Jump to content
Electronics-Lab.com Community


  • Content Count

  • Joined

  • Last visited

About jknightandkarr

  • Rank
    Advanced Member
  • Birthday 12/18/1980

Contact Methods

  • Website URL

Profile Information

  • Gender
  • Location

Recent Profile Visitors

4,657 profile views
  1. Ok will have to see if i can find anything on the mic for a part number. That should give a place to start. Joe Edit. Checked mic element, and not one single marking of anykind... don't even know who made the kareokie machine the mic came from. Looks cheap though. I doubt that my freq generator would help much, so I guess i will just replace the switch inside since it's broken and just use it as it is, till i can just buy a good one.
  2. I will have to see if i can find some software to test the mics db freq responce. First then. Thanks for this info. While i know some electronics, audio for me is uncharted territory... I have an analog oscilliscope, freq counter and cheap saleae knock off, wonder if any of those will help.. Joe
  3. I have a cheap mic, can't afford much right now. Was looking up mic specs for stuff in like the $100 range and saw that they have 20hz to 20khz. I am in the process of rebuilding the mic as i had to tear it appart to fix a broken switch issue. Also hoping the filter(s) get out alittle back ground noise.
  4. Well, not worried about this anymore. Friend gave me a set of TurtleBeach Earforce X12 headset. However I do need help with a microphone. I want to make a filter for a 20 Hz and 20 kHz filter. I got the values for a low pass filter and a high pass filter, but more checking out told me that just hooking one filter into the end of the other won't work. I found something about a band pass filter, which according to the math, am not skilled enough to figure out on my own. Any suggestions on filter(s) for my mic? Joe
  5. I just copied the whole section, didn't feel like editing. Speakers are those really small cheap over ear headphone/small toy looking speakers, I think they might be bad...they measure 30 ohms. I didn't think they had that much resistance on them. Probly simpler to just buy a new headset n say heck with it.. Joe
  6. I can answer the 2nd question for you, as I have 2 3d printers, both having heated beds. The heated beds are required when printing with some kinds of filament, such as ABS plastics. If the bed is not heated to a certain temp n kept at that temp the print adhision may fail totally or even warp your print(s). So the beds will be needed in some cercomstances. Hope this helps. I think as for the voltage, I think most are 12v DC, atleast mine are. Joe
  7. Ok, first I have a set of turtle beach ear force x11 gaming headset with the following specs: Headphones: - 40mm diameter speakers with neodymium magnet - Speaker Frequency Response: 30Hz - 20kHz, >120dB SPL @ 1kHz - Condenser Microphone Frequency Response: 50Hz - 15kHz - Cable length: 16 ft. (4.877m) - Weight: 6.4 oz. (233g) In-Line Amplifier: - Headphone Amplifier: Stereo DC-coupled, 35mW/ch, THD <1%, Frequency Response: DC - 30kHz - Mic mute switch - XBOX controller 2.5mm input jack - Maximum analog input level with volume control on maximum setting: 2Vpp
  8. I am in need of schematics / service manual for a Sanyo VWM-710 vcr. I got hit by a power surge and now its non-functional. Already checked fuse, its fine, so I need something to help me locate the issue, I am not seeing any obvious issues. I know I can fix it, just need some help. Thanks. Joe
  9. I hope this is the correct area, but I am looking for sources of bulk component supplies. The only one's that I know of are Digikey, Mouser and Jameco, 2 of the 3 of them have what I need but WAAAAAY too much, plus I don't need 250 or 400 or esp 800 count orders...... I need Blue 0.4" AlphaNumeric leds SMD or PTH don't matter, white would also work by just using a blue filter. Is there other sources of components. Radio Shack isn't even an option. Another requirement IS however a reliable source of them. I need multiples of 10 singles or 5 doubles, just as long as I have 10 digits. What I real
  10. Is this app still available? I can't goto the site at all. Joe
  11. Sorry for the delay in the reply, haven't been on in quite a while. To answer your question, I have 3 different microcontrollers, The Basic Stamp 2, Arduino Uno, and the Propeller Microcontrollers. So far planning on using the Propeller, so there's 32 I/O pins, but I am concidering using shift registers to run the LEDs. Digital Compass This link above is the compass I am trying to create. There's 4 larger leds arrays and the 4-10 segment bargraphs. I need the N/S n E/W LEDs to be able to light up for N, S, E, W, NE, NW, SE & SW, and the Bargrapgh LEDs Need to sequince up like
  12. I am trying to make this KITT's dash compass andi have the leds and using a microcontroller to power them but need help on how to wire them so i use the least amount of conponents possable. I thought of darlington transistor ic's but on the 4 10 led bargraph onesi think both anode n cathode will need darlington transistors. 4 1 for either common cathode or anode and 10 more for the other lead for make the patterns. I might be able to use 1 darlington transistor ic to make the yellow triangle leds work using just 4 i/o pins, but i think i need 14 for the red bargraps whats the best way to wire
  • Create New...