u need an FTDI-programmer for it of course, 1,50$, Ebay->(LINK)
a very good tutorial about setting up the ESP32-Cam, how to connect to the FTDI-programmer + sketch is here->https://randomnerdtutorials.com/esp32-cam-video-streaming-web-server-camera-home-assistant/
the sketch is also very „easy“ (see on randomnerdtutorials) and for „flashing“ u only need to set a jumper on IO0+GND (and remove it afterwards of course 😉 )..The .ino/sketch is also here->(LINK)
the picture-quality is a little bit better that u might expect in the worst case 😉 and now i use the ESP32-cam directly over (DHCP)-WLAN connected and display it in a browser (simple IP-adress in the bar) or via some dyndns-provider (use here spdyn.de in Germany)..
u only need to port forward (90 to 80 for example) it directly to the device..
very nice thing, use a raspberry pi zero wh as a webserver, mqtt-broker „in between“ and will also use then some ESP32 for solarpanel-control/measure the current from the batteries and display it on a website/handy etc..
more to come..also ordered some „step up module“ to easier power them with 5V/2 cables“, Ebay,->(LINK)
by that i made a new „category“ (on the right)->“SOLAR“ 😉 ..i will post there anything about 5V/12V solar-panels, autotracking them etc. !! all with some Arduinos,ESP32,Raspis etc..very much more to come,
(above picture + description is from : http://b04forum.dl3ndd.de/viewtopic.php?f=18&t=365)
but many greets from here !! 😉 (but no worry->essabre-90xx-rpi.sfb2.com will stay absolutely more hifi-related !! 😉 )