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    Batch programming tool

    Hi forumites, I remember being mentioned here a tool for batch programming which requires only some pads on the pcb and the tool works by pressing the contacts on the pads. I think the brand is 3M but I am not sure. I know is quite a vague description and this is a long shot but can anyone...
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    Timer interrupt

    The following program should interrupt every 1 second and toggle an LED. However it does not. The board used is AXE401 with an 28x2 [version B.3]. Am I missing something about interrupts? #picaxe 28X2 #no_data #no_table setfreq M8 ' HARDWARE DEFINITITIONS...
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    GLCD - Svejklabs

    I received an email this morning with a question regarding the picaxe graphic LCD from my website. The reply could not be delivered as email address is possibly wrong. I'll take my chances here with the hope the recipient is a forumite. Message: Hello please I need help with writing to...
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    08M2 Temperature sensing with MCP9700

    A good alternative to DS18B20 temperature sensor is MCP9700. It costs just a fraction of the first one and gives out very good results. However it doesn't seem to get much attention so here is an introduction.
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    Syntax parser (small) bug

    This code: if b0 = 1 then b1 = 1 end else b1= 0 endif passes the syntax check and works ok in silicon. However not exactly what it should mean. Also, dirsb = value passes the syntax on an 08M2 where only port C is available. PE version 5-5-1. Regards, Svejk
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    Programming Editor version 6 Beta preview

    I managed to sneak a peek at PE version 6, see attached scren grab.
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    Soldering

    Maybe a bit off topic but I'm too excited not to share. DFN10, 3x3 mm package. Etched and soldered. Pictured with the tip of a fine ball pen.
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    08M2 and pin C.3 as output

    If the need arises the pin C.3 (marked as input only) on 08M2 [and maybe other Picaxes] may be used as an output. The setup involves a fet and a pull-down resistor as shown attached. The 1M resistor pulls the input to ground. Enabling the pullup for C.3 will make the pin go high, activating the...
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    The PCB layout

    Here is what I think it should look like. The switch, the AAAx4 battery holter and pins on top an the IC and discreetes on the bottom side.
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    The concept and schematics

    The basic concept around this bot revolves is the ease of interfacing sensors and drivers (motors, servos, etc). The basic ideea is that every sensor requires, at least in part, some sort of power and will provide in turn some sort of output, be it digital or analogue. This holds true for most...
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    The anabasis

    The anabasis of Picaxe BOT. I'll post here the schematics, artwork, trials, sensors interfacing etc.
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    test

    test
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    $20 08m Bot

    Finally, I think I've finished my quest to make a ~$20 (NZD) picaxe bot. This version uses 08M (08M2 in transit) and I think is easy to upgrade to 14M2 to provide more I/O. For motion I've used 9g servos modified for continous rotation (from e**y), and the "grey scale" sensor uses photodiodes...
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    Just another test

    Simplicity is a solved complexity. C. Brancusi
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    Proportional-Derivative controller with Picaxe 08M

    Recently I had the opportunity to play with PID Controllers and I managed to make a PD Controller with a Picaxe 08M. I'm sharing with the hope that it will find some use for someone. The setup is build on a AXE021, Picaxe-08 Proto Board using minimal components. A schematic is attached as well...
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    Optocoupler - sanity check please

    I'm a little confused with use of a SFH618-A2 optocouplers so please bear with me. What the 47R does in the circuit ilustrated in the picture? Would it limit the current for the voltage that I'm monitoring [10V]? That would give me about 213 mA and I'm not confortable with that. Should be...
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    Picaxe 14M 6 bit Digital to Analog Converter

    An inexpensive way to achieve a Digital to Analog Converter (DAC) with a Picaxe 14M. This uses R-2R resistor ladder. The tolerance of resistors is important, the more accurate, the better the results are. I've used 100/200 ohms resitors 1% tolerance (quite common, out of the junk box). Test...
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    bptr simulation bug

    The assignment @bptr = <value> does not simulate correctly in PE v 5.3.1 This code #picaxe 28x2 #no_data #no_table pause 500 for bptr = 0 to 9 @bptr = bptr next sertxd (#b0, #b1, #b2, #b3, #b4, #b5, #b6, #b7, #b8, #b9) do:loop produces "0000000000" in simulator. Works ok in silicon...
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    Graphic LCD

    In an attempt to give a little back to the Picaxe community, from which I’ve learnt a lot, I’m releasing my Graphic LCD routines as a completion of the 7 segment and alphanumeric LCD displays routines given here by more senior members. Main features: user generated fontsets and images...
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    Programming Editor wish

    The collapsing block in PE is a great feature. However when a file is opened all blocks are collapsed by default. The same collapsing occurs when the programm is simulated. I know it won't be easy [but it's not impossible] to make PE to remember which blocks were collapsed and return to that...
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