I don't have WiFi available and I want to DIY this as I want to get my=20 feet wet with video. Here's more info on what I'm trying to do... I have a few warehouses with some of my cars and other stuff, and after=20 a couple break-ins, I want to make a device that I can mount on the wall=20 outside to record video once it detects motion. I won't have access to power, so it will have to be battery powered. =20 This is why I don't want an O.S, because the boot time would miss=20 critical video as soon as it detects motion. I don't want to go with=20 canned solution as I want to tie various sensors to it, and some=20 specific interfaces. I don't need HD video as it seems 600-line video is decent for security=20 systems. Cheers, -Neil. On 3/8/2018 3:27 PM, Jean-Paul Louis wrote: > Why not use a wifi IP canera? you can get one for less than $40. > http://hackaday.com/2018/03/05/customising-a-30-ip-camera-for-fun/ > > > > Just my $0.02, > > Jean-Paul > N1JPL > > > >> On Mar 7, 2018, at 11:31 PM, Neil wrote: >> >> I discovered that too. Seems that the TTL NTSC means NTSC analog output >> with TTL serial control. >> I'll need to figure out how fast that ADC would need to be. >> >> I now see JPEG camera modules... I need to figure out the protocol for t= hat. >> >> Cheers, >> -Neil. >> >> >> >> On 3/7/2018 11:00 PM, Jean-Paul Louis wrote: >>> Neil, >>> That camera has only analog output, so you will need a fast ADC to reco= rd it. >>> >>> >>> >>>> On Mar 7, 2018, at 9:22 PM, Neil wrote: >>>> >>>> I want to record video of at least 1.0MP to SSD (or other memory) for >>>> about 3-5 minutes. 15FPS is fine. But I really want to avoid SBCs >>>> because of the OS (and more specifically the boot time), so wondering >>>> what it would take to do this with a microcontroller. >>>> I'm looking at camera modules similar to this... >>>> https://www.aliexpress.com/item/600TVL-1-4-1-8mm-CMOS-FPV-170-Degree-W= ide-Angle-Lens-Camera-PAL-NTSC-image/32570417705.html >>>> >>>> I believe (haven't yet found a clear answer) that these cameras do 24 >>>> bpp (Is this correct?), and if so I'd need 1 MP x 3 bytes x 60 secs x = 5 >>>> mins =3D 900 MB to store raw data. >>>> That's no prob with an SD card, but I expect bandwidth will be an issu= e, >>>> so I'd need to compress it. This is where I draw a blank... what does >>>> it take to compress video? >>>> >>>> I'm clueless on video, so wondering if a microcontroller (say PIC32 or >>>> ARM) would be able to accept TTL NTSC video at this rate and compress >>>> it, and then store it. Or is there a specialized processor I can use = to >>>> accept the NTSC video stream and store it to SD? >>>> Should I use some other protocol other than NTSC for this perhaps? >>>> >>>> Cheers, >>>> -Neil. >>>> >>>> --=20 >>>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >>>> View/change your membership options at >>>> http://mailman.mit.edu/mailman/listinfo/piclist >>> Just my $0.02, >>> >>> Jean-Paul >>> N1JPL >>> >>> >>> >>> >> --=20 >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .