: Grove_Sunlight_Sensor WiFi ESP-NOW Write the UV Intensity Monitoring Transmitter Code: #include <esp_now.h> #include <WiFi.h> #include "Si115X.h" Si115X si1151; // REPLACE WITH YOUR RECEIVER MAC Address uint8_t broadcastAddress[] = {0x54, 0x32, 0x04, 0x08, 0x1E, 0xFC}; // Structure example to send data // Must match the receiver structure typedef struct struct_message { float a; float b; } struct_message; // Create a struct_message called myData struct_message myData; esp_now_peer_info_t peerInfo; // callback when data is sent void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) { Serial.print("\r\nLast Packet Send Status:\t"); Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail"); } void setup() { // Init Serial Monitor Serial.begin(115200); if (!si1151.Begin()) { Serial.println("Si1151 is not ready!"); while (1) { delay(1000); Serial.print("."); }; } else { Serial.println("Si1151 is ready!"); } // Set device as a Wi-Fi Station WiFi.mode(WIFI_STA); // Init ESP-NOW if (esp_now_init() != ESP_OK) { Serial.println("Error initializing ESP-NOW"); return; } // Once ESPNow is successfully Init, we will register for Send CB to // get the status of Trasnmitted packet esp_now_register_send_cb(OnDataSent); // Register peer memcpy(peerInfo.peer_addr, broadcastAddress, 6); peerInfo.channel = 0; peerInfo.encrypt = false; // Add peer if (esp_now_add_peer(&peerInfo) != ESP_OK) { Serial.println("Failed to add peer"); return; } } void loop() { Serial.print("IR: "); Serial.println(si1151.ReadIR()); Serial.print("Visible: "); Serial.println(si1151.ReadVisible()); // Set values to send myData.a = si1151.ReadIR(); myData.b = si1151.ReadVisible(); // Send message via ESP-NOW esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData)); if (result == ESP_OK) { Serial.println("Sent with success"); } else { Serial.println("Error sending the data"); } delay(2000); } Write the UV Intensity Monitoring Receiver Code: #include <esp_now.h> #include <WiFi.h> #include "DFRobot_GDL.h" #define TFT_DC D2 #define TFT_CS D6 #define TFT_RST D3 DFRobot_ST7789_240x320_HW_SPI screen(/*dc=*/TFT_DC, /*cs=*/TFT_CS, /*rst=*/TFT_RST); int led = 15; // Structure example to receive data // Must match the sender structure typedef struct struct_message { float a; float b; } struct_message; // Create a struct_message called myData struct_message myData; // callback function that will be executed when data is received void OnDataRecv(const uint8_t * mac, const uint8_t *incomingData, int len) { memcpy(&myData, incomingData, sizeof(myData)); Serial.print("Bytes received: "); Serial.println(myData.a); float a1 =myData.a; Serial.print("Float: "); Serial.println(myData.b); Serial.print("Float: "); float b1 =myData.b; Serial.println(); int16_t color = 0x00FF; screen.setTextWrap(false); screen.setRotation(1); screen.fillScreen(COLOR_RGB565_BLACK); screen.setTextColor(COLOR_RGB565_GREEN); screen.setFont(&FreeMono9pt7b); screen.setTextSize(1.5); screen.setCursor(20, 30); screen.println(" --UV Intensity Meter-- "); screen.setCursor(0, 60); screen.println("UV: "); screen.setCursor(0, 90); screen.println("Light: "); screen.setTextColor(COLOR_RGB565_RED); screen.setCursor(135, 60); screen.println(a1); screen.setCursor(195, 60); screen.setCursor(135, 90); screen.println(b1); screen.setCursor(195, 90); digitalWrite(led, HIGH); } void setup() { // Initialize Serial Monitor Serial.begin(115200); screen.begin(); Wire.begin(); pinMode(led, OUTPUT); // Set device as a Wi-Fi Station WiFi.mode(WIFI_STA); // Init ESP-NOW if (esp_now_init() != ESP_OK) { Serial.println("Error initializing ESP-NOW"); return; } // Once ESPNow is successfully Init, we will register for recv CB to // get recv packer info esp_now_register_recv_cb(esp_now_recv_cb_t(OnDataRecv)); } void loop() { } Step 5: Upload and Test 🚀 Upload the Code: Connect your Transmitter code Beetle ESP32 C6 and Receiver code to FireBeetle ESP32 C6 to your computer and upload the code using the Arduino IDE. Test the Sensor: Once the code is uploaded, the sensor will start measuring UV intensity and send the data wirelessly using the ESP-NOW protocol let's see the response from the serial terminal. Transmitter Response: Receiver Response: Detailed Explanation of the Code 📝 Libraries and Initialization: The code includes the necessary sensor, Wi-Fi, and ESP-NOW libraries. The sensor is initialized in the setup() function. Reading Sensor Data: In the loop() function, the sensor readings for UV, visible, and IR light are obtained and printed to the serial monitor. Sending Data via ESP-NOW: The sensor data is sent to a peer device using the ESP-NOW protocol. The OnDataSent callback function handles the status of the sent data. Delay: The delay(10000) function ensures that the sensor readings and data transmission occur every minute. Conclusion 🎉 Congratulations! You’ve successfully built a wireless UV intensity monitor with the Beetle ESP32 C6 and the Grove Sunlight Intensity Sensor, using the ESP-NOW protocol for communication. This project can be expanded further by adding sensors or integrating with other IoT platforms. Feel free to share your project and any modifications you make. Happy building! 🛠️

Hi Redge, You can build a delay timer circuit to protect your fridge. Here’s a basic outline: 1. **Power Relay**: Use a relay rated for 240V AC and at least 10A (to handle the fridge's startup current). 2. **Delay Timer**: Use an off-delay timer module, adjustable up to 10 minutes. 3. **Wiring**: - **AC IN to Timer**: Connect the AC input to the timer's power input. - **Timer to Relay**: Connect the timer's output to the relay's control input. - **Relay to Fridge**: Connect the relay's switch terminals between the AC input and the fridge. **Operation**: - When AC IN is turned off, the timer starts the delay. - The relay will only activate and supply power to the fridge after the 10-minute delay, even if AC IN is switched back on immediately. Ensure all components are rated for 240V and handle the required power safely. If unsure, consult an electrician for assistance.

You say: " one wanted the current to rise lowly from 5 volts to 10 volts each ten seconds," Is 5 volts off for the lamp? Also you all say: "had its light intensity decreasing to zero volts:" That statement is confusing; which is going to zero the light intensity or the applied voltage?

Xe Ghép Giá Rẻ là đơn vị chuyên cung cấp dịch vụ xe taxi ghép tiện chuyến Vĩnh Phúc đi Hà Nội và ngược lại được nhiều hành khách yêu thích và tin tưởng lựa chọn nhờ chất lượng dịch vụ cao, mức giá phải chăng, tiết kiệm chi phí, thoải mái và tiện lợi.

In this blog, I will show you how to integrate an ultra-sonic sensor with ESPHome in home assistant. An ultra sonic sensor is a device that can measure the distance to an object by sending and receiving sound waves. It can be used for various applications, such as obstacle detection, level measurement, parking sensors, etc. What is ESPHome and Home Assistant? ESPHome is a system that allows you to easily create and manage custom firmware for ESP8266 and ESP32 devices. It uses a simple configuration file that defines the components and sensors you want to use and generates the code and binary files for you. You can then upload the firmware to your device using a USB cable or over-the-air (OTA) updates. Home Assistant is an open-source platform that allows you to control and automate your smart home devices. It supports hundreds of integrations with different services and devices, such as lights, switches, sensors, cameras, media players, etc. You can access and control your home assistant from a web browser, a mobile app, or a voice assistant. ESPHome and Home Assistant work very well together, as they can communicate with each other using the native API. This means that you can easily add your ESPHome devices to your home assistant without any extra configuration or coding. You can also use home assistant to monitor and control your ESPHome devices, and create automations based on their states and events. How to Integrate Ultra Sonic Sensor with ESPHome in Home Assistant To integrate an ultra-sonic sensor with ESPHome in home assistant, you will need the following: An ESP8266 or ESP32 device, such as NodeMCU, Wemos D1 Mini, or Xiao ESP32 S3 Sense An ultra sonic sensor, such as HC-SR04 A breadboard and some jumper wires A computer with ESPHome and Home Assistant installed. Get PCBs for Your Projects Manufactured You must check out PCBWAY for ordering PCBs online for cheap! You get 10 good-quality PCBs manufactured and shipped to your doorstep for cheap. You will also get a discount on shipping on your first order. Upload your Gerber files onto PCBWAY to get them manufactured with good quality and quick turnaround time. PCBWay now could provide a complete product solution, from design to enclosure production. Check out their online Gerber viewer function. With reward points, you can get free stuff from their gift shop. Also, check out this useful blog on PCBWay Plugin for KiCad from here. Using this plugin, you can directly order PCBs in just one click after completing your design in KiCad. Let's start with hardware the setup Connect the ultra-sonic sensor to your ESP device using the breadboard and jumper wires. The wiring diagram is shown below: Connect VCC to 5V and GND to Gnd and Trigger to pin 0 and ECHO to pin 1. Home Assistant Setup Next, navigate to the Home Assistant and open the ESPHome. Next, select one of your ESP devices or create a new one. In this case I'm going to use my existing device. Open the yaml file and add these following. sensor: - platform: ultrasonic trigger_pin: 0 echo_pin: 1 name: "Ultrasonic Sensor" update_interval: 2s Then next, click install. and choose your prefer method. I'm going to use wirelessly. Because my device is already connected with my network. Wait until it finishes the upload. Then navigate to the device property and here you can see the Sensor measurement. Next, add the measurement to the dashboard. Conclusion In this blog, I have shown you how to integrate an ultra-sonic sensor with ESPHome in home assistant. This is a simple and effective way to use an ultra-sonic sensor in your smart home projects. You can also use other types of sensors and components with ESPHome and home assistant and create your own custom firmware and integrations. I hope you found this blog helpful and informative. If you have any questions or feedback, please leave a comment below. Thank you for reading!

This project will allow you to monitor environmental conditions in your home automation setup. Here are the steps to achieve this: Integrating DHT11 with Beetle ESP32 C3 and Home Assistant 1. Components Required Before we begin, gather the necessary components: BeetleESP32C3 development board DHT11 temperature and humidity sensor Jumper wires USB cable for programming A computer with the Arduino IDE or ESPHome installed Get PCBs for Your Projects Manufactured You must check out PCBWAY for ordering PCBs online for cheap! You get 10 good-quality PCBs manufactured and shipped to your doorstep for cheap. You will also get a discount on shipping on your first order. Upload your Gerber files onto PCBWAY to get them manufactured with good quality and quick turnaround time. PCBWay now could provide a complete product solution, from design to enclosure production. Check out their online Gerber viewer function. With reward points, you can get free stuff from their gift shop. Also, check out this useful blog on PCBWay Plugin for KiCad from here. Using this plugin, you can directly order PCBs in just one click after completing your design in KiCad. 2. Flashing ESPHome to Beetle ESP32 C3 Install ESPHome on your computer. You can follow the instructions in my previous blog. Create an ESPHome configuration file (e.g., dht11.yaml) with the following content: sensor: - platform: dht pin: 0 model: dht11 temperature: name: "Living Room Temperature" humidity: name: "Living Room Humidity" update_interval: 5 s Replace placeholders (YourWiFiSSID, YourWiFiPassword, etc.) with your actual values. Compile and upload the configuration to your Beetle ESP32 C3 using the ESPHome CLI. 3. Integrating with Home Assistant Open Home Assistant. Click on Configuration (bottom left) and go to Integrations. Click the + button and select ESPHome. Enter the IP address of your ESP32 (leave the port as 6053) and click Finish. 4. Viewing Temperature and Humidity Once integrated, Home Assistant will discover the Beetle ESP32 C3 module and create entities for temperature and humidity. You can access these entities in Home Assistant’s dashboard and display them as cards or graphs. And that’s it! You’ve successfully integrated the DHT11 sensor with your Beetle ESP32 C3 and Home Assistant. Feel free to customize and expand this project based on your needs. Happy monitoring! 🌡️💧🏠

Taking the FETMX6ULL-C platform as an example, if you want to use VPN, you need to open the tun configuration in the kernel in the following way: Kernel Compilation Choose either of the two methods below: 1. Modify the.config file directly Locate the.config file in the kernel source path. Find the CONFIG _ TUN in the file and modify it as follows: Replace the kernel's config file with .config. * Subject to actual use. Recompile the kernel. 2. Configure the TUN using the graphical configuration interface Make menuconfig. Locate the following locations: Save and exit after modification, which can be seen in.config Replace the kernel's config file with .config. * Subject to actual use. Recompile the kernel. Update kernel: The arch/arm/boot/zImage file is generated after compilation, and the kernel can be replaced either by updating the kernel separately or by re-burning it. Use this file to replace the file with the same name in the target path of the flashing tool. Refer to the single-step kernel update chapter of the FETmx6ull-c User's Manual to replace the zImage file separately. Compilation module: In the kernel source code, some of the drivers are compiled in the form of modules, which are loaded from the specified path by the kernel version number when the system boots. When we recompile the kernel and update the kernel, the kernel version number in the system will be changed, the kernel version number can be viewed through the uname -r command. When you update the kernel, the uname -r version number changes, but the version number in the path where the module is stored (/lib/modules/) does not change. It may cause the module to fail to load, typically after updating the kernel, WiFi cannot be used. As seen below, the name under uanme -r and the name under /lib/modules/ are not the same, so you can't load the module when you go to the/lib/modules/$(uname -r) directory when booting up, and you need to change both names to be the same. You can solve this problem in two ways: 1. Modify the module load path and change to the version number of the kernel; 2. Repackage modules; The first method has two disadvantages: a. Not suitable for batch modification; b. Not suitable for changing the module driver; So it is possible to repackage the module when compiling the kernel: After executing the above operation, .tmp/root/modules.tar.bz2 will be generated, which can replace the file with the same name under the target path in the flashing tool. It is also extracted directly in the file system:

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Protecting your refrigerator and adopting good practices can contribute to energy savings and ensure the appliance operates efficiently. Here are some tips for fridge protection to save energy: Proper Temperature Settings Regular Cleaning and Defrosting Proper Ventilation Check and Seal Door Gaskets

I ordered a LYG55T024FS52S motor (https://www.hurst-motors.com/lyg55geared.html), but I misread the information about the capacitor. I thought it said capacitor was supplied with the motor, but that was only for the 115 VAC motors. Since I ordered the 24V, mine did not come with a capacitor. So I’m looking to buy one. The spec sheet says I need a 20/15 mfd 50/60 Hz capacitor. This is the closest I’ve found: http://www.mcmaster.com/7245K721/ Will that work for this purpose?

Why not read books that interest you? For example:: Digital Design and Computer Architecture

Analog high definition (AHD) is well-known HD-CCTV technology. It was created as an affordable option for long-distance video transmission. It is a digital HD-CCTV system that uses coaxial cable to compress and transmit analog HD video signals. In closed-loop video surveillance applications, video creation, and vehicle surveillance, this technology is more widely used. It is the perfect solution for situations where big amounts of data need to be delivered at low prices due to its uncompressed high-definition video signal delivery. Using coaxial and RCV cables, this technology supports the transmission of video. Additionally, it has a reputation for being able to sustain a constant video signal free from interruption, which is crucial in any circumstance requiring high-quality video images. This made the upgrade much more cost-effective than a complete switch to an IP system, eliminating the need for extensive rewiring. Working of analog HD camera An Analog HD camera is a type of video camera that uses a combination of analog technology and digital processing to capture, store, and transmit high-definition images. They work by capturing and transmitting images in the form of an analog signal. Using security cameras as an example, in more detail, they record an analog video signal for use in a traditional analog CCTV application and deliver that signal via coaxial cable to a digital video recorder (DVR). Each camera is powered by a cable that bundles the power and video cables. The analog signal is compressed and digitalized by the DVR before being saved to a storage device for future retrieval. The DVR is intelligent enough to handle operations like digital zoom, motion detection, and scheduling. Either monitor can be connected to the DVR, or the DVR can be set up to publish via an internal network for viewing on PCs.

You can take a look at the Klein Tools VDV512-101 Cable Tester.