🧰 MATERIALS: Individually addressable LED strip soldered in a 30 x 12 LED grid Arduino Micro SD card reader module Push button 10.000 mAh power bank Wires and copper tape Black cotton fabric Elastic ...

RFID Reader MFRC522 Module(x1): 13.56MHz RFID reader ... capacity by using larger EEPROM modules or adding SD card storage for handling hundreds of users. Building an RFID attendance system using ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I ...

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A very simple low cost system, with 2 lowcost sensors (SHTC3, SCD40 by Adafruit). One measures temprature and RH and the other measure CO2 as well. Conected to Arduino Uno and uploads the data to SD ...

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