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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How to design “DC iris control” circuitry for CCTV camera applications?

Problem Statement: How to design "DC iris control" circuitry for CCTV camera applications? I have a proprietary and old 'Tamron' lens with me, I wish to control its IRIS. The iris control ...
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70 views

Camera external trigger; What is the shutter signal?

There is a Sony RX10 III camera which also has a external trigger for it. The goal is to send a signal from a micro-controller (Arduino & optocoupler in between) to release the shutter. I thought ...
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57 views

How to use a transistor to externally trigger a Canon EOS camera?

I need to trigger a Cannon EOS 650D camera externally, this is done by shorting 2 wires, leading out from a standard 2.5mm jack: The camera provides 3.3V. I want to complete the circuit and ...
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56 views

Floating node in 4T CMOS camera pixel

I know how a 3 Transistor CMOS camera pixel works. As I understand, 4T CMOS pixels have one additional transistor that connects the photodiode to a so-called floating node. What is that floating node ...
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Is it possible to connect CSI-2 camera to CSI-1 port? [closed]

I'm not hardware engineer and I have no idea if it would possible connect CSI-2 4k camera to CSI-1 port in snapdragon board? Do I need any adapter or it will work straightaway? Is any other pitfalls I ...
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Why does Camera Serial Interface (CSI-2) have multiple data lanes?

I have been reading through the CSI-2 spec and some controller documentation and I see that it has up to 4 data lanes. If data is transferred on 4 lines at a time then how is it a serial interface ...
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68 views

Black bar and red / green swap in OV7670 image

I´m working on my OV7670 interface and I have some issues with the color / image settings. I use the color bar settings of the sensor to check my logic and the color bar looks good: But I´m unsure if ...
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DSLR Hotshoe wiring to Arduino revisited one more time - When powering off the circuit, the flash always fires!

After correcting the false triggering I was getting in my last question: DSLR Hotshoe revisited It was related to debouncing the pulse sent from the camera to the flash, I noticed one more problem. I ...
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51 views

DSLR Hotshoe wiring to Arduino revisited - I'm getting false triggering. How can I overcome that?

I read this post of 7 years ago:DLSR Hotshoe wiring to Arduino I built the exact circuit described in the answer, shown below, to detect when my canon DLSR hotshoe would send a "trigger" ...
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128 views

What kind of electronic component is this?

I am trying to repair the flash of a P900 camera, since it gives a burning smell after being used. After disassembling the flash unit, I came across this part for which I need some professional eyes ...
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102 views

How can I sync an LED with a camera shutter? [closed]

For an academic research project I need to visualise a fast movement. To do so, I need to sync a small (< 6 cm on the longest side) LED light source with the shutter of a high-FPS camera. The FPS ...
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1answer
51 views

Camera sensor to accept or reject the position in which a component is kept on a machine

The factory where I work has a hole punching and labeling machine, that basically needs to punch holes and stick labels onto a plastic container. The most important aspect is that the container needs ...
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Can we program our smartphone camera to detect the frequency and time period of IR light?

My use case is this: I am emitting morse code using a sole IR light source, and I intend to detect the frequency and the time period of the light source using my smartphone camera. Can this be done?
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Cannot find datasheet for CMOS sensor

can anyone please help me identify a datasheet for that CCD/CMOS sensor ? on the camera it says CCD but i highly doubt it since it's 4 dollars. it's a reverse camera and i want to remove the overlay, ...
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reversal of computer camera image [closed]

Why do so many embedded cameras in computers, etc., prsent a mirror image? It means anything with writing on it is backwards. Why is this desirable?
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Where is the flash memory for this IP camera board?

I just opened an Escam IP camera and this is the main board. You can see the HI3516 SoC + H5TQ1G63EFR RAM + that thing with adhesive that in the second photo I took off and you can see it's a ...
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Trying to build custom electronics connection to a motorized zoom/focus lens

I'm a beginner when it comes to electronics, I had some success with pretty simple arduino based projects like blue tooth controlled stepper motor assemblies using well documented drivers and ...
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57 views

Can I use PWM signal to control devices that requires a system clock - OV7670

I want to use the simple camera ov7670 and that camera requires a system clock, called XCLK. The clock requries 24 MHz input from a source that are at 50% duty call and a period of 24 nanoseconds. ...
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How can I use a square wave to interleave 2 LEDs with an arduino?

I have a PCB that drives a camera. I want to flash 2 LEDs in time with the camera's framerate using an Arduino. After some examination I found a CLK pin on the PCB that I think might correspond to the ...
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41 views

How to interface a camera with a 4-pin aviation connector?

I'd like to use this kind camera on a development board. I want to make an invention and I need to use this specific camera, but none of the development boards that exist (from Arduino to the more ...
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1answer
49 views

Can I wire a security camera into a switched lighting circuit?

I live in a building with a communal stairway. This has lights which are switched on each floor, controlled by a timer box which holds the lights on for 2 minutes after the push button is pressed. I ...
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79 views

ESP32-cam or another camera for shooting at short distances

I am trying to automate my mechanical water meters. It looks like this: They are in a place that is difficult to get to, so I thought to place cameras, but distance between the meters and the wall is ...
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77 views

Simplest circuit for several hundred volts from 5v

I am trying to make a simple camera flash circuit for a project, but I am really having a hard time. I can't seem to find a simple circuit anywhere. It doesn't need to maintain the high voltage under ...
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1answer
264 views

“The D-PHY specification defines the maximum lane flight time to 2 ns.” Why?

I'm hoping someone can explain to me why the maximum lane flight time matters. Impedance matching, skew, attenuation, etc. all make sense to me as a natural limitation to how long an interconnect can ...
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Remote's IR signal viewed in my phone's camera is flashing. Shouldn't it look steady with a 38kHz carrier frequency?

I know I'm missing something fundamental here, but you can imagine the Google results I get trying to find this out! Shouldn't my phone cameras recorded fps/exposure be way way waayy much slower than ...
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Streaming data from MIPI CSI Camera

I'm trying to generate depth images from stereo camera at more than 1080b resolution at 60FPS. The problem right now, I would like to do deep learning on that raw data from the video camera. Right now ...
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62 views

Designing of a stereo camera concerns

I'm planning to design a depth camera. I'm considering to use the following Camera with the following specs: https://www.waveshare.com/wiki/IMX219-83_Stereo_Camera ...
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1answer
66 views

How do FLIR cameras work with multiple spectral image acquisition?

I am looking to buy a FLIR camera, but it is hard to get in contact with the company. I wonder if somebody already used, or has knowledge about my question, which FLIR cameras can capture images in ...
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114 views

XL6009 Boost Converter as 8V Camera (DSLR) External Power Supply - Camera not Turning on

I need my camera Canon EOS 7D Mark II powered in terrain for a long period of time (10 + hours, mostly idling). I bought a dummy battery with 5V to 8V boost converter (camera uses 7.2 Li-ion battery), ...
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93 views

IR vision application [closed]

I'm trying to make an IR visible object tracking device. Is there any way to convert visible machine vision camera to an IR vision camera datasheet link: https://wiki.dfrobot.com/HUSKYLENS_V1....
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Need help with identifying the function of 3 wires in camera flash circuit

I have this camera flash circuit from a Ricoh AF-70. I’m trying to identify what function the 1,2 &4 wires does in this circuit? The blue wire is definitely to trigger the high voltage to fire the ...
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25 views

Finding I2C Slave Address For MT9P031 image sensor

Here is the datasheet: https://www.onsemi.com/pub/Collateral/MT9P031-D.PDF On page 12 of the datasheet, it shows an example of I2C communication. The first byte sent is 0xBA. Is this the slave address ...
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What is this part of the webcam called?

What is this camera component called? I was recently taking apart my old laptop and found that the webcam module had this circular component that screws on and off. I saw that it contains the lenses, ...
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808 views

HP Pavilion DV6000 webcam wiring

How can I wire this 4 pin webcam from my old HP Pavilion DV6000? I can't find any website that can help me with this 4 pin webcam. As you can see it the image below, the wires black and blue are ...
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34 views

Cheap surveillance camera solution with Raspberry Pi 3b+

I have a raspberry Pi 3b+ and I would like to attach a camera to it to create something like a CCTV for surveillance. I want to use 13MP f/2.2 aperture camera from a broken smartphone with Sony IMX135 ...
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1answer
70 views

Composite video from rear car camera - bad signal (wrong levels?)

I have bought a car radio (AMPrime 4022D) that has ability to connect rear camera to it, so you can see the image on its screen. The problem is that radio doesn't detect the signal (blue screen). But ...
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1k views

Is that possible to modify and connect a dead smartphone camera to a PC using USB cable? [closed]

There are many videos on YouTube that explains how to use camera of a dead smartphone and connect it to phone by USB-OTG. However I want to know Is that possible to modify and connect a dead ...
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1answer
97 views

Using SerDes with Jetson Xavier AGX

I need to incorporate two types of cameras (2x connected by a long wire + 7x connected near the Xavier). For such lengths, I had to use a Serializer-Deserializer (SerDer) to make the camera wires more ...
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30 views

Camera - Auto Night Vision “Mode” (ON only when dark)?

I am wondering how night vision "mode" could be automatically switch on & off in commercial CCTV? Something like this: https://www.youtube.com/watch?v=ilaXGtsx-DU (video demonstrate CCTV ...
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105 views

How can I prevent microwave radiation absorption by a camera lens/electronics inside the microwave (behind the shield)?

Let's say I put in an endoscope like camera with the lens at the inside edge of the box and the wire behind metal sheet. Here's a mockup: Possible idea: The lens is behind a holes but the hole is ...
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2answers
96 views

What kind of camera could work inside a microwave?

I want to record video inside a microwave, is it possible? What if it was hid behind a shield or the same galvanized material as the door? The detailed structure may completely ruin visibility tho
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1answer
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Need help identifying this little chip

So, I was changing some thermal material on my Sony A5100 camera, but somehow must've damaged one of the chips (below). Right now, the LCD display has a slight green tint to it. I swapped an LCD ...
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1answer
280 views

Connecting laptop webcam 04081 to USB cable

After seeing some youtube videos, I wanted to reuse an old laptop webcam and solder it to a USB cable. This one comes from an ASUS X301A and looks like this: AFAIK, The USB cable needs 4 wirings: ...
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38 views

How to find a compatible upgrade for a phone camera [closed]

I have a set of Android video glasses which are based on the PRIXTON C18 phone. I'd like to upgrade the camera to a better one - specifically one that supports changing the shutter speed as the ...
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1answer
65 views

Is it possible to hack/edit a camera's software to add custom features? [closed]

I am not a programmer but I am curious if it's possible to hack my Canon camera to be able to work in sync with a custom gimbal that I'm thinking of building. I want to add an object tracking feature ...
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206 views

Cropping of OV2640 full resolution, understanding the registers

I'm working with a k210 chip on a sipeed maix go, and I'm trying to process UXGA pictures. The chip can't handle having more than QVGA pictures in memory, so I want to only retrieve a "crop" of the ...
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168 views

Connect an I2C camera to computer via USB as a webcam

I took out of an old security camera its circuitry and I am trying to figure out a way to connect it via USB to my computer and use it as a standard webcam. Is it possible? Here are the front and the ...
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1answer
36 views

Monitor digital display with camera and store data [closed]

I've got a device I purchased which displays voltage, amperage, etc. for the connected device. I did not build the device, nor does the manufacture provide any type of interface or storage options. It ...
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210 views

How to interface camera sensor to microcontroller

I want to make robotics vision project. Ideally one would want to go with hi tier expensive sensors, they have no such problem, because they are interfaced directly to x64 CPU, via PCIe bus. Thus, raw ...
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Unknown limit switch on a commercial camera iris diaphragm

I am working on this spare iris of a Canon EF 24-105 mm lens for an hobby project. The iris has 8 pins: 4 related to a micro-stepper motor; 4 linked to some sort of limit switch. The limit switch ...

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