Comments on: Tom’s RGB mood lamp

By: Steph

Steph — Sat, 05 Jun 2010 16:21:41 +0000

how does this lamp sense one’s mood? isn’t that the whole point of a mood lamp? to sense one’s mood and depending on the mood its sensing it changes the colour? eg if you’re happy it turns yellow..

By: biojae

biojae — Fri, 27 Jun 2008 01:05:38 +0000

do you have the LED connected to PWM lines for color mixing?

By: Tom

Tom — Thu, 26 Jun 2008 11:18:46 +0000

maxthereal: schematics will be on the site soon. Just need to clean it up a bit

By: Tom

Tom — Thu, 26 Jun 2008 11:04:47 +0000

wow, how did you guys hear about it. This whole project got started from a discussion on a forum thread (http://shop.rabtron.co.za/forum/viewtopic.php?f=7&t=49). Atmega8 is a bit of a overkill but thats the only avr's I had at the time plus the extra pins allowed me to have a analog input for controlling the lights and uart connection for control from a pc.

btw - a local electronics supplier here in South Africa started to sell them as a kit my my homemade pcb's: http://shop.rabtron.co.za/catalog/product_info.php?products_id=3091

By: maxthereal

maxthereal — Thu, 26 Jun 2008 11:00:19 +0000

I’m currently building something similar, but I use attinys. I simply use 3 Mosfets and 3 Resistors to limit the current (and waste some power…).
I’m very interested how he has done that with a current limiting IC (lm317) and 3 small transistors, but i cant find the schematics :(

By: David R

David R — Thu, 26 Jun 2008 03:37:53 +0000

ATmega8 a bit overpowered for controlling 3 LEDs. It’s a cool hack, maybe I’ll build one using the smallest mcu I can (and use SMT…IMO there’s no point to using PDIP if you’re gonna go to the trouble of making your own PCB)