The Anpiz IPC-D3B53W-S is a cheap Amazon dome camera that turns out to be a surprisingly capable piece of hardware once you replace the stock firmware with OpenIPC<\/a>. Under the hood it runs a SigmaStar SSC377 (infinity6c)<\/strong> SoC with a SC4336P<\/strong> image sensor, capable of 2560×1440 at 30fps. Here’s everything you need to get it running.<\/p>\n\n\n\n The camera uses a GD25Q128C<\/strong> 16MB SPI NOR flash chip on the PCB. You do not need to desolder it \u2014 a SOIC-8 chip clamp works fine.<\/p>\n\n\n\n The camera should come up on your network via DHCP within about 30 seconds. Set a root password in the Web UI, then ssh in as root.<\/p>\n\n\n\n The stock firmware ships with a sensor-specific image quality binary<\/strong> ( Extract the file from the original firmware (or download my copy here<\/a>) and copy it to the camera. The easiest method if you only have SSH access (no SCP) is base64:<\/p>\n\n\n\n On your PC:<\/strong><\/p>\n\n\n\n On the camera via SSH:<\/strong><\/p>\n\n\n\n Then tell majestic to use it in Out of the box, OpenIPC only reserves 2MB of CMA memory<\/strong> for the video encoder. The SC4336P at 1920×1080 needs at least 6.2MB, which causes the encoder to fail silently and produce a solid pink image.<\/p>\n\n\n\n Increase the CMA reservation in the boot environment:<\/p>\n\n\n\n Reboot and verify:<\/p>\n\n\n\n This was the most involved part of the setup. The stock firmware doesn’t document its GPIO assignments anywhere obvious, so finding the right pins required extracting and analysing the firmware.<\/p>\n\n\n\n The key was finding The complete pin map for this camera:<\/p>\n\n\n\n The IR cut filter is a mechanical two-coil motor<\/strong> \u2014 it needs a brief pulse (~250ms) on one pin to switch to night position and a pulse on the other to return to day. Both pins sit at 0 between switches. The IR and white lights are PWM-controlled at a 50kHz period, not simple GPIO on\/off.<\/p>\n\n\n\n Add the ICR pins to To manually test the filter from the shell:<\/p>\n\n\n\n You should hear a faint click each time as the filter moves.<\/p>\n\n\n\n During setup we ran into a solid pink image with no visible picture at all. It turned out to be two separate issues that happened to occur at the same time:<\/p>\n\n\n\n If you see a solid pink image, check both. The CMA fix is in the bootargs. The lens issue is mechanical \u2014 just unscrew the dome cover and tighten the lens down until it’s flush.<\/p>\n\n\n\n OpenIPC’s built-in night mode appears to have a significant limitation on this camera: enabling But my workaround is to disable lightMonitor and handle automatic switching yourself with a cron script that uses sunrise\/sunset times for your location. Save the following to Update The script caches sunrise\/sunset times for 24 hours (using the free sunrise-sunset.org<\/a> API), only pulses the ICR motor when the state actually needs to change, and fails safely to night mode if the API is unreachable.<\/p>\n\n\n\n With this approach, set Here’s a working configuration for reference:<\/p>\n\n\n\n The Anpiz IPC-D3B53W-S is a solid candidate for OpenIPC. The hardware is capable, the sensor driver is already supported upstream, and once the IQ file, CMA, and GPIO pins are sorted it runs well. The main gotchas are the CMA allocation (easy fix), finding the correct ICR GPIO pins (GPIO 11 and 80, not obvious without digging into the original firmware), and making sure the lens is properly seated after reassembly.<\/p>\n","protected":false},"excerpt":{"rendered":" The Anpiz IPC-D3B53W-S is a cheap Amazon dome camera that turns out to be a surprisingly capable piece of hardware once you replace the stock firmware with OpenIPC. Under the hood it runs a SigmaStar SSC377 (infinity6c) SoC with a SC4336P image sensor, capable of 2560×1440 at 30fps. Here’s everything you need to get it … Continue reading “Flashing OpenIPC on the Anpiz IPC-D3B53W-S”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-95","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/posts\/95","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/comments?post=95"}],"version-history":[{"count":3,"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/posts\/95\/revisions"}],"predecessor-version":[{"id":98,"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/posts\/95\/revisions\/98"}],"wp:attachment":[{"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/media?parent=95"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/categories?post=95"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oerinet.net\/blog\/wp-json\/wp\/v2\/tags?post=95"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\nWhat You’ll Need<\/h2>\n\n\n\n
\n
\n\n\n\nStep 1 \u2014 Flash the Firmware<\/h2>\n\n\n\n
\n
flashrom -p ch341a_spi -w openipc-ssc377-lite-16mb.bin\n<\/code><\/pre>\n\n\n\n\n
\n\n\n\nStep 2 \u2014 Copy the IQ Tuning File<\/h2>\n\n\n\n
sc4336p_day.bin<\/code>) that contains the color correction matrix, white balance tables, and gamma curves tuned for this exact sensor. Without it, colors look washed out and flat.<\/p>\n\n\n\nbase64 sc4336p_day.bin\n<\/code><\/pre>\n\n\n\nbase64 -d > \/etc\/sensors\/sc4336p.bin << 'EOF'\n<paste base64 output here>\nEOF\n\n# Verify the file size (should be 111620 bytes)\nwc -c \/etc\/sensors\/sc4336p.bin\n<\/code><\/pre>\n\n\n\n\/etc\/majestic.yaml<\/code>:<\/p>\n\n\n\nisp:\n iqFile: \/etc\/sensors\/sc4336p.bin\n<\/code><\/pre>\n\n\n\n
\n\n\n\nStep 3 \u2014 Fix the CMA Memory Allocation<\/h2>\n\n\n\n
fw_setenv bootargs \"console=ttyS0,115200 panic=20 root=\/dev\/mtdblock3 init=\/init mtdparts=NOR_FLASH:256k(boot),64k(env),2048k(kernel),5120k(rootfs),-(rootfs_data) LX_MEM=0x4000000 mma_heap=mma_heap_name0,miu=0,sz=0x2000000 cma=8M\"\n<\/code><\/pre>\n\n\n\ncat \/proc\/meminfo | grep -i cma\n# CmaTotal: 8192 kB\n<\/code><\/pre>\n\n\n\n
\n\n\n\nStep 4 \u2014 Configure the GPIO Pins (IR Filter and Light)<\/h2>\n\n\n\n
ko.sh<\/code> \u2014 the kernel module startup script embedded in the squashfs of the original firmware \u2014 which explicitly exports and tests the ICR motor pins at boot.<\/p>\n\n\n\n<\/code><\/pre>\n\n\n\nFunction<\/th> Interface<\/th> Pin\/Channel<\/th><\/tr><\/thead> ICR filter \u2014 day coil<\/td> GPIO<\/td> 11<\/td><\/tr> ICR filter \u2014 night coil<\/td> GPIO<\/td> 80<\/td><\/tr> LED light<\/td> GPIO<\/td> 13<\/td><\/tr> IR LED (infrared light)<\/td> PWM<\/td> pwmchip0\/pwm4<\/td><\/tr> White light<\/td> PWM<\/td> pwmchip0\/pwm0<\/td><\/tr> Light sensor input<\/td> GPIO<\/td> 23 (input)<\/td><\/tr> Alarm input<\/td> GPIO<\/td> 44 (input)<\/td><\/tr> Alarm output<\/td> GPIO<\/td> 61 (output)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \/etc\/majestic.yaml<\/code>:<\/p>\n\n\n\nnightMode:\n irCutPin1: 11\n irCutPin2: 80\n irCutSingleInvert: false\n lightMonitor: false # doesn't seem to work\n lightSensorInvert: false\n backlightPin: 13\n<\/code><\/pre>\n\n\n\n# Switch to day mode\necho 1 > \/sys\/class\/gpio\/gpio80\/value\necho 0 > \/sys\/class\/gpio\/gpio11\/value\nusleep 250000\necho 0 > \/sys\/class\/gpio\/gpio11\/value\necho 0 > \/sys\/class\/gpio\/gpio80\/value\n\n# Switch to night mode\necho 1 > \/sys\/class\/gpio\/gpio11\/value\necho 0 > \/sys\/class\/gpio\/gpio80\/value\nusleep 250000\necho 0 > \/sys\/class\/gpio\/gpio11\/value\necho 0 > \/sys\/class\/gpio\/gpio80\/value\n<\/code><\/pre>\n\n\n\n
\n\n\n\nThe Pink Screen Mystery<\/h2>\n\n\n\n
\n
cma=8M<\/code> bootarg above)<\/li>\n\n\n\n
\n\n\n\nStep 5 \u2014 Automatic Day\/Night Switching<\/h2>\n\n\n\n
lightMonitor: true<\/code> (which uses image brightness to decide when to switch) disables all the night mode buttons in the web UI. And setting lightMonitor: false<\/code> to get the buttons back means automatic switching stops working for some reason. You can’t have both at the same time. I hope I am wrong – if so, correct me!<\/p>\n\n\n\n\/root\/nightwatch.sh<\/code>:<\/p>\n\n\n\n#!\/bin\/sh\n\nLAT=40.0000\nLON=-85.0000\nSTATE_FILE=\/tmp\/nightmode_state\nCACHE=\/tmp\/sun_times\n\nset_day() {\n if [ \"$(cat $STATE_FILE 2>\/dev\/null)\" != \"day\" ]; then\n echo \"Switching to DAY mode\"\n curl -s \"http:\/\/localhost\/night?enabled=0\" > \/dev\/null\n echo 11 > \/sys\/class\/gpio\/export 2>\/dev\/null\n echo 80 > \/sys\/class\/gpio\/export 2>\/dev\/null\n echo out > \/sys\/class\/gpio\/gpio11\/direction 2>\/dev\/null\n echo out > \/sys\/class\/gpio\/gpio80\/direction 2>\/dev\/null\n echo 1 > \/sys\/class\/gpio\/gpio80\/value\n echo 0 > \/sys\/class\/gpio\/gpio11\/value\n usleep 250000\n echo 0 > \/sys\/class\/gpio\/gpio11\/value\n echo 0 > \/sys\/class\/gpio\/gpio80\/value\n echo day > $STATE_FILE\n else\n echo \"Already in DAY mode\"\n fi\n}\n\nset_night() {\n if [ \"$(cat $STATE_FILE 2>\/dev\/null)\" != \"night\" ]; then\n echo \"Switching to NIGHT mode\"\n curl -s \"http:\/\/localhost\/night?enabled=1\" > \/dev\/null\n echo 11 > \/sys\/class\/gpio\/export 2>\/dev\/null\n echo 80 > \/sys\/class\/gpio\/export 2>\/dev\/null\n echo out > \/sys\/class\/gpio\/gpio11\/direction 2>\/dev\/null\n echo out > \/sys\/class\/gpio\/gpio80\/direction 2>\/dev\/null\n echo 1 > \/sys\/class\/gpio\/gpio11\/value\n echo 0 > \/sys\/class\/gpio\/gpio80\/value\n usleep 250000\n echo 0 > \/sys\/class\/gpio\/gpio11\/value\n echo 0 > \/sys\/class\/gpio\/gpio80\/value\n echo night > $STATE_FILE\n else\n echo \"Already in NIGHT mode\"\n fi\n}\n\niso_to_ts() {\n DT=$(echo $1 | sed 's\/T\/ \/' | sed 's\/+[0-9:]*$\/\/' | sed 's\/-[0-9][0-9]:[0-9][0-9]$\/\/')\n date -u -d \"$DT\" +%s\n}\n\nis_valid_ts() {\n [ -n \"$1\" ] && echo \"$1\" | grep -q '^[0-9]*$'\n}\n\nCACHE_AGE=0\nif [ -f $CACHE ]; then\n CACHE_AGE=$(( $(date +%s) - $(date -r $CACHE +%s 2>\/dev\/null || echo 0) ))\nfi\n\nFORCE_FETCH=0\nif [ ! -f $CACHE ] || [ $CACHE_AGE -gt 86400 ]; then\n FORCE_FETCH=1\nelse\n read SUNRISE_TS SUNSET_TS < $CACHE\n if ! is_valid_ts \"$SUNRISE_TS\" || ! is_valid_ts \"$SUNSET_TS\"; then\n echo \"Bad cache detected, clearing\"\n rm -f $CACHE\n FORCE_FETCH=1\n else\n echo \"Cached: sunrise=$SUNRISE_TS sunset=$SUNSET_TS\"\n fi\nfi\n\nif [ \"$FORCE_FETCH\" = \"1\" ]; then\n echo \"Fetching sun times from API\"\n RESPONSE=$(curl -s \"https:\/\/api.sunrise-sunset.org\/json?lat=$LAT&lng=$LON&formatted=0\")\n SUNRISE=$(echo $RESPONSE | grep -o '\"sunrise\":\"[^\"]*\"' | cut -d'\"' -f4)\n SUNSET=$(echo $RESPONSE | grep -o '\"sunset\":\"[^\"]*\"' | cut -d'\"' -f4)\n SUNRISE_TS=$(iso_to_ts \"$SUNRISE\")\n SUNSET_TS=$(iso_to_ts \"$SUNSET\")\n if is_valid_ts \"$SUNRISE_TS\" && is_valid_ts \"$SUNSET_TS\"; then\n echo \"$SUNRISE_TS $SUNSET_TS\" > $CACHE\n echo \"Fetched: sunrise=$SUNRISE_TS sunset=$SUNSET_TS\"\n else\n echo \"Failed to fetch valid sun times, defaulting to night\"\n set_night\n exit 1\n fi\nfi\n\nNOW=$(date +%s)\necho \"Now=$NOW sunrise=$SUNRISE_TS sunset=$SUNSET_TS\"\n\nif [ \"$NOW\" -ge \"$SUNRISE_TS\" ] && [ \"$NOW\" -lt \"$SUNSET_TS\" ]; then\n set_day\nelse\n set_night\nfi\n<\/code><\/pre>\n\n\n\nLAT<\/code> and LON<\/code> for your location. Make it executable and add it to cron:<\/p>\n\n\n\nchmod +x \/root\/nightwatch.sh\necho \"*\/5 * * * * \/root\/nightwatch.sh >> \/tmp\/nightwatch.log 2>&1\" >> \/etc\/crontabs\/root\nkillall crond 2>\/dev\/null\ncrond\n<\/code><\/pre>\n\n\n\nlightMonitor: false<\/code> in majestic.yaml so the web UI buttons remain functional for manual overrides.<\/p>\n\n\n\n
\n\n\n\nFinal majestic.yaml<\/h2>\n\n\n\n
system:\n webPort: 80\nisp:\n iqFile: \/etc\/sensors\/sc4336p.bin\n antiFlicker: disabled\nimage:\n mirror: false\n flip: false\n rotate: 0\n contrast: 50\n hue: 50\n saturation: 50\n luminance: 50\nvideo0:\n enabled: true\n codec: h264\n size: 1920x1080\n fps: 20\n bitrate: 4096\n rcMode: vbr\n gopSize: 1\nvideo1:\n enabled: false\nnightMode:\n colorToGray: true\n irCutPin1: 11\n irCutPin2: 80\n irCutSingleInvert: false\n lightMonitor: false\n lightSensorInvert: false\n backlightPin: 0\nrtsp:\n enabled: true\n port: 554\nwatchdog:\n enabled: true\n timeout: 300\n<\/code><\/pre>\n\n\n\n
\n\n\n\nSummary<\/h2>\n\n\n\n