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cheap microcontroller for gps tracking system

babudesai

Im working on gps tracking system for heavy equipment.  I started out project with Fona 3g from adafruit and raspberry pi.  but now i just realized that raspberry pi will file sys will get corrupted from machine turning off and on and not having time for proper shutdown for pi.  so im looking for better and cheaper solution to replace pi, that can handle unexpected shutdowns and not mess up.  also if someone knows cheaper alternative to fona 3g, that has cellular and gps support, i would appreciate it.

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  • Question where is you 'equipment' is it in the city, or way out in the country ie unimproved. If you stay around town you can use cell stuff, but if that the case like somewhere on a 50+ acre farm, or digging for gold in Alaska your cell phone is all but useless. But there are several ways to go. Sat radio $$$, 2meter repeater (ham radio), commercial repeater service  w/data service. the last two are your best shot, now they are not going to be really small. but doable.

    If you stay around town you can use cell stuff, but if that the case like somewhere on a 50+ acre farm, or digging for gold in Alaska your cell phone is all but useless. But there are several ways to go. Sat radio $$$, 2meter repeater (ham radio), commercial repeater service  w/data service. the last two are your best shot, now they are not going to be really small. but doable.

    Now on to you "shutdown problem" sounds like you are pulling power from the equipment's power. easy put in a small alkaline battery with a small charger on it. so when you shut off the main power the battery is online BUT REMEMBER to use Diodes so you don't backflow. and on the equipment power install some caps (filler), caps (noise), and a choke would be nice.

    equipment power----->|------|

                                               |------------- your device

    your battery        ----->|------|

     

    Cris

Reply

  • Question where is you 'equipment' is it in the city, or way out in the country ie unimproved. If you stay around town you can use cell stuff, but if that the case like somewhere on a 50+ acre farm, or digging for gold in Alaska your cell phone is all but useless. But there are several ways to go. Sat radio $$$, 2meter repeater (ham radio), commercial repeater service  w/data service. the last two are your best shot, now they are not going to be really small. but doable.

    If you stay around town you can use cell stuff, but if that the case like somewhere on a 50+ acre farm, or digging for gold in Alaska your cell phone is all but useless. But there are several ways to go. Sat radio $$$, 2meter repeater (ham radio), commercial repeater service  w/data service. the last two are your best shot, now they are not going to be really small. but doable.

    Now on to you "shutdown problem" sounds like you are pulling power from the equipment's power. easy put in a small alkaline battery with a small charger on it. so when you shut off the main power the battery is online BUT REMEMBER to use Diodes so you don't backflow. and on the equipment power install some caps (filler), caps (noise), and a choke would be nice.

    equipment power----->|------|

                                               |------------- your device

    your battery        ----->|------|

     

    Cris

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