# 62 BAR: a miniature DJ instrument A compact DJ instrument combines a motorized platter with a screen and physical controls. ## Hardware Raspberry Pi 5, 2GB; Waveshare 3.5-inch RPi LCD (F); SparkFun ROB-22132 A Raspberry Pi coordinates a motorized platter, touchscreen, keys, encoder, fader and audio interface inside a custom enclosure. ## Shopping list Physical prototype, not a finished retail controller. The source’s assembly image is a visualization; it does not verify mechanical fit or current motor feel. 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 - Exact switch/cap variants, CAD files/revision, cable harness, fastener counts, cooling and motor power budget remain incomplete. ### 1 × Raspberry Pi 5, 2GB - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Main computer. - Destination: https://www.pishop.us/product/raspberry-pi-5-2gb/ - Match: Exact Pi 5 2GB; US retailer - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 × Waveshare 3.5-inch RPi LCD (F) - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Touchscreen. - Notes: Use F, not A/B or a same-size HDMI panel. - Destination: https://www.waveshare.com/3.5inch-rpi-lcd-f.htm - Match: Exact product - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 × SparkFun ROB-22132 - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Brushless motor/controller/sensor assembly. - Notes: This assembly includes its motor; do not order a second one by mistake. - Destination: https://thepihut.com/products/sparkfun-iot-brushless-motor-driver-esp32-wroom-tmc6300 - Match: Exact product ROB-22132; UK retailer - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 × ESI GIGAPORT eX USB audio interface - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Multichannel audio output. - Notes: Do not substitute GIGAPORT HD+. Confirm delivery region; Linux operation is attributed to the creator, not the retailer’s Windows/macOS software claims. - Destination: https://woodbrass.com/en/products/esi-gigaport-ex-371325 - Match: Exact GIGAPORT eX; French retailer - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 - Source: https://woodbrass.com/en/products/esi-gigaport-ex-371325 ### 2 × Adafruit NeoKey 1×4 QT (4980) - Requirement: Required - Quantity basis: Source-specified quantity - Purpose: Key input boards. - Notes: Boards do not include mechanical switches or keycaps. - Destination: https://www.adafruit.com/product/4980 - Match: Exact product - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 × Adafruit assembled rotary encoder (5880) - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Rotary control. - Destination: https://www.adafruit.com/product/5880 - Match: Exact Adafruit 5880 - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 × Adafruit NeoSlider (5295) - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Fader. - Destination: https://www.adafruit.com/product/5295 - Match: Exact Adafruit 5295 - Link review: Page checked; stock not assessed - Evidence: Creator source - Source: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 6 × Outemu GTMX low-profile switches - Requirement: Required - Quantity basis: Source-specified quantity - Purpose: Six fitted keys. - Notes: Confirm the exact switch footprint matches both NeoKey sockets and the creator CAD. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 6 × Matching keycaps - Requirement: Required - Quantity basis: Source-specified quantity - Purpose: Fit the six switches. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 set × Black MJF PA12 nylon base, faceplate, carrier and platter - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Custom printed structure. - Notes: Source lists four custom pieces; obtain the correct CAD revision and printer quote. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### Layout-dependent × STEMMA QT / Qwiic I²C cables and Pi connection - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Wire keys, encoder and fader. - Notes: Assign each board a distinct I²C address; exact harness lengths/count are not published. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 per peripheral × USB cables for motor assembly and audio interface - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Connect peripherals. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 × Boot microSD card - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Raspberry Pi OS and application. - Notes: Capacity unspecified. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 1 × Pi / motor power system - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Power the device. - Notes: Size for the Pi and peripheral load; the motor’s power path must be checked separately. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### CAD-dependent × Fasteners, spacers and encoder knob - Requirement: Required - Quantity basis: Planning quantity for one build; check the selected configuration - Purpose: Mechanical assembly. - 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 ### 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-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Source: https://x.com/i/status/2098072497182666987 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 credits Codex with software and motor firmware as well as CAD and an assembly animation. They report assembling a physical prototype after the animation; motor feel and mechanical details are still being tuned. ## Before you build Creator says physical prototype assembled after the linked animation. Motor feel and mechanical fit remain under development; not a finished retail product. The source image is an assembly visualization, not a photograph of the later assembled prototype. ## Sources - Original build: https://youcanjustbuildthings.openai.chatgpt.site/projects/submission-61f7edd92afacdf02d4f2ce9775bc6754d592451748cb2476cbd6725c03624b0 - Supporting source: https://x.com/i/status/2098072497182666987 Source reviewed 2026-11-04. Not hands-on tested.