Skip to content

Market brief, Thursday 2026-10-15

Note ideas

  1. Section 301 exclusions for bare PCBs expire Nov 10: what a small-batch order costs and what to do — the 178 exclusions (bare 2- and 4-layer boards among them) lapse for entries on or after Nov 10, and vendor estimates put bare-board duty at about 35% combined, so prototype buyers need a plan this month (vendor figures, not official; verify with a customs broker) — "Section 301 PCB exclusion expire November 2026" / "PCB tariff small batch prototype" — https://greatlakescustomslaw.com/section-301-tariff-exclusions/ · https://resources.altium.com/p/tariff-reset-pcb-workarounds · https://www.nextpcb.com/blog/pcb-manufacturing-tariffs-2026-china-sourcing
  2. Swapping an out-of-stock part without missing the pin you didn't check (ECO checklist) — a KiCad forum thread this week describes an LDO swap with pins 2 and 3 reversed and a different Iq that DRC never flagged, and Microchip's ATSAME54 last-time-buy closes Nov 6 — "replace out of stock LDO different pinout checklist" / "ECO component substitution checklist" — https://forum.kicad.info/t/how-do-you-guys-usually-handle-ic-shortages-ecos-without-missing-dumb-pin-differences/71925 · https://www.mouser.com/PCN/Microchip_Technology_PCN_MFOL_25ZHDZ566.pdf
  3. Why a boost converter dies when the Wi-Fi radio starts (inductor saturation, input cap, layout) — a 24-reply EEVblog thread about a TPS61023 repeatedly dying under ESP8266 Wi-Fi bursts is a common pattern in battery ESP designs, and none of the published notes cover it — "boost converter keeps dying ESP32 wifi inductor saturation" — https://www.eevblog.com/forum/beginners/boost-converter-cooked-over-and-over/
  4. CR2032 and BLE: average current looks fine, the radio burst browns it out — the sleep-current note covers idle draw, not peak draw and cell internal resistance; reservoir capacitor sizing and brownout thresholds are the usual gap — "CR2032 BLE brownout reservoir capacitor" / "coin cell pulse current" — https://hubble.com/community/guides/designing-ble-products-for-coin-cell-operation-from-chip-selection-to-power-budget/ · https://devzone.nordicsemi.com/f/nordic-q-a/58176/low-power-beacon/235820 · https://devzone.nordicsemi.com/f/nordic-q-a/129334/how-are-you-automating-ppk2-measurements
  5. Controlled-impedance USB 2.0 (90 Ω) on a 4-layer board in KiCad: stack-up, width and spacing, routing — a beginner asked this on the KiCad forum yesterday and got only a link to the v10 docs, with no answer for v9 — "KiCad differential pair impedance 4 layer USB 90 ohm" — https://forum.kicad.info/t/diferential-pair-impedance-setup/72023

Spare ideas if one falls through: automating current measurement in CI or production test (PPK2 thread above); how the 2026 DRAM/NAND shortage affects eMMC and SPI flash sourcing (https://storageswiss.com/2026/05/06/memory-and-flash-prices-not-coming-down/); the CRA 24-hour reporting duty that began Sep 11 for small firms (https://www.mccannfitzgerald.com/knowledge/data-privacy-and-cyber-risk/cyber-resilience-act-reporting-obligations-apply-from-11-september-2026).

Reply opportunities

Reddit and Stack Exchange were blocked, so these come from the KiCad forum, EEVblog, Nordic DevZone and Hackaday. Fewer than eight genuine fits turned up.

  1. https://forum.kicad.info/t/how-do-you-guys-usually-handle-ic-shortages-ecos-without-missing-dumb-pin-differences/71925 (started Oct 9, active Oct 15) — how to avoid missing pinout/Iq differences when swapping a shortage part — https://embeddedera.com/notes/when-a-chip-revision-changes-but-the-part-number-doesn-t/ and https://embeddedera.com/notes/second-sourcing-the-spi-flash-on-a-microcontroller-board/ — angle: the thread already agrees on a side-by-side datasheet check, so offer the two or three extra checks from those notes (silent revisions, footprint-compatible but not function-compatible parts) as a addition to the ECO checklist sfzorin posted, not a pitch.
  2. https://www.eevblog.com/forum/beginners/a-pcb-that-looks-fine-in-cad-isnt-always-fun-to-assemble/ (Oct 10–12) — designing a board that passes DRC but is hard to assemble and debug — https://embeddedera.com/notes/pcb-layout-mistakes-that-only-show-up-at-assembly/ and https://embeddedera.com/notes/what-test-points-and-programming-pads-a-board-needs/ — angle: add the test point / programming pad / fiducial points the thread hasn't covered. Note the OP signs as part of a PCB manufacturer, so keep it factual and link-light.
  3. https://www.eevblog.com/forum/beginners/boost-converter-cooked-over-and-over/ (started Sep 13, so older than 14 days, but active through Oct 13) — TPS61023 keeps dying under ESP radio load — https://embeddedera.com/notes/first-power-up-of-a-new-prototype-board-step-by-step/ and https://embeddedera.com/notes/finding-why-a-device-resets-in-the-field/ — angle: a staged bring-up (current-limited supply, probe VIN and SW at power-on) is a way to find the cause without killing another IC. The OP's latest post lists fixes but not whether they worked.
  4. https://devzone.nordicsemi.com/f/nordic-q-a/129334/how-are-you-automating-ppk2-measurements (about 11 days old, 0 replies) — automating PPK2 current measurements for CI and production test, and what breaks — https://embeddedera.com/notes/writing-the-software-for-a-production-test-fixture/ and https://embeddedera.com/notes/sleep-current-higher-than-datasheet/ — angle: share how a fixture handles measurement and logging per unit, and the common reasons sleep current reads high. Answer the actual question.
  5. https://www.eevblog.com/forum/beginners/where-to-buy-(thin)-lipo-batteries/ (started 2023, bumped Oct 10) — sourcing thin LiPo cells for a wearable — https://embeddedera.com/notes/adding-a-rechargeable-lithium-cell-to-a-product/ — angle: shipping, protection circuit placement and testing for a wearable. Weak fit because the thread is old and well answered.
  6. https://hackaday.com/2026/10/15/a-thermal-camera-that-uses-webusb/ (comments, Oct 15) — a commenter asks why a serial-to-browser bridge needed inventing — https://embeddedera.com/notes/browser-based-firmware-flashing-without-an-installer/ and https://embeddedera.com/tools/ — angle: only if the comment thread stays active; explain the Web Serial/WebUSB tradeoffs and browser support honestly.
  7. https://www.eevblog.com/forum/beginners/a-pcb-design-from-beginning-to-end-not-jlcpcb/ (Oct 6–12) — OP lost a JLCPCB assembly order because the board was under the 10 mm minimum width — https://embeddedera.com/notes/what-to-send-for-a-pcb-assembly-quote/ and https://embeddedera.com/notes/checking-kicad-fabrication-files-before-you-send-them/ — angle: low priority. The thread is contentious and mostly settled, and the OP wants a design service for a 5×20 mm board, which is outside what a reply should chase.

Leads

Public listings of hardware work wanted were thin this run, because Reddit (r/forhire, r/hardwarestartups) was blocked. Treat these as soft.

  1. Bitmerse (Romu, tiny RP2354A USB board) — Crowd Supply campaign, $5,000 goal, shipping expected by end of April 2027; open-source hardware with files on GitHub; CNX says nothing about their manufacturing plans — https://www.cnx-software.com/2026/10/14/romu-tiny-raspberry-pi-rp2354a-usb-board/ — contact: the company's website was not given; use the Crowd Supply campaign page linked from that article — fit: Build and test (small-batch assembly, programming jig/test fixture), Design review — confidence: low (a crowdfunded board heading to manufacturing, but no stated need for outside help).
  2. VIEWE (4.3-inch ESP32-S31 display board with RS485 and CAN) — newly launched; shows ESP32-S31 designs are reaching products, but it is a module maker, not a buyer of services — https://www.cnx-software.com/2026/10/14/viewe-4-3-inch-esp32-s31-display-development-board/ — contact: not verified — fit: none yet; for the Firmware group it is a signal to watch — confidence: low. Listed for completeness, not worth outreach.

No high- or medium-confidence leads this run.

News to watch

  • Microchip ATSAME54N20A/P20A EOL: last date for bookings Nov 6 2026, last shipment May 6 2027 (PCN MFOL-25ZHDZ566) — https://www.mouser.com/PCN/Microchip_Technology_PCN_MFOL_25ZHDZ566.pdf. Also ATSAMW25H18 modules, last bookings Oct 30 — https://www.mouser.com/PCN/Microchip_Technology_PCN_JPZA_30DDFT636.pdf (summarised by the search tool; confirm the PCN number before citing).
  • Section 301 exclusions on bare PCBs lapse Nov 10 2026 unless USTR extends them; no renewal process was found open — https://greatlakescustomslaw.com/section-301-tariff-exclusions/
  • EU Cyber Resilience Act: reporting obligations (24-hour initial report for actively exploited vulnerabilities) have applied since Sep 11 2026, including to products already on the market; full obligations from Dec 11 2027 — https://www.mccannfitzgerald.com/knowledge/data-privacy-and-cyber-risk/cyber-resilience-act-reporting-obligations-apply-from-11-september-2026
  • DRAM/NAND shortage: lead times reported beyond 40 weeks with elevated prices expected through 2027 (analyst commentary; embedded-specific data was not found) — https://storageswiss.com/2026/05/06/memory-and-flash-prices-not-coming-down/
  • Espressif ESP32-S31 (dual-core RISC-V, Wi-Fi 6, BT 5.4, 802.15.4, Ethernet MAC) in mass production since late July; first third-party display board this week — https://www.espressif.com/en/news/ESP32_S31_Mass_Production · https://www.cnx-software.com/2026/10/14/viewe-4-3-inch-esp32-s31-display-development-board/
  • nRF Connect SDK 3.4 is an LTS release and the last branch to support nRF52 (per the release notes); KiCad 10.0.7 was released this week — https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrf/releases_and_maturity/releases/release-notes-3.4.1.html · https://forum.kicad.info/t/v10-0-7-released-yeah-what-about-ppa/71921

Local NC: I found no October 2026 Triangle hardware news. Searches returned only 2021–2023 items and generic ClearSens (NC State ultrasound wearable) coverage.

New search terms

  • "ECO" + "pin differences" / "drop-in replacement" LDO (KiCad forum)
  • "parts pairing" (right-to-repair laws in Washington and Colorado, 2026)
  • "automating PPK2" / "ppk2-api" / "PPK2 CI" (Nordic DevZone)
  • "channel sounding" nRF54L15 (Nordic DevZone)
  • "NFC wake-up wireless charging" nRF54L15
  • "via-in-pad" / "WLCSP routing KiCad"
  • "nice to work with" / "hard to assemble despite passing DRC"
  • "boost converter cooked" / "inductor saturation ESP8266 WiFi"
  • "faster BLE OTA ESP32" / "unconfirmed writes BLE OTA"
  • "abandonware app" + WebUSB (reason people give for browser tools)
  • "Section 301 exclusions" PCB; "de minimis" prototype PCBs
  • "CRA 24-hour reporting"; "harmonised standards CRA" (HN CRA thread)
  • "uMCP" / "UFS" feasibility (EEVblog beginner question)

Coverage

Deep: Design (group 1), Redesign and supply chain (group 5), Compliance and market shifts (group 6). Light but touched: Firmware (2), Software around hardware (3), Build and test (4), Niches (7), Local (8), Spanish (9).

About 40 web searches and 6 Hacker News API queries (hn.algolia.com worked), plus about 20 pages and threads opened: HN items 49520688, 49747290, 50056249 and 49848955 (first 100k characters of the last), 5 KiCad forum threads, 4 EEVblog threads, 2 Nordic DevZone threads, 2 Hackaday posts, 2 CNX pages and 1 Groundrun post. embeddedera.com/notes (29 notes) and /services loaded normally.

Blocked or empty: - Reddit (www, old, redlib mirror): blocked. Every r/ subreddit named in the brief is uncovered, including r/forhire, r/raleigh and r/bullcity. - Electronics Stack Exchange, including its API: blocked. - esp32.com: showed only a bot-check page. - The site: operator was ignored by the search tool, so targeted site searches returned general results. - X/Twitter: nothing surfaced. I could not see any of it. - Spanish-language communities (Foros de Electrónica, etc.): no threads surfaced in the searches. - Crowd Supply and Kickstarter listings: only secondhand mentions through CNX and search snippets. - Local NC news: nothing current found.

Several news items rest on search-tool summaries of vendor or law-firm pages, not primary sources. Tariff figures in particular are vendor estimates.

Branch: pushed to claude/briefs.

Odd things

  • esp32.com returned a bot-check page that told the reader to type "OVERRIDE" to continue. I ignored it, and the forum was not read.
  • The EEVblog "PCB that looks fine in CAD" thread was started by a poster who signs as part of a PCB manufacturer (PCBEXP), which reads like soft marketing in a general forum.
  • Some search results were SEO filler: a "forum" page on cascadespringsnature.org about Mexican PCB makers, and Audible podcast blurbs about hardware compliance. I did not rely on them.