Recent content by fortis

The editor syntax check for a PICAXE 40X2 program failed with the following message (this is using Axepad for Macintosh): Error: Memory location already used! (err=25: Inappropriate ioctl for device) There is no indication of a line in the code related to the error, so I'm wondering what I...

Using MacAxepad 1.1.0 on 12" mac powerbook under system 10.5.8, attached to large monitor (1920x1200 pixels). Works fairly well, except that if I drag editor window to be longer than around 700 or 800 pixels (about 60 lines of code at courier 12pitch) in one go, the editor regularly crashes. If...

I have a PICAXE controlled solar controller and wanted to add independent PWM control of speed for 2 small pumps (12V, 5 to 10 watts each). I have a couple of L298 drivers on hand and am wondering if I am on the right track to using the L298 for this project. The schematics in the SGS-Thomas...

In an earlier post I asked about protecting digital sensor inputs from transients for a environmental controller, which has a 40X2 with 18 digital inputs from flow meters and DS18B20 thermometers. Based on that feedback and other research I decided to use the Littelfuse SP721A active TVS as it...

I've found useful tips here for protecting PSU's from transient surges in cars etc. but little shows up in searches re: protecting Picaxe digital inputs connected to 1-wire sensors, which might be outside on a tower or machine and exposed to EMI, lightning etc. The 1-wire buss is powered and...