# An AC remote that checks what happened A Pi sends infrared AC commands and uses a camera to check flap position. ## Hardware Raspberry Pi 5 (4GB); IR transmitter; Logitech BRIO 100 A Raspberry Pi sends infrared air-conditioner commands, then a webcam checks the position of the unit's flap rather than assuming a command succeeded. ## Shopping list A flap photo verifies observed flap state, not cooling performance. Low-confidence results must remain unclear; do not automatically retry IR commands based on uncertain observations. Quantities are for one build. Unless marked source-specified, they are planning quantities; confirm kit contents and the chosen configuration before ordering. ### Confirm before buying - IR emitter, driver, capture method, air-conditioner model and signal compatibility are incomplete. ### 1 × Raspberry Pi 5, 4GB - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Infrared/vision bridge. - Destination: https://www.pishop.us/product/raspberry-pi-5-4gb/ - Match: Exact Pi 5 4GB; US retailer - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 × 128 GB microSD card - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Firmware, operating system or project storage. - Sourcing: No exact purchase link verified; confirm the model and requirements above before ordering. - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 × IR transmitter module - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Emit captured AC remote signals. - Notes: Part, driver circuit and electrical ratings not identified. - Sourcing: No exact purchase link verified; confirm the model and requirements above before ordering. - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 × Logitech BRIO 100 USB webcam - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Observe AC flap position. - Destination: https://www.logitech.com/en-gb/shop/p/brio-100-webcam.960-001585 - Match: Exact product; UK store - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 × Existing air conditioner and its remote - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Controlled appliance and source signals. - Notes: Exact AC and remote models not published. - Sourcing: No exact purchase link verified; confirm the model and requirements above before ordering. - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 × Infrared capture hardware - Requirement: Conditional - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Learn the original control signals. - Notes: Only needed if no valid signal capture exists; creator does not identify the capture device. - Sourcing: Use existing equipment or match the specification above. No exact purchase link verified. - Evidence: Setup requirement — check against your configuration - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### To confirm × GPIO wiring and transmitter drive circuitry - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Connect the IR module safely. - Notes: Do not drive a high-current IR emitter directly from Pi GPIO. - Sourcing: Use existing equipment or match the specification above. No exact purchase link verified. - Evidence: Setup requirement — check against your configuration - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 × Pi 5 power supply - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Power the device. - Notes: Choose a Pi 5-rated supply and account for the camera and IR circuit. - Sourcing: Use existing equipment or match the specification above. No exact purchase link verified. - Evidence: Setup requirement — check against your configuration - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 set × Stable camera / emitter positioning - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Keep observations and IR reliable. - Sourcing: Use existing equipment or match the specification above. No exact purchase link verified. - Evidence: Setup requirement — check against your configuration - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 ### 1 × Computer for setup - Requirement: Tool - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Build, configure or flash the software. - Sourcing: Use existing equipment or match the specification above. No exact purchase link verified. - Evidence: Setup requirement — check against your configuration - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Source: https://x.com/i/status/2112555939828244618 Source reviewed, not assembled or hands-on tested. A working product page does not confirm stock, firmware compatibility or a complete build. ## Setup Sensor workflow ## Coding tool Codex ## How the agent helped The creator describes using Codex for component selection, implementation and debugging, sharing photos of the physical setup during development. The observed feedback is flap position, not a measurement of cooling performance. ## Before you build Camera observations show flap position, not cooling performance. Requires wiring, remote-signal capture and model service; unclear results must stay unclear. ## Sources - Original build: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-edea2dffa1a7b0152eaa552435b98b5681a257a5f2b6dfda1ceba433217901dd - Supporting source: https://x.com/i/status/2112555939828244618 Source reviewed 2026-11-04. Not hands-on tested.