Loko is an open source, battery-operated GPS tracker. It's a small, simple, and useful device that sends navigation data to its receiver via a peer-to-peer LoRa radio. Unlike other similar technologies, there are no ongoing costs. Loko is based on radio communication and requires no SIM card/monthly fee. It also works everywhere, even without 2G/3G/LTE coverage.
HiPo is a 3.52-inch e-paper display module the size of a business card. Content is uploaded via NFC via a convenient app, no batteries required. The development board can compile different display functions by editing the code.
The SOCORAD32, also known as the ESP32 Software Controlled Radio, is a professional grade hackable radio for amateur radio exploration, voice and data communications using simple AT commands. Just add a speaker and batteries and you've got a fully functional walkie-talkie. With a dedicated Push-to-Talk (PTT) button onboard, SOCORAD32 works right out of the box without touching a line of code!
Plant Bot is an open source project based on ESP32 that allows a single PCB to perform the functions of detecting humidity, watering, providing lighting, and controlling and communicating with the user via WiFi/BLE.
This is what smart home enthusiasts want to control their entire lights, thermostat, or any other smart device from their couch without having to activate a wall switch.
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.
“Using the color of the desk lamp to show the growth rate of COVID-19 virus infections in a country or region, the display effect is more intuitive and not as stressful as chart data.”
Alex Newton released an IoT electrocardiogram monitoring (ECG) tutorial based on ESP32, demonstrating that remote cardiac monitoring can be carried out no matter how far the distance is between the doctor and the patient.
Alan Wang, a maker from Taiwan, used the MAX7219 LED module, the ESP8266-based D1 micro development board and MicroPython to develop a small tool that can update COVID-19 data in various countries in real time.
A distance monitor based on ESP8266 can remind people to maintain appropriate social distance at any time during the COVID-19 epidemic to prevent the spread of the virus.
Let’s see how to easily hack a remote control using ESP8266.
A low-cost, non-contact DIY infrared thermometer based on ESP8266 can help people measure their temperature safely and prevent the spread of the new coronavirus.
Use the PIO plug-in of VSCode to directly open the project folder under the Code directory for compilation~
With electronic ink screen, can simulate various IC cards
FossaSat-1 uses cheap LoRa modules to provide free and open source IoT communications around the world, allowing students to communicate with satellites for less than 20 euros.
RSL10 QFN EVB is used as the main control of IOT lamps. Because the GPIO of RSL10 is limited, the data protocol adopts single-line return-to-zero code communication method. The system only needs one GPIO1 as the LED RGBW driver. GPIO is used to drive WS2812. WS2812 is a control circuit and An intelligent externally controlled LED light source with integrated light-emitting circuit. Its appearance is the same as a 5050LED lamp bead, and each component is a pixel. The pixel contains an intelligent digital interface data latch signal shaping amplification drive circuit, a high-precision internal oscillator and a 12V high-voltage programmable constant current control section, which effectively ensures that the color of the pixel light is highly consistent. , the other ADC port is used to collect the temperature of the lamp, and when the temperature exceeds the limit standard, it automatically reduces the luminous efficiency of the lamp to avoid burning out the LED due to excessive temperature.
A smart wearable device based on the RSL10 development board officially provided by EEWORLD. This device is divided into two parts: the host and the slave. However, this MCU only has one UART, but in actual project requirements we need to use two UARTs. The organizer of this event gave five boards, so a board without a sensor is used as the SPI slave and will receive The command parses and uses AT commands to control the audio.
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.
It consists of two parts: the outdoor end (Outdoor) and the indoor end (Indoor). The Outdoor end can be placed outside the window to monitor real-time outdoor temperature, humidity, air pressure, illumination and other information. The Indoor is placed indoors to receive weather data and display it.
The project implementation uses RSL10 and external mechanical control structure to complete wireless control of traditional switches.
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