We emulate the TDG series remote controls using the GSM Shield. It’s not been long since we presented our GSM shield for GSM/GPRS modules SIMCom, QUECTEL, FIBOCOM etc. that was born to be incorporated in Arduino-based projects involving cellular connectivity; now it’s time to move on to the first practical application, which in this case…
Motion detector based on the Doppler effect, made by combining a specific sensor with a circuit that amplifies the output signal. Now the devices used in presence and movement detection systems, to be combined with automations for opening doors and turnstiles but also with anti-theft and anti-intrusion systems, stand out passive infrared radars (otherwise called…
It solves the problem of pitch loss that can trouble 3D printers and which, especially in large printers that require many hours to print parts, can mean huge losses of time and money. In previous posts we presented a stepper motor driver, which we named MotorFish, whose special feature is to work in closed loop…
Let’s describe the firmware of the stepper motor feedback controller and test it on the 3D printer. (Read the first post) In the limits of non-retroactive stepper motor control is that in applications for the drive of machines, CNC milling machines or 3D printers, the positioning can be affected by an error that makes it…
Controller with stepper motor feedback able to dynamically check the shaft positioning and prevent possible step losses. Who has never happened to launch a complex and long 3D print, maybe a job of hours or dozens of hours, to be absent and discover that, when the job was almost finished, the printer engines lost a…
Innovation and the general public in contact again! Thanks to the constant progress of the vaccination campaign, “Maker Faire Rome – The European Edition“, the biggest European event dedicated to innovation, promoted and organised by the Chamber of Commerce of Rome, is back on time again this year, but with the great novelty of reopening…
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…
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…
Getting to know and evaluate the software offer for PCB, in order to choose the best one for our needs. Designing an electronic board is a considerable and varied effort, both in terms of board design, starting from its functional specs, and in terms of construction. In order to create an integrated board, we…
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…
Rubik’s cubes have been mystifying and frustrating people for more than 40 years now. According to Forbes, 450 million Rubik’s cubes had been sold by 2020. But based on our very scientific estimates, only a small fraction of those have been solved. To avoid that difficulty, Stuart Gorman gave his Rubik’s cube chandelier the ability…
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