Dave - Nexus Circuits

Building practicle electronic projects and circuit ideas ⚡ KiCAD & Altium tutorials and PCB design kits 📟

[Dave - Nexus Circuits @nexuscircuits]

@blind_via Classic Dunning Kruger effect. They'll learn (the hard way).

[Dave - Nexus Circuits @nexuscircuits]

@MakeAugusta Maxim says "Hold my beer..."

[Dave - Nexus Circuits @nexuscircuits]

@blind_via There's never enough

[Dave - Nexus Circuits @nexuscircuits]

Building hardware is wayyy cooler than writing code.

[Will @willreil]

LETS GOOOOO IT WORKS!!

This is my first functional hardware project, it solves a paint point I deal with daily.

It feels so cool to have this own it’s own PCB that I manufactured.

I am really proud of this project despite how simple it appears.

Next up is making a case!

[Dave - Nexus Circuits @nexuscircuits]

@fishPointer 9/10 for having a National Semi Linear Apps Handbook

Just needs Linear Tech Volume 1-3 for the full 10.

[Dave - Nexus Circuits @nexuscircuits]

If there's no silicon heaven, where do all the little calculators go?

[Dave - Nexus Circuits @nexuscircuits]

@IDV_FPV When you're 40+ you go up in size every 10 years.

I'm currently 0603, but 0805 looks very tempting now.

[Dave - Nexus Circuits @nexuscircuits]

@eevblog

[Dave - Nexus Circuits @nexuscircuits]

@blind_via I once contacted a subby who had fitted approx 20 electrolytic caps the wrong way round. They fixed this by physically twisting them 180Deg on the board without desoldering.

We never used them again.

[Dave - Nexus Circuits @nexuscircuits]

@blind_via That still doesn't look enough

[Dave - Nexus Circuits @nexuscircuits]

Or compensate the tants ESR with a series resistor.

[stacksmashing @ghidraninja]

If the datasheet says to use tantalum capacitors - then use tantalum capacitors!

Blue = Ceramics
Yellow = Tantalum

[Dave - Nexus Circuits @nexuscircuits]

@kicad_pcb Protel SE99 which later became Altium DXP had this way back in 1999.

[Dave - Nexus Circuits @nexuscircuits]

Why can't manufacturers have two variants of the same RS485 driver?

A-B
B-A

[Dave - Nexus Circuits @nexuscircuits]

@i2cjak Not tried it, but that sounds like a production nightmare.

[Dave - Nexus Circuits @nexuscircuits]

Don't sweat the small stuff.
+1.5 ohm is less than 0.1dB line loss

[Dave - Nexus Circuits @nexuscircuits]

Provide so much detail that a beginner engineer could understand.

[Dave - Nexus Circuits @nexuscircuits]

Your schematics should have as much detail as possible:

1. Full Manufacturer Part No
2. Voltage values across the circuit
3. Brief description of each section of the design
4. Any complex IC's should have internal block diagrams (exc MCU's).
5. Notes for further details.
...

[Dave - Nexus Circuits @nexuscircuits]

What if one day you could only place an item in your basket if you have a very good social credit score (+4.2)

[stormcab @stormcab]

Hey @sainsburys you’ve not only made the chocolate unstealable, it’s also unsellable. Can’t even get it out without ripping the product to pieces. The whole shelf has these plastic sliders, so no gaps to slide them out of the way?????

[Dave - Nexus Circuits @nexuscircuits]

@i2cjak @willreil I thought he was after part numbers.

[Dave - Nexus Circuits @nexuscircuits]

@MakeAugusta Classic