Search found 326 matches
- Mon Jan 05, 2015 4:36 pm
- Forum: General Discussion
- Topic: color organ help...
- Replies: 39
- Views: 48146
Re: color organ help...
OK I changed the code back to include the "pulsin" command for each LED and a few other changes to expand the frequency coverage for each band. This will allow multiple LEDs to come on at the same time. I have included a preamp circuit I use that will help as well. The preamp has a gain of...
- Sun Jan 04, 2015 6:03 pm
- Forum: General Discussion
- Topic: color organ help...
- Replies: 39
- Views: 48146
Re: color organ help...
Well it won't because the "pulsin" command is reading the music at random. However with the proper level of input voltage you should get decent response on all four LEDs .it still does not seem to work as good as a analog type color organ
Steve G
- Thu Jan 01, 2015 5:06 pm
- Forum: General Discussion
- Topic: color organ help...
- Replies: 39
- Views: 48146
Re: color organ help...
Dac, first of all download this new program. then try the test mode below. red: pulsin C.3, 1,w0 if w0 > 68 then high C.0 endif green: if w0 > 27 and w0 < 69 then high C.1 endif blue: if w0 > 11 and w0 < 27 then high C.2 endif yellow: if w0 < 12 and w0 > 1 then high C.4 endif pause 100 let pinsC = %...
- Wed Dec 31, 2014 10:36 pm
- Forum: General Discussion
- Topic: color organ help...
- Replies: 39
- Views: 48146
Re: color organ help...
anything stronger would cause the audio to be badly distorted The pulsin command is actually better suited for square waves so any audio signal that's over driven or distorted should not make any difference. Go ahead and crank up the volume but do not exceed the value of power supply voltage. Happy...
- Tue Dec 23, 2014 1:33 pm
- Forum: General Discussion
- Topic: i need help with a display issues with a old tuner
- Replies: 18
- Views: 24372
Re: i need help with a display issues with a old tuner
dac,
Did you check the 7.8 volts on the frequency counter chip? According to the data sheet the display module is a common cathode type with pin #1 connected to ground. The drive voltage is from that chip.
Steve G
Did you check the 7.8 volts on the frequency counter chip? According to the data sheet the display module is a common cathode type with pin #1 connected to ground. The drive voltage is from that chip.
Steve G
- Sat Dec 06, 2014 6:34 pm
- Forum: General Discussion
- Topic: Some help with guitar active controls OpAmp circuit
- Replies: 5
- Views: 10925
Re: Some help with guitar active controls OpAmp circuit
Your welcome, glad you found the problem
Steve G.
Steve G.
- Fri Dec 05, 2014 6:16 am
- Forum: General Discussion
- Topic: Some help with guitar active controls OpAmp circuit
- Replies: 5
- Views: 10925
Re: Some help with guitar active controls OpAmp circuit
If it was clipping would I expect to hear serious distortion, as opposed to a complete fade/loss of output? Yes you would. Something else to consider, does it cut out regardless of where the controls are set? From the circuit description the gain is flat with the controls at midpoint. Should easily...
- Thu Dec 04, 2014 4:56 pm
- Forum: General Discussion
- Topic: Some help with guitar active controls OpAmp circuit
- Replies: 5
- Views: 10925
Re: Some help with guitar active controls OpAmp circuit
I've read the article and seen the schematic. One volt input should not be a problem, in fact the maximum input is limited to the supply voltage which in this case is + and - 9 volts. The design seems to be able to handle a 1 volt input with out clipping at full boost. I suppose I would check the ba...
- Mon Nov 24, 2014 1:47 pm
- Forum: Reader Projects
- Topic: 40-pulses Monoshot (200ms/1A) design_help
- Replies: 1
- Views: 13824
Re: 40-pulses Monoshot (200ms/1A) design_help
vinod,
Whatever happened to that monoshot circuit we worked on back in early 2013 ? Should be able to use the same design with a 24 volt power supply and a beefed up output.
Steve G
Whatever happened to that monoshot circuit we worked on back in early 2013 ? Should be able to use the same design with a 24 volt power supply and a beefed up output.
Steve G
- Sat Nov 15, 2014 5:56 am
- Forum: General Discussion
- Topic: Mini variable Inverter?
- Replies: 20
- Views: 8922
Re: Mini variable Inverter?
Try adding resistor R3 as shown, that should protect the diodes and darlington base circuit. Maybe a 1K for starters
Steve G
Steve G
- Fri Nov 14, 2014 3:50 pm
- Forum: General Discussion
- Topic: Mini variable Inverter?
- Replies: 20
- Views: 8922
Re: Mini variable Inverter?
I think going with a variac is the best option. Like this one.
http://www.automationtechnologiesinc.co ... red-variac
Steve G
http://www.automationtechnologiesinc.co ... red-variac
Steve G
- Thu Nov 13, 2014 6:56 pm
- Forum: General Discussion
- Topic: Mini variable Inverter?
- Replies: 20
- Views: 8922
Re: Mini variable Inverter?
[quote Ignoring losses, a 3VDC source would need to supply 150W also and that amounts to 50A peak source current. with losses it may approach 60A. a 12V car battery would fare better with plenty of source current for a while with a modest 13A load.][/quote] I think the OP means he would be using the...
- Tue Nov 11, 2014 7:13 pm
- Forum: General Discussion
- Topic: Propane fuel tank monitor gauge.
- Replies: 6
- Views: 3990
- Tue Nov 11, 2014 4:06 pm
- Forum: General Discussion
- Topic: Propane fuel tank monitor gauge.
- Replies: 6
- Views: 3990
Re: Propane fuel tank monitor gauge.
From the PDF on the the unit the sensor is a ROCHESTER GAUGES R3D SENSOR. It operates from 3.5 to 6 volt DC with an analog output voltage depending on the supply voltage and tank level. Simple 3 wire device could be connected directly to a voltmeter as a wired monitor. Only needs a supply voltage. S...
- Wed Nov 05, 2014 9:01 pm
- Forum: General Discussion
- Topic: color organ help...
- Replies: 39
- Views: 48146
Re: color organ help...
Each LED is driven by a band of frequencies, somewhere in this neighborhood if the signal is a sine wave Red: 20 to 600hz Green: 600 to 1350hz Yellow: 1350 to 3500hz Blue: 3500 to 19000hz It's normal for the LEDs to fluctuate. The way the code is written the chip is acting like a scanner. It checks ...