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http://fritzing.org/ Three parts to the program: Breadboard - drag and drop just like Pebble Schematic - add components and wire them up PCB with autorouter I only downloaded it 5 mins ago and it seems very intuitive. What is very nice is that whatever you do in one of those parts is updated...

From time to time on this forum there are general questions about electronics. Take the "wire OR diode mixer" for combining serial signals for instance. I learnt about this sort of thing from books published 20 years ago (and now sadly out of print) but recently I came across a really nifty...

I've just had an email from someone trying to register as a new user on the forum. They are getting an error: Database error The PICAXE Forum database has encountered a problem. Please try the following: Load the page again by clicking the Refresh button in your web browser. Open the...

I've just come across a nifty little Basic program that can run on a PC and looks like picaxe basic. Ok, my experience of Basic started with Mbasic and then Qbasic and then vb and then vb.net. Each one got bigger and more complicated and was harder to get to "Hello World" vb.net is somewhat...

I'm pondering a little project to measure the capacity of a rechargeable battery. I did a quick search and one of manuka's projects came up http://picaxe.orconhosting.net.nz/bikeamph.jpg Here is the problem. You go along and buy a rechargeable battery and it has 2600mAh printed on the side. But...

I've just downloaded the latest compiler software. I've also been reading the data sheets on the 20x2 and I'm as happy as a pig in mud. I've also realised I'm suddenly on the steep part of the picaxe learning curve again. I'm wondering if these newer chips might be able to do strings. eg, in...

When starting out in electronics there are always the tools you have to have (wire cutters, long nosed pliers etc) and there are the tools you want but can't afford. And then there are the ones that would have saved so much time over the years. Two tools I have just bought: A nibbling tool...

http://www.musicfromouterspace.com/ElectronicTools/virtualbreadboard/index.html Looks fun. Useful as it is for creating a quick picture for describing a schematic. You could use paintshop or equivalent to do a screen capture once you have finished drawing. But imagine if the components actually...

I posted a thread late last year on the uDrive from 4dsystems. That allowed a picaxe to read and write data from a micro SD card, but it wasn't easy to get the data off the card. 4dsystesm have updated their software (with a simple upgrade to an existing udrive) so it can now read FAT files...

RF transceiver modules are great, but I've been wondering if one could be built using a picaxe and raw RF modules. Attached is a preliminary schematic. The module has RS232 D9 male or female plugs (install either) and a max232. Or you could leave those components out for TTL. Transmission goes...

Recently a colleague (Ok a forum regular. Oh, Ok it was Manuka) asked if I could help get someone onto the forum as he had not been able to. This is rather embarrassing to admit but I've not managed to have any luck either. And I thought being a moderator gave one Super Powers to fly etc *grin*...

64Mb to 2Gb of memory. Very simple interface. The program below demonstrates writing one byte to a location in ram and then reading it back. Schematic attached. Works at baud rates of 300 to hundreds of k, but tested at 2400 because this is simple for an 08M. Traps - watch that you don't bump...

64Mb to 2Gb of memory. Very simple interface. The program below demonstrates writing one byte to a location in ram and then reading it back. Schematic attached. Works at baud rates of 300 to hundreds of k, but tested at 2400 because this is simple for an 08M. Traps - watch that you don't bump...

$29.90 http://www.4dsystems.com.au/prod.php?id=22 and read the user manual which is a link on the left of the screen. Uses SD cards. A very simple serial command set. Any baud rate (auto locks on by initialising with a "U" at startup). Megabytes of storage. Does use 3V so needs resistors if...

Sometimes you come across a circuit that is just cool. This is a switching regulator for a 7805 that uses components that cost not much more than a 7805. But allow for the fact that it doesn't get hot and so doesn't need a heatsink, and it costs less. All credit to the author Roman Black...

I’m working with some interesting design criteria: 1) picaxe to picaxe communication with no serin hang (multiple inputs to one chip) 2) comms between picaxe and other micros which have no uart – eg tolerant of timing errors 3) wireless comms where the average DC value must be zero...

http://drvernacula.topcities.com/home_automation_wireless_project.htm Complete writeup, picaxe code, vb.net code, photos, examples of it working. Enjoy!

Sometimes it is necessary to send data between two picaxe chips but not have the chips hang forever waiting for a serin. This code sends a packet of 11 bytes. Receiving picaxes can poll one line or any number of input lines, so long as the status of the lines is tested at least 6 times a second...

I see Microzed are soon going to be stocking the Hope modules. http://www.microzed.com.au/Rf433.htm I had a play with these and they have real potential. One big advantage is that what goes in one end comes out the other end. With raw RF modules, when they are talking in=out, but when the...

Found this interesting product: http://www.tvterminal.de/index.html Scroll down for the english version. It could enable a picaxe to interface to a standard VGA monitor and a PC keyboard. I know the keyboard can be done via an 18X, but the video is quite unique. Many of us would have old vga...