I Built an Office App for a JAV Smart Board with AI

I just used AI to build a small office app for our JAV Smart Board.

It puts dates, notes, and pictures in order on the big screen. Pick a date, and the story behind it appears.

But I wanted to check one more thing: if I closed the app, would my work still be there?

Let me show you how I made it, and what happened when I put it to the test.

These screenshots show JAV Case Timeline 0.1.1 on our Android 14 test board. All names, events and pictures are made up. We used a separate demo view for the photos, so they did not change any saved work.

1. I gave the AI one clear job

Think about a meeting where someone asks, “What happened first?” You have dates in one file and pictures in another.

I wanted to put them together. A simple timeline app could show each event in date order.

I used Codex, an AI tool from OpenAI, to help write the code. Code tells an app what to do.

A request like this gives it a clear starting point:

“Make a timeline app for our JAV Smart Board. Let me add a date, a short note, and a picture. Make the buttons big. Save my work on the board.”

We used made-up events and pictures for the test.

2. I linked the computer to the board

Codex ran on the computer. The new app would run on the JAV board.

To link them, we used an Android tool called ADB. The board owner gave permission to connect over Wi-Fi.

Once we checked that it was the right board, Codex could use that link to put the app on it and run checks.

Now the idea had somewhere to run.

3. The idea became an app

Codex helped build the app, and we installed it on the board. We called it JAV Case Timeline.

Dates appeared on the left. Notes and pictures appeared on the right. The app let us:

• Add an event or change a note.
• Attach a picture and open a larger view.
• Hide the edit buttons to show the story to a group.
• Save a backup file and bring it back into the app.

The app needs no login. It saves your timeline on the board. Once the app is built, you can use it without keeping Codex open.

The screen looked ready. Next came the part that mattered most.

4. I closed it. Then I checked my work.

We added a test event, saved it, and closed the app.

When we opened it again, the event was still there.

We also checked that a test picture appeared, the show view worked, and a saved backup could be opened again.

These checks ran on the real JAV board. The computer sent the taps and text. A person still needs to try the screen to judge how it feels to use.

We found one thing to check by hand: the board's keyboard changed some English letters sent by the computer. Real typing and pen use still need a person to test them.

We are still checking speed and smoothness before daily use.

This is a first test version. It holds one timeline, with notes and pictures. It does not yet handle PDF files, pen notes, or cloud sync. We tested it on one JAV board with Android 14; other boards need their own checks.

5. What would you build on your board?

Our app started with one small need: show what happened, and when.

Yours might start with a team task list, a class game, or a product guide that visitors can tap through.

Each idea needs to be built and tested. But the next idea does not have to look like ours. Codex and a JAV Smart Board give you room to keep trying new things.

Think of one task you wish your board could do.

Tell the JAV team what you want to build. What should people see, tap, and save? Start there. We can talk through what to try first.

Still choosing your screen? Explore JAV Smart Boards.