00 / assembled architecture
One machine. Two leaves.
The floating object settles into two independently powered leaves. Orange holds the CM5, front spatial camera and projector; clear holds persistent e-paper and its own low-power controller.
Forever Book / spatial hardware
Forever
Book
An orange computer and a clear persistent page: joined as a book, useful apart, able to draw from your hands onto a wall.
Architecture below
Loading CAD assembly
01 / display stack
Two pages. Two behaviours.
The new official 10-inch Raspberry Pi Touch Display 2 delivers ten-finger input at 1200 x 1920. The 10.3-inch Waveshare e-paper page holds its image without continuous power.
02 / compute + air
CM5, cooled sideways.
An 8 GB / 64 GB Compute Module 5 sits on a custom 55 x 41 mm low-profile carrier. A 25 mm blower drives air across a 5.5 mm side-flow spreader through the orange-leaf plenum.
03 / senses + sound
Your hand becomes the stylus.
An IMX708 Camera Module 3 Wide sensor head sits between two compact tracking cameras on the orange face. MediaPipe runs on the CM5; a VL53L5CX checks hand and wall distance. Fingerprint identity and the yellow Pimoroni I2S amp complete the interface.
04 / solar + isolated power
Each leaf powers itself.
Two integrated Voltaic P105 skins feed two protected 3 Ah pouch targets through low-profile BQ24074 / MAX17048 boards. Clear keeps pages and sync alive on a Pico 2 W; orange keeps the only GPU.
05 / projection + service
The fold aims the projector.
The 33 x 30.5 x 13.6 mm DLP2000 light engine leaves through the orange top edge. Its driver, blower, cradle, heatshield and shutter separate in place; pull one hinge pin and unplug one USB-C bridge to release both pads.
Scroll through the build
System architecture
Every function has a physical address.
The orange leaf owns compute, gesture input and projected output in one reference frame. The clear leaf owns the persistent page. Each has solar, battery and control; the convex hinge provides book, tent and projector-aim geometry.
Touch computeCM5 / DSI / Wi-Fi 5 / Bluetooth 5 LE / RTC
Persistent page10.3-inch e-paper / IT8951 / SPI / zero-power hold
Hand + quick picIMX708 wide sensor / companion tracking pair / MediaPipe on CM5
Dual solar power2 x P105 / 2 x 3 Ah target / BQ24074 + MAX17048 per leaf
Edge projectionDLP2000 / 20-30 lm / top-edge lens / fold-angle aiming
Release spineConvex barrel / pull pin / removable USB-C bridge / tent mode
- Leaf size
- 172 x 258 mm each, 11 mm corner radius
- Open body
- 361.6 x 258 x 25.1 mm broad body; 31.7 mm at local controls
- Touch page
- Raspberry Pi Touch Display 2, 10-inch, 1200 x 1920
- Paper page
- Waveshare 10.3-inch e-paper, 1872 x 1404
- Compute
- CM5 wireless, target 8 GB RAM and 64 GB eMMC
- Spatial
- Front tracking pair plus CM5-hosted MediaPipe hand landmarks
- Quick pic
- IMX708 Camera Module 3 Wide sensor on a custom FPC head
- Presence
- VL53L5CX 8 x 8 multizone ToF, up to 4 m ranging
- Solar
- Two integrated Voltaic P105 6 V / 5.5 W skins, 148 x 223 x 3.6 mm
- Projection
- TI DLP2000 engine, 30.5 x 33 x 13.6 mm, lens through orange top edge
- Thermal
- 5.5 mm CM5 spreader plus separate 25 mm compute and projector blowers
- Detachment
- 4.3 mm pull-pin hinge plus removable USB-C power/data bridge
One hinge / three useful objects
A book when held. A frame when placed. Two pads when released.
Convex tent mode
The alternating barrel spine rotates past flat. Both solar backs become the feet, while the orange top-edge projector follows the fold angle for physical aim.
Independent leaves
Pull the pin and unplug the short bridge. Orange remains the CM5 computer; clear remains a solar e-paper notebook on its Pico 2 W controller.
Material direction
Orange compute. Clear evidence.
The left shell carries the warm register of the original Fredda object. The right shell exposes batteries, camera, and e-paper logic rather than hiding the construction inside anonymous black plastic.
Bill of materials / checked 2 Aug 2026
A prototype you can actually price.
Australian sources are preferred where the exact part exists. Specialist camera and newly released display items route to the manufacturer until local stock stabilises.
| Subsystem | Selected part | Price | Source |
|---|---|---|---|
| Compute | Compute Module 5Wireless / 8 GB / 64 GB eMMC target | A$234.95 | Core Electronicsspecial-order variant |
| Carrier | Custom low-profile CM5 carrier55 x 41 mm target; CM5-NANO-B remains the bench breakout | A$80 PCB budget | Waveshare referencecustom board required for enclosure |
| Touch | Raspberry Pi Touch Display 210-inch / 1200 x 1920 / ten-finger touch | US$80 list | Approved resellersreleased 22 Jul 2026 |
| E-paper | Waveshare 10.3-inch HAT (D)1872 x 1404 / IT8951 controller | A$294.95 | Core Electronicslead-time item |
| Hand + quick pic | Raspberry Pi Camera Module 3 WideIMX708 / autofocus / custom FPC sensor head / MediaPipe on CM5 | A$62.00 | Core Electronicsstandard module for optics and bench proof |
| Tracking pair | Compact mono sensor pairCustom top-bezel carrier; optional after single-camera gesture proof | A$60 budget | Raspberry Pi camera docssensor selection hold |
| Presence | Pololu VL53L5CX ToF carrier8 x 8 zones / I2C / up to 4 m | A$33.75 | Core Electronicslocal stock |
| Identity | DFRobot Gravity ID809508 dpi / I2C / 80 fingerprints | A$42.17 | Little BirdAustralian supplier |
| Audio | Pimoroni Audio Amp SHIMYellow PIM541 / I2S / mono 3 W | A$21.55 | Core Electronicslocal stock |
| Clear controller | Raspberry Pi Pico 2 WIndependent e-paper, clock, Wi-Fi and Bluetooth controller; no second GPU | US$7 list | Raspberry Piapproved reseller route |
| Cooling | 5.5 mm spreader + two 25 mm blowersSeparate CM5 and projector air paths | A$35 budget | Core Electronicsfinal blower calliper gate |
| Solar | 2 x Voltaic P105 6 V / 5.5 W ETFE panels148 x 223 x 3.6 mm integrated rear service skins | US$70 pair | Voltaic Systemsdirect order; 66,008 mm2 pair area |
| Power | 2 x BQ24074 / MAX17048 low-profile boardsOne charger, gauge and 5 V boost domain per leaf | A$160 PCB + bench budget | Core Electronicscustom board after dev-board proof |
| Projector | TI DLP LightCrafter Display 2000 EVM30.5 x 33 x 13.6 mm engine integrated in orange top edge | A$247.67 | DigiKey AU20-30 lm; heatsink required at high current |
| Cells + hardware | 2 x protected 1S 3 Ah pouch targetsOne removable pack per leaf; measured cells required before final print | A$100 budget | Altronics Perthwalk-in hardware; battery supplier qualification hold |
Thermal + service logic
Heat never crosses into the cell bay.
- Outer-edge intake feeds the 25 mm blower beneath the orange touch page.
- Side-flow air crosses the 5.5 mm CM5 spreader and exits into the convex spine.
- The DLP2000 engine has its own 25 mm blower and top-edge exhaust.
- Each battery is thermally isolated behind its own removable P105 solar skin.
- Each leaf has an independently switched charge, gauge and 5 V power domain.
- Side-entered M2.5 screws, one pull pin and one USB-C bridge release every service boundary.
CAD + fabrication package
STEP first. Printer formats second.
The complete architecture and exploded assembly remain editable STEP files. Each printed casing part also ships as STEP, STL, and 3MF.
Complete technical architectureSTEP / 361.6 x 258 mm open bodyrequest STEP
Exploded technical architectureSTEP / visual review staterequest STEP
Tabletop tent architectureSTEP / 60 + 60 degree fold staterequest STEP
Detached independent leavesSTEP / pin and USB-C bridge removedrequest STEP
Left orange leaf tubSTEP + STL + 3MFrequest 3MF
Left orange front bezelSTEP + STL + 3MFrequest 3MF
Right clear leaf tubSTEP + STL + 3MFrequest 3MF
Right clear front bezelSTEP + STL + 3MFrequest 3MF
Dual-leaf removable battery traySTEP + STL + 3MF / print tworequest 3MF
Integrated DLP2000 engine cradleSTEP + STL + 3MFrequest 3MF
Orange top-edge projector shutterSTEP + STL + 3MFrequest 3MF
Projector graphite heatshieldSTEP / cut part, not resin printedrequest STEP
Print and assembly specificationmaterials / tolerances / validation gatesrequest spec
CAD design briefv1.3 architecture / assumptions / hold pointsrequest brief
Hardware BOM + local sourcingv1.2 pricing / Perth route / interface maprequest BOM
Parametric CAD sourcebuild123d Python / all generated statesrequest source
The object before the teardown.
Seedance product study using the orange and clear reference direction. The engineering package above now replaces the film's internal assumptions.
06 / future state
one more world.
The finished object leaves the drawing and meets everything it was built to keep.
