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    I just do a design of lm386-based audio amplifier circuit

    You can add a decoupling capacitor. Sometimes, the output waveform can be clipped due to noise in the power supply. Adding a decoupling capacitor between the power supply and the ground can help reduce the noise and improve the output waveform.
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    I just do a design of lm386-based audio amplifier circuit

    I think it's not possible to give a good answer without knowing which specific DXP softaware you're using and what error you're facing.
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    Hall Sensor Bypass for Coffee Grinder

     Bypassing the Hall sensor is not recommended. You can check the manual for instructions on how to calibrate the sensor. 
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    holo projector

    For making a holo projector, you can follow this video:  https://www.youtube-nocookie.com/embed/QPM1LwEzzwU?feature=oembed You can also take a look here to know how to install an outdoor projector: https://www.theengineeringprojects.com/2018/09/how-to-install-outdoor-projector.html Y
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    Creating/making Music ICs

    Music ICs like UM66 are avaiable. However, you cannot customize them. UM66 can play only the music that is already set by the manufacturer. If you want to play something of your own choice, I think you can move to Arduino related projects. Using waveshare VS1053B music shield...
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    arduino atmega 328p on breadboard

    Good to know that it is working. I always used to bootload Atmega328P with a full fledged Arduino UNO board. Then I added the necessary crystal oscillator, capacitors and resistors along with the chip to the breadboard. Finally, I connected an FTDI module to upload code to the Atmega328P from my...
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    DIY - ARDUINO BASED CAR PARKING ASSISTANT

    I really like this circuit. Such a small and compact PCB. 
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    Graphical Temperature & Humidity Control Unit Using a Raspberry Pi Pico

    Thanks. I have just started using Pico. Will try this someday. 
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    DIY - PCB Christmas Forest

    Looks really good. PCBway did a very good PCB printing job as usual. 
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    30A AC Soft Starter (Inrush Current Limiter)

    Really useful product.
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    DIY Wireless Home Automation (Control and Monitoring)

    Thanks a lot for sharing. Most of the IoT devices that I have seen, use Raspberry Pi or ESP modules. This one looks different.  
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