Electronics Design

Arduino Relay Board

I bought this Arduino Relay Board. https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 It's about 33mm...

42 comments posted 4yrs

posted by sylvia

42 comments posted 4yrs posted by sylvia

National Debt Hits $30 Trillion; Rising Rates May Boost it

Rising Interest Rate Could Mean Rising Debt Costs Now the concern is that rising interest rates will increase the gover...

0 comments posted 4yrs

posted by bloggs.fredbloggs.fred

0 comments posted 4yrs posted by bloggs.fredbloggs.fred

eclips oscillator

https://www.dropbox.com/s/627ifxuw3rsexj2/EP11_Oscillator.jpg?raw=1 Wonder how that will work. I'll have one of my peopl...

11 comments posted 4yrs

posted by jlarkin

11 comments posted 4yrs posted by jlarkin

strange oscillator

Not actually a Hartley, bacause the Ls are not coupled. Version 4 SHEET 1 1220 836 WIRE 528 112 288 112 WIRE 288 144 28...

42 comments posted 4yrs

posted by jlarkin

42 comments posted 4yrs posted by jlarkin

OT. Record Lightning Shot

A lightning bolt set a record for distance almost a couple years ago. April 2020, 477 miles, cloud to cloud.

0 comments posted 4yrs

posted by deanh6929

0 comments posted 4yrs posted by deanh6929

funny FIR on the Raspberry PI

Got some pimoroni MLX90640 based FIR camera module: https://shop.pimoroni.com/products/mlx90640-thermal-camera-breakout...

0 comments posted 4yrs

posted by pNaonStpealmtje

0 comments posted 4yrs posted by pNaonStpealmtje

BEOS 3e is shipping

Hi, all, I hear from an acquaintance that BEOS 3e is shipping. For those who might be interested in a copy, there's a 20...

13 comments posted 4yrs

posted by pcdhSpamMeSenseless

13 comments posted 4yrs posted by pcdhSpamMeSenseless

nonrandom mutations

https://www.jpost.com/science/article-695101 This makes sense. If it's not impossible and it's beneficial, evolution wi...

100 comments posted 4yrs

posted by jlarkin

100 comments posted 4yrs posted by jlarkin

Digikey tracking

If I look at a part on Digikey, ads for that part appear all over the web. I wonder how much they pay per clickthrough....

8 comments posted 4yrs

posted by jlarkin

8 comments posted 4yrs posted by jlarkin

What's the deal with the Pad2Silk clearances?

...of those boardhouses.. And can I ignore them? (coz the layout program has loads of footprints with silk over the pads...

5 comments posted 4yrs

posted by klammerj

5 comments posted 4yrs posted by klammerj

160 vdc power rabbit hole...

Before I got too far down the rabbit hole... sanity check time :-) tl;dr: I want to run servos off nonisolated 160 vdc...

9 comments posted 4yrs

posted by dj

9 comments posted 4yrs posted by dj

Wrote a program for Raspberry Pi 4 to drive small 128x64 pixels OLEDs, any interests?

Wrote a program for Raspberry Pi 4 to drive small 128x64 pixels OLEDs this uses GPIO pins and Linux kernel i2c. The C c...

6 comments posted 4yrs

posted by pNaonStpealmtje

6 comments posted 4yrs posted by pNaonStpealmtje

Internet Speed Tests

I've always wondered how good Internet speed tests really are. They seem to have a tendency to have a significant delay...

22 comments posted 4yrs

posted by gnuarm.deletethisbit

22 comments posted 4yrs posted by gnuarm.deletethisbit

Low-leakage PNP or PMOS

Hi, knowing that you often take parts way beyond their specs, I would like to use your wisdom. I need a high-side contr...

11 comments posted 4yrs

posted by bombald

11 comments posted 4yrs posted by bombald

S mart

Electronic parts https://www.walmart.com/search?q=Bat54c The new radio shack? Cheers ----Android NewsGroup Reader---- ht...

1 comments posted 4yrs

posted by martin_riddle

1 comments posted 4yrs posted by martin_riddle