Every time I start a new project the first question is the same: which module should I use? Picking an Espressif chip means pulling up datasheets, hunting for pinout diagrams, checking which pins are safe, and ending up with a dozen browser tabs open.

So I built something to fix that.

www.atomic14.com/esp32 is a free, community-maintained database of Espressif modules. Every module in one place, with the specs, pinouts and 3D models you actually need to make a decision.

What’s in there

Right now it covers 24 modules across 11 SoCs, from the classic ESP32 through to the ESP32-S3, ESP32-C3 and ESP32-H2. For each one you get:

• Searchable specs pulled straight from the official datasheets: cores, clock speed, RAM, flash and PSRAM options, Wi-Fi and Bluetooth support.
• Colour-coded pinouts with the strapping pins and “don’t use these” warnings called out, so you don’t get caught by a pin that fights you at boot.
• Interactive 3D models so you can see the actual footprint and dimensions before you commit to a board layout.
• Side-by-side comparison to put two or three modules next to each other and see exactly what changes.
• Getting-started pointers for Arduino, ESP-IDF and MicroPython, plus links back to the source datasheets and reference designs.

Update: now with boards and sensors too

Since launch it’s grown well beyond bare modules:

• Every popular ESP32 display board in one filterable table — the Cheap Yellow Display and its successors, the 7” wall-panel boards, AMOLED and e-paper, filterable by size, touch type and ESPHome support. Plus guides like which display board for Home Assistant and why big cheap screens feel slow.
• A sensor module database — mmWave radars, temperature, CO2, energy and more, each with its ESPHome support status and a counterfeit-risk rating. If you’ve ever received a “BME280” with no humidity readout or a batch of fake DS18B20 probes, start with the fake sensor problem.

Goodbye to the old ESP32-S3 pinout

This replaces my old ESP32-S3 pinout post. That started life as a single GitHub image, which was useful but hard to keep current and only covered one module. The new ESP32-S3-WROOM-1 page does everything that did and a lot more, and the same treatment is there for the rest of the family.

It’s a living document

Datasheets get revised, mistakes creep in, and there are always edge cases worth flagging. Every page has a built-in way to report errors, and corrections are very welcome. The more eyes on it, the more accurate it stays.

Go and have a poke around: www.atomic14.com/esp32. I’d love to hear what’s missing.