We originally thought of a PC & slave board but realized how difficult it is to maintain a stable PC in the back of a truck; our sun temperatures exceed 50 °C in summer, voltage levels, efficient watchdog, operating system damage due to sudden crashes, etc.; PCs greatly facilitates wifi, internet and databases but they are difficult to use outdoor on a 24x7 basis. We are open to continue with this model if you provide us a viable solution.

Our model is to have a board that we can install hardware as needed depending on the user level, we have four user levels:

Cars: Utility vehicles without propane meter, we are interested in passive gps tracking and automatic download to our database on GPS detected Wi-Fi hotspots. Bobtails: Propane delivery trucks with tank and meter, passive GPS tracking, GPS enabled Wi-Fi hotspots to upload and download data, 2 solenoids to run the meter, Adc12 for pressure and temperature of the tank and pump, Adc14 for tank magnetorestrictive level gauge. Stations: Just like a regular gasoline station, upload/download internet data by Wi-Fi, 2 solenoids to run the meter, Adc12 for pressure, Adc14 for tank magnetorestrictive level [url removed, login to view]: Propane cylinder filling station using up to 4 concurrent scales, 4 solenoids, 4 Adc 12 and 2 Adc14 for tank magnetorestrictive level gauge. Biometric controls are very desirable to prevent password theft and vandalism.

Software development will be primarily focused on sample code on how to use Wi-Fi, internet, interrupts and analog/digital ports; the low-level utilities that will be required in the main program in addition to consultancy on general design concepts but it does not include developing the whole system. We are interested in using fram, we consider it very reliable.

Skills: Microcontroller, PCB Layout, Wireless

See more: exceed database, data design concepts, 24x7 internet, concurrent, pc board design, how to program a microcontroller, microcontroller design, microcontroller analog, meter, hardware board design, GPS Tracking System, gps software development, design a truck delivery, cars & trucks, adc, microcontroller software code, run biometric program, gps tracking program code, digital board design, tracking system gps, gps database design, code software microcontroller, software development board, voltage design, microcontroller development board

About the Employer:
( 1 review ) Sabinas Hidalgo, Mexico

Project ID: #4260387

8 freelancers are bidding on average $3063 for this job


Hi i can help you , see portfolio for samples of works.

$3000 USD in 45 days
(16 Reviews)

hi, i am an electrical engineer and an embedded system developer. i can help you with this project.

$4000 USD in 80 days
(12 Reviews)

Hi, I can help you develop a robust solution. pgmr108

$3000 USD in 32 days
(3 Reviews)

Hi there! I can do this portable metrologic device for you.

$2000 USD in 20 days
(1 Review)

We are a very experienced team who can tackle this task. Please check PMB for more details.

$4500 USD in 40 days
(0 Reviews)

I have experience of transport based systems with remote monitoring and database upgrades.

$3500 USD in 60 days
(0 Reviews)

I can do it.

$1500 USD in 15 days
(0 Reviews)

I have done gps tracking systems and lots of industrial controls for many years.

$3000 USD in 45 days
(0 Reviews)