Hello, I am currently trying to connect a ov7670 camera module to an arduino uno along with a momentary push button switch and a 9 volt battery. I don't know how any of the wiring would work, and I could not find a tutorial I could understand (i'm new to arduino). I was hoping for help on the wiring, code and what sd module would work best in this case. Thanks!
I'm not going to tell you how to wire it up (there are plenty of examples on the Internet) but make sure your camera module has the FIFO capability (you will know because it has the AL422 chip on the module). Without that, the Arduino is too slow to read all the memory to take a meaningful snap. Also the camera is 3.3 volts so watch that connection.
Any SD module will work but I recommend the mini size simply because the full sized ones as so big! It will undoubtedly use the SPI bus. Try one of the Chinese warehouses for inspiration (Bangood, AliExpress, Gearbest just to name a few). If you cannot use those due to your location in the world use eBay; not as good a selection or prices but better than buying locally with the high prices. Example: https://www.aliexpress.com/item/1pcs-lot-Micro-SD-card-mini-TF-card-reader-module-SPI-interfaces-with-level-converter-chip/32735273502.html
PS I'm doing a video in the next month or so specifically on this topic. Can you wait that long?
Thanks! I will definitely check out your video next month!