search

ArduCAM / Arduino

This is ArduCAM library for Arduino boards
MIT License
470 stars 348 forks source link

ArduCam Mini-5MP-Plus doesn't consistently capture images #464

Open STPell opened 4 years ago

STPell commented 4 years ago

When using the ArduCAM_Mini_5MP_Plus_Multi_Capture2SD example with the ArduCam Mini-5MP-Plus, frames are not always retrieved. When the frames are not retrieved the program gets stuck on the start capture step (output below). Additionally, when retrieving the first round of frames is successfull the next capture attempt will almost always fail.

OV5642 detected.
SD Card detected.
start capture.

When I attempt to use the streamer example mentioned in #446 (modified to allow the use of a 5MP-Plus) I get more consistent frame retrieval. However, the majority of requests are still failing.

I am powering the module with an external 3.3 V supply separate from the Teensy microcontroller driving the module.

ArducamSupport commented 4 years ago

Hello, It is possible that the camera connection is too long, causing the camera initialize failed.You can try again with a shorter cable.

STPell commented 4 years ago

Hi.

Thank you for your quick response. I shortened the wires and I still have the issue, additionally the same wire setup worked for the 2MP version of the camera.

20191213_094041

STPell commented 4 years ago

I just chucked the camera on a ArduinoMega 2560 I have and powered it off of the 5 V regulator and it seems to work fine. Can the camera be run off of 3.3 or do I need to provide it a 5 V supply?

ArducamSupport commented 4 years ago

Arducam mini 2MP and 5MP cameras support a voltage range of 3.3v to 5V.But notice that the voltage of your microcontroller should be the same the camera.For example, ArduinoMega 2560 provides 5V, the camera needs to use 5V.

phillipblake commented 4 years ago

Issue is not your setup, it is that the camera pulls more amps than the Arduino Uno is able to provide in a short amount of time. The Arduino Uno is already low power device and expects any real power requirements to be satisfied by an external power source. Power all the devices except the Arduino Uno from an external power supply and you should be good.