# Summary of #hplusroadmap IRC Discussion (Nov 10, 2009)

* A user mentioned building a RepRap 3D printer, indicating the channel's interest in open-source manufacturing technologies.

* Kanzure experimented with WordNet for conceptual clustering and keyword analysis, sharing screenshots and results, but concluded "wordnet conceptual clustering doesn't really work" after several attempts.

* Superkuh shared detailed information about building a transcranial magnetic stimulation (TMS) device, including component costs ($20-200 for pulse capacitor bank, ~$80 for microwave oven transformers) and design considerations like spark gap switching versus semiconductor switching.

* Superkuh shared images of his single-pulse discharge device with coils for peripheral nerve stimulation (http://superkuh.ath.cx/users/superkuh/Library/001-rTMS/), mentioning he had been considering building an rTMS device for about 5 years.

* A user shared a projects list (http://ybit.ath.cx/misc_docs/projects.txt) related to transhumanist technologies they planned to pursue personally.

* Discussion touched on CAPTCHA-breaking algorithms, with one user noting the ineffectiveness of noise in standard phpBB CAPTCHAs against their cleaning algorithm.