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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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26 views

Using an MCU plus an SoC like the TX2 to synchronize multiple CMOS Cameras

I have been looking at various options to obtain synchronized images from three or more cameras. The options available for the TX2 are just simply out of my price range. I accept that of course I ...
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63 views

Filtering out everything below 12v on a car reverse light circuit

First of all I've like to mention that I'm by no means an electrical engineer. I'll try to explain what I mean with the title. I have installed a headunit which has an option for a reverse camera. ...
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2answers
79 views

Infrared LEDs with minimal RED glow

I'm trying to find a 940nm SMD infrared led with minimal red glow at night. The TSAL6400 gets close to it, but it's still not completely invisible and not SMD. I've noticed IR leds have different ...
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19 views

USB 3.0 VS MIPI CSI-2 camera interface on Embedded Linux system. Which one is better from both hardware and software perspective?

I have a Sony FCB series camera (1920x1080) and looking for a better interface protocol to connect it with processors like NXP, TI or any similar embedded processor. The camera has a LVDS out port ...
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1answer
54 views

Bosch security camera pinout

I have a Bosch NDC-274-PT security camera that had the wiring cut off at the base. It's a POE security camera (though it also supports regular 12 or 24V power), so I was hoping to find typical ...
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28 views

How to run raspberry pi compatible mipi csi camera on rock pi 4 b

I am trying to run a mipi csi camera on a rock pi 4 but I can't figure out how to get it working. I have the rock pi 4b running on Debian (Linux) and the camera is plugged in and the power led is lit. ...
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54 views

Identification of camera component including probable metal composition

I realize this is probably off topic but am curious as to what electronic component might be shown in the following picture, and what metal it likely is made off. It is presumably part of the ...
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1answer
43 views

Shortenest focus distance of ov2640 camera modules with fixed focus

Is it possible to decrease focus distance to 3-4 centimeters on fixed-focus ov2640 camera modules which sell with chineese ESP-32 CAM or M5Stack ESP32 CAM? Actually they setted up to infinity focus ...
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1answer
58 views

How to make arduino with OV2640 2MP Camera Module

How does the OV2640 Camera Module communicate with arduino and through what pins? My goal is to add one to an arduino esp 32.
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1answer
92 views

Can I add more RAM to the stm32f103c8t6? [closed]

I am currently working on my project using the "super blue pill" which uses the stm32f103c8t6. This board has about 20kb of RAM so there is not too much to work with here. So far I have managed to ...
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1answer
107 views

Extending PCB switches and LEDs

I have a project where for the prototype, I'm using some off-the-shelf components, namely drone cameras and DVR boards installed in a car. The DVR board has a status LED and a momentary switch which ...
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47 views

Can I use Highspeed Opamp as differential clock driver?

I want to use high speed Opamp LT1364 as +/- 15V clock driver of same voltage instead of typical CMOS / CCD clock drivers with lower voltage and slew rate. CMRR : 90dB PSRR : 100dB Slew rate : 1kV/uS ...
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47 views

Interfacing DCMI with SDIO and FMC on STM32F446VE

I am attempting to implement a system which involves capturing 1080p images via a camera connected over 8 bit parallel DCMI and saving them to an SD card via SDIO. If I understand correctly I cannot ...
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77 views

Interfacing OV7670 camera with STM32F4 (no FIFO)

I have to interface my STM32F401RE with an OV7670 camera module without external AL422. I followed some of the many tutorials for Arduino, and I was able to capture images using Arduino UNO. ...
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51 views

Unable to find data sheet for MAX8918ITM

I am quite new to electronics, so I apologise for the inevitable mass of stupidity in this question. I am trying to find the data sheet for the LCD driver MAX8918ITM, from a Nikon COOLPIX L110, and it ...
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2answers
133 views

Is only a firmware limitation the fact that some camera can't store photo in RAW format? [closed]

I was interested in understanding if from the point of electrical engineering storing the RAW data of the sensor directly into the memory of the camera require special hardware. Could be more ...
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80 views

Camera pixel size limit reached?

Just read here that Samsung has produced a camera sensor with a pixel size of 0.8 micron ie 800nm. Is it possible, or useful, for the pixel size to go below the wavelength of the light being imaged? ...
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3answers
105 views

IP Camera and USB data transmission over Ethernet Cable

Currently I am working on a project that requires connection of the Arduino and IP Camera over single Ethernet cable to a laptop and additionally supply power to a robot. The goal is to stream Video ...
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1answer
254 views

Wiring a 7 pin laptop webcam? [closed]

I'm trying to connect an old laptop webcam I bought for $0.93 on eBay to an Arduino Uno microcontroller. Since I currently don't know what all the pins on the webcam are used for, I'm trying to ...
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26 views

Can the scanning speed of an electronic rolling shutter CMOS sensor be controlled?

I'm not certain I'm asking this correctly as I don't entirely understand how such a camera sensor works, so help me out with a couple of areas please! I want to program something that makes use of ...
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1answer
82 views

VHS(C) tape speed issues - how does the speed change for different modes?

I have a VHS-C camcorder that has a lot of trouble keeping constant speed for the main tape motor (even with the battery fully charged). Most of the time it's way too fast (similar to fast forwarding),...
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1answer
35 views

Camera LED in phones - PWM or analog current controlled?

The LED illuminator/flash that is used on cellphones with cameras is also controlled by flashlight apps. Is the light level controlled by pulse width modulation or is it analog current controlled? In ...
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1answer
66 views

Can I connect an Android smartphone to an Arduino Uno? [closed]

I'd like to connect my main Android smartphone (it's a ZTE Blade X) to my Arduino Uno. My main reason is I'd like to use the camera on my phone as a sensor for the Arduino, for various projects. Is ...
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1answer
36 views

Switching 3.3V with a Raspberry Pi gpio pin

I recently bought an IR Camera for my Raspberry Pi, something like this: https://www.amazon.com/kuman-Raspberry-Camera-Module-Supports/dp/B01ICLLOZ8/ref=mp_s_a_1_17?crid=M3FSU2COLT5W&keywords=ir+...
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70 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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33 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
80 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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67 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
95 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
37 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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1answer
676 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
34 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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1answer
239 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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2answers
135 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
68 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
57 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
301 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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80 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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54 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
139 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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169 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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496 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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647 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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1answer
112 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
161 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
91 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
96 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
147 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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59 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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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 ...