Recent content by GreenLeader

Hi all I've not been doing any PICAXEing for a while but I now have an axe133y serial LCD for a temperature project and I've not been able to work out how to display a degree symbol yet. I've read thru a number of forum posts which gave some clues but I've not managed to turn them into anything...

What determines the ADC resolution on PICAXE chips? And leading on from that, what is the reason that there is not a higher (say 11 or 12-bit) resolution option? Also why is there not a lower resolution option for readtemp12? (say readtemp10!) Readtemp gives 1C resolution which is sometimes a...

I've been playing around with a program to plot graphs of data coming in from a serial source (like a PICAXE). There are some these around, but I've not found one that does quite I what I wanted, so I had a go at my own... Its an executable that runs on a Windows desktop or Windows pocket PC...

Hope everyone had a merry christmas... I certainly did. Not exactly a PICAXE question, but I am looking for some help with a circuit to compensate for the 1G offset on the output of an accelerometer. The accelerometer produces about 1.3mA per G. The output is sensed by measuring the volt drop...

I'm thinking of buying some kiwi patch boards but shipping from NZ is NZ$20 on top of NZ$18 for 5 boards. Anyone in Perth want to share cost of shipping? I was thinking of buying say 10 boards, and sharing shipping , ie total cost for 5 boards + shipping = NZ$28. Less if more people want..

Well I am pleased to say that I have practically completed my first proper picaxe project. It took about a year but I have built and tested the prototype. I got a lot of help from this forum, either browsing posts or from vey helpful answers to my questions. Still a few bugs to sort out, but in...

Hi everyone, I hope you might be able to clear this up for me: I am trying to reset a timer in my code but it refuses to cooperate. If I use toflag=0 it does not work in the PE simulator or in hardware. If I use settimer=value it works in the simulator but not in the hardware. My code is...

Hi guys I am using an AD623 instrumentation amplifier to boost the output of a pressure transducer fro 15mV/psi to about 260mV/psi for input to the Picaxe ADC. I computed the resistor needed to set the gain using the data sheet formula: Rg = 100/(G-1) So for a gain of G=17.39 I need...

I decided to put this up under its own thread this time: (Since earlier posts, I've exhausted the advice given so far:(. I need to use HSERIN/HSEROUT because I need the higher baud rates that it offers). I am using the "hardware serial port" and HSEROUT to upload data from my 40X1 to the PE...

Its rather a long story - I think it would take a few A4 pages to explain what I am doing in detail - so I'm going to start with an abbreviated version - hopefully 1/3 of an A4 page:). This is my first PICAXE project, though I have been playing around for a few months now, testing & learning. I...

I am using a Picaxe 40X1 and a 4x20 LCD with the FRM010 firmware chip. I can display ASCII numbers, text etc without any problem. But I can't work out how to display special characters like the degree symbol or Greek characters. Searched the forum but no luck. Could anyone point me in the...

My car has a VDO electric oil pressure gauge. I would like to take (piggyback) the signal from the existing sensor into an an ADC on a Picaxe for logging. Trouble is I don't understand the principle of operation of the gauge and have not been able to turn up much useful stuff on automotive...

I have an AXE033 with the standard 2x16 LCD display, all working fine. For my project, I need a 4x20 or 4x16 LCD. Can I use the AXE033 or the FRM010 with a 4x20 LCD? If so, could anyone recommend a suitable 4x20LCD. I've read the data sheets but they are not clear on whether 4x20LCDs are...

My question has 2 parts: 1. I need to estimate how long it would take to upload the data stored on a 24LC256 EEPROM, at various baud rates. Could anyone help with some rules of thumb? I don't follow what baud rate really means - seems like it has nothing to do with bits or bytes per second...

I have an AXE033 serial/i2c with the standard 16x2 LCD display - all working fine, but I need more lines. Is there a compatible 20x4 LCD display that can be substituted for the standard 16x2? ie can I use the base module board? Or do 20x4's need a different controller as well?