Maker Pro
Login Join Maker Pro
Or sign in with

Menu

Connect With Us

Network

Search results

  1. C

    Regulate from 12v to 3v?

    I'm working on a little project to wire up my garage door remote to trigger when I flash the high beams on my motorcycle. My garage door remote is a small fob containing a 3v coin battery (DL2023) and a single button. I've bridged the connections of the button, so it's always on now. The...
  2. C

    Grounding Question

    Hi, I have a newbie question about grounding. I bought a 5M LED strip that uses WS2812b drivers to control the LEDs. It's for use with an Arduino UNO controller. The strip uses a 3 wire setup: VCC, GND, and Data. If I connect VCC and GND to the power supply, and Data to the Arduino...
  3. C

    Can someone help me understand parallel current draw?

    Noob here. I'm trying to understand what's going on in these circuits, which I've drawn up to represent real-world circuits I've created: http://i.imgur.com/ZyyVPHO.png I have a 130R resistor wired to an LED. The ammeter shows 22.55mA. When I add a second LED in parallel, it goes to...
  4. C

    Is a voltage regulator always required?

    I'm wiring up an ATMEGA328P-PU to a breadboard. I've got a 5V 20A regulated switching power supply to provide power. Is there any argument for wanting a voltage regulator, as the supply is already regulated at 5V? I ask because looking at the circuit diagrams for this chip shows that...
  5. C

    How can I read and forward HDMI visual data?

    Recently, I built an Ambilight clone using an Arduino UNO, by following the Adalight tutorial from Adafruit.com. My friends love it, and a few have asked me to make them one. They don't have home theater PCs though. So, I had this idea that maybe I could build a device that has an HDMI input...
Top