Long duration timer with Attiny2313 circuit

MCU controlled Bluetooth automation circuit

The microcontroller used is 0822 zilog encore! 8k series (soic,28pin) as shown on the figure. Is a programmable microcontroller, the functions used are the GPIO and the UART of the chip. GPIO is used on led indicators, and the UART...

Microcontroller Clapper Switch

For those who prefer convenience, it is possible to turn the bedroom light on or off without leaving the bed simply by clapping hands. This concept inspired the design of a clap-activated light control system. Various clap switch projects can...

24 Hour Timer

These two circuits are multi-range timers that offer periods of up to 24 hours and beyond. Both circuits are fundamentally similar, with the key distinction being that Version 1 energizes the relay when the time expires, while Version 2 de-energizes...

Delayed start for mains equipment

The schematic requires few components because the timer function has been incorporated by Nutchip. For once, from the start, made up of contacts of the relay RE1 connected to terminal M2. If we turn on an appliance at the end...

DIAL ALARM-1

This is the lowest cost dialing alarm on the market and shows what can be done with an 8-pin microcontroller. The complete circuit is shown below. You cannot see all the features of this project by looking at the circuit...

microcontroller led interfacing

The initial step often taken when learning about any microcontroller or embedded system is to make an LED blink. The circuit presented below illustrates the setup for interfacing an LED. Note: Due to the large dimensions of the circuit diagram,...

As control the discharge tube type delay circuit

The circuit described is a discharge delay circuit that offers a longer delay compared to a standard rechargeable delay circuit, while also maintaining relatively high accuracy. The schematic diagram illustrates the input and output waveforms. Typically, when there is no...

Timed Safety Circuit Circuit

When switch SI is closed, pin 9 of operational amplifier U1 goes low, activating transistor Q1 for a predetermined duration. If switch S2 is closed during this time, transistor Q2 is activated for another predetermined duration. Resistors R1 and R13...

Electronics Projects Circuits

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