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pll gps pps module
Thanks so much Sergio.
Now I understand why all the articles I read talk about "disciplinated", oscillator. Please let me know what was your numeric solution. The rb solution is the logical one but I imagine it isn´t cheap. I have found some GPS´s in the web with a 10 Mhz...
Last week bought an old HP5314A Counter, some times tun on normally, some times not. Looks like has a problem with the RESET circuit. I downloaded de service manual from Agilent´s page but it´s a photocopy and the circuit diagram is unreadable.
Please help me with the circuit diagram
Thanks in...
gpsdo
Thanks toona.
The Shera´s solution is very smart but uses parts almost impossible to find, like de DAC, really I´m looking for something simpler.
Thanks again
Hi friends.
I need to build a good frequency reference and am thinking about to lock the one hertz out (1 PPS) from an OEM GPS module to a good VCO (crystal) oscillator, but have no idea about how to manage that so low freq. with a PLL. The 1Hz reference is easy to obtain with some dividers...
Hi friends.
I´m looking for an idea to build a high precision frequency reference (standard) to be used to calibrate oscilloscopes and frequency meters. There are some ideas in the web about to use a GPS clock to obtain a ultra precise time reference, but I was unable to find a serious project...
software loses adc
Looking for a low count parts panel meter just foud this project. Can any of you let me know where the mistake is. Perhaps the author wrote down the wrong PIC name?, or the 16F84A has a hidden ADC?.
Today I was at a local elec parts and saw an ATMEL-PIC USB driven (it takes +b from the USB port) programmer. The programmer is made in Argentina and costs about 150 US$.
Have any of you an idea where to find something like that to be home-built?
Here is the WEB site from this guys...
programmable for design of moving display
Hi friends:
I´m looking for info about how to build a PIC based matrix sign (16x8 ?) to display "moving arrows", "warning words". Something like the "portable" signs installed in all roads when there is a deviation road or a warn about to reduce speed...
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