Hi all,
Thanks' to input of this forum, the next, much improved to my mind version of big intersection project has been born. I will not repeat all the "wall of text" as some of you referred to it describing all the functions. I'm quite sure, it actually does not matter as it is only inputs and outputs anyway and all depends on the software that will go into picaxe-20M2 and picaxe-08M2 chips. What I'm after is any advice about the electronics. Any beginners mistakes you can catch or things I have not thought about. A filter capacitor here or there. A pull-up or pull-down resistor missing. From power supply to i/o expanders and optocouplers. Maybe something can be omitted to save space and money?
The ten pin connectors go out to 4 blocks of input and output devices, the 6 pin connectors go to LED traffic lights and JP1 and JP2 is just rows of male headers to have access to picaxe pins in case such a need would arise. DIP switches allow selecting various options that the software will take into account when running the outputs.
Thank you all for your time,
Edmunds
Thanks' to input of this forum, the next, much improved to my mind version of big intersection project has been born. I will not repeat all the "wall of text" as some of you referred to it describing all the functions. I'm quite sure, it actually does not matter as it is only inputs and outputs anyway and all depends on the software that will go into picaxe-20M2 and picaxe-08M2 chips. What I'm after is any advice about the electronics. Any beginners mistakes you can catch or things I have not thought about. A filter capacitor here or there. A pull-up or pull-down resistor missing. From power supply to i/o expanders and optocouplers. Maybe something can be omitted to save space and money?
The ten pin connectors go out to 4 blocks of input and output devices, the 6 pin connectors go to LED traffic lights and JP1 and JP2 is just rows of male headers to have access to picaxe pins in case such a need would arise. DIP switches allow selecting various options that the software will take into account when running the outputs.
Thank you all for your time,
Edmunds
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