I found the image for my Device (D-Link DIR-615, H1) which - right now - is still running OpenWRT 15.01 with Luci.
The question I have is if the webinterface (Luci) is included? For me this is necessary.
Comparing the sizes of the images (openwrt includes luci)
lede-17.01.0-r3205-59508e3-ramips-rt305x-dir-615-h1-squashfs-sysupgrade.bin with 3.268.777 bytes
openwrt-15.05.1-ramips-rt305x-dir-615-h1-squashfs-sysupgrade.bin with 3.407.876 bytes
the lede release is even smaller. I don't wan't to try if it's included because I did this already with another devices which is now "softbricked" for me. CLI is working but I can't get access to internet to install (luci)packages... anyway
Question again: Is luci included for the 4MB flash devices or does it come without?
Even more crucial than 4 MB flash is the only 32 MB RAM in DIR-615H. That will seriously hurt stability with either LEDE 17.01 or Openwrt master if you install LuCI. There are several threads about problems with 4/32 devices, e.g. LUCI slow down to death (WR1043N V1)
(I added that 32 MB to this thread's title, as that is the important issue here)
OK, sounds reasonable for me. Because of limitations or flash (4MB) and specially ram (32MB) the satisfaction (specially the experience with webgui [luci] and package management [opkg]) will be limited!
I will stay with my ralinks 4/32 on Chaos Calmer 15.05.1 for now.
Runs like my big boys (8/64, dual core machines) including plugins (e.g. travelmate, adblock). Using LuCi for everything and never had a problem. So I never suffered any limitations mentioned like usability, extensibility or any stability of operation.
Try running 18.06... I have an A5V11 with 4/32 that I need to cut out PPP just to get Luci in. I had to cut a bunch more stuff (some debugging things I think mostly) in order to get ZRAM and travelmate, and even then it just barely fits.
For 18.06 it looks like you’ll have to get creative, and I can imagine further down the road it’s only going to get harder.
different times need different solutions. Now - as with openwrt 18.06.1 - for some devices (my rt305x ones with 4MB flash for example) a self build image is somehow mandatory if you want to change password or save settings.
Here are my 2 cents how I build my images with openwrt 18.06.1 imagebuilder:
Try removing odhcpd-ipv6only. Please add it to the wiki page (https://openwrt.org/docs/guide-user/additional-software/saving_space) if it works and doesn't create problems. There may be others as well. I think you will remove more if you configure your own build by using make menuconfig and deselect "Enable IPv6 support in packages" under "Global build settings".