MC-J86: SSC378DE camera module with the 8MP 1/1.8 SC850SL sensor

Chip and memory
- SSC378DE; "MC-J86 is SSC378DE, not SSC338Q/G"
  (https://t.me/c/1809358416/291427, https://t.me/c/1809358416/286291,
  https://t.me/c/1166652144/83831)

Sensor
- SC850SL: the stock firmware ships
  squashfs-root/opt/ch/sc850sl_MIPI_30FPS_20230821.ko (measured, 2024-07 and
  2026-06) (https://t.me/c/1809358416/291403,
  https://t.me/c/1166652144/118366)
- Tino gives the SC850SL as 8MP, 1/1.8, 2um, BSL, 60fps "with kind of HDR"
  (https://t.me/c/1809358416/71808, https://t.me/c/1166652144/83831)
- Suggested for low light: "still big res, BSL, etc.. not bad."
  (https://t.me/c/1809358416/291199, https://t.me/c/1809358416/264655)

Interfaces and pinout
- The sensor runs on 4-lane MIPI; the stock load script does "insmod
  /opt/ch/sc850sl_MIPI_30FPS_20230821.ko chmap=1 lane_num=4" (measured)
  (https://t.me/c/1809358416/294904)
- "there's no WIFI module on board"; Tino thinks any Anjoy-compatible
  external USB module should work, connected via FFC to the extension board
  (https://t.me/c/1809358416/113083)

Quirks and fixes
- The stock firmware has no SC850SL IQ file: "only imx307 and
  gc4023_{day,night}.bin" (measured) (https://t.me/c/1809358416/293969)
- An AliExpress listing shows "SC850AI instead of SC850SL"; the firmware
  dump shows SC850SL (https://t.me/c/1809358416/291424,
  https://t.me/c/1809358416/291403)

Sourcing and price
- "J86 ~$25 on taobao (w/o lens)." (2026-04)
  (https://t.me/c/1809358416/286298)
- Taobao item 749553303002 (2024-09) (https://t.me/c/1809358416/113083)
- "MC-J86 is much harder to find on Taobao than the MC800S*" (2026-06)
  (https://t.me/c/1809358416/291626)

Variants, aliases and products built on it
- Positioned as a new replacement for the MC-K45 (2024-04)
  (https://t.me/c/1809358416/71808)
- One of several SSC378 boards on Taobao with different sensors, along with
  MC-A81 and FuHan FH81-PRO (https://t.me/c/1809358416/75133)

Disagreements
- Sensor: Tino wrote "8MP SSC378/SC810SL" in 2024-01 and "1/1.8 SC850AI" in
  2026-01; his other statements and the stock firmware dump give SC850SL
  (https://t.me/c/1809358416/51874,
  https://t.me/rubydigitalfpvvideolink/57502,
  https://t.me/c/1809358416/291403)