Let's Make Robots!

Super Cooler Code

Hi guys as some of you know I've been working on code for a project I have in mind, it not a new idea, lots of folks are doing it http://freeaire.com/ , I just want to put my take on it, and perhaps save some store owners some money and make a little myself.

 I live in Maine USA, winters are pretty cold here, lots of small stores have walk in coolers for keeping beer and soda code, so why not when its suitable use that cold air to cool the walk ins, a typical 8' by 20' walking cooler costs $250 or more a month in electricity to operate.

Some design stuff

More code

What I am trying to do with this code is measure air temp and humidity inside a cooler and outside the building, if the cooler calls for cooling say its over 35F, and the outside air is less than 30F and humidity outside is under 65% I want to open and ehaust damper with an end switch, the end switch will close when damper opens, then turn on a fan that will blow that cold air into cooler, also would like to show values on an lcd for a bit of wow factor.

 

 

 

adding a second dht22

I am using a dfrobot lcd, http://tinyurl.com/kfgbkf9 , and a dht22 temp humidity sensor, http://www.adafruit.com/products/385 , I want to add a second sensor, inside, outside or upstairs, downstairs kinda thing, could I get some clues, I think I just don't get how to name the second sensor, would like to add it after the delay in the loop. Google was not a ton of help?

code

 

trouble with a button

Hi guys, as some of you know I am trying to learn some arduino, exspand my stuffs so to speak, what I want to do is push a button and do a RGB led routine, push button again and turn it of, hoff's bling thing medalion got me thinking on this. I'm using Ladvian's excellent Attiny board an 85 breakout board. The idea for me is if I can figure it out I can turn most anything on or off with it, but also run a routine, or program. here's what I got so far bdk6 and JerZ hinted at the problem, but its beyond me.

LMR product

bdk6, 6677 and I were in the shoutbox and were talking about a product or something to help fund lmr, we all had privetly been thinking that with all the smart people here at lmr we could create a product or two that we could sell here in the shop or even licsense to some one like sparkfun, seed, adafruit or other.

picaxe bob

Okay here goes trying to center servos for a picaxe bob robot having trouble calling[using symbols] to do this

pir sensor

Hi guys have a few cheap pir sensors from ebay using the following code it flashes when you get with in 3 meters of it, how do I change it to remain on when your with in range as opposed to just flash, seems every way I have tried leaves the light on if I do not flash it, I am totaly missing something


main:
readadc 1,b1
if b1>0 then flash
pause 500
goto main

flash:
high 2: pause 500
low 2: pause 50
goto main

A stumbling bumbling attempt at a 3D printer

Well this is my attempt a building a 3d printer, I am blaming TinHead for the whole thing, perhaps with some blame beeing focused on CtC as well and let me state here Chris and Tinhead were both a great source of encouragement and help in this on going project. The whole journey started with my seeing Tinheads build of bumble bee  http://letsmakerobots.com/node/32879

wanders around and tries not to hit stuff
Using a
This little bot is straight from Thingiverse, obijaun is its creater, type in robot its the first one that comes up, http://www.thingiverse.com/thing:7989 .  As … Read more