This General-Purpose- Alarm-Device repository defines a 'General Purpose Alarm Device' aka, GPAD module. This module has an enclosure and inside is an embedded microcontroller system. #internetOfThings #smartHomeDevices
Fire Alarm circuit project, a thermistor works as the heat sensor. When temperature increases, its resistance decreases, and vice versa. Fire Alarm system works off a 6V-12V regulated power supply. Timer IC NE555 (IC1) is wired as an astable multivibrator oscillating in audio frequency band.
CheckIt is a daily habit tool. When you complete a habit, flip a switch, then an LED lights up. Future work will include wiring the 24pin FPC port to the Pico which causes an e-paper screen to display a message when a switch is flipped. This PCB runs using a Raspberry Pi Pico and has plans to be battery powered similar to a digital alarm clock.
Controller board for a dental suction vacuum pump system using a 24 V low-voltage control board, VFD motor drive interface, 4–20 mA vacuum sensing, float/temperature safety inputs, solenoid flush output, alarm output, and local display.
Have you ever wanted to wake up to one of the most energizing scents? Have you ever wanted that cup of energy in your hands before you even slide out of your covers?
Well want no further! Introducing the Coffee Waker; The knight of your nightstand, a coffee maker alarm clock with one soul purpose, to quickly and scrumptiously wake you up.
This is the Coffee Waker Main board. It contains an ESP32-S3, 16 bit Load Cell ADC, 16 bit MP3 DAC, 120V heater cartridge relay, and 12C wakeup light convector.
Have you ever wanted to wake up to one of the most energizing scents? Have you ever wanted that cup of energy in your hands before you even slide out of your covers?
Well want no further! Introducing the Coffee Waker; The knight of your nightstand, a coffee maker alarm clock with one soul purpose, to quickly and scrumptiously wake you up.
This is the Coffee Waker Main board. It contains an ESP32-S3, 16 bit Load Cell ADC, 16 bit MP3 DAC, 120V heater cartridge relay, and 12C wakeup light convector.
This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power & logic!
Short for GPAD by the Public Invention is a general purpose alarm device (with software) as a module for medical devices (and others). It is based on the Arduino Uno Atmega328 design and may similarly become extensible through headers and shields. #internetOfThings #smartHomeDevices
A Fridge door Alarm is a simple PCB project designed to detect & inform the status of any refrigeration unit’s door: whether its open or not. It produces a monotonous beeping noise if the fridge door is left open for too long by an accident. It’s common use is in refrigerators, Temperature Controlled Freezers & beverage coolers.
Low-voltage monitoring circuit for a nominal 24V DC input. The TL431 threshold detector and BC547B driver activate a 5V active buzzer when PLUS drops below about 19.5V.
