Device
- ESP32 + OLED (ESP-01 slim agent variant too)
- SoftAP provisioning from phone
- Deep sleep ~15 min for battery life
Personal · ESP32 · AWS IoT
ESP32 IoT platform on AWS
A battery-friendly ESP32 + OLED that talks to the cloud over secure MQTT, shows AWS account & Cost Explorer billing on the screen, and receives firmware OTA—cloud only, no home-lab broker.
What it is: end-to-end hobbyist-to-cloud IoT — SoftAP Wi‑Fi setup, mTLS to IoT Core, Device Shadow config, IoT Jobs + S3 OTA, deep sleep for long battery life, and an OLED carousel for account / MTD spend / top services.
How it’s built: PlatformIO firmware on the board; Terraform for IoT Core, API Gateway, Lambda, DynamoDB, S3, and Cost Explorer refresh; helper scripts for register / flash / OTA.
From first boot to cloud OTA
Cloud
- AWS IoT Core (mTLS MQTT)
- Device Shadow + IoT Jobs OTA
- Lambda + Cost Explorer → OLED pages
Ops
- Terraform-managed infra (ap-south-1)
- Register / flash / ota_push scripts
- JLCPCB hardware pack in progress