Coming soon · OTA for MicroPython microcontrollers

Secure OTA updates for MicroPython on ESP32.

Signed over-the-air updates that barely touch the battery.

Explore the features

Overview

Example data

24,780

Devices

99.8%

Confirmed

2 min

Avg. rollout

Deployment progress, last 30 days

Why otalite

Built for devices that sleep.

Low-power OTA updates for battery-powered ESP32 microcontrollers (MCUs), designed around deep sleep.

ESP32 battery life · Planned

Run your battery flat, in minutes.

Package a release and we run it against a virtual battery until it's empty, fast-forwarding through every deep sleep, so months of ESP32 battery life and power consumption take minutes. Then you see the day each release would run out.

Your target · 12 months

1.4.1 · Current release · empty after

16 months

✓ Meets target

1.4.2 · New release · empty after

11 months

✗ 1 month short: held back

−5 months, mostly radio: reconnects doubled.

sensors/upload.py · send()

62% of awake time

main.py:48

loop never sleeps

Batch uploads every 10 min → +3 months

Example data. Simulated, not measured: estimates until calibrated on real boards.

Learn more about battery life ›Try the ESP32 battery life calculator ›

Coding agents · In development

Built for your coding agent.

Ask Claude Code, Cursor or Copilot to add otalite. Prompts, AGENTS.md instructions, a Claude Code skill and an MCP server, so your agent adds OTA updates to your MicroPython project correctly.

thermo-firmware · agent

Example

> Add otalite OTA to this MicroPython project

Reading otalite's AGENTS.md and the Claude Code skill…

✓ Installed the otalite client with mip

✓ Check-ins on each wake, then back to deep sleep (main.py)

✓ Confirms the release once sensors and upload work

✓ Battery target: 12 months on 2,000 mAh

Pre-flight passed · projected 16 months

→ Drafted rollout thermo 1.4.2 · waits for your passkey

otalite init

Writes the agent instructions into your project.

MCP server

Lets your agent read fleet status and draft rollouts. You approve them.

Your passkey

Agents get no publishing rights by default; a rollout an agent drafts waits for you.

Learn more about the agent kit ›

Secure OTA for ESP32

Signed. Verified. Or not installed.

Signed firmware updates (Ed25519), verified on the device: the kind of secure update mechanism the EU Cyber Resilience Act asks for.

Ed25519

A signature on every release, verified on the device before it installs.

OSCORE

Every check-in encrypted and authenticated. Replays are refused.

Rollback

A version that never confirms is undone by the device itself.

Learn more about security ›The CRA and OTA updates ›

otalite runs on Fly.io and Tigris, whose infrastructure has SOC 2 Type 2 reports. Those reports are theirs: otalite itself is not SOC 2 audited and does not sign BAAs.

From the workbench