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The Neo Timer is a small Microchip PIC based device that is used to control the power cycle sequence to one or two devices in an automotive environment. The Neo Carplayer is a hard drive based MP3 player that is designed for mobile applications. Best of all, the Neo Carplayer has had it's firmware turned into an Open Source Project The Neo uses a standard ATAPI IDE hard drive for storage. This means that the hard drive is required to run on a power supply that is no where near as stable as in a normal computer case. Also, a typical installation of a Neo would have it switch on and off with the ignition switch assessory line. I decided that the Neo deserved a more elegant power up method as I hated to see the Neo flash briefly to life as the key switch was moved from OFF to ON and then to the Start position and back. This project provides a small delay interval to be introduced that holds off the power-up of the Neo for an adjustable number of seconds. It also provides a delay for the power down cycle too. Currently, the Neo Timer has a single output signal. More complex installations sometimes require a staged power-up for multiple devices. The Neo Timer will allow for two devices to be staged a few seconds apart, so multi-component systems can initialize properly. This is a common issue if a CDC adapter is used to connect a Neo player to an in-dash head unit. The CDC/Neo needs to be powered up a few seconds before the head, so it can be recognized properly. Based on feedback I received on the Open Neo Forum, I decided to build this project in such a way that others could make it. |
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