Recent content by Jouellet

  1. Jouellet

    Advice needed for an 100W LED

    OK, I bought a couple of 100W LEDs. They have the following specs:: DC32-36V 3500mA Since I want to use them in my truck, I also bought a couple of 150W, DC-DC converter, 10-32V-in/12-35V-out. Now, I'm pretty sure that if I connect them directly to the output of the converter, that's not the...
  2. Jouellet

    T-1000 LED controller - Anyone know of something similar ?

    Hey folks, I want to control a bunch of WS2812B LEDs: 384 LEDs to be precise. I found that the T1000S can do that, but not exactly what I need: It has an SD card, that stores the pattern (actually, up to 16 patterns or programs) , and by pressing a button, you switch from one program to the...
  3. Jouellet

    Unable to burn Bootloader in Atmega 328P-PU for Arduino Uno

    don't forget about the crystal. Make sure you have a Atmega328P-PU, not Atmega328-PU
  4. Jouellet

    can't figure what the hell is wrong !

    Steve: Went thru the note and examples that I've used when "trying" to design the fix.. in the example that I've used, the guy shows the circuit that I did: He mentioned that R2 was not essential, so I did to put it. But NOWHERE did he mentioned that switching it OFF was done by applying close...
  5. Jouellet

    can't figure what the hell is wrong !

    Steve: it goes...was going to +12V...(boards ended up in the garbage tonight...) That's how things got messed up: I've connected all my LED strings to ground, instead of VCC , And I did not find a replacement that would be a perfect pin-to-pin fit for the ULN2003 I'll redo the boards, with...
  6. Jouellet

    can't figure what the hell is wrong !

    Bob, I agree with you: when I make circuit that have inputs, I always use a 10K resistor to ground. Always. But in this case, the output of the Arduino was intended to go directly to the input of the ULN2003. Since I screwed up with that part and corrected it (!!) with a custom transistor...
  7. Jouellet

    can't figure what the hell is wrong !

    Steve, When I press the button, I apply +5V to the base, via the 2.2K resistor. When I release it, no voltage is applied, therefore considered low. The current Arduino sketch (for testing) is going thru each output, putting them High for 1 second, then Low. If the theory about the High/Low vs...
  8. Jouellet

    can't figure what the hell is wrong !

    hold on ... Why is it working of the protoboard ? When 5V is applied, the LED are ON, when brought to 0, the LED are OFF.
  9. Jouellet

    can't figure what the hell is wrong !

    hi folks, working on something: it's a Seven Segment display, make with 10mm LEDs, driven by an Arduino. So far so good. The LEDs are in fact 3 x LED in serial, with a current limiting resistor, connected to ground. These are going to be powered from a 12 V source (no choice; LED are 3.2V x...
  10. Jouellet

    Attiny85 vs Pin 1 as an Input

    Hey ! working on something that will use an Attiny85. In a nut shell, I want to detect the presence of something, and via I2C, control 3 LEDs (R,G,B) So far, I have found most of my information, but still struggling with pin 1. My planned pin-out is as follow: 1- TCRT5000 sensor 2- Red LED...
  11. Jouellet

    Making a dancing light device

    google "MSGEQ7" and "schematic" You will get everything you need ! That how I got started with that chip ! You will even find sample sketches for the Arduino. Keep in mind that people will help you up to the point where it seems like you are not making you own research !!!
  12. Jouellet

    Making a dancing light device

    Why don't you consider the Arduino Nano ? They come with their own USB/Serial converter. You can get some "chinese" version, for 3US$ on Ebay ! Also, do some research on the "MSGEQ7" ; you might want to use that as well !
  13. Jouellet

    Thinking about opening an Electronic store: still worth it ?

    Hey ! I would like to get your feel about a project of mine. I live in Edmonton (Canada, population 1.2 million), and when it comes to find electronic components, there is very close to nothing available. There is one that is mostly industrial-oriented: no price on items, need an account...
  14. Jouellet

    Piezo sensor circuit

    That's what my target looks like :
  15. Jouellet

    Piezo sensor circuit

    I did something similar to that for a target system for Airsoft guns. I used a piezo that is connected directly to an Arduino Pro-Mini. The Piezo will generate a small spike that will drive an interupt in the Arduino's logic. I printed a casing for the Piezo (there are also a few LEDs) and...
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