Picaxe in programmable electronics

Picaxe in programmable electronics

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  • #137120
    Grizzly bear
    Participant
      @grizzlybear

      Hello Everyone,

      Various I.C's from 'Revolution Education', called Picaxe.

      Has anyone used this system?

      It comes in two forms, Logicator, (Flowcharts) used in schools, and Programming Editor which runs on Basic.

      **LINK**

      Regards, Bear..

      Apologies if this has been covered before.

      #22987
      Grizzly bear
      Participant
        @grizzlybear

        Programmable I.C,s.

        #137123
        Dave Daniels
        Participant
          @davedaniels93256

          Bear

          Depends what use you want to do with it.. I no longer use it Now on (HT)C and 16F PICs.

          For: Loader is cheap ( AXE027??), good dedicated forum, Very good documentation, Easy to learn.

          Against: Cripplingly slow for some applications due to the built-in interpreter.

          Dave

          #137124
          Ian P
          Participant
            @ianp

            The straight answer to your question is yes, I've used Picaxe chips in a several projects.

            Whilst they are promoted mostly for educational purposes they do find their way into lots of other fields, in fact there is one currently in space orbiting round us and merrily transmitting Morse!

            What had you in mind for engineering purposes?

            Ian P

            PS, Logicator is now part of the new editor

            #137143
            Grizzly bear
            Participant
              @grizzlybear

              Hi Everyone,

              Thanks for the replies. (Its had plenty of views).

              Ian P,

              Loosely associated with engineering, automatic venetian blinds via LDR, temperature control(On going) & servo motor (On going).

              These things require metal/plastic turning to complete the modifications, that's my story, and I'm sticking to it.

              Dave D,

              Can you give me a bit more info. What is(HT)C? I would like to get to grips with 16F PICs.

              Struggling with Basic

              Great forum

              Regards, Bear..

              #137147
              Ady1
              Participant
                @ady1

                Against: Cripplingly slow for some applications due to the built-in interpreter

                 

                A useful 16bit assembler resource is Ketman

                It's a visual learning tool and takes you from the basics

                You can combine assembler routines into BBC Basic for Windows

                This allows you to use a slower interpreted HLL for most stuff and the brute force of assembly for the numbercrunching bit

                So it HAS been done for intel chips

                 

                Edited By Ady1 on 06/12/2013 11:51:54

                #137154
                Ian P
                Participant
                  @ianp
                  Posted by Dave Daniels on 05/12/2013 21:55:48:

                  Bear

                  Depends what use you want to do with it.. I no longer use it Now on (HT)C and 16F PICs.

                  For: Loader is cheap ( AXE027??), good dedicated forum, Very good documentation, Easy to learn.

                  Against: Cripplingly slow for some applications due to the built-in interpreter.

                  Dave

                  Cripplingly slow is over dramatising things a bit! Yes it is slow compared to its native PIC but nobody would use a Picaxe if they need a fast chip, nor would they programme in Basic.

                  The two of the best things about using a picaxe is the forum and the documentation. The regulars on the forum (including Rev Eds own staff) are really helpful and whilst they wont actually write the code for your application (because they want you to learn how to do it yourself) the examples and snippets they post can be really focussed and they have always solved my problems.

                  #137164
                  Grizzly bear
                  Participant
                    @grizzlybear

                    Hi Everyone,

                    Ady1,

                    I have looked at the BBC Basic, does it work for making constructive things, like my Venetian blind project.

                    I've zero interest in games, I could get interested in using the PC to operate something mechanical, like shopping or mowing the lawn.

                    Thanks for the input.

                    Back to Basics….

                    Regards, Bear..

                    #137182
                    Bazyle
                    Participant
                      @bazyle

                      Something similar but a bit more powerful than the Picaxe is the Kronos range.

                      #137184
                      Mark C
                      Participant
                        @markc

                        Why not stick with the microchip software? They can be used to make the hex code and then you just need to burn it to the pic. `The tech notes from arizona are very good and most include sample code that you can use wholesale for a number of jobs (functions).

                        Mark

                        #137190
                        Ian P
                        Participant
                          @ianp
                          Posted by Grizzly bear on 06/12/2013 17:08:06:

                          Hi Everyone,

                          Ady1,

                          I have looked at the BBC Basic, does it work for making constructive things, like my Venetian blind project.

                          I've zero interest in games, I could get interested in using the PC to operate something mechanical, like shopping or mowing the lawn.

                          Thanks for the input.

                          Back to Basics….

                          Regards, Bear..

                          Bear

                          I have no connection with Revolution Education (No axe to grind either!) but for the sort of things you have mentioned I don't know of anything more appropriate than Picaxe (or 'Stamp' chips.

                          There is a range of (really low cost) development boards, various 'shields', and all you need to programme it is a serial cable. The documentation includes really simple examples of how to connect switches, LEDs, potentiometers etc, from which you can then progress to real life sensors and LCD text displays (which only uses one pin of the chip).

                          From what you have said about yourself and what you want to do, going to machine code or using a chip that need a programmer would be a steep learning step.

                          My 2p

                          Ian P

                          PS, The bulk of projects that Picaxe's are used for, are for controlling things, I have not seen a Venetian blind controller but I have seen one for curtains. 

                           

                           

                           

                           

                          Edited By Ian Phillips on 06/12/2013 20:21:02

                          #137204
                          Ady1
                          Participant
                            @ady1

                            I've zero interest in games, I could get interested in using the PC to operate something mechanical, like shopping or mowing the lawn.

                            BBC Basic was used for the Boxford 125 TCL (training computer lathe) so it has been used for control purposes in the past

                            I've never been an automation dood, I prefer math stuff, but there may be a modern controller route

                            #137207
                            Ady1
                            Participant
                              @ady1

                              Searched googlie for -controller by bbc basic- and got this guy

                              Using BBC BASIC for Windows
                              with Velleman's K8055N/K8061 USB Interface Boards

                              video here

                              So there's stuff out there, if you look for it

                              #137228
                              Ian P
                              Participant
                                @ianp

                                Bear, couple of links here to give you ideas (Picaxe's controlling window blinds) 

                                Ian P

                                **LINK**

                                **LINK**

                                Edited By Ian Phillips on 07/12/2013 10:06:24

                                #137233
                                Les Jones 1
                                Participant
                                  @lesjones1

                                  Hi Bear,
                                  I have built two controllers that may be of interest to you. The first one controls a roller blind It uses a small geared motor which drives the end of the blind. There is a reflective optical sensor that senses 4 reflective markers on the end of the blind.It works by incrementing a counter when it is going up and decrementing the counter when it is going down. When it is first installed it is put in set up mode. In this mode. There buttons to raise and lower the blind and two to store the counter setting in the up and down positions. The blind is moved to the up position and the store up button is pressed. The same is done for the down position. The switch is then set from the set up position to the normal position. The unit is powered from a plug in timer which is set to switch the unit on for two minutes in the morning and two minutes in the evening. It remembers which way it last moved so if it is down it moves up and vice versa. If there was a power cut during either of the two minute power on periods is would get out of step.
                                  The other controls a pair of curtains. It does not use limit switches but senses the motor current. when the curtain reaches the end of its travel the motor is stalled causing it to draw more current than a preset value. This causes the power to the motor to be switched off. It also has a timer which only allows the motor to run for about a minute in case the over current detection fails. (Or the drive cord to the curtains breaks.) It is controlled by a plug in timer in the same way as the roller blind. Let me know if you would like details of the designs. They both us a PIC16F84 microcontroller.
                                  There are also the Arduino boards (Which use Atmel chips and are programmed in "C" ) And the Texas MPS430 Launchpad kits which are quite cheap.(Less than £10.00) that may be of interest to you.

                                  Les.

                                  #137269
                                  Sub Mandrel
                                  Participant
                                    @submandrel

                                    Atmel AVR meets BBC BASIC.

                                    This is MK1, MK2 is rather more sophisticated.

                                    Neil

                                    AVR Computer Display

                                    AVR Computer

                                    #137272
                                    Grizzly bear
                                    Participant
                                      @grizzlybear

                                      Hi everyone,

                                      Thanks again to all that have replied.

                                      The venetian blind controller, I have two up and running. These are with picaxe 08M2 IC's, they have replaced the previous versions that were built using Cmos IC's.

                                      Picaxe, I was using the Flowchart method, but when you request help from the Picaxe forum, everyone only speaks Basic.

                                      So, I would like to get to grips with Basic, I'm happy with Picaxe, I was asking if there was anything better/easier.

                                      Have downloaded the latest Picaxe Editor Beta. Now my USB programming cable doesn't know that it's connected to Com1, Says Com8 not connected . ( Running Win7).

                                      Regards, Bear..

                                      #137432
                                      Trevor Wright
                                      Participant
                                        @trevorwright62541

                                        For me the picaxe is the best thing since sliced bread……I am a complete numpty when it comes to electronics but have built control circuits for relays, led's, timers and even dc motor speed control.

                                        The electronic bods on here baffle me with jargon and will say how picaxe is rubbish…and it probably is….but if you like your circuits to be like plumbing then you cannot fault it.

                                        Grizzly, can't remember how but you can swap the com ports manually.

                                        Picaxe – 2 thumbs up from the numpty's of this world.

                                        Trevor

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