Recent content by RacingtoMars

Hi all, I'm wanting to build a temperature dependent fan controller for my brother-in-law's workshop, which will run from solar-charged batteries. I'm using a 20M2 and with monitoring the battery voltage, and reading the DS18B20, I'm limited on particular pins that I can use, hence I thought...

Dear all, I have a cheap plastic 3-cup anemometer from Maplin that I'd like to 'calibrate' somewhat, as I reckon it won't have a linear response. Now, Sparkfun sell kit that looks identical to Maplin's only they're a bit more generous with information these days! Their kit here states that a...

Hi, We have a Raspberry Pi employed as a media player, but like to isolate everything from the mains at night time. There are already plenty of devices and designs that will shut the Pi down and isolate it from the 5V power supply, but I want something that completely and utterly shuts off! We...

Hi all, I've been hanging around this forum for a while, and never felt that I had much to contribute. I hope I do now!! The following project was designed for "Windmill Workshops" to meet STEM, 'process & control' and energy/environment/renewable topics in schools. The PICAXE simply...

Hi all, I'm currently tinkering (between studying/decorating/childcare) with an MSF receiver module from PV Electronics, and I've been reading through all the previous postings on the forum (thanks!). First, I feel I must declare that I work for Maplin and that this isn't a product plug!! I...

Hi everyone, I've been hanging around "back stage" for a while now, reading and learning. I wanted to bring something to the table before asking for help, and I noticed that there are a fair few posts (and loads of questions on the web) regarding PWM control of computer-type fans. What I...

Hi all, I have been lurking around in the background for some time now, reading and learning, and recently I built my first project :D Our new washer doesn't have an audible alert unlike our previous one, and this is pretty much all this device provides. It monitors the door-lock LED so that...