Classic intermittent “popping” noise from this Presonus Eris 5 studio monitor speaker. Electrolytic Capacitors are suspect number one.

00:00 – Faulty Presonus Eris 5 speaker. Classic “popping” sound.

Forum: https://www.eevblog.com/forum/blog/eevblog-1714-presonos-eris-speaker-repair-(capacitor-pop)/

A look at the crazy ferrite core density in the Ampex 1600 16k x 18 bit word magnetic core memory from Ampex Memory Products Division, used in the Mitra 125S computer for the Spacelab program on the Space Shuttle.

00:00 – Magnetic core memory

Magnetic core simulator: https://nationalmaglab.org/magnet-academy/watch-play/interactive-tutorials/magnetic-core-memory/#:~:text=Magnetic%20core%20memory%20was%20developed,electric%20current%20in%20a%20circuit.

Forum: https://www.eevblog.com/forum/blog/eevblog-1713-crazy-density-magnetic-core-memory!/

A tour inside the brand new CSIRO Mobile Mission Control & Operations Centre, built inside a b-double truck. Dr Mark Dunn gives us a tour of the new fitout.

Purpose-built, the b-double trailer deploys into a fully operational mission control centre that can accommodate up to 30 mission operators, each supported by configurable multi-monitor stations and mission-status displays. Onboard, satellite, 4G, integrated radio and vibration-tolerant servers ensure connectivity, even in remote locations. The mobile Mission Operations Centre is powered by a battery-backed solar system with generator fallback, enabling sustainable, off-grid operation across Australia’s geographically dispersed launch sites.

Forum: https://www.eevblog.com/forum/blog/eevblog-1712-csiro-mobile-space-mission-control-centre/

YouTube have just released new AI video Shorts features built into the Youtube app itself. Let’s create an AI slop Short in minutes using Veo 3 and see what fresh new hell you’re in for on Youtube.

Forum: https://www.eevblog.com/forum/blog/eevblab-133-youtube-just-self-destructed-(ai-shorts)/

A walkaround of the show floor of the International Astronautical Congress IAC 2025 in Sydney

Forum: https://www.eevblog.com/forum/blog/eevblog-1711-international-astronautical-congress-iac-2025-walkaround/

More mailbag!

00:00 – Tennismatic saw my repair video!

Forum: https://www.eevblog.com/forum/blog/eevblog-1710-mailbag-tennismatic-breadboards-books-boost-converters/

Was supposed to be a regular mailbag with multiple items, but this Haasoscope Pro was a 1.5hrs of raw footage adventure I have edited down to 45min, warts and all. So no other items, just this.

Forum: https://www.eevblog.com/forum/oshw/haasoscopepro-affordable-open-source-open-hardware-2-ghz-oscilloscope!/

Another viewer question, can we identify this SMD component?

Forum: https://www.eevblog.com/forum/blog/eevblog-1708-whats-this-smd-part/

Dave’s Goal Zero Yeti 400 lithium ion battery failed. Repair time.

Forum: https://www.eevblog.com/forum/blog/eevblog-1707-repair-goal-zero-yeti-400-lithium-battery/

00:00 – Goal Zero Yeti 400 Battery failure

Is a wrist worn multimeter actually useful? A review of the CZDANG K8

Forum: https://www.eevblog.com/forum/blog/eevblog-1706-k8-wrist-worn-multimeter-review/