Outdoor temperature display

What you will work towards

Read the outdoor temperature on a small dedicated display.

CAIBI’s proposed addition: Add a stale-data indicator, setup flow and readable enclosure.

Guide version 1.0. AI can help explain, adapt and debug; you still measure, assemble and test the physical result.

Start with the original

Tutorial foundation

• Random Nerd Tutorials · open source material ↗

Primary tutorial read; hardware and current dependency compatibility untested

See the original source for its photos and demonstrations. We have not copied imagery without confirmed reuse rights. A source prototype is not a photo of this proposed CAIBI build.

Parts to confirm before buying

• ESP32 development board
• TM1637 four-digit display compatible with the source
• WeatherAPI account and suitable low-voltage power
• Measured desktop case

Use the source wiring and bill of materials as the starting point. Confirm exact variants, availability, tools and complete cost before ordering.

The completion route

1. Confirm the current API response and display one valid temperature with the source example.
2. Add location configuration, update timestamps, bounded retries and a distinct missing-data display.
3. Choose a viewing angle and brightness that works where the display will live.
4. Make the measured case and repeat API, power and reconnection checks.

Prompts to move it forward

Copy a prompt into your AI tool with the source material and your actual parts. Work through one small step at a time and check the output before using it. Choose an AI tool or practise the skills first.

Extend the linked WeatherAPI/TM1637 example. Handle negative temperatures and values that do not fit. Avoid blocking forever during Wi-Fi startup. Track the last successful update, show stale data clearly, limit retries and keep the API key out of public source.

Source: https://randomnerdtutorials.com/esp32-temperature-tm1637-display/

Design a compact angled case for my measured display and ESP32. Ask about decimal/colon visibility, USB access, cable bend radius and whether it will stand or mount to a surface.

Source: https://randomnerdtutorials.com/esp32-temperature-tm1637-display/

Create a test log for Outdoor temperature display. Intended outcome: Read the outdoor temperature on a small dedicated display. Separate expected behaviour from observed results. Include power restart, disconnected inputs, communication failure and the actual physical use. Ask me to provide results, firmware versions, changes, photos and unresolved problems. Never mark a test passed without my evidence.

Source: https://randomnerdtutorials.com/esp32-temperature-tm1637-display/

What to test and record

• Try negative, zero and positive sample temperatures.
• Simulate an invalid key, invalid JSON and network loss.
• Check stale data cannot be mistaken for a fresh reading.
• Restart and confirm the display remains meaningful before the first API response.

Keep photos, exact parts and software versions with the test log. Failed or incomplete attempts are useful evidence too.

A possible next version

Add a physical location selector or a second value only if the display stays understandable.