30w low voltage PWM controller

Advert

30w low voltage PWM controller

Home Forums Electronics in the Workshop 30w low voltage PWM controller

Viewing 5 posts - 26 through 30 (of 30 total)
  • Author
    Posts
  • #802202
    SillyOldDuffer
    Moderator
      @sillyoldduffer

      PICAXE is still going.   Has all the virtues and vices of an educational system:

      • for simple applications rather than complex
      • limited number of boards and add-on modules
      • quite expensive – the starter kit is about £50. Might be just what’s needed, or not.  Decide yourself!
      • interpreted, not compiled, so will on the slow side
      • only works with pic chips pre-loaded with the PICAXE interpreter
      • requires a special cable
      • programmed in a language that’s vaguely like BASIC.

      Example:

      for b1 = 0 to 63 ; start a loop
      sertxd(“The value of b1 is ”,#b1,13,10)
      pause 1000
      next b1 ; next loop

      Though the PIC chips and language are potent PICAXE is closed source.  That severely limits community support, so the number of add-ons is pitiful compared with Arduino and others.   The number of microcontrollers supported is small too – a subset of the PIC family, whereas the Arduino-IDE supports many different hobby and professional development microcontrollers – not just Arduino.  Here’s what the PICaxe forum says about Arduino vs PICAXE support .

      Chief selling point is the claim that PICAXE is simple:  certainly true in a classroom, but after that, I doubt it.   I suspect Bazyle is right about BBCMicroBit – it too is aimed at education, with an even simpler drag and drop load mechanism.    The raspberry Pico with Python is also drag and drop, well worth considering if you want a cheap powerful board and a modern language.  If Python performance isn’t good enough, or doesn’t support a module, Picos can be programmed in C/C++.   It’s not boxed in like PICAXE.

      Dave

       

       

      Advert
      #802205
      Robert Atkinson 2
      Participant
        @robertatkinson2

        The RaspberryPi Pico series are impressive but a bit overkill as a 555 replacement 🙂

        #802208
        duncan webster 1
        Participant
          @duncanwebster1

          555 has the great advantage of a much larger output current, 200mA if I recall correctly. It can be used for all sorts of things apart from timers, latching flip flop comes to mind

          #802212
          Robert Atkinson 2
          Participant
            @robertatkinson2

            PicBasicPro directly supports both software (any device any pin) and hardware (needs a pic with one or more PWM modules) PWM.The hardaware commend is:

            HPWM Channel, Dutycycle, Frequency

            The frequency is only limited by th clock frequency the PIC is clocked at.

            #802217
            Michael Gilligan
            Participant
              @michaelgilligan61133
              On duncan webster 1 Said:

              555 has the great advantage of a much larger output current, 200mA if I recall correctly. It can be used for all sorts of things apart from timers, latching flip flop comes to mind

              I should perhaps have mentioned … There is also a BB variant of that little 1803 module, with higher current rating, and a heatsink.

              MichaelG.

            Viewing 5 posts - 26 through 30 (of 30 total)
            • Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

            Advert

            Latest Replies

            Viewing 25 topics - 1 through 25 (of 25 total)
            Viewing 25 topics - 1 through 25 (of 25 total)

            View full reply list.

            Advert

            Newsletter Sign-up