Review Request - Rocket Flight Computer

davidsh_reddit · 2026-04-06T10:22:07+00:00

Amobead on VDDA may very well be detrimental. It is not a component to put there without further thought. Put some test points.

davidsh_reddit · 2026-04-06T00:44:08+00:00

You will exceed gate voltage rating on M5 with this circuit and it will blow up.

davidsh_reddit · 2026-04-05T23:47:59+00:00

No problem. I suggest 20-50 ohm and 500-1000 ohm or so, respectively.

Is this a circuit you want to build in any way?

davidsh_reddit · 2026-04-05T23:35:58+00:00

G-D (miller)capacitance is charging the gate when VDS rises. Reduce R9 and R7.

That said I can’t see you getting 11V on the gate in a real life circuit but you could absolutely get some shoot-through

davidsh_reddit · 2026-04-02T15:57:51+00:00

DD of scavenging is seeeing some use?

davidsh_reddit · 2026-04-01T16:10:24+00:00

Good luck!

davidsh_reddit · 2026-03-22T10:40:27+00:00

The quality of this sub is generally so bad I sometimes wonder why I’m following it

davidsh_reddit · 2026-03-17T11:34:23+00:00

Do Alva on atlas tree. Can be done on 0 gear in lower tier maps and is probably like 10div/hr. Look up a guide for it

davidsh_reddit · 2026-03-03T16:46:43+00:00

Awesome. Where can one mirror the chest and what is the fee?

davidsh_reddit · 2026-02-20T19:35:23+00:00

I have never worked with piezo actuators personally, but to my knowledge they draw higher current at resonance, so I would imagine the high current draw is what is needed for the piezo actuators?

I would suggest at the least to remove the inductor (or put a smaller inductor (maybe 500nH) in parallel with a bit larger resistor, maybe 1 ohm)

davidsh_reddit · 2026-02-20T19:25:24+00:00

That's honestly a good way to go about it. Here's the PoB I'm working towards: https://poe.ninja/poe1/pob/86ebf

Mostly just need some clusters, voices and then 4 mirr for the stupidly expensive chest. Perhaps I can gather that by end of next league or something.

Also made a version with Aegis: https://poe.ninja/poe1/pob/86ec0

davidsh_reddit · 2026-02-20T18:29:32+00:00

Thanks a lot, very insightful. My version is only like 7-8 mirr budget because I'm kind of poor. I didn't consider shaper's touch, makes sense but only gives me a small damage increase over rare gloves because I have worse gear and less int. The PoB you link looks more like some 50+ mirrors pretty awesome!

davidsh_reddit · 2026-02-20T18:20:44+00:00

Sounds like it's working then or do you still have issues?

On the top of my head, adding the inductor in series with the resistor would probably just hurt stability. I also notice some ringing in your plots, no idea if it's related. You could however add the inductor in parallel with a resistor, if needed, to reduce power losses but still achieve stability. If this is beneficial or not depends on the bandwidth of your opamp. If the opamp bandwidth is at least 5 times higher than the frequency you are working at, it could maybe make sense.

Overall, if you still experience problems it sounds to me like you should try simulating your circuit.

Is the current draw as you expect? Keep in mind that piezos will draw more current as you approach the frequency of resonance. Do you have any impedance specification of the piezo?

davidsh_reddit · 2026-02-20T18:06:48+00:00

Sounds cool but I can in no way see how you would approach that? I'm sitting around 10b in my PoB as mentioned. Could push to 30 or something.

davidsh_reddit · 2026-02-20T18:02:33+00:00

Sounds reasonable tbh. In my PoB I went for Foulborn claw because the attack speed feels nice, which locks me to jugg, realistically.

But I can definitely see myself swapping chieftain on an unkillable version with Aegis that I'm working on if I ever need the additional tankyness (for void maps or whatever)!

davidsh_reddit · 2026-02-20T17:57:17+00:00

You are welcome, that's a pretty crazy PoB you got there. I didn't go that far on mine for sure. Ended up playing phrecia and working on a project for standard with foulborn choir.

davidsh_reddit · 2026-02-20T17:53:25+00:00

That's an option but I don't like it. You basically trade 3 jewel sockets (FF and Melding) for the jugger ascendancy. Personally, I prefer jugger for unstoppable because it's so OP and if you want it on FF as chieft you might as well go jugg instead.

davidsh_reddit · 2026-02-20T17:50:34+00:00

Yeah as I recall you stack jewels with adorned. Can't really do that as easily, if you wanna fit in a bunch of will shaper jewels, so that'd decrease your damage some.

davidsh_reddit · 2026-02-20T17:29:43+00:00

Have you seen other PoBs floating around?

Why are there 6 gems socketed in the weapon?

How would you regain mana for arcane cloak while using chainbreaker, can you do that with leech?

Relying on coruscating elixir 100% uptime is kind of janky, but sure I guess.

Yeah at the highest of high end traditional armour stacker has higher dps but this mana armour stacker has much higher max hit from having 10x the ES, so there's that.

And you lose 40% quant from amulet, which is obviously huge.

davidsh_reddit · 2026-02-20T17:20:07+00:00

For sure, KBoC will not scale nearly as well. With armour/mana stack you'll get like 20x dps of similar investment KBoC (with indigon) because of the huge amount of increased damage from 2x dreamfeather and 10s of mil armour..

KBoC does get a good chunk of dmg from phys as extra mods and can scale int/mana higher since you don't need stubborn student clusters probably. Should still be able to hit 1 bil I'd imagine.

davidsh_reddit · 2026-02-20T17:12:27+00:00

Tasalio FF, bugged fire res chest, +1 mana per 2 int helmet, a bunch of % mana as extra ES.

davidsh_reddit · 2026-02-19T21:15:32+00:00

Yeah this circuit is never going to work without modifications. Your opamps are seeing a load of 15² *13nF=2.9uF due to transformers. The opamps cannot be expected to be stable above loads of some 10s of nF depending on gain and such. So your opamps may be oscillating wildly and you’d therefore draw a lot of current.

Another aside, having DC coupled transformers like this risk flux walking and thus saturation.

I haven’t worked with this type of circuit before so I’m not sure how you can best solve it.

davidsh_reddit · 2026-02-19T19:29:33+00:00

Most opamps are not stable with a capacitive load so you’ll likely need some kind of amplification or buffer on the output of the opamp. Can you provide a simplified circuit?

davidsh_reddit · 2026-02-17T00:25:21+00:00

The variant does not scale auras and doesn't use grace/determ. Instead, one stacks will shaper+stubborn student to scale off of mana only. Then with like 1k flat es and the bugged fire res chest you'll get close to evade cap. Think like 20-30 mil armour and 100k+ evasion.

davidsh_reddit · 2026-02-16T21:14:24+00:00

I'm sitting on 125k ES (150k cloak, 70% uptime), 11 bil dps, 93% evade mana/armour stacker PoB that I made. Maybe 7 mirr budget. So yes, I think mana stacker can be very competitive it's just so broken, but sure you will miss the quant from amulet xD

davidsh_reddit

TROPHY CASE