Monitoring Mains : Microcontrollers

This will be the first part of a larger  project  that will include other friends that have collaborated  with me directly or indirectly this last year. It was in many ways, a funny and interesting project to follow. All schematics, codes and  results are free for use , please just  give  references to authors. USE CAUTION […]

“D” packets – USRP2

Recently, while playing with the USRP2 unit and a i3 processor  here ,I met  this unpleasant issue of packets dropping , the screen comes quickly saturated by the letter “D” when recording . From Ettus Network-based devices: The host does not back-pressure the receive stream. When the kernel’s socket buffer becomes full, it will drop […]

HP 5370B : 20 Picoseconds Time Interval Accuracy . A test with MTI 260 and Trimble OCXO’s

Time  has come to make some measure and  view the actual performance of some time and frequency standards that i’ve got here.In the market, there are many instruments that can perform this kind of job: frequency counters and time interval counters  for example. Since I can not afford   instruments such as the Microsemi  5120a, A7-MXU […]

EFRATOM M100 and DiviBoard

Recently i’ve found some great codes from Tom Van Baak (Leapsecond) and use them  as frequency dividers. You can find the *.hex and *.asm  here I’ve burned some PIC 12F675 using a PIC programmer to have some  CMOS TTL  frequencies for  various applications  One of them was to use the M100, a great military Rubidium […]