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  1. CcanDo

    Tracking the emitter

    I appreciate you guys thinking through this. I've worked with several of the big names puzzling this together. The deeper I get, the more it becomes the "Holy Grail". DJI took a hard look at solving for the emitter going one way, while the receiver goes the opposite direction. DJI could benefit...
  2. CcanDo

    Tracking the emitter

    Doppler, as I know it, is great, especially for long range uncluttered applications. However, it may get confused as the distance shortens down to 1 meter,(propagation radiation) compounded by bounce. By inserting a ping on the carrier and adjusting the ping Hz. as the distance decreases...
  3. CcanDo

    Tracking the emitter

    Antennas on a turntable is a good choice of words, though another description includes a servo motor drive that rotates the small form factor antenna (s) assembly to create equal received signal strength on each side of the boom. Outdoors, the solution is much easier, indoors, GPS has...
  4. CcanDo

    Tracking the emitter

    Some may recall a technology known as DF Steer, somewhat inverse of ADF (Automatic Direction Finding). Logically, DF Steer Equipment has been mothballed, but finding it is another matter. Optionally, finding the DF Steer engineer garu, or manufacture would be helpful. The application is near...
  5. CcanDo

    Sourcing development or product, Servo control Pan/Tilt 2.4 GHz antenna

    Both the antenna carrier and target may travel in opposite directions, each up to a maximum speed of 25'/s. (16 MPH), and/or in synchronization with each other. The antenna will rotate only 180* from the X axis. (90* left-90* right of a right angle tangent from X) The scheme may be complimented...
  6. CcanDo

    Sourcing development or product, Servo control Pan/Tilt 2.4 GHz antenna

    The device BOM will include two of our proprietary 8 Embit rolling custom code 802.15.4 transceivers. One transceiver will be attached to the mobile target, the other will be located at the antenna. Range between the two will be from antenna base to 200 feet LOS. The antenna will then pan/tilt...
  7. CcanDo

    802.15.4 mesh connect board assembly

    Greg ? or, close ?
  8. CcanDo

    802.15.4 mesh connect board assembly

    Yes, the tech is installing the headers correctly. I know that was a reach. The latest, those that would not load, will load IF you power the board w/ 9 VDC battery (3.0 VDC after the VR). Then the board will work, but only sparadicly. As you may know, the user instructions insist the program...
  9. CcanDo

    802.15.4 mesh connect board assembly

    Thank's Guys, Down-load protocol goes from the PC to the CEL dongle, to a conductor ribbon, w/a female header on the end. For security, the ribbon conductors were loto flipped on the header. The daughter board schematic was configured to match the flipped header. Care was taken in assembling...
  10. CcanDo

    802.15.4 mesh connect board assembly

    Since posting the question, the simplest solution to answer your questions and more of our own, locate a programming fixture that will hold the module. The module has an embedded 8051 PIC, C code WILL BE loaded on the 8051, before being soldered onto the board. (presently, protocol has the...
  11. CcanDo

    Motor Driven Potentiometer

    The basic spec. needed is a cross to the Bourns PRM162 series, motor driven ptentiometer. The model is available from Mouser and Digi-Key. However, not in needed ohm values. The two ohm values needed are 500K and 10K. RF is the primary control W/user friendly, manual control available. The...
  12. CcanDo

    802.15.4 mesh connect board assembly

    We need help finding an assembly solution. The RF module includes a Uart. The present design is REV 4A, hardware, REV 32, C code. The RX side is found to perform. The TX side is a different part number and has a 20% failure ratio. The Board assembly has been attempted in house and by 4 seperate...
  13. CcanDo

    SMT Equipment Needed...Proto Vision PIP w/remote micro, Reflow Oven

    The burglars got our SMT, Proto-vision PIP w/remote microscope, Good SMT soldering equipment, bins,tweezers, flux etc. Maybe someone knows of GOOD equipment laying around or suggestions on to-days new package deals.
  14. CcanDo

    Best Plc or Bus value

    What is the present supplier of choice, PlC or Bus. Programming to be in C++ or Ladder logic. Quadrature encoder capable, on board 120/240 VAC - 50/60 Hz, dual high speed counters, relay or solid state, small to medium capacity.
  15. CcanDo

    Roots 14/1671 supercharger bypass/blow off valve

    Spot On, Mate ! Alloy for the flywheel should end in 30 or 40 billet. Sizing is subject to Cu.In. and torque/horsepower. Blower or not is a consideration but not critical. Your correct about acceleration. However, the props are S/S surfacing 4, 5 or 6 blade lab finished Cleavers. Hard...
  16. CcanDo

    anti galling tips..on ss to ss press fit

    Heat Part-Chill Part ??
  17. CcanDo

    Roots 14/1671 supercharger bypass/blow off valve

    Pat, IMHO, "Baseline" starts with the flywheel. The flywheel becomes a fuse link between the crank and tip of the prop. We have stumbled onto effects that support the opinion. Such as why lighter outdrives break. The light drive is forced to absorb inertia from not only the crank but also...
  18. CcanDo

    Roots 14/1671 supercharger bypass/blow off valve

    IMHO, the bigger horsepower engines are an extreme duty application. While lazy throttle response may be considered acceptable, it is not ideal. Beyond all is durability. Factors we consider relative include initial compression, crank to rod ratio, flywheel weight vs. horsepower, water flow...
  19. CcanDo

    Roots 14/1671 supercharger bypass/blow off valve

    Interesting, We'll call it the "Force System", some application may use a combination of screw and roots better than others. However,as you know, people have been tinkering with a hybrid combo for some time. Detroit diesel with their 92 series, turbo on top of the roots, VW and etc. Somewhere in...
  20. CcanDo

    Roots 14/1671 supercharger bypass/blow off valve

    Pat, I'm working on a response to your suggestions. Meanwhile, your comment RE; John Force sparks this, roots rotors at one case end and a screw at the other. As engine CU. In. consumes available roots boost the screw is charging and coming "up" to help the roots. Theory: Design creates...

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