# Send a photo to a sleeping e-paper frame An e-paper frame receives photos remotely and sleeps between updates. ## Hardware Waveshare 3.6-inch six-colour e-paper; Seeed Studio XIAO ESP32S3 Sense A XIAO ESP32S3 Sense fetches an image over Wi-Fi, updates a six-colour e-paper display and sleeps between refreshes while the picture stays visible. ## Shopping list Two endpoints for the dedicated-camera version; one receiver for phone-photo use. The README says original/processed image URLs are public: use test images on a trusted network until access control is added. Camera capture button and offline queue are future work. 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 - The receiver GPIO map and dedicated-camera firmware have been recovered. Confirm the actual e-paper driver-board connector and power pin before wiring; panel-only glass is not sufficient. - Receiver-board/camera revision, complete enclosure dimensions, fastener counts and endpoint power supplies are still not specified enough for a verified one-click kit. ### 1 × Seeed Studio XIAO ESP32S3 receiver - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Drive the remote frame. - Notes: Receiver firmware targets XIAO pins. Showcase names the Sense family but does not establish whether the receiver itself has a camera daughterboard. - Destination: https://www.seeedstudio.com/XIAO-ESP32S3-p-5627.html - Match: Exact product - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep ### 1 × Waveshare 3.6-inch six-colour e-paper, EPD_3in6e - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: 600×400 frame display. - Notes: Choose panel plus compatible driver board, not only bare glass. Current product listing is a specification match, not proof of the creator’s purchased bundle. - Destination: https://www.waveshare.com/3.6inch-e-paper-hat-plus-e.htm - Match: Specification match; choose display plus driver - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep ### 1 × Seeed Studio XIAO ESP32S3 Sense camera unit - Requirement: Conditional - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Dedicated photo-capture sender. - Notes: A SECOND board only for the dedicated-camera route. The separate working camera/audio firmware snapshot is available under taruns_module; it must have the Sense camera attached. The bare-board recovery record reports 8MB flash and 8MB PSRAM; choose the matching variant and camera revision. - Destination: https://www.seeedstudio.com/XIAO-ESP32S3-Sense-p-5639.html - Match: Exact product family; camera revisions vary - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep - Source: https://github.com/TarunTomar122/keep/blob/main/firmware/taruns_module/media_stream.ino - Source: https://github.com/TarunTomar122/keep/blob/main/docs/board-recovery-2026-08-22.md ### 1 × Android phone - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Choose and send photos. - 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-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep ### 1 × Python server host - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Build, configure or flash the software. - Notes: Run FastAPI and image conversion. - 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-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep ### 1 × Momentary button to GND - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Receiver refresh / setup control. - Notes: Receiver code identifies GPIO1 / XIAO D0; optional camera capture button is future work, not the same button. - Sourcing: No exact purchase link verified; confirm the model and requirements above before ordering. - Evidence: Creator source - Source: https://github.com/TarunTomar122/keep/blob/main/firmware/monishas_module/main.cpp ### Set × Jumper wires and soldered connections - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Connect receiver to display/driver. - Notes: Current firmware GPIO mapping: SCK=8, MOSI=7, CS=9, DC=3, RST=2, BUSY=4 and PWR=5 when D_9PIN is enabled. Use GPIO numbers and verify the actual driver connector against its pinout; code comments label XIAO D pins separately. Also connect the correct supply and common ground. This is a source map, not a tested wiring tutorial. - 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-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep - Source: https://github.com/TarunTomar122/keep/blob/main/firmware/monishas_module/DEV_Config.h ### 1 per powered board × USB-C data cable - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Connect to the computer for programming or data. - Notes: A charge-only cable cannot flash firmware. Example requires a USB-A host port. If your computer has only USB-C, use an appropriate USB-C data cable instead. Reuse the device’s included cable where possible; this is not a standalone power-supply recommendation. - Destination: https://www.adafruit.com/product/4474 - Match: Accessory example: USB-A to USB-C, 1 m, data capable - Link review: Page checked; stock not assessed - Evidence: Setup requirement — check against your configuration - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep - Source: https://www.adafruit.com/product/4474 ### 1 × USB power sources - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Power the device. - Notes: Separate endpoints need their own suitable USB power; no battery design is supplied. - 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-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep ### 1 set × Frame / enclosure - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: House the receiver and panel. - Notes: Creator made a custom desk enclosure; dimensions and fastener BOM are incomplete. - 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-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep ### Set × Assembly and test tools - Requirement: Tool - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Assemble and check the circuit. - Notes: Soldering iron, solder, wire cutters and multimeter; review the wiring before power-up. - 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-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Source: https://github.com/TarunTomar122/keep Source reviewed, not assembled or hands-on tested. A working product page does not confirm stock, firmware compatibility or a complete build. ## Setup Kit / assembly ## Coding tool Codex ## How the agent helped The creator says Codex helped build the Android sending app, Python image server and frame software that retrieves photos over Wi-Fi. ## Before you build Requires assembly/soldering, an Android app, Python server and firmware. The dedicated camera and frame are separate endpoints; phone-photo use can omit the camera board. The repository warns that original and processed image URLs are public: use test images on a trusted network until access control is added. Camera capture-button and offline-queue work is not complete. ## Sources - Original build: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-0ddf7261982e37359f642e967431d4c2d0f15a42e52246b10dcc5894b9e8042a - Supporting source: https://github.com/TarunTomar122/keep Source reviewed 2026-11-04. Not hands-on tested.