OV5640 camera via DVP interface

RE: OV5640 camera via DVP interface

gihu — Sat, 28 May 2016 21:03:12 GMT

These datasheets are for different hardwares, I would trust on arducam documents.

RE: OV5640 camera via DVP interface

e14 Contributor — Sat, 28 May 2016 20:37:57 GMT

Auto-Focus Specification

NO. Item Specification

1 Auto-Focus Type VCM (Voice Coil Motor)

2 VCM Driver Sensor internal driver

3 Power Supply 2.6~3.3V

4 Rated Current ≤100mA

5 Resistance 16±2Ω

6 Focusing Range 10cm to infinity

RE: OV5640 camera via DVP interface

e14 Contributor — Sat, 28 May 2016 20:31:24 GMT

hmmm....

I saw that, but p.5

http://boundarydevices.com/wp-content/uploads/2014/12/CM8359-B500SA-E_V0.1.pdf

points to 2.8V

https://cdn.sparkfun.com/datasheets/Sensors/LightImaging/OV5640_datasheet.pdf

look ch 3.3

RE: OV5640 camera via DVP interface

gihu — Sat, 28 May 2016 20:19:22 GMT

Hi,

See this link:

http://www.arducam.com/downloads/shields/ArduCAM_RevC+_Camera_Shield_DS.pdf

This shield is supposed to work with the different arducams.

See at page 6 this image:

So I guess you can use your cam without connecting VCM, reset and power down.

Hope this time it helps

RE: OV5640 camera via DVP interface

e14 Contributor — Sat, 28 May 2016 20:11:30 GMT

All I can tell is the link I have already provided...I wasn't able to find anything there nor to get any response/help.

Thank you for trying to help me out.

RE: OV5640 camera via DVP interface

gihu — Sat, 28 May 2016 20:07:22 GMT

I am looking now the schematics for the arducam shield, just to know which voltage injects to the arducam, but it seems to use a 16-pin connector, quite confusing.

Do you know for which hardware or sheield is your arducam designed to?

RE: OV5640 camera via DVP interface

e14 Contributor — Sat, 28 May 2016 19:58:08 GMT

I looked at the schematics: both BB and CAM boards have the same snippet on. It confuses me, but still not too much worrying here.

M+ is a totally different story. I did ask arducam and got nothing yet... What the &^%$#@ that nobody can answer something seemingly not too difficult question.

RE: OV5640 camera via DVP interface

gihu — Sat, 28 May 2016 19:47:16 GMT

Hi,

You are right about the clock, so the best option will probably be the one you say, connect it to tp22.

And about M+, I mean check the datasheet or any info from the supplier, it will depend on what is integrated inside your hardware, some hardware add integrated voltage regulators, for example the one you say has an integrated 1.5V voltage regulator for the core, and for the analog says typically 2.8V.

RE: OV5640 camera via DVP interface

e14 Contributor — Sat, 28 May 2016 18:50:03 GMT

Thank you for reply.

PCLK goes from the camera and is input for mcu. XCLK goes to the camera and mcu output. I am pretty sure that mcu gpio should be able to handle it but want to know for certain.

What is M+ (VCM) voltage? Don't want to guess either!

I don't like any guessing games.

If someone has actual compatible arduino board with the schematics should be easy enough to answer.

RE: OV5640 camera via DVP interface

gihu — Sat, 28 May 2016 17:52:27 GMT

Hi,

About the XCLK I think that the STM32F4DIS-CAMSTM32F4DIS-CAM connects the camera clock to the PA6 so you can do it in the same way no need to modify the base board

About the VCM, as far as I know is a power supply for the auto-focus, you must check if it can work in 3V3, I think typically are lower voltages.

Hope that helps,