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FarmBot Genesis v1.8BUILD FOR THE EXPERIENCEOpenAstroExplorer v1.0BUILD FOR THE EXPERIENCEOpen Syringe Pump v4WORTH CONSIDERINGJubilee V2.2.2WORTH CONSIDERINGOpenBot DIYBUILD ITESP32 3-Axis Camera SliderWORTH CONSIDERING
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And is it worth it?

Know the cost, the tools and the difficult parts.

CAIBI assesses physical projects before you commit: what they demand, how building compares with buying, and where AI can help. Creator claims, our assessment and builder experience stay separate.

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Sesame Robot source photograph

Real projects.
Clearer decisions.
A more capable you.

FEATURED PROJECTSesame RobotOpen assessment →
SmartKnob
FEATURED ASSESSED BUILD

SmartKnob

A control whose physical feel is defined in software.

BUILD FOR THE EXPERIENCE
Known parts cost£74–£148Build total not establishedCreator allowance; complete BOM total not tallied
TimeTime-consuming advanced build
DifficultyAI help
Open assessment →
Basis & source

SmartKnob · Scott Bezek ↗

Buy price referencePrice not checkedNo priced alternative recorded

Time-consuming advanced build

The creator explicitly says the total is not yet fully tallied, but estimates a single build is probably under $200 and likely around $100 to $150 depending on fabrication and minimum-order quantities.

Excludes: Advanced soldering/rework tools; Minimum-order waste; Shipping from multiple suppliers.

Cost checked 4 Sep 2026.

Scott Bezek ↗
Sesame Robot

Sesame Robot

Print and program an eight-servo ESP32 quadruped.

WORTH CONSIDERING
Build estimate£37–£44Source estimate · high confidence
TimeWeekend+
DifficultyAI help
Open assessment →
Basis & source

Sesame Robot · Dorian Todd ↗

Buy price reference£214Petoi Bittle programmable robot dogRecorded 5 Sep 2026

Weekend+

Creator-published total parts range, with GBP shown as an approximate conversion.

Excludes: 3D printer ownership; Shipping; Optional batteries or upgrades.

Cost checked 4 Sep 2026.

Dorian Todd ↗
5-30 Minute Chair source photograph

AtFAB 5-30 Minute Chair

One plywood sheet becomes full-size CNC-cut furniture.

WORTH CONSIDERING
Build estimate£70–£180CAIBI estimate · low confidence
TimeNo reliable total published
DifficultyAI help
Open assessment →
Basis & source

5-30 Minute Chair source photograph · Filson & Rohrbacher ↗

Buy price referencePrice not checkedNo priced alternative recorded

The title is not a reliable total build-time estimate. The documented route includes material measurement, a test piece, CAM/toolpaths, CNC cutting, fit adjustment, finishing and assembly.

Allowance for one full plywood sheet, fasteners, finishing and modest CNC access. A commercial CNC service can cost more than the material itself.

Excludes: CNC machine ownership; High commercial cutting fees; Delivery of full-size sheet.

Cost checked 4 Sep 2026.

Filson & Rohrbacher / AtFAB ↗
Source parts layout for ImageGenCam

ImageGenCam

A Raspberry Pi camera with a Codex-assisted workflow.

BUILD IT
Build estimate£85–£105CAIBI estimate · medium confidence
TimeNot published
DifficultyAI help
Open assessment →
Basis & source

Source parts layout for ImageGenCam · OpenAI · Apache-2.0 ↗

Buy price referencePrice not checkedNo priced alternative recorded

Not published

Current representative prices for the published Raspberry Pi, display, camera, battery and storage parts. The source publishes the parts list but not a complete total.

Excludes: 3D printer ownership or print service; Shipping from multiple suppliers; Computer and OpenAI account.

Cost checked 4 Sep 2026.

OpenAI ↗

More assessed builds

Different ideas, tools and levels. Explore real projects from the CAIBI database.

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OpenBike Rev4 source photograph

OpenBike Rev4

CNC-cut wooden bicycle with printed parts.

WORTH CONSIDERING
Build estimate£350–£800CAIBI estimate · low confidence
DifficultyAI help
Open assessment →
Basis & source

OpenBike Rev4 source photograph · Arquimaña ↗

Buy price referencePrice not checkedNo priced alternative recorded

Not currently published by the source

Broad planning allowance for plywood/CNC fabrication, printed parts and conventional bicycle components. Local CNC access and reused cycle parts can move the result far outside this range.

Excludes: Owned workshop machinery; Premium drivetrain/wheels; Finishing labour and shipping.

Cost checked 4 Sep 2026.

Arquimaña / OpenBike ↗
Hadley Telescope

Hadley Telescope

Print and assemble a 114 mm reflecting telescope.

BUILD IT
Build estimate£74–£111Source estimate · high confidence
DifficultyAI help
Open assessment →
Basis & source

Hadley Telescope · Maff / Printables ↗

Buy price reference£194Sky-Watcher Heritage 130PRecorded 5 Sep 2026

Multi-day including printing; physical assembly is comparatively simple

Current source and builder evidence consistently place the usual build around $100 to $150 depending on optics, eyepieces and mount.

Excludes: Premium eyepieces; Upgraded focuser/finder; 3D printer ownership.

Cost checked 4 Sep 2026.

Maff / Printables ↗
OpenMower

OpenMower

Convert a compatible mower into an open robotic mower.

BUILD FOR THE EXPERIENCE
Known parts cost£602Build total not establishedCore hardware only; donor mower and RTK extra
DifficultyAI help
Open assessment →
Basis & source

OpenMower · Clemens Elflein ↗

Buy price reference£849Mammotion YUKA miniRecorded 5 Sep 2026

Weekend+

The published core-hardware figure is not an all-in build total. A compatible donor mower and RTK route are additional major costs.

Excludes: Donor robotic mower; RTK base/receiver where not included; Shipping and replacement mechanical parts.

Cost checked 4 Sep 2026.

Clemens Elflein ↗
OpenMANIPULATOR-X

OpenMANIPULATOR-X

An open robotic arm for learning and development.

WORTH CONSIDERING
Known parts cost£1,205Build total not establishedArm kit only; base and control hardware extra
DifficultyAI help
Open assessment →
Basis & source

OpenMANIPULATOR-X · ROBOTIS ↗

Buy price referencePrice not checkedNo priced alternative recorded

About 3 to 4 hours physical assembly, plus software and DYNAMIXEL setup

Current ROBOTIS arm-kit list price. The base plate and communication/control hardware can be additional.

Excludes: Base plate; U2D2/OpenCR route where not owned; Computer and optional end effectors.

Cost checked 4 Sep 2026.

ROBOTIS ↗
Shredder 3.3 build gallery photograph

Precious Plastic Shredder 3.3

A workshop machine for shredding sorted plastic.

BUILD FOR THE EXPERIENCE
Build estimate£650–£1,370CAIBI estimate · medium confidence
DifficultyAI help
Open assessment →
Basis & source

Shredder 3.3 build gallery photograph · Precious Plastic / One Army ↗

Buy price referencePrice not checkedNo priced alternative recorded

1-2 weeks is the current source estimate for the Shredder small 3.3 build. That assumes access to, or subcontracting of, the required metalworking, machining and electrical work.

Planning range for laser-cut steel, geared motor/drive, shaft/bearings, guarding and electrical hardware. Precious Plastic publishes the full BOM but not a stable global all-in 3.3 price; current comparable build estimates vary substantially by local fabrication.

Excludes: 40–100+ hours fabrication/debugging; Workshop machinery; Compliance/inspection costs; Shipping.

Cost checked 4 Sep 2026.

Precious Plastic / One Army ↗
Creator thumbnail showing the three-axis camera slider

ESP32 3-Axis Camera Slider

Build a motorised slider for controlled camera movement.

WORTH CONSIDERING
Known parts cost£110–£190Build total not establishedCore hardware only; custom fabrication and power extra
DifficultyAI help
Open assessment →
Basis & source

Creator thumbnail showing the three-axis camera slider · Daniel McKenzie / CNCDan ↗

Buy price reference£1,269Zeapon AXIS 100 Pro SS-E2PRecorded 5 Sep 2026

Multi-stage. The source does not publish a total build time.

Low-confidence planning allowance for the source-listed commodity mechanics and electronics plus three ordinary step and direction drivers. The creator publishes no all-in total and used spare 3D-printer parts. Custom laser cutting, folded and welded sheet, machined aluminium, pulley machining, printing, driver-specific power and shipping can dominate the actual first build.

Excludes: Laser-cut tripod plates; Folded and welded tilt bracket; Machined aluminium slider plate and pulley machining; 3D printing, filament or print service; Driver-specific power supply, connectors and cabling; Camera, tripods and quick-release hardware not already owned; Shipping, taxes, fabrication labour and assembly time.

Cost checked 5 Sep 2026.

Daniel McKenzie / CNCDan ↗

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