In Progress

Temperature and Humidity Logger System with Wireless Reporting

We are looking to develop a Temperature and Humidity sensor/data logger system for use in extended transportation situations. The sensor/logger will be used to monitor goods and transmit the data during transport from their source to final destination. The device must be capable of long-term battery operation, wireless communications with a remote monitoring station, management of stored data, and Over-the-Air (OTA) programing. The devices will require a unique ID to enable individual devices.

The sensor/logger would ideally have a status display showing the relevant information such as Temperature, Humidity, Battery Level, Memory Status, etc.

A second component of the system is a dedicated Hub to collect data from the sensors and transmit it to a Remote Monitoring Station. Mobile Hubs would use GPRS while fixed hubs would generally use Wi-Fi.

During transit, the Mobile Hub will be required to store data received from nearby sensors and forward it to the Remote Monitoring Station when a communications channel is available. The Hub must also be able to monitor the openings and closings of the transporter’s door and send an alert if a programmable period is exceeded.

The sensor/logger must be able to have various data uploaded including Alarm Levels and Consignment Information etc. Please use the words Consignment Data in your response Heading.

A second version of the sensor/logger should have an additional external temperature sensor and a set of dry contacts to monitor the opening and closing of a door via a magnetic reed switch.

Data will be transmitted to our proprietary database.

Deliverables will be 2 x Sensor/Logger and 2 x Hubs (1 x Fixed + 1 x Mobile) including PCB files and fully documented code.

Please reply with examples of previous work on similar wireless data loggers or IoT devices.

Skills: Electronic Design, Digital Electronics, Programming, PCB Design and Layout

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About the Employer:
( 1 review ) fRENCHS fOREST, Australia

Project ID: #20999018

Awarded to:


The 'CONSIGNEMENT DATA' for the transportation situation comprising processing, logging, telemetry and Display/ storage of data can be developed by us. We are currently having one ongoing long-term project in freelan More

$750 AUD in 30 days
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17 freelancers are bidding on average $517 for this job


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$450 AUD in 7 days
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$700 AUD in 20 days
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$650 AUD in 30 days
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$500 AUD in 6 days
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$500 AUD in 7 days
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$500 AUD in 5 days
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$500 AUD in 6 days
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$700 AUD in 15 days
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Deliverables will be 2 x Sensor/Logger and 2 x Hubs (1 x Fixed + 1 x Mobile) including PCB files and fully documented code. I can deliver 2 units. With sensor and hub. There is also cost of shipping ad PCB/PCBA. It ta More

$750 AUD in 21 days
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