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Hi Guys it's been a while since ive used a picaxe, I am trying to send a serial transmission from a Parallax Propeller chip, to the picaxe 18 chip in my project board. It is being transmitted inverted, I have a common ground between the 2 boards, and the Tx lin at the propeller end is pulled...

Hi I made a post which I beleive is in archive 17, I cannot view it as it will only allow me to view posts upto a year old, also I cannot remember what it was called to search for it. Please could you help?

Hi guys I am looking at using the 08 with a project I am working on, easy project but I have to make it cheap and small. What I was wondering was, after the 08 is programmed does it need to 2 resistors on the download circuit if it is never to be update ever again? Will it be reliable? I am...

Heya Ok, I been playing around with an 08m and a speaker, I want it to produce a 2 note tune which sounds like a train horn (two tone) Can any one help, im not very good with notes etc DJH

Heya guys I have got my model train speed detector working great, but the only problem I am having is with sensing when the train is going over, I have tried magents and reed switches, but they only work if the train is going very slow. What could i use instead? what are the infra red...

Hiya guys I have an lcd that only displayes properly when connected to the pc via the download cable, I am using the 18 High power board. Is there something I have to ground or something? DJH

Heya Guys I bought this lcd: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=019&item=290005727312&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1 Got it, soldered the serial board together, connected it to 5V, and it lights up and displays it's firmware. I have the serial in...

If b1 and b3 and b5 < 40 THEN pwmout 3,0,0 End if Just comes up with the "mistake in this line". I don't want to use a label as I am going to lose where I was in the program, and if I use a gosub/return then I have the same problem as i still get an error. DJH

Hey guys looking at: http://www.rev-ed.co.uk/docs/chi035.pdf Page 8, can anyone tell me the value of R3 on the high power board? I took the wrong resistor offas I forgot that inputs 3 and 4 are for the serial download circuit. I now have it pulled up via a 4k7 and is working fine but was...

Heya Does anyone have any experience or routines of getting the picaxe to deal with septests (whereby 1 byte = 7 bits) on an incoming serial port. Any info would be much appreciated Also how many letters can a word variable use? DJH

Hey guys, ok my father is really into his model railway stuff, for those that don't know, most modern model railway systems use a system called DCC, whereby 0v and 16V are constantly sent through the track, then each train has a decoder which receives a signal through through the track which...

Hey guys I want to make something that can measure the speed of model trains. Now if I have 2 sensors a fixed distance apart (like 30cm) then I just need to time how long it takes for the 2nd sensor to be tripped after the first one, then speed = distance / time. Any ideas? im guessing its...

I had another topic but has been archived now, so here goes. Part 1 of this little project is I need to use and ADC as a voltmeter, The voltage I need to measure is between 5-12V (1A). I have tried using a variable power supply to get used to using the adc, I was putting in between 1.1 and 3v...

I had another topic but has been archived now, so here goes. Part 1 of this little project is I need to use and ADC as a voltmeter, The voltage I need to measure is between 5-12V (1A). I have tried using a variable power supply to get used to using the adc, I was putting in between 1.1 and 3v...

Hey guys I am working on something for my father, he has a bank of power supplies in a case, and I want to make something that measures temp and switches on a fan at a preset temp, measures voltage output and current being drawn from the psu. I need to find out the voltage but I beleive it is...

ok I have the Picax 18 dev board. I am just playing with it at the moment, I was just wondering can you use the serial cable/download circuit to talk back to the PC? or do you have to you input and output pins to make a seperate serial connection? Im thinking it's the latter, but not sure...

Ok I am trying to make a circuit with 16 inputs and 16 outputs, if input 5 is activated then I want output 5 to light for instance, but if input 2 is activated at any time, I also want output 2 to light. All leds are to light with a 2 second delay. Now, I cannot see how this can be done with...

Hiya I get my Picaxes this week, I have started to play with some code, basically i want to randomly light one led out of 14 with a picaxe 18X. Can you tell me if my code is ok and if it will work. If it will, could you advise of how i could possible also randomly leave the previous led on...