Coffee farms in Bahia needed field and weather readings to reach the people making irrigation and treatment decisions. Paulo Cardoso worked on DrFarm’s IoT ingestion and synchronization, including periods without an internet connection.
Field and weather readings had traveled on paper. Managers needed to compare rainfall, soil and sector information when making irrigation and treatment decisions, rather than reconstructing the conditions afterward.
Many sensor locations lacked direct internet access. Connectivity was an architectural constraint, so collecting and storing readings locally had to be part of the normal workflow.
Sensor towers formed a local mesh and relayed readings to a gateway with internet access. The gateway synchronized with Node.js ingestion APIs on AWS. Inputs included temperature, rainfall, humidity, wind and soil readings.
Devices continued collecting data while disconnected. When connectivity returned, timestamp-based deduplication and merging handled late arrivals, allowing the cloud stream to incorporate the locally stored information.
Project materials showing the workflows and interfaces described in this case.
The platform connected collection in the field to the information available to the farm owner. Managers could compare rain, soil and sector readings in one workflow, with synchronization designed around intermittent connectivity.
The system’s owner needs to understand the devices, gateway and cloud ingestion together. A cloud dashboard alone cannot explain a missing reading. The useful operating record includes storage during an outage, timestamp handling, synchronization state and the route from a sensor to a decision.
Project contribution: Paulo Cardoso. The scope described above identifies the work behind this case.
Editorial review: Ego Eimi · Updated September 6, 2026 · About the team
Your technology
Start with the business
Tell us which system matters, what has changed and who controls it. We will define a reviewable next step. Read Foundation and the commitments and evidence.
