I have SD cards in all my cams and use them to monitor the critter activity around the house and garden. Usually there’s at least one event on one of them when I check in the morning, but lately there have been No Events. When I check the SD cards, invariably they are full so I reformat them.
I thought I saw something somewhere about the SD cards overwriting themselves when they get full, or do I need to monitor that?
It will overwrite the data as you heard. Even though, I make it a habit to format the cards occasionally
The oldest files on the card get written over once the card is full. You don’t need to monitor it but you should check and see how much data is on the card once in a while so you know about when the over write will start. I also format my cards about once a month just because.
mine stopped recording
I have been using 256GB High Endurance SD Cards recording continuously in all my cams for about a year. I haven’t formatted any cards since installing them and they continue to record and overwrite the oldest videos. As each day is recorded, the oldest day is removed and inaccessible. It does overwrite files minute by minute, but I don’t check the SD Video enough to notice that.
i use sandisk extreme 128gb the one recommended on v3
when it is near full camera does not overwrite oldest day and does not record new
I use Sandisk 32GB High Endurance SD Cards in all my v3 cameras. I believe a couple of years ago Wyze recommended not using larger cards at that time. 32GB cards are fine for me which hold about 4 days of Continuous Recording video. I have never had to reformat any of my cards and they auto delete the oldest SD card files as they should. I have Cam Plus Lite with 12 second Cloud Event videos, so I frequently view the Playback of what is on the SD cards to see more than the 12 seconds in the Cloud. I will experiment with larger Sandisk High Endurance SD Cards when my 32GB cards die. I figure for now, if it ain’t broke, don’t fix it.
If you are having problems, maybe experiment with some of the SD card brands and sizes forum members have stated having success with.
i did not purchase product for experiments but use with sd cards wyze recommended
At the time, Wyze did not have the license to implement the Firmware code necessary to utilize cards larger than 32GB which are ExFat formated. They have since purchased that license so that all cams now support larger SD Cards formatted in ExFat. However, the base cam hardware chip still requires a 32GB FAT32 card when flashing the firmware since that is a OS function.
I have 256GB High Endurance SD Cards recording continuous in every cam with a slot and have anywhere from 3 to 4 weeks of video Hx depending on the cam and conditions. All of them overwrite the oldest date when full. Except for the OG, they all record continuous to the SD Card when the internet or WiFi is down.
@peepeep puts his in the laundry to get the FAT really clean. 
Cleanliness is key to frogliness. 
@peepeep was spotted in Glen Carbon Illinois!
this one?
