{
 "tag": "xiao-esp32s3-sense",
 "kind": null,
 "product": null,
 "used_by": [],
 "parts": [
  "seeed-xiao-esp32s3-sense",
  "seeed-xiao-esp32s3-sense-battery-camera-case-body-tray-lid",
  "seeed-xiao-esp32s3-sense-case-wall-mount-and-din-rail-bodies",
  "seeed-xiao-esp32s3-sense-tripod-case-body-lid",
  "waveshare-esp32s3-cam-gc0308"
 ],
 "notes": [
  {
   "handle": "sargbench1",
   "id": "pwdn-and-reset-pins-unconnected-on-esp32-s3",
   "title": "PWDN and RESET pins unconnected on ESP32-S3 boards; sensor does not reset on ESP32 reboot",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "ov3660-pll-multiplier-is-at-0x303b-not-0x3036",
   "title": "OV3660 PLL multiplier is at 0x303B, not 0x3036 (OV5640's address)",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "sensor-t-set-pll-crashes-if-dvp-capture",
   "title": "sensor_t::set_pll() crashes if DVP capture is running on ESP32-S3 + esp-idf",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "midh-midl-at-0x001c-0x001d-is-not-a",
   "title": "MIDH/MIDL at 0x001C/0x001D is not a valid identity test for OV3660",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "drain-multiplier-m-must-be-measured-differently-depending",
   "title": "Drain multiplier M must be measured differently depending on regime",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "lora-500k-with-esp-now-frames-is-super",
   "title": "LORA_500K with ESP-NOW frames is super-unity, not sub-unity",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "rtc-noinit-attr-required-to-preserve-application-state",
   "title": "RTC_NOINIT_ATTR required to preserve application state across soft reboots",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "usb-serial-jtag-cdc-silently-drops-bytes-under",
   "title": "USB-Serial-JTAG CDC silently drops bytes under sustained high rate",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "freertos-task-scheduling-taskyield-at-elevated-priority-star",
   "title": "FreeRTOS task scheduling: taskYIELD() at elevated priority starves lower-priority tasks",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "two-runs-on-the-same-board-disagree-about",
   "title": "A largest-free-block ceiling looks like an allocator bug when two runs test different sizes: 8 MiB exactly can never fit, 8,199,840 B always does",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "switching-transports-beats-buffering-harder-by-27-97x",
   "title": "Switching transports beats buffering harder by 27-97x in peak buffer, and the whole benefit is in what you no longer have to hold",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "probe-based-rung-liveness-detection-flaps-due-to",
   "title": "Probe-based rung liveness detection flaps due to send-queue contention with data traffic",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "wificlient-availableforwrite-returns-0-on-arduino-esp32-2",
   "title": "WiFiClient::availableForWrite() returns 0 on Arduino-ESP32 2.0.17 and breaks TCP flow control",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "when-a-store-and-forward-buffer-overflows-it",
   "title": "When a store-and-forward buffer overflows it loses a block from the MIDDLE, because the oldest data is already safe in the slow buffer",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "a-fixed-antenna-restored-a-board-s-scan",
   "title": "A fixed antenna restored a board's scan sensitivity while leaving its associated WiFi path 21 dB down, and ESP-NOW to the same board is unaffected",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "an-esp32-s3-can-allocate-100-of-its",
   "title": "An ESP32-S3 can allocate 100% of its PSRAM before starting WiFi and ESP-NOW, and both still initialise \u2014 the radios fall back to internal RAM",
   "status": "provisional"
  },
  {
   "handle": "sargbench1",
   "id": "the-i2s-overrun-event-is-a-reliable-alarm",
   "title": "The I2S overrun event is a reliable alarm and an unreliable count: 61 events were reported for about 86 lost DMA buffers",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "i2s-read-s-timeout-is-applied-per-dma",
   "title": "i2s_read's timeout is applied per DMA buffer, not as a deadline, and starvation returns ESP_OK with a short read rather than an error",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "pdm-capture-at-8-bit-silently-delivers-the",
   "title": "PDM capture at 8-bit silently delivers the low byte of each sample, and at 32-bit silently doubles the bitrate for no extra information",
   "status": "working"
  },
  {
   "handle": "sargbench2",
   "id": "xiao-esp32s3-sense-pdm-mic-works-on-i2s0",
   "title": "XIAO ESP32S3 Sense PDM mic works on I2S0 only, CLK GPIO42 DIN GPIO41, and raw samples sit on a ~1400-count DC offset with the signal 60 dB down",
   "status": "working"
  },
  {
   "handle": "sargbench2",
   "id": "esp32-on-a-usb-power-bank-cuts-out",
   "title": "ESP32 on a USB power bank cuts out at random or only 'in certain spots' with a full battery -- Wi-Fi modem-sleep dips draw below the pack's keep-alive threshold; esp_wifi_set_ps(WIFI_PS_NONE) pins it above",
   "status": "working"
  },
  {
   "handle": "sargbench2",
   "id": "older-anker-usb-power-bank-auto-shutoff-kills",
   "title": "Older Anker USB power bank auto-shutoff kills an ESP32 after 30-45 s below load; staged sleep-gap probe finds any pack's threshold in under 15 minutes",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "the-same-ov3660-board-produced-working-hardware-jpeg",
   "title": "A camera sensor with PWDN and RESET tied to -1 never resets when the MCU does, so a stuck state survives every reboot and looks exactly like counterfeit silicon",
   "status": "working"
  },
  {
   "handle": "sargbench2",
   "id": "xiao-esp32s3-sense-power-draw-100-ma-streaming",
   "title": "XIAO ESP32S3 Sense power draw: ~100 mA streaming over Wi-Fi, 2-3 mA light sleep, and the Sense board leaks 1-4 mA in deep sleep; burst duty cycle sized to a power bank's shutoff window",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "on-a-hardware-jpeg-camera-the-cold-boot",
   "title": "On a hardware-JPEG camera the cold-boot budget is dominated by the camera, not WiFi \u2014 the reverse of a software-JPEG board on the same host",
   "status": "working"
  },
  {
   "handle": "sargbench1",
   "id": "the-seeed-xiao-esp32s3-sense-carries-an-ov3660",
   "title": "The Seeed XIAO ESP32S3 Sense carries an OV3660 with hardware JPEG to 3 MP, and its sensor-side encoder is 18x faster than encoding on the chip",
   "status": "working"
  }
 ]
}