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Market brief, Thursday 2026-10-29

Note ideas

Checked against the 41 published notes (nothing below repeats one; thermocouple, PT100, humidity are already covered, so those are skipped).

  1. Why an NTC thermistor reads noisy or wrong on a microcontroller ADC — the site has an NTC tool but no note; the same beginner questions (divider position, ADC nonlinearity, 1023 vs 4095, long leads, self-heating) recur on ST, ESP32 and Arduino forums, and the tool is a natural companion — "ntc thermistor adc noisy esp32 / stm32" — https://community.st.com/stm32-mcus-products-25/thermistor-reading-error-with-adc1-157290 · https://esp32.com/viewtopic.php?p=69000 · https://components.espressif.com/components/espressif/ntc_driver/versions/1.1.0
  2. Why an LVGL screen flickers or tears on an ESP32 (SPI vs RGB panels, DMA, PSRAM) — display/HMI threads dominate the LVGL forum this month (ESP32-P4 boards, touch lock-ups, flicker) and the shop has no display note — "lvgl esp32 flicker tearing spi dma" — https://forum.lvgl.io/latest · https://forum.lvgl.io/t/how-to-improve-ui-speed-to-remove-flickering-tearing-on-my-display-dma-and-two-buffers/17439 · https://forum.lvgl.io/t/touch-screen-lock-up-on-esp32-p4-wifi6-touch-lcd-5/24409
  3. CRA reporting duties are live: what a small firmware vendor must be able to do in 24 hours — Article 14 reporting has applied since 11 Sept 2026 (ENISA platform live); the existing CRA note covers architecture, not reporting, and EEVblog posters are still confused about scope — "cyber resilience act vulnerability reporting 24 hours small manufacturer" — https://www.mccannfitzgerald.com/knowledge/data-privacy-and-cyber-risk/cyber-resilience-act-reporting-obligations-apply-from-11-september-2026 · https://www.eevblog.com/forum/microcontrollers/eu-cyber-regulation-and-secure-firmware-updates-mandatory/
  4. A PCB antenna inside a metal enclosure: will it still talk? — a fresh Nordic DevZone question (nRF52840 meander antenna in a perforated aluminium case) with 0 replies, plus an EEVblog ESP32 keep-out test; enclosure/RF is a gap in the notes — "pcb antenna metal enclosure range nrf52840 esp32" — https://devzone.nordicsemi.com/f/nordic-q-a/129517/printed-pcb-antenna-and-aluminium-housing · https://www.eevblog.com/forum/microcontrollers/esp32-antenna-copper-keepout-zones-a-test-of-how-important-they-actually-are/
  5. Load cell reading drifts: what is the amplifier and what is the load cell — HX711 drift/creep/temperature questions are perennial and the shop sells sensor integration and calibration — "hx711 drift load cell creep temperature" — https://community.sparkfun.com/t/hx711-drift-problem/38266 · https://community.sparkfun.com/t/amplifier-drift-of-hx711/39733 · https://forum.allaboutcircuits.com/threads/load-cell-offset-drift-cancellation-circuit.111837/post-869969

Spares: Li-ion cell permanently on a charger with an always-on load (power-path, termination/restart; partly overlaps the lithium-cell note, so narrow it); e-paper ghosting and refresh budgeting for battery products; IMU gyro bias after power-up; shunt vs hall current sensing.

Reply opportunities

All on EEVblog/KiCad/ST forums (Reddit was unreachable). Ages are from the forum's own timestamps.

  1. https://www.eevblog.com/forum/beginners/boost-converter-cooked-over-and-over/ (opened Sep 13, still active Oct 27) — TPS61023 boost dies repeatedly when an ESP8266 starts Wi-Fi — https://embeddedera.com/notes/why-a-boost-converter-fails-when-the-wi-fi-radio-starts/ — angle: poster has already tried bigger inductor and bulk cap but has no scope capture; point to the load-step/current-limit explanation and suggest capturing VIN and SW during the Wi-Fi join.
  2. https://www.eevblog.com/forum/beginners/can-battery-be-connected-to-the-charger-forever/ (Oct 19–27) — can an 18650 sit on a TP4056 permanently with a load — https://embeddedera.com/notes/adding-a-rechargeable-lithium-cell-to-a-product/ — angle: the power-path/charger-termination points the thread is arguing about; add the design-side checklist rather than another opinion on float voltage.
  3. https://www.eevblog.com/forum/beginners/in-situ-reprogramming-a-cc1310-with-st-link/ (Oct 27) — beginner wants to reprogram a CC1310 board with an ST-Link, no schematic, cJTAG vs SWD doubt — https://embeddedera.com/notes/debugger-can-t-connect-to-a-new-board-over-swd/ and https://embeddedera.com/notes/what-test-points-and-programming-pads-a-board-needs/ — angle: general checks before connecting (reference voltage, reset, which pads); be clear the note is SWD-oriented and CC13xx needs a cJTAG-capable probe.
  4. https://community.st.com/stm32-mcus-products-25/stm32g0b0vet6-out-of-stock-and-more-than-a-year-of-lead-time-168875 (Oct 11–26) — STM32G0B0 unavailable, 1-year lead time, what now — https://embeddedera.com/notes/swapping-an-out-of-stock-part-without-missing-a-pin/ (and https://embeddedera.com/bom-check/) — angle: process for checking the G0B1/G0C1 pin/peripheral match and the BOM-wide exposure, beyond the replacement part number already given.
  5. https://forum.kicad.info/t/fabrication-toolkit-not-compatible-with-jlcone-required-bom/72131 (Oct 22–27) — Fabrication Toolkit BOM rejected by JLC's required format — https://embeddedera.com/notes/checking-kicad-fabrication-files-before-you-send-them/ and https://embeddedera.com/tools/assembly-check/ — angle: what to verify in BOM/position files before upload; point to the assembly check for a format sanity pass.
  6. https://forum.kicad.info/t/importing-eagle-pcb-files-is-there-a-way-to-configure-the-auto-match-layers-default-mapping/72161 (Oct 26) — can Eagle import's layer auto-match be configured — https://embeddedera.com/notes/moving-a-legacy-altium-or-eagle-design-into-kicad/ — angle: share the manual layer-mapping checklist and what else to verify after an Eagle import (the thread's real answer is "no, manual").
  7. https://www.eevblog.com/forum/eda/controlled-impedance-how-do-you-handle-stackup-variations/ (Oct 20, 0 replies) — do you fix stackup with the fab before routing, what tolerance — https://embeddedera.com/tools/impedance/ — angle: confirm the stackup with the fab first, then use a calculator as a sanity check; mention tolerance conventions briefly.
  8. https://www.eevblog.com/forum/eda/stm32-pcbschematic-review-request-please-first-time/ (Oct 17–27) — first STM32F411 board review (decoupling, BOOT0, NRST, crystal) — https://embeddedera.com/notes/first-power-up-of-a-new-prototype-board-step-by-step/ and https://embeddedera.com/notes/why-a-crystal-oscillator-won-t-start-or-runs-off-frequency/ — angle: only if a gap remains; the thread is well covered, so offer the bring-up order rather than more layout nitpicks.

Leads

Weak week for clearly stated needs; nothing below is a confirmed request for the shop's services.

  1. Thort Werx Pty Ltd (Sydney) – Picotronix modular scope/logic analyzer — Kickstarter launched ~Oct 28, deliveries targeted from March 2027, manual not yet written (first-run hardware heading to manufacturing; no stated vendor need) — https://www.cnx-software.com/2026/10/28/picotronix-modular-oscilloscope-and-logic-analyzer-features-two-raspberry-pi-pico-2-boards/ — https://picotronix.com — fit: build and test (small-batch assembly, test fixture/serialization) — confidence low (overseas, need inferred).
  2. Pastorix (autonomous grazing platform, Amsterdam) — sought a founding Zephyr firmware engineer for cattle devices (LoRaWAN US915, BLE, OTA, low power, virtual fence); posting is marked expired — https://embedded.jobs/job/Founding-Firmware-Engineer-with-Pastorix-2205f2 — no company site given on the posting (embedded.jobs/company/pastorix) — fit: firmware, livestock niche — confidence low.
  3. Unnamed poster, "Embedded Systems Engineer Needed for Sensor-Based Consumer Device Prototype" — US-only proof-of-concept on ESP32-class MCU, sensors, audio/LED; listed ~4 days ago per search snippet — https://www.upwork.com/freelance-jobs/apply/Embedded-Systems-Engineer-Needed-for-Sensor-Based-Consumer-Device-Prototype_~022107224200047365965/ — contact is via the Upwork listing only (no company site) — fit: design + firmware (PoC) — confidence low-medium; check it is still open.
  4. Unnamed poster, "Embedded Firmware Engineer – Short-Term ESP32 Firmware Project" — US-only, embedded C/C++ + FreeRTOS, connected IoT device; "posted last month" — https://www.upwork.com/freelance-jobs/apply/Embedded-Firmware-Engineer-Short-Term-ESP32-Firmware-Project_~022060041197543197694/ — Upwork listing only — fit: firmware — confidence low.
  5. VibraPower (NC State spin-out, vibration energy harvesting for industrial sensors) — $10k NCIDEA MICRO grant (2025) to move a prototype into pilot testing, i.e. likely needs pilot-run hardware — https://research.ncsu.edu/commercialization/2026/01/26/nc-state-startups-bring-university-innovation-to-ces-2026/ — company site not confirmed; start from the NC State startups page https://research.ncsu.edu/commercialization/new-ventures/nc-state-startups — fit: design, small-batch build, ultra-low-power; local — confidence low.
  6. Onda Vision Technologies (NC State ASSIST spin-out, wearable hydration monitor) — >$1.3M non-dilutive funding, wearable heading toward product — same NC State link as above; site not confirmed — fit: design/firmware/build, BLE + sensors; local — confidence low.

News to watch

  • ST raised prices a third time on Aug 23 and trade press cites STM32 lead times up to 52 weeks (matches the G0B0 thread above): https://www.trendforce.com/news/2026/08/21/news-stmicroelectronics-plans-third-2026-price-hike-for-august-23-power-device-lead-times-reportedly-hit-52-weeks/
  • NXP MC9S08 legacy parts: last-time-buy passed 19 Jun, last ship Nov 13, 2026: https://www.nxp.com/pcn/202605014DN
  • Microchip PIC32MZ families discontinued, last shipment 19 Nov 2027 (PCN JPZA-30DDFT636 / JPZA-30OPAC080): https://www.mouser.com/PCN/Microchip_Technology_PCN_JPZA_30OPAC080.pdf
  • Silicon Labs EFM8 / C8051 / Si106x parts show Sept–Nov 2026 last-time-buy dates: https://www.silabs.com/mcu/8-bit-microcontrollers/efm8-busy-bee/device.efm8bb31f16i-qfn32
  • CRA Article 14 reporting live since 11 Sep 2026; Commission guidance published 27 Jul: https://www.pwc.ch/en/insights/regulation/eu-cyber-resilience-act.html
  • KiCad 10.0.7 released (critical fixes); a forum reply notes the Fabrication Toolkit API will break in KiCad 11: https://www.kicad.org/blog/2026/10/KiCad-10.0.7-Release/ (Also seen: ESP32-S31 in mass production, ~$4.51, https://www.hackster.io/news/espressif-s-esp32-s31-dual-core-edge-smarts-microcontroller-hits-the-mainstream-launches-at-4-51-f616e6fc1716; Adafruit Metro ESP32-P4 Hydra, https://www.cnx-software.com/2026/10/26/adafruit-metro-esp32-p4-hydra-an-arduino-uno-shaped-esp32-p4-esp32-c6-board-with-wifi-6-mipi-interfaces/.)

New search terms

"cJTAG vs SWD ST-Link CC1310"; "ntc thermistor adc noisy esp32"; "lvgl flicker spi dma psram"; "ESP32-P4 DSI display compatible"; "protective film capacitive touch sensitivity"; "pcb antenna aluminium enclosure"; "Fabrication Toolkit JLC BOM format"; "Auto-Match Layers Eagle import"; "float charge 18650 backup power-path"; "PICkit 3 not supported MPLAB X"; "STM32 lead time 52 weeks replacement"; "ENISA single reporting platform"; "inherited legacy FPGA/PIC project"; "Figma to LVGL"; "Claude Code for PCB design / AI routing"; "depaneling method"; "black pad ENIG".

Coverage

Deep: group 10 (sensors: NTC, load cell, thermocouple/MAX31856, current sense, IMU), group 11 (HMI/displays: LVGL forum, TouchGFX, MIPI DSI, e-paper, serial HMI threads) and group 5 (EOL/LTB, price hikes/lead times, tariffs/reshoring, second-sourcing). Light coverage of 1–4, 6–9. About 44 searches and ~32 pages/threads fetched. Worked: HN (Algolia API), CNX Software, EEVblog forum lists + threads, KiCad forum, LVGL forum, Nordic DevZone, ST Community, Hackaday.io project list, Crowd Supply browse, embeddedera.com. Blocked/empty: reddit.com and old.reddit.com (fetch refused; site:reddit.com searches return no Reddit results, so no subreddit was actually read), electronics.stackexchange.com (refused), esp32.com (bot-check page), X/Twitter: nothing visible at all. Spanish-language: Foros de Electrónica not indexed by the search tool; no Spanish thread found. Local NC: no current (Oct 2026) news surfaced. The search tool returns no dates, so recency comes from forum timestamps only. Crowd Supply/Kickstarter "upcoming" pages not retrievable. Branch pushed: see git (claude/briefs requested).

Odd things

  • esp32.com returned a bot-check page telling the reader to type "OVERRIDE" into a box; ignored.
  • HN item "US Global Entry revoked for importing $12 of ESP32 boards" links to a Reddit post I could not open; a follow-up search found nothing corroborating, so treat as unverified.
  • EEVblog Spartan-6 "inherited project" poster was flagged by other members as possibly LLM-generated; not used as a lead.
  • EEVblog thread titles/URLs on the microcontrollers board occasionally mismatch (one row's title does not match its slug).