Demonstrating the motorized lock on my home alarm system based on the Raspberry Pi.
The lock has been used daily for almost half a year now. The alarm system has been running for three years.
The two servo motors are controlled by an ATmega32U4 which, in turn is controlled by the RPi over USB serial. The RFID reader communicates directly with the RPi over serial.
In the rare case of a power outage, there’s a UPS that keeps the system running for ~15 hours.
All plastic parts are printed in PLA with a Printrbot Play.
PowerBoost 1000 Charger – Rechargeable 5V Lipo USB Boost @ 1A – 1000C: PowerBoost 1000C is the perfect power supply for your portable project! With a built-in load-sharing battery charger circuit, you’ll be able to keep your power-hungry project running even while recharging the battery! This little DC/DC boost converter module can be powered by any 3.7V LiIon/LiPoly battery, and convert the battery output to 5.2V DC for running your 5V projects. Read more.
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Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: A New Arduino MicroPython Package Manager, How-Tos and Much More! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi
EYE on NPI – Adafruit Daily — EYE on NPI Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey