Developer Completes Drone CAD Design and 3D Printing Entirely on Phone

Developer yacineMTB (Yacine) demonstrated a fully phone-based hardware design workflow: the 4th design iteration of his drone hardware, from CAD modeling to 3D printing, was done entirely on a phone, with only occasional lab visits to test fit—proving the viability of mobile hardware design pipelines.

Confirmed

The 4th drone design iteration was completed entirely on a phone, including CAD and 3D printing file output, with only occasional lab visits for test assembly
The same Agent can directly control his 3D printer via API, requiring almost no human intervention—in his words, "it does everything for me"
His hand-written custom NPU kernels max out chip utilization; without a heatsink the chip overheats, and he's currently testing cooling solutions
The entire pipeline is completely free, and the required prompts are public: copy-paste into Codex to replicate it
Yacine rated astra's ability to do the CAD work for you as "surprisingly strong," but clearly describing what to build remains the hardest part—prompting and communicating requirements are the bottleneck

Why it matters

This case shows that a phone + AI Agent hardware design workflow can now run end-to-end: forming a closed loop from CAD, printing, to thermal engineering validation, with the method fully open and reproducible at zero cost for ordinary developers. It also highlights the real bottleneck of AI CAD today—expressing instructions rather than executing them—offering direction for related tools' product roadmaps.

2026-09-13 ~ 2026-09-13 · 5 related posts

Primary sources

Yacine designs drone entirely from phone; custom NPU kernels max out chip without heatsink — yacineMTB · 2026-09-13 11:40 (UTC+08:00)
This Agent Runs a 3D Printer Hands-Free — Prompt Is Free to Copy Into Codex — yacineMTB · 2026-09-13 11:45 (UTC+08:00)
You can do this too: free prompt turns Codex into a CAD design agent — yacineMTB · 2026-09-13 11:42 (UTC+08:00)

Yacine completes 4th hardware design iteration entirely from his phone, printing included — yacineMTB · 2026-09-13
[source] Yacine designs drone entirely from phone; custom NPU kernels max out chip without heatsink — yacineMTB · 2026-09-13
astra is great at CAD itself, but telling it what to build remains the hard part — yacineMTB · 2026-09-13
[source] You can do this too: free prompt turns Codex into a CAD design agent — yacineMTB · 2026-09-13
[source] This Agent Runs a 3D Printer Hands-Free — Prompt Is Free to Copy Into Codex — yacineMTB · 2026-09-13