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2,89 v 0,3a ac sinyalim var bunu 5v dc ye getirmem gerek nasıl yapabilirm
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give me the rough idea on how to accomplish this project
2y
Sure! To help you accomplish the project of modifying a pre-existing ON-AIR board, I'll divide it into distinct tasks based on the project's key features:
-
Intensity Adjustment with Slider:
- Objective: Implement brightness control for the ON-AIR LED using a slider.
- Approach: A potentiometer (as a slider) can be connected to an ADC pin of a microcontroller or directly in a feedback loop to control a dimming circuit.
- Components: Potentiometer, ADC-enabled microcontroller, LED driver circuit.
-
Push Button for On/Off:
- Objective: Add a button to toggle the LED's state.
- Approach: Connect a push button to a GPIO pin configured with an interrupt to toggle the LED on and off.
- Components: Push button, debouncing capacitor/resistors, microcontroller.
-
USB-C Power:
- Objective: Power the board via USB-C.
- Approach: Use a USB-C connector and ensure necessary power management components for proper voltage and current management.
- Components: USB-C connector, voltage regulator/buck converter.
-
Single Buck Converter:
- Objective: Use a buck converter to efficiently power the LED and control circuitry.
- Approach: Integrate a buck converter circuit to step down the USB-C input voltage to the required levels.
- Components: Buck converter IC, inductors, capacitors, resistors.
-
Feedback Loop Control Using a Slider:
- Objective: Implement a feedback loop to adjust LED brightness using the slider.
- Approach: The slider's position is read via an ADC, and the value is used to adjust the output of the LED driver circuit.
- Components: Potentiometer, ADC-enabled microcontroller, feedback control circuitry.
-
Intensity Adjustment with Slider:
- Connect Potentiometer (Slider):Wiper to ADC pin of the microcontroller.
- Connect Potentiometer:One end to VCC and the other end to GND.
- Implement ADC reading in firmware to adjust PWM for LED brightness.
-
Push Button for On/Off:
- Connect Button:One end to VCC (through a pull-up resistor) and the other end to a GPIO pin of the microcontroller.
- Connect Button:Other end to GND.
- Configure the GPIO pin as an input and set up an interrupt service routine (ISR) for toggling the LED state in firmware.
-
USB-C Power:
- Connect USB-C connector:VBUS to the input of the buck converter.
- Connect USB-C connector:GND to the system ground.
- Implement necessary components to meet USB-C specifications and protection.
-
Single Buck Converter:
- Connect Buck Converter IC:VIN to USB-C:VBUS.
- Connect Buck Converter IC:VOUT to the LED driver and microcontroller power input (VCC).
- Design the buck converter circuit including choosing appropriate inductors, capacitors, and resistors per the datasheet.
-
Feedback Loop Control Using a Slider:
- Connect Potentiometer (Slider):Wiper to ADC pin of the microcontroller.
- Use the ADC reading to implement a feedback control algorithm in firmware to adjust the output of the LED driver.
- Slider to Microcontroller: Connect Pot1:Wiper to MCU:ADC1, Pot1:One end to VCC, and Pot1:Other end to GND.
- Button to Microcontroller: Connect Btn1:One end to VCC (through a pull-up resistor), Btn1:Other end to MCU:GPIO11, and Btn1:Other end to GND.
- USB-C to Buck Converter: Connect USB-C:VBUS to Buck Converter:VIN and USB-C:GND to Buck Converter:GND.
- Buck Converter to System: Connect Buck Converter:VOUT to LED Driver:VCC and MCU:VCC, and Buck Converter:GND to System GND.
Would you like detailed schematics of any specific part of the project?
2y
2
3V3
L3
Inductance
Inductance
C1
Capacitance
10uF
P3
Vin
Vin
R1
Resistance
10kΩ
C3
Capacitance
10uF
3V3
J2
En
C2
Capacitance
1nF
C4
Capacitance
10uF
En
P4
Part Type
Terminal
IC1
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Buck Boost Converter
A Buck-Boost converter that can be powered from a Li-ion battery and output 3.3 V @ 500 mA.
Powered by the TPS63051YFFR and in the same package as a standard Adafruit buck converter.
Input voltage range: 2.5 V to 5.5 V
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $1.12 |
Digi-Key | $1.21 |
LCSC | $0.98 |
Mouser | $1.56 |
Verical | $0.87 |
Controls
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