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  1. U

    Picaxe serial connect, send data

    Thanks for the cr/lr advice, that did make it behave better (in the terminal). Unfortunately the code still will not work with Termite, I am fairly confident that I have the settings correct (I can receive data and I have used Termite for embedded linux stuff without a problem) My code is now...
  2. U

    Picaxe serial connect, send data

    Ultimately I would like to send data to and from a Picaxe chip through Matlab. main: SERRXD [1000],("ABC"),#b1,#b0 SerTxd(#b1,#b0,lf,cr) goto main That's the little test program I am using just now. It works when I am using the terminal (built into the programming editor) but it doesn't work...
  3. U

    cannot download to 18m2

    I set up my board last night at it was all working fine, downloading correctly. However, today when I try and and download anything it doesn't work. The strange thing is that the debug command is working, I am getting the pulsin commands from my RC receiver. I would do a reset... but 18m2...
  4. U

    Picaxe with R/C transmittor and Receiver

    I suspect this question has been asked many times before so I apologise in advance. I am hoping someone can point me in the right direction. I am planning a remote control vehicle. Previously I've used IR to control robots but this is not appropriate this time. I've used PICAXE for a few things...
  5. U

    20X2 IRIN pin number

    Now I'm pretty sure this is either really obvious or in the manual and I can't find it. I want to use IRIN, and I am not sure what to put in for pin. From the manual: IRIN [timeout, address], pin, variable -pin is a variable/constant (0-7) which specifies the i/o pin to use. Now say I...
  6. U

    20X2 readadc LDR

    OK so I have an LDR set up as in the manual except I have a 10k resistor not a 100k. (I did originally have a 150k attached and it wasn't working but I hadn't got the code right anyway I don't think) The ldr goes into ADC 8, (that's B.0 and leg 14). With my code [code] let dirsB = %00000000...
  7. U

    One motor l293d

    I have a motor that is geared down. It draws about 1.2A in normal use which is too much for the l293d and it shutsdown. I was wondering if the other side could be used for the same motor to double the current rating? Probably a stupid question but I thought I'd ask it.
  8. U

    Perpetual Ball Roller

    This isn't really a robot but it's the best category I can think of. This machine is controlled by a PicAxe Microcontroller. A servo (used for steering in R/C cars) is used to tilt the track for a ball to roll round. The degree of the tilt can be controlled by a potentiometer in manual mode or...
  9. U

    Diode Mixing circuit for multiple interrupts

    Does anyone have the circuit for Diode Mixing for multiple interrupts? aandrew's Axebot had a circuit online at http://axebot.andrew-w.co.uk/images/circuit.jpg but it is now offline. If someone has this saved could they post it? Thanks!
  10. U

    Simplest possible 40X1 circuit

    Hello I would like a schematic of the simplest possible 40X1 circuit without the programming part. I know I need 10k/22k resistors but I'm not sure exactly what to do with them. Sorry if this has been asked before but I couldn't use the search to find what I wanted. Thanks!
  11. U

    Ball - sense that is falling

    I hope I've used the correct forum... I would like to know the cheapest way to sense that a ball thrown up is descending and send that fact to a PICAXE? I was thinking along the lines of an accelerometer but not only is this expensive but slightly complicated? Thanks!
  12. U

    16MHz for 40X1

    Am I right in thinking there is a 16MHz internal crystal in the 40X1? If so you do I use it? I have found this in the manual: 28X1, 40X1 internal k31,k125,k250,k500,m1, m2, m4, m8 external em4, em8, em10, em16, em20 But I don't understand how to get 16MHz. Thanks!
  13. U

    PS2 Keyboard connected to 40X1 on axe022 board

    I am trying to connect a PS2 keyboard to a 40X1 with a axe022 prototype board (28X/40X). The LEDs of the keyboard come on but I can get no communication between PICAXE and keyboard. I tested the keyboard on a computer and it is working correctly. I have tried two test programs: ---- main...
  14. U

    Debug, readadc problems

    I am using the 28/40 proto board with a 40X1 chip. I am trying to use a Playstation joystick and the readadc command. However when using the debug command I always have a fluctuating reading of around 65 even if there is nothing even plugged into the pin! I have tested that I'm using the right...
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