Search results

  1. L

    Controller for electric ATV with BLDC motor

    Hello all, I have a smallish electric ATV (Venom E-Grizzly) with a 48V 1500W, Hall sensored BLDC motor. This machine has IMO poor low speed control in that it starts abruptly and lunges forward to about 40% of the top speed i.e. there is no way to drive it slowly other than abrupt...
  2. L

    Do "X2" chips "multi-task"?

    Apologies if this has been discussed b/f but I've searched and cannot find an answer. I have read the docs on the new X2 micro-controllers and the program "slots" available seem to imply some sort of multitasking ability. To be more specific, if I have a "pause" or "count" instruction in a...
  3. L

    Interrupt OR?

    Have just added another interrupt to my program and realized that interrupts are ANDed before an interrupt is generated. I had assumed they would be ORed (which seems more logical to me) eg. generate an interrupt if pin0 *or* pin1 is high. The only way I can think of doing that is to...
  4. L

    Bug in Let/MIN statement?

    Have found that the following does not maintain the specified minimum value: x = x - 2 MIN 1 Successive executions of the instruction result in x = 5, 3, 1, 255, 253 etc. I suppose what is going on is that 255 is greater than 1 (there being no negative integers) so the condition is considered...
  5. L

    Non-inverting Driver Available

    Have just realized that the output driver chip (UNL2803A)that comes with the standard 18 pin project board inverts the output. Does anyone know of an equivalent chip (with same pinout) that does not invert? I plan to use this board to drive four power MOSFETS in a H-bridge circuit so, with...
  6. L

    Newbie Question

    Just getting familair with PICAXES and would like to use one to control blade pitch on a wind turbine (windmill). Was wondering if the infared input option will generate an interrupt (while the main program is running in the background)? TIA for any help... Laurie Forbes
Top