Most Arduinos can take 6-20V on the Vin so you shouldn't need a regulator (there's one onboard).

Both my SainSmart and the nanos say up to 12V.

Had a quick look on Google. Depends how much current the board will be consuming. If it's not doing too much it should be ok with the 18V, otherwise it would need another regulator that could handle tthe current.

A quick question about the mini boards: what cable is required to program the board? Is it just a cable or is there a circuit board between the two?

I might buy an 8MHz mini to make a custom transmitter to use my Taranis controller with my Hubsan X4.

The Pro Minis (without USB) need a USB to Serial (FT232) adapter of some sort to program them.

Because my adapter doesn't have the correct reset pin or something like that it's a pain to use, I've got to reset the board at exactly the right point to get sketches to load.

This might be useful - https://www.youtube.com/watch?v=Vawhrr4COjI

Much obliged once again Anthony. I'll have a look at that video later. Too many things I want to do already that I don't have parts for.

A little graph of the temp monitoring using a LM35. The temp at the start was in my bedroom, dropped when I brought the laptop into the kitchen. Went back up with the oven on. The drop down to 6°C ish was when I put two frozen peas either side of the sensor.

I have quite a few things on the way from China <twiddles thumbs>

And to think our forefathers had to go down the pub and play skittles for laughs. Indeed, we are reaching an apex of civilisation.

There's still a skittle pub in Edinburgh, it's awesome.

But how hot is it? If Chris doesn't get there, we'll never know.

Playing skittles in a pub does sound like a lot of fun. I did need something to do while cooking my chicken kievs though.

Data!

Nice data :) What do use to protect your Arduino outside? And how long do they last sending data wirelessly?

I have got a button fading my LCD brightness in and out. Need to actually show something on it though.

The outside one is on a cable hanging out of the window. I did have a solar/battery powered one but there wasn't enough sunlight where it was placed.

The others are wireless for sending data but plugged in for power.

I see, dangling out of a window sounds good :) Any idea how long they'd last on a battery?

New video. Got it running a very basic clock at the mo. For some reason when it gets to 32 seconds it starts counting up really quickly and I have noooo idea why. Probably be easier when I get my RTC.

int instead of unsigned int. Oops.

Oops again. That should be unsigned long. With unsigned int it does the same after 65 seconds instead. It will start going nuts after 50ish days now.

Go on with your bad clock making self!  I'd like to make one of those word clock things with mine.  But I have way way way too many projects that I'd like to try, I need to complete at least one before I start another!

It's not a very accurate clock. It was about 3 seconds out this morning, so after about 6 hours. It uses the millis() function so probably not that accurate (or my time keeping code is bad). Could probably tweak it though. Think an RTC would be easier though. One on the way.

I like the word clocks. Seen a few of them made with Arduino. Have a look for Equinox clock. Not a word one but I like it lots.

This one will be an alarm clock which will /hopefully/ help me get out of bed in tthe mornings.

I've already got a list of things I'd like to build:
Freezer temp alarm
Birthday reminder
Wireless temp
Heating controls
Transmitter for quadcopter

I've got a type of world clock project in mind. It'll be a big job though. I'll definitely post it if I do it.