reviews imx335, 412

IP cam SoC

hackaday raspebbery streaming use Hi3518E IP Camera SoC as alternative to Raspberry pi hack an old CCTV outdoor camera, replace the internal board with a rooted Hi3518E, add ESP32 with an IR sensor to wake up the cam and upload a few seconds of video to a cloud service? Low duty cycle, so it’s powered by solar and battery. Uses [ OV9712 from omnivision. PC (720P) Motorized Zoom & Auto Focal LEN 1/3" Aptina CMOS sensor AR0130 +Hi3518C CCTV IP camera module PCB board +LAN cable supports external wifi dongle (chip RT3070).


econsystems 13Mpix camera for Nvidia Jetson Caspa FS camera board has a CMOS imager (Aptina MT9V032, 752 x 480, 60 FPS, color) making it ideal for robotics computer vision. Without an optical filter, the Caspa FS receives the full-spectrum including infra-red range. There are a few big reasons for selecting the MT9V032 – but the biggest, by far, is its global shutter (“TrueSNAP” in Aptina’s marketing parlance). The vast majority of CMOS image sensors use a simpler rolling shutter, which leads to all sorts of troublesome visual artifacts. The MT9V032, on the other hand, is able to expose all of its pixels for the exact same slice of time, making it immune to many of those artifacts. That doesn’t, of course, do any good for more conventional artifacts – like motion blur; only shorter exposures can help with that. ...Beyond raw sensitivity, the MT9V032 supports a form of high-dynamic-range exposures. By progressively reducing the sensitivity of its pixels over the course of an exposure, the sensor is able to approximate a non-linear response. This significantly increases the dynamic range that the sensor can capture in a single exposure – making it much easier to operate in environments with wildly varying lighting conditions (e.g. outside on a sunny day). For a mobile robot operating in an unstructured outdoor environment, each of those features is pretty compelling (perhaps even mandatory). Finding them all in one device is even better. Those features come at a (monetary) cost, however – in small quantities, it’s easily twice the price of less-functional VGA sensors.

Ip cameras


Attach a 1/2inch CCD Watec analogue camera(Google Ebay and Watec) to PAL/NTSC to USB converter( The USB in turn connects via an USB-Ethernet adapter to a small embedded Wi-Fi AP to stream real-time video from a UAV etc. Or use DVR

WebRTC from google implements real-time video commmunication. usb version framegrabber that converts an analogue or s-video signal to an Mpeg4Compression stream that is transmitted from the Uav robotics drone with a generic MeshNetworking access point modem, preferably 2.4ghz 802.11b and not d or g, because b has the furthest range.

Attach an analogue Watch 0.003lux camera to a mpeg4 module which interfaces with an embedded Wi-Fi radio. Most retail analogue-mpeg4 converters are Windows based.

  • OpenTLD open source object recognition and tracking. Can automatically detect intruder and track him, engaging him with Net gun and PepperBall gun. Automatically detects a vehicle and can determine if vehicle stopped and then alert if hijackers disengaged, while ignoring the kids playing in the street. This will improve a CCTV surveillance system. Humans can't concentrate for more than 10mins.

Spectral response limits


0.003Lux from and is the limit in lux sensitivity for surveillance purposes. The values higher than this are used in astronomy (0.0001lux) and can't be used with moving objects since it smears the picture. and are the preferred suppliers of high sensitive lux cameras. Adverts for CCTV cameras are deceptive, they will state that for night time vision in the presence of InfraRedLeds the CCD camera has a sensitivity of 0lux. There is no such thing as 0.0000000000000......0000lux. Security outlets selling cameras exploit the public's ignorance by stating their cameras operate at 0 lux. 0 lux implies 0.000000000000000000000000001 lux , there is no such camera. We have the following without IR illumination:

  • 0.5 lux on 1/4 inch sensors
  • 0.1 lux on 1/4 inch sensors which is also limit for color images
  • 0.01 lux on 1/3inch sensors B/W
  • 0.003 lux CCD limit before image smearing takes place on 1/2 inch CCD sensors with movement. B/W
  • 0.0001 lux used in AstronomyCameras because the night sky is static.

The larger the CCD sensor the higher the sensitivity and cost of the camera. Only BW are available at 0.003lux. UavInTheNews uses 0.003 lux camera for aerial monitoring. A CCTV brochure must state the lux sensitivity (0 lux is not true) and image sensor size. The more sensitive ranges of lux requires less InfraRedLeds to illuminate a dark area.

webcam to scope connect webcam to watch over web

Sony Sony block camera used for UAV drone

Ebay shippers

  • Will ship combined orders, most ebay merchants refuse

Watec retailers

Build own analogue camera

Reverse engineer Sanyo and others via BoMarc and build own CCTV camera and sell via FrontingCompany. design with Sony CCD sensors.

FSO and cameras

Digitize the video signal as the camera source and transmit the signal back via FreeSpaceOptics instead of using a VideoBalun . Nearly unlimited repeater nodes are created with FSO. Use FSO to repeat a camera signal back to the base.

CCTV stops crime in Natal

Lenses used in CCTV

* OpticalManufacturers

Build pan, tilt, Zoom system with RS485

["RS485"]. RS485 under ElecTronics to control stepper motor manipulating camera on roof. Use InfraRedLeds to provide nightvision at over 300m in pitch black darkness between 880 and 940nm.

Spectral response and CCD sizes

The larger the CCD sensor the better the spectral response or the better image resolution is achieved. 1/2 CCD coupled with an Infra-red laser can detect motion at 800m. 1/3 provides a good trade-off between cost and performance. 1/4inch, 1/3 and 1/2inch are sizes used for night vision. The lux value must be at least 0.01lux for long distance vision.

Astronomy cameras for CCTV

* South African distributor of Scientific Alert  011 476 5718
* 0.003lux camera 
* 0.08lux camera 
* See AstronomyCameras 




Pulnix has UltraViolet sensitive cameras.


Nightvision for CCD are achieved in the 820-880nm(semi-covert) and 940nm(completely covert) pectrum. A cluster of high power InfraRedLeds(820nm) will glow like red dragon eyes. For street surveillance 940nm must be used which is completely invisable to the human eye. The diodes are more expensive and the spectral response of the CCD must sensitive in the 940nm region. To prevent headlights from blinding the camera a IR filter lens is attached. Discriminating between a human walking down the street and a car driving past is possible. See wiki for details on this. Eyes of animals work as the same way like CCTV Cameraswhile in the dark. sells a camera with an A/D converter on every pixel of the CCD sensor. The camera is usually used to attenuate sharp light overloading the CCD sensor. will be able to provide more info on the Baxall range. Ethernet camera's CCD sensor are not suitable for nightvision applications. A high end mini-itx connected to a KMC-4400r or Pico capture card should be used and the mini-itx Ethernet port connected to the network. are used by ZoneMinder to stream Jpeg images over the network. In this way an Axis ethernet camera functionality is simulated. For a high current(2A, 12v) long range IR camera like the E-558(eaglecctv) use a standard PC power supply. Bridge the Green and Black contacts on the ATX connector to power it up.

CCD sensors

1/4 , 1/3, 1/2 inch Ccd's

In the days of vcr's we all used to use wither vhs (240 tvl colour) or svhs (supossidly >400tvl) and cameras were either med res (380 tvl b/w/330 colour) or high res (570 tvl b/w 480 tvl colour). Now as you could only resolve 240 on vhs why use high res cameras? Well you do end up with a slightly sharper image from high res kit even though your only recording the same actual number of pixels, i assume its to do withthe way the camera makes 380 tvl source into a 625 tvl transmission but i dont know. I would say always go for high res where possible (on the cam front)

Note on format sizes 1/4 1/3 and 1/2 inch ccd's all have (or can have) the same number of pixels. As most cctv is made from camcorder chips we tend to follow that industry, thats why the really specilist cctv are so much money (1/2 frame transfers etc). Even though a 1/4" can produce the same number of pixels a 1/2" chip can it needs a lot more light or gain to be able to do this. This is why cheapo cams have leds on them as they use 1/4 pickups and through their own light rather than 1/2 which can use clear starlight. Id go with a 1/3 as its a good balance between cost and low light performance. But if you have the light it matters little. Plus the smaller factors need cheaper lenses so you can save there.

Protecting the CCTV camera against sabotage

PIR detectors are protected from having the heat sensing unit spray painted with black paint by using a short range Ultra-Sonic detector to detect any attempt as masking the PIR. See ElecTronics. It is known in the trade as PIR anti-masking. Clamp such an Ultra-Sonic detector against the camera to determine if a thief spray paints the camera. This is especially useful if the camera is not in motion detection mode.

Via Mini-itx and megapixel-camera


* Pictures of thermal regulated camera box.

Commercial DVR

* $200
* $4 VGA converter

Build own Ethernet cameras

Build a circuit based on CircuitCellar June 2007 issue of video analogue to digital conversion using ARM processor and H-V line syncroniser seperator. Using an ASIC ciruit the digital data interfaces with an embedded ethernet controler which in turn interfaces with a switch. The switch connects to the VDSL2+ DsLam modem for video surveillance network.






Nightvision goggles for R1000


Video surveillance specialists


Elphel Model 333 A Linux-based network camera that uses the Ogg Theora decoder, implemented on an FPGA in open source code. Ogg Theora is said to allow, for the first time, both a low bitrate and high-resolution, high-framerate video. details.

MPEG4 linux boards from the aviosys website


Video streaming

Other notes

* CctvRetailers
* CctvLinks

CCTV stops crime

External links

* Tracks person through city
* Wearable cameras from
* ThermalImagingCameras
* SerialCameras
* AstronomyCameras
*  Quad processors with motion detection
* Ether camera
*  Sound and Video journal   See Rs485Post104
* FPGA network cameras
* Featuring Extreme’s US Patented UF500 IR illuminators,
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