Leif Adamec Rydenfalk

Creator of ce-net. Simulating the entire world. Foreman is helping me.

[Leif Adamec Rydenfalk @adamecrydenfalk]

WE ARE LIVE. 24/7.

The world we're simulating, on air nonstop: every fire burning now run forward on real terrain, 94,030 factories, ports, bridges. One live globe.

In 200 years every big decision gets tested on a twin of the planet first.

https://t.co/s7cDnoLRmf

[Leif Adamec Rydenfalk @adamecrydenfalk]

@CosmicDude3000 My own system. It runs my business end to end

[Leif Adamec Rydenfalk @adamecrydenfalk]

Event day!

[Leif Adamec Rydenfalk @adamecrydenfalk]

@justdavido7 @solidSF I can do this for you. Check out https://t.co/1sRZW6Wq18

[Leif Adamec Rydenfalk @adamecrydenfalk]

@benjiianc @kodjima33 the DIY to manufacturing jump is the chapter I want. how many units did they hand build before a factory took over

[Leif Adamec Rydenfalk @adamecrydenfalk]

@lukas_m_ziegler @AMD @theworldlabs the chip company buying the world model is the tell. a robot that can't reason about the room before it moves is just an arm with good servos

[Leif Adamec Rydenfalk @adamecrydenfalk]

@deedydas @anmolm_ @imDhananjay capex is what kills robotics early. we never bought a print farm, our robot parts run on other people's printers through a network. the capex line turns into a per-part cost and the seed money goes into the robot

[Leif Adamec Rydenfalk @adamecrydenfalk]

@benjaminliang78 batteries got us first today. 15 servos stiffening at once pulled our 2S pack down to 5.5 V and the robot went limp on purpose. the ceiling is real even at desk size

[Leif Adamec Rydenfalk @adamecrydenfalk]

@luellamech the actuators decide that price. our small walker in shenzhen runs 15 bus servos and they're most of the bill. would love to know what FF puts in the joints at $2,490

[Leif Adamec Rydenfalk @adamecrydenfalk]

Debounce a button with just a capacitor?

Claude ran 800 bouncing presses per cap, 10 kΩ pull-up:
- 47 nF: 81 % clean
- 100 nF: 99.5 %
- 220 nF: 100 %, 1.6 ms lag

Yes. 220 nF.

Stuck on something like this? Reply with your problem and we'll simulate it.

[Leif Adamec Rydenfalk @adamecrydenfalk]

Can a PWM solar controller give more amps than the panel?

Claude solved a 36-cell panel all day:
- PWM: 14.6 A in
- MPPT: 18.5 A
- daily gain: +12 % clear, +11 % cloudy

Not the 30-40 % people quote.

Stuck on something like this? Reply with your problem and we'll simulate it.

[Leif Adamec Rydenfalk @adamecrydenfalk]

IRF540N overheating at 1.4 A?

0.6 V across it is 0.43 Ω, 10x the datasheet. Claude ran the thermals:
- real 44 mΩ part: 31 °C
- this one: 107 °C
- at 2 A: thermal runaway

Swap the part.

Stuck on something like this? Reply with your problem and we'll simulate it.

[Leif Adamec Rydenfalk @adamecrydenfalk]

20 m of 24 V LED strip: feed one end or both?

Claude solved all 200 segments. Dimmest point:
- one end: 51 %
- both ends: 76 %
- ends + middle: 86 %

The two feeds don't fight.

Stuck on something like this? Reply with your problem and we'll simulate it.

[Leif Adamec Rydenfalk @adamecrydenfalk]

PID-tune the hotend with the fan on or off?

Claude ran M303 both ways. Dip when the fan starts:
- fan-off tune: 2.4 °C
- fan-on tune: 2.5 °C
- with a silicone sock: 0.7 °C

The sock matters more.

Stuck on something like this? Reply with your problem and we'll simulate it.

[Leif Adamec Rydenfalk @adamecrydenfalk]

@Ryan__Dunwoody HQB delivery guys are undefeated

[Leif Adamec Rydenfalk @adamecrydenfalk]

@iambasitshah yeah that's the part I'm most excited about. one robot falls over in a sim and every other one gets the fix

[Leif Adamec Rydenfalk @adamecrydenfalk]

@PinyinExplorer fair point, the sentences are rough. idioms would be a fun upgrade, which ones would you start with

[Leif Adamec Rydenfalk @adamecrydenfalk]

i didnt want to pay for a subscription so claude cloned this app in 1 hour and i open sourced it

chinese on your iphone lock screen: a new word every few minutes with pinyin, meaning and a real sentence. free, offline

https://t.co/gyt3TD597K

[Leif Adamec Rydenfalk @adamecrydenfalk]

ESP32 + soil sensor on a battery, waking twice a day. Claude simulated 4 builds:
- dev board: 7.5 days
- sensor on a GPIO: 11.7 days
- bare module + HT7333: 983 days

Sleep current decides it.

Stuck on something like this? Reply with your problem and we'll simulate it.

[Leif Adamec Rydenfalk @adamecrydenfalk]

WHAT IF DOOMSCROLLING MADE YOU SMARTER.

Trana Learn: one idea per swipe. 164 of them in 24 subjects, from soldering and Rust to guitar chords.

Swipe for the next. Double tap to keep it. Tap More for the whole lesson.

No account. Free:
https://t.co/6Z4P4HptwR

[Leif Adamec Rydenfalk @adamecrydenfalk]

Airbnb for compute.

List the machine that sits idle at night. Jobs book it like a spare room. You keep 80% of what each job pays, and jobs cost half of cloud list price.

https://t.co/HN4M3IrCPK

[Leif Adamec Rydenfalk @adamecrydenfalk]

@shiyuzhao66 congrats on the launch! arms on a drone is a hard one. how do you deal with the kick when it grabs something heavy?

[Leif Adamec Rydenfalk @adamecrydenfalk]

This is CE, Compute Environment.

Open C, and an E whose three threads end in nodes. A job takes whichever thread has room. Each node is a machine. The C stays open because anyone can join.

List yours: https://t.co/HN4M3IrCPK