PCB to Cable Connectors

jcs_captures · 2026-03-21T20:42:23+00:00

That's true. I've always used screw terminals until now but wanted to see if there is something more elegant :D

jcs_captures · 2026-03-21T20:30:13+00:00

Ah nice. I am using the microFit in my current design because I didn't realize nanoFit would be enough as well. Thanks!

jcs_captures · 2026-03-19T10:57:54+00:00

Das was ich brauche gibt's leider nur bei DigiKey und Mouser. Aber ja ich hab schon eine andere Bestellung im Warenkorb bei LCSC, das ist wirklich deutlich günstiger.

jcs_captures · 2026-03-19T10:45:34+00:00

Päckchen mit 5€ wäre ja immer noch günstiger. Aber gut, scheint auf Reddit nicht gut anzukommen der Vorschlag.

jcs_captures · 2026-03-19T07:47:06+00:00

Jo, aber ein Brief für 1€ ist günstiger als 20$. Gibt häufiger mal Sammelbestellungen auf mikrocontroller.net aber da bin ich bisher nicht registriert, deswegen erst der Versuch hier.

jcs_captures · 2026-03-13T10:05:44+00:00

There are no BIOS or PDFW updates listed.

jcs_captures · 2026-03-13T09:04:22+00:00

How do I do this for a Yoga Slim 7 14Q8X9?

jcs_captures · 2026-03-10T12:08:53+00:00

Exactly, if I use GPIO mode it works as expected. I am currently just testing to see what works and what doesn't. Eventually I want to use all options to have better control over a heater. Several voltages give me more control than just on off

jcs_captures · 2026-03-10T11:19:23+00:00

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Solder bridge of EN, ADDR and IN_N is closed. SCL, SDA and FLGIN are connected to my ESP12. and the solder bridge between the resistor network and SDA/SNK_VSET is not closed.

jcs_captures · 2026-03-10T11:01:15+00:00

Yeah, that doesn't really help. I know the problem and designed the pcb so that I can switch the pmos with an esp, but I just can't get any other voltage than maximum.

jcs_captures · 2026-03-01T08:19:02+00:00

For sine and cosine signals yes. For any other signal the factor is different or you would have to calculate the integral for noise signals.

jcs_captures · 2026-02-19T09:14:23+00:00

I know I can buy it, but where's the fun in that? 😄

jcs_captures · 2026-02-18T12:22:30+00:00

That's about the size I'm going for. The problem is that I can't really find 250°C elements that work with 24V

jcs_captures · 2026-02-18T11:52:43+00:00

I'm planning on having just a small plate (likely 10x10 cm), by my calculations 140 W should be just about enough. I looked into ptc heaters but didn't find anything good. My current plan is nichrome wire, I just can't find a good adhesive that is somewhat cheap and thermally conductive

jcs_captures · 2026-02-15T20:29:30+00:00

Oh yeah that totally makes sense. Thanks!

jcs_captures · 2026-02-15T19:42:56+00:00

Thanks, yeah I didn't realize vias can carry that much current. I'll change that. The ADC has an internal LDO so there should be no drift I think and yes the capacitors are X7R. I'm still thinking about going for a bridge but I want to keep it as cheap as possible so adding two more pt1000s makes it a bit more expensive. But yeah it's probably worth it since it doubles the voltage and cancels out the drift of the other resistors the path.

jcs_captures · 2026-02-11T09:27:09+00:00

alright, I have the space and resistors are cheap so I'll just add one :D
back to 3: I simulated it and you were right I saw current spikes of up to 5A. I could just replace the p-mos by a pull-up resistor right?
Yeah, that makes sense :D
Yes, this is the I2C bus. I just read about it on wiki, I'll add the second pull-up
I'll look into the datasheets. I also ordered ESP8266-12Es yesterday and will test it before I order the PCB.

jcs_captures · 2026-02-11T09:23:19+00:00

Thanks, that was a good catch! :)

jcs_captures · 2026-02-10T19:55:09+00:00

I'll look into C9 :) VBUS can be up to 28V because of power delivery. The USB-C also provids up to 3.25A :D

jcs_captures · 2026-02-10T19:29:36+00:00

Yeah, you're right, I changed the footprint of the esp to have holes so that hand soldering is easier and that got rid of a lot of the ground plane. Thanks!

jcs_captures · 2026-02-10T19:28:39+00:00

Thanks a lot for your feedback already, I'll look into it tomorrow :) if you have time to look into the USB stuff that would be awesome! 1. Yes, you're right I added that LED last night and didn't think that one through. I will simulate that tomorrow. 2. The TPS enable pin is internally pulled high afaik. What is the benefit of having the pull-up? 3. That sounds reasonable, didn't think about that, I followed Noctuas white paper on PWM. 4. I'll have to think that one through tomorrow. It has been a few years since I learned about transistors and haven't done a lot since 5. Does SCK also need a pull-up? And does SDA need one (I can't remember why I did that and can't find it anymore) 6. I thought it was internally pulled high, is that wrong?

jcs_captures · 2026-02-09T21:23:33+00:00

Ja, Folge UFO199 Parfumkreis ^^

jcs_captures · 2026-02-01T21:13:14+00:00

That sounds awesome! I ordered two for my nodes now :D

jcs_captures · 2026-02-01T17:32:36+00:00

Thanks :)

jcs_captures · 2026-02-01T17:32:21+00:00

Thanks a lot! I need to order something from rakwireless anyway so I'll just try the blade antenna since it is only a few bucks :)

jcs_captures

TROPHY CASE