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Questions tagged [camera]

A camera is an optical or opto-electronic device that records a 2D image of a 3D scene. Cameras can be still cameras (photography) or video cameras for moving images.

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Ethernet Poe 30m long to IP camera [on hold]

I want to connect over POE over 30 meter to IP camera. 12 max 1A and I use passive injector ~ 2$ from eBay. What can I do to work because it only works with 8-10 meter Ethernet cat5e
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44 views

Failed ribbon cable in canon camera [closed]

Does anyone recognize the likely cause of the damage on this ribbon cable? The repair center claims water damage but it seems remarkably localized for that.
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1answer
64 views

How does a camera pixel accumulate charge (colour)?

I refer to the Wikipedia entry for a CMOS camera sensor's individual pixel. There is a schematic like so:- and a statement that:- The read-out transistor, Msf, acts as a buffer (specifically, a ...
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29 views

Choosing a camera for near-infra-red illumination analysis

Which parameters are important to look for in camera specs./data-sheets if it will be used for irradiance pattern analysis from near infra-red sources. Typical spectra range of interest is from ~700nm ...
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1answer
75 views

How to emit infrared radiation online without configuring the monitor/hardware?

I wish to make a video streaming application where infrared radiations are emitted out of the display so that if someone tries to record the video through a camera, all they see is a white light and ...
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45 views

Drone camera chip identification help

I tried searching for this chip and looking for a similar manufacturer logo but with no succes. I'm trying to get a datasheet on it. It is from a drone that records 720p 30fps video.
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1answer
88 views

Where can I get a display screen with 30 Hz or less refresh rate? [closed]

I am experimenting with a camera recording a display screen. Based on what I have read - camera recording a screen will have flicker if the refresh rate and frame rates are not synced. My mobile ...
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1answer
33 views

Does Camera Power Consumption Lower Without Output?

I have a camera with power consumption listed at 24 VDC +10% @ 1.5 A max. That same camera has a built-in output for an external light, 24VDC @ 750 mA max. Without the external light output, will my ...
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2answers
96 views

How to connect my Sony camera to an UNO ATMega238p Arduino? [closed]

I saw a cool project online where they had a little camera connected to an Arduino with a motion sensor, the camera takes pictures whenever the sensor gets activated. So, I'm trying to build the same ...
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1answer
483 views

Electric shock from outdoor security cameras

I just bought this outdoor security camera kit from Amazon. (Amazon product link) When wiring it up, I noticed that I got a small sharp shock when touching the small screws on the metal casing ...
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1answer
53 views

Video stream through microcontroller wifi

i am currently following an education in technical informatics(mostly micro controllers programming). I always wondered how to send video frames though an cheap micro controller, but after googling a ...
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1answer
32 views

Can high audio input level cause video loss or video distortion in camcorder?

Today I met with a vendor regarding the installation of a PA system at our facility. We currently record meetings with a handheld camcorder mounted on a tripod, and we're looking to add microphones in ...
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134 views

Arduino MKR Vidor 4000 [closed]

Can it capture the image in full Rpi camera resolution and save it somewhere? Thank you for your time.
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73 views

What is the response curve of a CMOS sensor cell to the amount of light?

Using my Nikon D5100, shooting RAW pictures and using Darktable to disable absolutely all contrast curves, white balancing, sharpening and even the debayering, I've measured the average value of the ...
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2answers
64 views

Powering a wireless camera

I'm trying to design a camera system for use in my bike shed. The bikeshed is in range of wifi but has no power. First I thought I could use a Raspberry Pi with a Picam, and have video streamed to an ...
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1answer
49 views

What to do with internally unused pins on a non-programmable device?

I'm designing a board for using the FLIR Lepton 2.0 LWIF camera (datasheet at https://www.flir.com/globalassets/imported-assets/document/lepton-engineering-datasheet---without-radiometry.pdf), and ...
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1answer
109 views

Can we use ethernet cable instead of coaxial cable without adaptors.?

I am a mechanical engineer. Trying to build a computer vision system using endoscopic camera. I have a camera with 4 pin input, 2 input pins for power supply of 5 volt and 2 input pins for video ...
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71 views

(Arduino) When turning TIP120 on again, sometimes the slave flashes trigger without being told to. Why?

I have two mini slave flashes, that have no stand-by modes by themselves. So, even when charged and ready to flash, current keep flowing from the two AAA batteries each, and, if I forget to turn them ...
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48 views

novice user needs assistance for three peltiers being connected to a single power source

I am a novice user, and I am not very familier with Peltier setups, for my old CCD astonomy camera. The Peltier that was broken in the camera is not supplied by the manufacturer anymore, nor will they ...
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2answers
130 views

What do smartphone manufacturers do differently with their cameras than the Raspberry Pi module camera

There is a huge difference in quality between the image/video taken by the latest iPhone or Samsung smartphone compared to that taken by the Raspberry Pi camera module. What is different about the ...
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2answers
68 views

Overclocking an image sensor for higher FPS

What happens if I overclock an image sensor? For instance the OV7670 (datasheet) which has a rated maximum system clock input (XCLK) of 24 MHz and maximum pixel clock (PCLK) of again 24 MHz. The ...
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2answers
320 views

How to do IMU and camera “sensor fusion” tracking?

I have some 50ms latency cameras on hand and an gyro+accelerometer+magnetometer 800Hz IMU. I would like to know how exactly I should do a sensor fusion of such an IMU and camera to fix the positional ...
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344 views

Dual MIPI cameras on Firefly RK3399

I am trying to set up dual MIPI cameras with a Firefly RK3399 development board running Android as 'demonstrated' here. The RK3399 has dual MIPI-CSI camera ports which can be used with an OV13850 ...
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69 views

Protection of DIY car camera circuit

DESCRIPTION I have no background in electronics. As my primary reference I'm using "Practical Electronics for Inventors" (PEFI) 4th Ed., by Scherz and Monk (2016). I plan to get my basic electronic ...
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1answer
66 views

Parallel PoE injector from pc psu?

So I was wondering if I could power my 8 or at least 4 ip cameras from my old pc psu. I have: *500 W psu, where 12 V can use up to 360 W *GV-EBL1100 ip cameras which require 12 VDC / (IEEE 802.3af), ...
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3answers
101 views

Synchronizing two OV7670 image sensors

I would like to create a simple frame synchronihed stereo camera. I found there are cheap OV7670 boards (without FIFO memory) that work with Arduino (or compatible) boards - these sensors do not have ...
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1answer
84 views

Why is the Image Sensor Board routing different?

The below posted is a open source camera project Elphel PCB layout images I have took their 353 model camera, which is mounted with an Onsemi sensor I only know that for high speed signals we go ...
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1answer
76 views

IVPort raspberry pi camera module

Im trying to design multiplex camera system for my raspberry pi something like this https://www.tindie.com/products/canerdurmusoglu/ivport-dual-v2-raspberry-pi-camera-multiplexer/#product-description ...
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1answer
101 views

Bypassing DSLR battery to power camera from power supply cheaply with bidirectional optocouplers

I am trying to power my Nikon DSLR with a permanent power source instead of the battery for long captures (overnight) without buying the overpriced battery adapter. I can't simply connect a AC-DC ...
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53 views

I'm having trouble with a Zif cable on a Nikon coolpix S3700 because it appears to have no locking flap

I'm trying to repair an S3700 the buttons (record ect.) stopped working and when I took it apart to clear the dust out I accidentally removed a zif cable and now I can't reconnect it. The actual ...
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0answers
57 views

Dashboard Camera - How to Fit a Supercapacitor

I do not have a background in electronics. I am using a cheap Chinese sport camera as a dashboard camera – which seems to be a bad idea for the battery started to wear very fast. The battery swollen ...
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2answers
3k views

Why is there no rolling shutter when using a mechanical shutter?

So I know it might not be the best place to ask this question, but maybe some of you are familiar with the mechanics of digital mirrorless cameras and the technology of CMOS sensors. I don't quite ...
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295 views

Interfacing with MIPI CSI-2 camera sensors like the Omnivision OV2732?

CSI-2 is used in pretty much every smartphone however I'm struggling to find much information on how most companies receive and control CSI-2 sensors. I understand there are NDAs. This is not for a ...
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1answer
119 views

What is comparison of readout times of global and rolling shutter cameras? [closed]

Rolling shutter will take more time because of sequential readout and global will take less time.But what are the exact values of image readout time?
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1answer
58 views

Probing and Analyzing MIPI CSI 2 Interface

I'm looking at probing and analyzing the MIPI CSI 2 interface on D-Phy with a Keysight 16802A 68-channel logical analyzer plus the N4851A/B probe. The question is, usually a 16802A can have ...
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49 views

How is the lens assembly done for an image sensor?

Digital camera has two main parts: Image sensor Lens assembly I want to know about the process of integration of an image sensor with the assembly?
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28 views

Firing 8 Disposable Cameras Shutters via Solenoids

I've found an 8-channel SRD-05VDC-SL-C relay. The solenoids I am looking at are: Solenoid repelling 0.18 N/mm 2 N/mm 12 Vdc 1.1 W https://www.conrad.com/ce/en/product/502285/Solenoid-repelling-018-...
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1answer
85 views

ov5642 i2c not detected

We brought the following sensor from Boundary devices. https://boundarydevices.com/product/nit6x_5mp/ The idea is to add Camera for our i.MX6 Customized board I connected the following to check ...
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1answer
281 views

Phone camera connector types

I have two phone cameras, rear and front, but I don't know which type of connectors are these?
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172 views

Convert parallel LVDS to csi-2

I have a camera outputing parallel data and I want to interface it with iMX6 module which accepts CSI-2 camera data. Are there any ready & cheap solutions to convert parallel into CSI-2. Lattice ...
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2answers
42 views

How can I determine the battery life for a continuously recording camera module?

I'm not an electrical engineer, so please forgive my lack of technical terminology. I'm researching an idea that requires me to create a PCB that will have a camera module record video and store it to ...
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61 views

Does random access to image sensors require extra hardware?

Jun Ohta's "Smart CMOS image sensor and applications" says that random access to pixel arrays is possible. Using Row parallel readouts and column decoders, one can select which pixels to readout and ...
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2answers
1k views

Eliminating or reducing the red glow from IR LEDs at night

tl;dr; my question is simply this: is there a way to hide a bunch of IR LEDs (for a night-camera) so they don't get such a red glow at night? Preferably not at the expense of the light output, but ...
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1answer
73 views

Difference in cut-off point when powering camera from 24v output vs 14.4v output [closed]

I work in the film industry and my question relates to powering our cameras. Our cameras are generally powered by block batteries that provide either 24v or 14v power - an example here (VCLX). Some ...
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2answers
89 views

High Speed Light Detection in Daylight

I'm trying to create a system to detect when a set of lights trigger in drag racing to the thousandth of a second. However, all my attempts at finding cameras for a raspberry pi or arduino aren't ...
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3answers
72 views

Can power be distributed to USB devices from central supply?

I own some inexpensive yi home cameras. I don't like having a cable run to a wall wart for each camera. Is it possible to run low voltage wires in the walls to a central 5v power supply with ...
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1answer
87 views

How to connect a spare mobile phone camera to a display and power? [closed]

I have an Apple iPhone front and rear cameras along with its A4 motherboard (yep, I disassembled it) is it possible that I can get a live feed from these camera(s) to a display and connected to a ...
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1answer
51 views

Connecting a supply voltage from linear encoder to camera IO board with a current limiter

I have a TTL output from an incremental linear encoder which also supplies a 5V output at 140 mA. I would like to use this 5V output voltage to power a camera IO board with RS422 Interface which has a ...
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1answer
50 views

Why there is difference between image size and video resolution of a specific camera? [closed]

I was searching to buy a camera, but I saw in specs they wrote: 2MP(full hd) video recording 5MP image size Why the vido size is 2MP but image size is 5MP? How ...
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1answer
44 views

How can I record video with single camera module of smartphones? [closed]

I want to record video apart from my smartphone(Let's say Samsung Galaxy S3) taking out it's camera module.I think it is possible because camera's microchip comes with itself.I mean I will connect ...