How do i do it and which part of your code that i need to edit to enable such function and i am fairly new to arduino.
looking forward for your reply.

This is seriously a good project! Cheers!!

I think i understand the gist of it all now. My only concern is that it appears if nothing triggers the sensors they seem to switch off and i have to manually flick the reset on the board.

Thanks for your speedy reply!

I would love to tell you i have even the slightest idea as to what im doing but that would be a lie im afraid so your question regarding where in the code i am up to is impossible to answer as i simply do not know haha.

I have been going through your code and my good friend google has been giving his fair share of help too but progress is slow.

I suspect i may not have corrected the BYTE issue of the 1.0 release so am starting again to look through and better understand what is going on. On this note though, to solve the BYTE issue, would one simply just do a find and replace type of command or would something more drastic need to be implemented?

You mention soldering — I’d start with a breadboard first, easier to fix if there are problems

A link to the datasheet for the LED driver (M5451) is included on the project page, I would start there to get a deeper understanding of that. Basically though the bottom pin is the power supply for the chip, brightness is used to control the overall appearance of the LEDs. If that’s handled wrong that could prevent them lighting up.

Really like this project, so much so that after i can get my iddy biddy head around all the states, shifts and other tech head mumbo jumbo i would love to hook up a light sensor to only activate during certain levels of light and have larger arrays of lights and sensors around the whole house to activate as emergency lighting…..sneaking into the house without waking people up is considered an emergency

MY problem at the moment is i have soldered it all up and it appears the code has uploaded correctly and the PING’s little LED’s periodically go ballistic but i can’t seem to get main LED’s to turn on.

Besides including the Lightuino and Ping Library and changing the reoccurring syntax errors on one or two things, would any other code need to be changed? I come from 0 electrical background so the learning curve on this is huge for me but hope to make sense of it all.

Also i was a little confused with the LED driver. I notice you feed a 5V into the bottom pin and then again into the brightness pin across a 1kw resistor. What’s the purpose of this?

Thank you in advance with any light you could shed on this problem but understand if you are too busy to get back to me. Regardless, love the project and hope to see more wonderful creations in the future.

Kind Regards
James

I didn’t use fading but for LEDs one usually uses PWM. The question again is how to do this in the context of using the Lightuino code. Lightuino has its own Google code page so I would check there.

The MUX shield covers the extra output pins (and input) but not the power issue. It uses the exact same shift registers I describe in my post, but costs $25 instead of $0.25, and is much larger. I don’t desscribe input in my post, but you can get cheap input MUX chips as well. So it’s a matter of whether the convenience of just using a shield is worth the money and size.

I saw this today on Sparkfun, https://www.sparkfun.com/products/11723 and wondered if it would provide sufficient pins, etc in a similar fashion to what you built to obtain more pins and power.