# PCB Design Challenges **URL:** https://sierraconnect.protoexpress.com/c/pcb-design-challenges/79.md [Latest](https://sierraconnect.protoexpress.com/latest.md) · [Categories](https://sierraconnect.protoexpress.com/categories.md) · [Tags](https://sierraconnect.protoexpress.com/tags.md) --- ## [About the PCB Design Challenges category](https://sierraconnect.protoexpress.com/t/about-the-pcb-design-challenges-category/4267)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 0
--- ## [SPOT THE FLAW: Some connections are getting a little too friendly](https://sierraconnect.protoexpress.com/t/spot-the-flaw-some-connections-are-getting-a-little-too-friendly/4623)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 2\ **Last updated:** [November 6, 2026, 6:25pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-some-connections-are-getting-a-little-too-friendly/4623 "2026-11-06T18:25:23Z")
Answer on Friday… --- ## [SPOT THE FLAW: Not all copper voids are harmless](https://sierraconnect.protoexpress.com/t/spot-the-flaw-not-all-copper-voids-are-harmless/4611)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [October 30, 2026, 5:30pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-not-all-copper-voids-are-harmless/4611 "2026-10-30T17:30:49Z")
Answer on Friday… --- ## [SPOT THE FLAW: Sometimes, giving copper more space is the only way to avoid trouble](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-giving-copper-more-space-is-the-only-way-to-avoid-trouble/4592)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [October 23, 2026, 9:18pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-giving-copper-more-space-is-the-only-way-to-avoid-trouble/4592 "2026-10-23T21:18:38Z")
Answer on Friday… --- ## [SPOT THE FLAW: Two paths, two very different jobs](https://sierraconnect.protoexpress.com/t/spot-the-flaw-two-paths-two-very-different-jobs/4579)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [October 16, 2026, 7:37pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-two-paths-two-very-different-jobs/4579 "2026-10-16T19:37:39Z")
Answer on Friday… --- ## [SPOT THE FLAW: Something important may have lost its way back](https://sierraconnect.protoexpress.com/t/spot-the-flaw-something-important-may-have-lost-its-way-back/4554)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [October 9, 2026, 10:14pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-something-important-may-have-lost-its-way-back/4554 "2026-10-09T22:14:21Z")
Answer on Friday… --- ## [SPOT THE FLAW: This trace might be asked to do more than it can handle](https://sierraconnect.protoexpress.com/t/spot-the-flaw-this-trace-might-be-asked-to-do-more-than-it-can-handle/4513)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [September 25, 2026, 7:16pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-this-trace-might-be-asked-to-do-more-than-it-can-handle/4513 "2026-09-25T19:16:31Z")
Answer on Friday… --- ## [SPOT THE FLAW: Your test engineer might have a complaint](https://sierraconnect.protoexpress.com/t/spot-the-flaw-your-test-engineer-might-have-a-complaint/4491)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [September 18, 2026, 9:45pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-your-test-engineer-might-have-a-complaint/4491 "2026-09-18T21:45:55Z")
Answer on Friday… --- ## [SPOT THE FLAW: This design may look fine before the heat is on](https://sierraconnect.protoexpress.com/t/spot-the-flaw-this-design-may-look-fine-before-the-heat-is-on/4468)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [September 11, 2026, 7:51pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-this-design-may-look-fine-before-the-heat-is-on/4468 "2026-09-11T19:51:56Z")
Answer on Friday… --- ## [SPOT THE FLAW: Sometimes, the problem is the neighborhood](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-the-problem-is-the-neighborhood/4434)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [September 4, 2026, 6:26pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-the-problem-is-the-neighborhood/4434 "2026-09-04T18:26:05Z")
Answer on Friday… --- ## [SPOT THE FLAW: Look closely at the boundaries of the copper regions](https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-closely-at-the-boundaries-of-the-copper-regions/4416)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [August 28, 2026, 10:24pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-closely-at-the-boundaries-of-the-copper-regions/4416 "2026-08-28T22:24:30Z")
Answer on Friday… --- ## [SPOT THE FLAW: Something was left unfinished](https://sierraconnect.protoexpress.com/t/spot-the-flaw-something-was-left-unfinished/4388)
**Author:** [@rahuls](https://sierraconnect.protoexpress.com/u/rahuls)\ **Replies:** 1\ **Last updated:** [August 21, 2026, 5:23am UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-something-was-left-unfinished/4388 "2026-08-21T05:23:52Z")
Answer on Friday --- ## [SPOT THE FLAW: Look beneath the package](https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-beneath-the-package/4357)
**Author:** [@rahuls](https://sierraconnect.protoexpress.com/u/rahuls)\ **Replies:** 1\ **Last updated:** [August 14, 2026, 5:55am UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-look-beneath-the-package/4357 "2026-08-14T05:55:04Z")
Answer on Friday --- ## [SPOT THE FLAW: This trace is carrying more than just a signal](https://sierraconnect.protoexpress.com/t/spot-the-flaw-this-trace-is-carrying-more-than-just-a-signal/4335)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 2\ **Last updated:** [August 7, 2026, 8:27pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-this-trace-is-carrying-more-than-just-a-signal/4335 "2026-08-07T20:27:24Z")
Answer on Friday… --- ## [SPOT THE FLAW: Something isn't quite... positive](https://sierraconnect.protoexpress.com/t/spot-the-flaw-something-isnt-quite-positive/4317)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 2\ **Last updated:** [July 31, 2026, 7:17pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-something-isnt-quite-positive/4317 "2026-07-31T19:17:22Z")
--- ## [SPOT THE FLAW: Sometimes, taking too many shortcuts actually makes the journey worse](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-taking-too-many-shortcuts-actually-makes-the-journey-worse/4283)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 2\ **Last updated:** [July 27, 2026, 8:09pm UTC](https://sierraconnect.protoexpress.com/t/spot-the-flaw-sometimes-taking-too-many-shortcuts-actually-makes-the-journey-worse/4283 "2026-07-27T20:09:53Z")