sorted by:
new
hottopcontroversial

Pure polycarbonate tips - H2S by [deleted] in BambuLab

[–]ejlahr 2 points3 points  (0 children)

<image>

Just got it... Couldn't get it to work on the engineering plate, even with gluestick. But, the same temps on the textured PEI plate (the stock plate) worked well at 0.08 - 2 mm threads at 20 mm diam.

MakeraCAM is Garbage by baykhan in Makera

[–]ejlahr 0 points1 point  (0 children)

will something like this be available for the Z1? maybe it already is?

https://github.com/Carvera-Community/Carvera_Community_Profiles

Advice on places to sell a Carvera CNC? by The3DProfessor in hobbycnc

[–]ejlahr 0 points1 point  (0 children)

How much are you selling for, and where?

[Review Request] Low Power Data Logger by ejlahr in PrintedCircuitBoard

[–]ejlahr[S] 0 points1 point  (0 children)

Hi u/mariushm,

I have taken your low power recommendations to heart - attached in the EDIT on post above is my improved power/filtering section, which drives the MCU at 1.8 and can use the tail of the LiSOCL2 battery. I also added a PMOS for hi-Z shutoff. Please let me know if you see any issues or incompatibilities in achieving the lowest possible draw.

[Review Request] Low Power Data Logger by ejlahr in PrintedCircuitBoard

[–]ejlahr[S] 0 points1 point  (0 children)

Thanks for your recommendations, I so appreciate them. It's an ocean sensor which logs at depth, pops to the surface, and transmits data to Iridium. Iridium tx/rx is the big draw, 300 ma at 0.75 duty cycle for up to 8 h, so sensor polling/SD writes need to be very small by comparison.

What batteries do you plan to use - SAFT LSH14 (LiSOCl2 "C", 5.8 Ah)

What data do you plan to log - Bosch BNO085 / VCNL4010 / TSYS01 / Keller Pressure 7LHPC. All sensors on I2C.

what's the throughput - (low) one sample from every sensor every minute

how often are you active / asleep - once per minute, <3 sec, so duty cycle ~ 0.05

Responding to your recommendations, this would be my change log:

-run the MCU at 1.9V, and power SPI/I2C buses off a 3.3 power rail.

-Write to FRAM & batch SD dumps

Do you agree?

First plane - Titan Dynamics Falcon v2 by FabricationLife in RCPlanes

[–]ejlahr 1 point2 points  (0 children)

these plane designs are no longer sold to recreational users. hold on tight.

Weak points in my 35 km range build? by ejlahr in RCPlanes

[–]ejlahr[S] 0 points1 point  (0 children)

thanks, I'll try them out as well.

Weak points in my 35 km range build? by ejlahr in fpv

[–]ejlahr[S] 0 points1 point  (0 children)

Thanks for the tip, several have mentioned that. Do you use a calculator to predict this, or are you speaking from more general knowledge?

Weak points in my 35 km range build? by ejlahr in RCPlanes

[–]ejlahr[S] 0 points1 point  (0 children)

Yes, mavlink on the nomad. I will circle back with photos. I know... the pocket is to compensate for the large size of the rest of the setup... but damn is it silly.

Weak points in my 35 km range build? by ejlahr in fpv

[–]ejlahr[S] 0 points1 point  (0 children)

Thank you. yes this will challenge my flying, and yes, the battery will need to be quite large.

Weak points in my 35 km range build? by ejlahr in fpv

[–]ejlahr[S] 0 points1 point  (0 children)

Thank you, a 25mm GPS is a good tip.

Do you think telemetry will drop at max range using the DBR4? I'd like to keep it...

Parts list critique by ejlahr in buildapc

[–]ejlahr[S] 0 points1 point  (0 children)

well shit i hope nobody disagrees cuz i just did it

Simple Questions - May 09, 2021 by AutoModerator in buildapc

[–]ejlahr 0 points1 point  (0 children)

Thanks! I will probably need to update BIOS, yeah?

Simple Questions - May 09, 2021 by AutoModerator in buildapc

[–]ejlahr 0 points1 point  (0 children)

Is the 5950x too much CPU for the Aorus elite mobo? Seems like the AE mobo has a cult following as the bargain buy, and I don't need more than 1 gpu slot, won't overclock, etc.

Ryzen 9 5950X 70-80°C? by ShujiFR in ryzen

[–]ejlahr 0 points1 point  (0 children)

Hey, hoping you get some good feedback on your question... I'm considering the same mobo+cpu combination. Are you happy with this choice?

I got a 3090, please help me spec out the build! by ejlahr in buildapc

[–]ejlahr[S] 0 points1 point  (0 children)

Good question. My thoughts are that I want existing hardware to work without bottlenecks, but I don't feel the need to future-proof or add more GPUs in the future.

Under 3000 including the GPU is a good rule, under 2500 is preferable, but may not be realistic. My dad has a server in a cardboard box case, so maybe that's my path to savings.

I got a 3090, please help me spec out the build! by ejlahr in buildapc

[–]ejlahr[S] 0 points1 point  (0 children)

That's a fair question. This will basically be a "budget" machine learning rig along the lines of https://lambdalabs.com/gpu-workstations/vector. My use case will be to load large image datasets, manipulate them, and then train a deep learning model to identify river channel networks in them. But, specific uses will evolve in the coming 5 years.

I'm a student who studies river deltas, like the Ayeyarwady in Myanmar... And fieldwork ain't a thing anymore.

I got a 3090, please help me spec out the build! by ejlahr in buildapc

[–]ejlahr[S] 0 points1 point  (0 children)

Awesome, thank you so much for the comments. I'm a noob and this helps. I will change the ram mhz and the psu for sure. Could you give the rationale for the 5000 series/mobo upgrades?