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brim

brim

@copilot explain this project.
2y

copilot

This project is a Photography Timer designed around an ATMEGA8-16AU microcontroller, with OLED display and button controls. Here are the main components and their roles:
  • ATMEGA8-16AU (U1): The central unit controlling the logic. It connects with the OLED display, buttons, a USB connector, and various other electronic components to control the camera trigger.
  • PC817XNNIP0F (OK1, OK2): These are optoisolators, they are used to isolate different parts of the circuit electrically, to protect delicate components from surges.
  • Push buttons (SW1, SW2, SW3, SW4): These are the physical interfaces for the user to interact with the timer.
  • USB_B_Micro (J3): This is a micro USB connector for charging and possibly for programming the ATMEGA8 microcontroller.
  • MCP73831T-2ACI/OT (U2): This is a battery charge management controller from Microchip. It's used to handle the charging of the battery when the device is connected via USB.
  • Various resistors (R) and capacitors (C): These are likely used for debouncing the buttons, shaping the voltage of the battery for the Microcontroller, and the other discrete needs of the circuit.
  • 1N4148WS-7 (D1), 2N7002 (Q1), NDS356AP (Q2): These are various diodes and transistors used for power management and signal control within the circuit.
  • LCD_SCK and LCD_SDA designators: These designators are most likely reserved for communication with the OLED display through the I²C or SPI interface.
The goal of the circuit is likely to take user inputs (like delay timing, exposure time etc.) via the push buttons and display it on the OLED screen. After processing, the microcontroller will send electric signals to trigger the camera at the appropriate times. The camera trigger is seemingly controlled via the CAM_CONN (M1) component representing a camera connection.
Please note that some of the values and uses of components are assumed based on typical uses, such as resistance values and cap values, as they are not given in the design. The actual purpose and functionality could vary based on the complete design and code programmed into the ATMEGA8-16AU.
2y
088

088

Quiero un sistema de activación por medio de la intensidad de la luz
1y

copilot

Para diseñar un sistema de activación basado en la intensidad de la luz podemos utilizar un fotodiodo o un LDR (Resistor Dependiente de Luz). En este caso, describiré una implementación simple usando un LDR, que varía su resistencia en respuesta a cambios en la intensidad de la luz. Este esquema puede conectarse al microcontrolador ATMEGA8-16AU para tomar decisiones basadas en la intensidad de la luz percibida.
Componentes necesarios:
  1. LDR (Resistor Dependiente de Luz): Para detectar el nivel de luz.
  2. Resistor: Para formar un divisor de voltaje con el LDR y generar una señal analógica proporcional a la intensidad de la luz.
  3. ATMEGA8-16AU (U1): Para procesar la señal analógica y tomar decisiones de activación.
Diseño del circuito:
  • Conectar LDR en un divisor de voltaje:
    • Conecta un extremo del LDR a VCC.
    • Conecta el otro extremo del LDR a una entrada analógica del ATMEGA8-16AU (U1), por ejemplo, ADC6 (pin 1). Este punto también se conecta a un extremo de un resistor.
    • Conecta el otro extremo del resistor a GND.
  • VCC y GND:
    • Asegúrate de que VCC y GND estén correctamente conectados al ATMEGA8-16AU y a cualquier otro componente que requiera alimentación.
  • Programación del ATMEGA8-16AU:
    • Programa el ATMEGA8-16AU para leer el valor analógico desde la entrada seleccionada (ADC6 en este caso).
    • Establece un umbral de activación basado en la intensidad de la luz. Cuando la lectura de luz supere este umbral, realiza la acción deseada, como activar un LED, un relé, o en este caso, podría ser la señal para activar la cámara.
Ejemplo de conexión:
  • LDR a ADC6 (U1:ADC6).
  • Resistor: Conecta un lado a GND y el otro al mismo punto que el LDR en ADC6 (U1:ADC6).
Consideraciones de Software:
  • Configura el pin elegido para el ADC en modo de entrada.
  • Inicializa el ADC del ATMEGA8-16AU para leer valores analógicos.
  • Implementa una lógica para comparar el valor leído con un valor de umbral preestablecido. Cuando la luz es suficiente y el valor excede el umbral, realiza la acción deseada.
Notas adicionales:
  • La selección del valor del resistor en el divisor de voltaje depende de las especificaciones del LDR y de la sensibilidad deseada del sistema. Comúnmente, un valor de 10kΩ es un buen punto de partida.
  • Si requieres una respuesta más rápida o una mayor sensibilidad a los cambios de luz, podrías considerar el uso de un fotodiodo con un amplificador operacional.
Este es un diseño básico y puede ser ampliado o modificado para satisfacer necesidades específicas, como agregar filtros para descartar cambios bruscos de luz o emplear múltiples sensores para diferentes rangos de luz.
1y
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Timelapse Timer

Timelapse Timer
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Created
Last updated by adrian95
1 Contributor(s)
adrian95

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