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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Mosaic

  1. Mosaic

    Desulfator Engine, Heavy duty, DIY, Overnight results.

    Duty cycle is variable to throttle the overall current delivery to match battery size to pulse strength.
  2. Mosaic

    LED polarity went wrong in PCBA FAbrication

    Actually, the PCBA manufacturer...has admitted their mistake. They noted the silk screen instead of the actual part orientation when setting up the pick and place. run. They will reimburse for the re-work.
  3. Mosaic

    Higher Voltage: Fool Your Alternator?

    I respect mike's opinion a lot... but i have regenerated batteries to 75% of AH ratings with that exact problem in an overnight fashion. Which then lasts another year or so. But I operate in a tropical environment so winter issues do not exist.
  4. Mosaic

    Loop() error on arduino Uno and all other arduino boards (solved)

    FYI all. I would get an error indicating that the loop() function was duplicated in a linked lib in the basic Blink program and get a compile error. Changing the loop() to loop1() would avoid the error allowing the upload to the Uno but the program never ran...even with a serial monitor...
  5. Mosaic

    LED polarity went wrong in PCBA FAbrication

    Oh, well, I got 200 LEDs to swap around... I have added explicit silk screened polarities for the LEDs to clarify the matter in the future. I thought it was an automated GERBER process into the pick and place....didn't realize human was in the way.
  6. Mosaic

    LED polarity went wrong in PCBA FAbrication

    Well a manual assembly is one thing...but for SMT PCBA...is it possible the EAGLECAD model of the LED can identify the polarity and this translates to the GERBER somehow? Something is curious though..based on the arrows for LED6 and 7 ..it appears that they SHOULD have been mounted with...
  7. Mosaic

    LED polarity went wrong in PCBA FAbrication

    Hi all...the 2 SMT 0805 LEDs on the red layer are in parallel but opposing polarities. They have a common 2.5V but are driven by a Low or Hi digital 5V signal to select which one lights. The thru hole LED placement is a DNP item which I have as a bicolor LED option. Now the PCBA manufacturer...
  8. Mosaic

    Proteus ISIS PIC 18F processor speed setting problem

    Ok figured it out. Needed to setup the following: OSC = INTOSCPLL, PLLDIV=2 . & IESO =ON config bits. Then setup the OSCCON to 8MHz and enable the PLLEN & INTSRC bits in OSCTUNE in the code. 83nS per instruction = 12MIPS @48Mhz.
  9. Mosaic

    Proteus ISIS PIC 18F processor speed setting problem

    Hello All: Using an 18F26J50, no matter what processor speed setting (processor properties) I try, it is running at 4Mhz. With a 16F886...it runs at any speed I set properly. Any advice on this?
  10. Mosaic

    WS2812B Protocol Idea

    One can always learn from the efficiency of K8LH's code. :) I am in the process of writing ASM code for this application based on a 48Mhz 18F26J50. :nailbiting: The plan, so far, is to use the DMA SPI at a 333nS bit clock which allows me to aggregate 2 bits out of the 24 bits per LED into 1 SPI...
  11. Mosaic

    PIC 18F26j50 include file for MPASMwin?

    Ok, somehow windows 7 search did not turn this up in the Labcenter Program directory. I renamed it with a .txt extension to post here... I found it by digging into the Proteus menu : Source-Code generation Tools
  12. Mosaic

    PIC 18F26j50 include file for MPASMwin?

    Hi All: I am trying to start a proteus ISIS project with the 18F26j50 chip...but I can't find the header (.inc) file for it. Can anyone assist? having a rough time figuring the config directives without the inc file.
  13. Mosaic

    The scoop on PCB layout software

    i still use version 6.6.......has all u need really
  14. Mosaic

    Tiebel tankless water heater is cold

    yes, thats right. The replacement was mounted just below the heater on the intake line as the OEM part is custom fit and is best left alone. Just connect the wiring
  15. Mosaic

    Looking for 20cm colored F2F jumpers for 0.1" type headers

    I'm asking my PCBA supplier about sourcing the jumpers. I also found this which buries Pololu in cost effective pricing as they sell 1 crimp end 1x3 plastic housing for 0.79. Ordered 3 sets. **broken link removed** Pololu price for 50, 6" jumpers is 12.50, or about a quarter each, which I find...

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