Recent content by KrisDong

  1. K

    DIY Arduino Power Supply Shield with 3.3v, 5v and 12v Output Options

    When developing electronic projects, the power supply is one of the most important part of whole project and there is always need of multiple output voltage power supply. This is because different sensors need different input voltage and current to run efficiently. In this scenario, a power...
  2. K

    Digital Wall Clock on PCB using AVR Microcontroller Atmega16 and DS3231 RTC

    Every digital clock has a crystal inside it to keep track of time. This crystal is not only present in the clock but also present in all computing real-time systems. This crystal generates clock pulses, which is needed for timing calculations. Although there are some other ways to get clock...
  3. K

    PCBGOGO after-sale service review

    The board is made very precisely, it's clean and very pleasant to touch. Markings on the silkscreen layer are very good readable. Soldering does not cause trouble, tin adheres very well to soldering points with a small amount of flux. It is also worth mentioning that the PCB is very robust to...
  4. K

    PCB manufacturing sites - work in progress

    PCBGOGO not only in quick-turn PCB prototype and PCB assembly, but also medium and small volume PCB fabrication. We have three factories, established over 17,000 square meters; fully compliant with the ISO 9001:2008 quality management system, UL certified and committed to adhering to the...
  5. K

    the peppermill overdrive

    Hello guys, Another 1590B marvelous pedal effect - the peppermill overdrive (original concept found on #runoffgroove ). Looks pretty much the same as CMOS Fuzz (minimalistic raw metal design) but shines red instead of blue. In case someone is wondering I'm not changing my main coure from...
  6. K

    Does this cheap PCB service have a quality supports?

    I ordered some PCBs at PCBGOGO. They are a manufacturer of small and medium-sized batches in China. I received the board on the third day after I placed the order. To be honest, this's very fast.And they also have “Turnkey” service. https://www.pcbgogo.com?code=t
  7. K

    Comments on a metronome schematic and board?

    I've been working on metronome based on the Atmega328P and the Arduino language, although using a discreet microcontroller chip. It has six high brightness LEDs to indicate the beats, a buzzer, OLED display, some push buttons to control the thing, some more indicator LEDs and a 3,7 V LiPo...
  8. K

    Did I design this right?

    Hello, I've been working on designing a custom PCB for a custom mech keyboard, and I have no clue if I did it right. I have zero experience doing anything like this, and worked following a guide online mostly. Did I wire it correctly, even if it is messy? Did I do some really big mistake? Here...
  9. K

    Digital Compass using Arduino and HMC5883L Magnetometer

    Since the sensor could indicate the geo-graphic North, South, East and West, we humans could also use it at times when required.  So in this article let us try to understand how Magnetometer sensor works and how to interface it with a microcontroller like Arduino. Here we will build a cool...
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