The open-source Adafruit IO alternative you host on your own Cloudflare account

Most people searching for an Adafruit IO alternative have run into one of three walls: the free tier’s data-rate limit, the cap on how long history is kept, or simply wanting their feeds on infrastructure they own rather than a hosted cloud. nodrix is built for exactly that. It’s open-source (MIT), and instead of signing up for a feed service you deploy it to your own Cloudflare account in one click — your feeds, dashboards, automations, and history all live in your tenancy, with no publish-rate ceiling and no per-account retention window.

This is an honest comparison, including where Adafruit IO is the better pick.

What Adafruit IO gets right

Adafruit IO is a joy for learning. The tutorials are some of the best on the internet, the CircuitPython and Arduino libraries are tight, and there’s a bundled MQTT broker so an always-on board can publish and subscribe with almost no code. If you’re already in the Adafruit hardware ecosystem and want a dashboard this afternoon, it’s hard to beat the on-ramp. For a classroom or a first IoT project, that polish is a real feature.

What sends people looking is the model: it’s a hosted service with a free tier that limits how often you can publish, how long your data sticks around, and how many feeds and dashboards you get. None of that is wrong for a freemium product — but it’s the thing makers react to when a project outgrows the box.

Adafruit IO vs nodrix, honestly

When Adafruit IO is the better choice

• You want the bundled MQTT broker and an always-on board doing frequent pub/sub.
• You’re teaching or learning, and the tutorial ecosystem plus CircuitPython integration is the whole point.
• You’re comfortably inside the free tier or happy to pay for IO+, and you don’t need to own the data layer.

If that’s you, Adafruit IO is a great answer and the ownership trade isn’t worth it.

When nodrix fits better

• You’ve hit the data-rate or retention limits and want headroom that’s only bounded by your own Cloudflare usage.
• You want open source and ownership — your telemetry in your account, never on a third-party cloud.
• You want a device library’s convenience without the lock-in — an optional open Arduino library over a protocol any board can speak, not a vendor library or broker.
• You want a clean read API to pull data into Grafana or your own app, plus edge automations you fully control.

Moving a feed across

The device side is tiny. Wherever your firmware publishes to an Adafruit IO feed, send the reading to nodrix instead — the metric key becomes a variable the first time it’s seen:

#include <Nodrix.h>
#include <DHT.h>

DHT dht(4, DHT11);

void setup() {
  dht.begin();
  Nodrix.begin(WIFI_SSID, WIFI_PASS, HOST, TOKEN);
}

void loop() {
  Nodrix.run();
  Nodrix.send("temperature", dht.readTemperature());   // was feed("temperature")->save(t)
}

Commands come back through a NODRIX_WRITE handler — the library polls or holds the control socket and acks for you. The full firmware is in Connect an ESP32 over HTTPS. From there you rebuild your blocks as nodrix widgets and recreate any IO actions as trigger-condition-action flows.

The bottom line

If you value the Adafruit ecosystem and a hosted MQTT broker, Adafruit IO is a fine home. If you’ve outgrown the rate and retention caps — or you simply want open source, ownership, and a usage-based cost model — deploy nodrix to a spare Cloudflare account, point one device at it, and star the repo to follow along.