I wrote this as a reply to someone asking me how to earn the big bucks. I got carried away and I thought, why not post it as a new post so that others can see it. It wouldn't hurt right?

Anyways, there's a few routes that I use depending on the items that already I have. first route needs the ability to destroy sentinel ships. If you can fight, use this. If not, use the other route.

Route 1 starts here: Go to space to fight Sentinel ships until level 5 then destroy the Sentinel Freighter. You'll get a carrier AI fragment. The important bit here is the Carrier AI Fragment. If you have this already, then you're all set.

Use the fragment and warp to wherever it's telling you to go to. After the warp, you'll be in a Dissonant System. This means there's at least 1 Dissonant planet in this system. The AI Fragment you used will guide you to a crashed sentinel ship. (If you know how to find Populated Dissonant Systems then you can skip fighting the Sentinel Freighter and just go to a Dissonant Planet).

If you used the Carrier AI Fragment, go to the marker to pick up your Sentinel Ship. Interact with the ship and grab the items there including the Hyalin Brain. You'll also see a section where you need items to activate the ship. Take note of them. Now in your inventory, use the Hyalin brain. Follow the prompts to activate the brain and convert it into a Harmonic Brain. That's 1/3 of the item requirements to activate the ship.

Route 2 starts here. If you know how to find a Dissonant system/planet. Go there and land. You have 2 choices here, 1st choice is combat. Fight 5 waves of corrupted sentinels. After the fight, pick up the combat supplies (use your analysis visor if you can't remember where they dropped). The last one you pick up will guide you to a sentinel ship. Pick up the Hyalin Brain, and activate it.

If you don't want to fight then just keep shooting Dissonance Resonator and Radiant Shards. Then just run when corrupted sentinels see you doing it. We need A bunch of radiant shards and Inverted Mirrors from them. But most importantly, Echo Locators. Echo locators drop from killing corrupted sentinels and opening the salvaged glass you get from them or from destroying Dissonance Resonators (25% chance, I think).

Now that you have a bunch of Radiant Shards, Inverted Mirrors, a couple of Echo Locators. It's time to start Farming in earnest.

Use an echo locator to find a Harmonic Camp. In the camp, do the puzzle to unlock the terminal. You can also unlock the Multi Tool cabinet for that sweet Sentinel MT. In the terminal, you can find "Dissonant Spikes". This is what we need here. Setup a base in this camp, or just drop a save beacon so you can find your way back to it.

Follow the dissonant spike to find a downed sentinel ship. Take the Hyalin Brain (and other items). Use the brain and follow the prompts to convert it into a Harmonic Brain. Go back to the ship, and use 3 radiant shards + 1 inverted mirror + 1 Harmonic Brain to claim the Sentinel Ship.

After you claim the Sentinel Ship. Jump back into your main ship and go back to the camp. Search for another Dissonant Spike and do it again. Rinse and Repeat, until either the camp does not give you anything else when you search for Dissonant Spikes or it just points you to a crash site you've already been to before. If this happens and you're still not done with farming, then use another Echo locator to find another camp in the same planet.

Once you have all the ships you can manage (we have 12 ship slots), fly to the space station and SCRAP THEM SHIPS!

Each Sentinel ship when scrapped will give you items worth 15M at least per ship. That's for a C class. If you scrapped an A class, you may get up to 40M worth of sellable items. That does not include the modules you can sell for nannites as well as storage upgrade modules so you can add inventory to your main ship.

During the current expedition, I saw one of the planets in the spawn system is Dissonant, I went and farmed ships for about 1 hour to an hour and a half. In that time, I earned 240M units and around 3 – 4k nannites I think.

TL/DR: Farm Sentinel Ships in Dissonant Planets.

Hope this helps some people. 😀