We create the instrument that the reports have brought in vogue, but that for years has been used in hospitals and in sports medicine to verify the degree of oxygenation of the blood. The Coronavirus epidemic that we have experienced, and in a certain sense are still experiencing, has put on everyone’s lips terms such…
In this project we will see how to make a smart pot that can show the emotion of a plant. It uses a soil moisture sensor to monitor the state of the soil and then displays an emoticon expression for that moisture level. To carry out this project we first need a plant pot. In…
In this project we see how to build an IOT-based dust monitoring system that can measure surrounding dust, send data over the Internet, and monitor the long-term value graphically. We use a Sharp gp2y1014au0f particle sensor which uses an IR LED and when the particle enters the sensor, the light bounces back to a photodetector….
8 relays controlled by 8 opto-isolated digital lines or by Raspberry Pi. It’s not the first time that we propose a relay board, because in these pages you have found both generic control boards that can be driven with voltage levels and logic states, and specific boards for use with Arduino. Still, surely the project…
It automatically supplies meals to your pet at preset times, by providing the daily dose of cat kibble. Having a pet involves big responsibilities, first of all granting them food; unfortunately, a hectic lifestyle and imposed workhours do not go hand-in-hand with the needs of our four-legged friends, and surely anyone living on their…
Identify faces in a video or live shot and recognize if they are wearing a mask: easy with the “raspberry”. The spread of COVID-19 has created a global health crisis that has had a profound impact on humanity, the way we perceive our spaces and our daily lives. As of December 2019, we have witnessed…
As Peter Balch explains, COVID-19 can sometimes give rise to cardiac complications. So, while not presented as an actual piece of medical equipment, he decided to construct an ECG (electrocardiogram) unit using an Arduino Nano for control along with an integrated 320×240 SPI display. His battery-operated device features an AD8232 heart rate monitor module to…
Connected to the USB port of a computer, it allows you to simultaneously control four dual-channel infrared receivers of the POWER FUNCTIONS LEGO® series through simple serial commands. A few years ago LEGO®, manufacturer of the most famous brick in the world, introduced a system to make the most important sets dynamic through a very…
In this project we’ll create a PCB shield for the ESP32-CAM AI-Thinker board with a PIR motion sensor, a BME280 temperature, humidity and pressure sensor and some additional exposed pins. We’ll create a Telegram bot for the ESP32-CAM that allows you to control your board from anywhere to request a photo, sensor readings or…
This uses a buck converter as a 5V Output to charge the battery(Li Po/Li-ion). And Boost converter for 3.7V battery to 5V USB output for devices needed 5 V. Similar to the Original system that uses Lead Acid Battery as an energy storage charge by either PWM or MPPT controller. And supply for 12V Devices. This One only…
We ensure social distancing with an audible and visual beacon that alerts you when you’re getting too close to a store counter, kiosk or counter. Since the “restart” after COVID-19 and the various Phase 2, Phase 3 and who knows what else, the expression “social distancing” has entered the common language and also our life…
Let’s combine the Fishino UNO power with the convenience of Google Home voice assistants, so that we can forget about the remote control and manage various devices with simple phrases. With this project, we are going to exploit the new technological ecosystems that are populating our homes: the voice assistants. In particular, we will see…
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