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  1. J

    analog output

    Morning all, I have a word variable that rises from 0 to approx 500, then resets to 0, then starts incrementing again. I want to output this var as an analog voltage, say 0 - 5v, (this is not critical, it could be 1 - 4.8v, or any thing really). This voltage is going to a voltage data logger...
  2. J

    Counting pulses

    I have trawled all the counting threads etc but can't find exactly what I want to do, though some are very close but way over my head for adaption. I have a water encoder, this device sends out a string of pulses when running. The flow and pressure is almost constant and so makes things a little...
  3. J

    433 wireless link

    Hi all Am wishing to set up a simple 433 wireless link reading two temperature sensors (possibly thermistors or DS18B20). I will use Dorji DRA887TX / DRA886RX combo. These are "new" ones Stan came across recently. I would just watch these values on PC (serin) initially .(might look at Modcom...
  4. J

    touch not working

    Have just purchased two 18m2 chips. I cannot seem to get the touch function working. I am just using debug to see a value, but stuck fast on "0". I have used touch and touch16, both see nothing. I have tried other inputs with the same results. I can read ADC on debug just using a switch, eg off...
  5. J

    gsm module help

    Do you think this GSM would interface OK with picaxe ? In particular for simcards in NZ (Manuka?) All I want to do, is use it to send a TXT message. (from picaxe) Ta Jeff http://probots.co.in/index.php?main_page=product_info&cPath=77&products_id=326...
  6. J

    baud rate

    Can the baud rate of an old 28x be changed via prog or can it only be done with another "flavour" resonator. Would like to acheive 9600 for sertxd stuff.
  7. J

    modcom interface

    Looking for help with the modcom interface.(Have it installed and running OK). Can anyone help me with getting a simple "on/off" display working. I can cope with the graphics side of it, but it's that underlying "stuff" I'm having the grief with. In the bottom LH corner of modcom I can see...
  8. J

    Infra code adjustment

    I have an IR "pair" : 08m Rxer and 08m Txer. These are using the attached code and working great. Each button push turns on a led, this then stays "latched" until another button is pushed, which then turns on another led in it's place. After any button push one led always remains on. What I...
  9. J

    infrain or infrain2

    I wish to use an old sony remote IR Txer, (I think it was an old multidisc CD player), in conjunction with an 08m Rxer. (I only want to get 2 buttons working on txer and don't care which two). Should I use infrain or infrain2 on the Rxer, I've looked at manual 2 but I still can't quite decide...
  10. J

    Long delays/pauses

    Hi all Any thoughts on the best way of implementing a 48hr on - 5hr off repetitive type cycle. This does not have to have any great accuracy, +/- 10mins would be good enough. The picaxe does not have to go "sleep". i.e. power consumption not a problem. Ta Jeff
  11. J

    74HC595 replacement?

    Firstly thanks to replies regarding "scaling ADC", problem solved and all working OK. Most circuits that I come across involving 7seg leds seem to involve common cathode type. I have alot of common anode type. Is there a "driver" chip similar to 7HC595 that I could use with common anode that is...
  12. J

    Scaling ADC ?

    I have 0-5v feeding ADC pin. Debug returns 0-255 steps OK. I am feeding this to 2digit led display (595's). I have the displays working OK. I want to convert this to read 0-99. I have tried dividing/multipling the ADC reading etc but to no avail. Can anyone help me ? Jeff
  13. J

    4-20mA output

    Hi all I would like to convert a voltage input to a current output. eg 0-5v to 4-20mA. I can do the "adc input part" of it OK. But I'm not up to speed with the output. I believe it is done with PWM. Rather than certain fixed output values I would like a "continual real time" output. Grateful for...
  14. J

    Li Batteries

    These Li cell phone batteries are becoming very common now, indeed I have a drawer full. Apart fom the obvious "2 in series, regulator combo". Has anyone come up with, or know of a more efficient way of using them for picaxe projects. I have not tried, but would just one of them run a project ...
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