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Too hot

Posted: Sat Sep 20, 2014 1:15 pm
by Chris
Hi guys. Busy trying to get my Eleven, lcd shield, temp sensor, rtc and 8 channel together for a project and until I get a bigger board Im using a breadboard to free up some pins. Ive been trying to use an old screen i had handy
http://www.jaycar.com.au/productView.as ... &SUBCATID=
But the board gets hot, too hot to touch. Im using a 12v adaptor to power it up
Any idea why this is

Chris

Re: Too hot

Posted: Sun Sep 21, 2014 10:17 pm
by andrew
Which part of the Eleven is getting hot? Is it the microcontroller itself or the power area (bottom-right)?

In the meanwhile, double-check your wiring especially to that external LCD you're using. If possible, measure the current all your external devices are using - if it's close to 1A you need to use external power for some of them instead of all feeding from the Eleven's supply.

Re: Too hot

Posted: Tue Sep 23, 2014 12:16 pm
by Chris
Its not the microcontroller but under the external power plug. Its fine with it going through the usb. But ive put the everything on a couple of breadboards and used the lcd shield. All good.

Another question, I can move it if you like as its about the temp module not the eleven, but I cant seem to locate a sketch to upload to display to lcd.
Im trying to build an aquarium controller, and several promising threads that are similar just stop.
Any help would be appreciated

Chris

Re: Too hot

Posted: Wed Sep 24, 2014 3:49 am
by andrew
Using the LCD is explained in the quick start guide:
http://www.freetronics.com/pages/16x2-l ... tart-guide

It uses the standard LiquidCrystal library which is explained in more detail and examples can be found here:
http://arduino.cc/en/Reference/LiquidCrystal

Perhaps consider a good book on Arduino that covers all these sorts of things, for example:
http://www.freetronics.com/collections/ ... o-workshop