🧃 Hackathon: Deloitte Hackathon 2017
I took part in the first Hackathon organized by Deloitte Brasil, a 36-hour innovation sprint aimed at creating tech solutions with societal impact. The event was hosted at the company’s São Paulo HQ and brought together developers, designers, and visionaries focused on connected innovation.
Our project: JoJo
JoJo was a smart bottle assistant prototype built using an ESP8266 Wi-Fi microcontroller, connected to IBM Bluemix (now IBM Cloud) via MQTT. It featured:
- Voice command recognition with simple response feedback
- A Swift-based iOS application for interaction and visualization
- OLED display for text feedback and animated expressions
- RGB LED color transitions representing the assistant's status
This was a full-stack, cross-discipline solution: hardware, firmware, cloud messaging, and mobile UI all working together.
We used:
ESP8266WiFiandPubSubClientfor MQTTAdafruit_SSD1306andU8glibfor display output- IBM IoT Cloud for device communication and telemetry
- Swift + UIKit for iOS prototyping of command interactions
Why JoJo?
JoJo was imagined as a lightweight, personal IoT assistant — something like a wellness companion that could eventually integrate hydration tracking, reminders, or friendly conversation for elderly or isolated users.
Even though the project didn’t win the hackathon, it received great feedback from mentors for its ambition and polish. More importantly, it was a rare opportunity to combine embedded electronics with mobile UX and cloud services in a real-world context.