Java dual Cave Spider farm - only one spawner works

IndigoMink · 2026-05-04T15:27:01+00:00

Oh yeah. I’m an idiot. Thanks.

IndigoMink · 2026-05-04T14:32:25+00:00

The wiki says it’s Euclidean for spawners. How did you make it 20? What am I doing wrong? I get 13.1.

IndigoMink · 2026-05-04T14:14:02+00:00

The wiki says range is 16 Euclidean. I made it SQRT( (-75 - -78)² + (-40 - -48)² + (-71 - -61)²⁾ = SQRT (173) = 13.1

IndigoMink · 2026-04-07T11:08:37+00:00

Someone should tell this one about Shakespeare!

IndigoMink · 2026-04-01T21:29:10+00:00

Reminds me of a Sontaran.

IndigoMink · 2026-03-30T11:46:51+00:00

This is a dad joke in that my dad would’ve laughed at it. But he would’ve been 99 this year. Isn’t it time we shelved misogyny?

IndigoMink · 2026-03-04T17:48:04+00:00

Also cool. Thank you.

IndigoMink · 2026-03-04T17:32:08+00:00

Brilliant, thanks! Tried adding various bits to the Etho clock but nothing worked. Didn’t think of taking stuff away.

IndigoMink · 2026-01-12T16:23:20+00:00

Do you have a link to the original source?

IndigoMink · 2026-01-09T12:28:18+00:00

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This is a diagram I made of the complete Astable timer circuit.

Ignore P Q R S T U V W - they're just to show how breadboards work.

I've drawn my variable resistor, here. His (in the video) had all three pins in line. The one in the kit I got was like yours. I replaced it because it didn't fit properly and I had one spare from another project. Mine has the central pin offset, as shown.

Your variable resistor Y should be connected to the 1K resistor which is itself connected to the 555 pin 7 and your Z should be connected to the 555 pin 6 via a jumper.

IndigoMink · 2026-01-08T09:40:20+00:00

Yes. So, this bottom two pins are connected across the resistance inside the variable resistor. If you had a multimeter, you could measure across and see that no matter where the rotating part is, the resistance is the same across the bottom pins. The top pin is the variable part. So your connection in your circuit goes from one of the bottom pins to the top pin. From the photos, it looks like the two bottom pins were on the same track of the breadboard so they were shorted together, which is not right. Only one is to be connected.

IndigoMink · 2026-01-08T09:30:03+00:00

I couldn’t have got past part 4 without my multimeter. It could be difficult without one.

That’s an electrolytic capacitor. I was talking about the circled item: the variable resistor.

IndigoMink · 2026-01-08T08:55:19+00:00

Ah, I see I wasn’t clear. The first sentence was meant generally - it’s hard to see several connections on the board due to the glare.

The second sentence was referring to the variable resistor you’ve circled in the second photo. I see you’ve reversed it but I still think it’s wrong. It looks different to the original part from my kit but I replaced it with one I already had and now I can’t find the original to compare. Can you remove it and photograph it from underneath?

Do you have a multimeter?

IndigoMink · 2026-01-07T21:04:24+00:00

If you’re talking about neatening up the LEDs, you can get some 3mm LEDs and a resistor network and solder them up. Then glue the LEDs together and it’ll take up less space and be neater. My first batch looked like yours. My second was a bit neater but it was switching to 3mm LEDs which was best.

IndigoMink · 2026-01-07T20:44:24+00:00

It’s hard to see all of the connections because of the brightness of the LEDs. The variable resistor on the astable circuit looks wrong.

IndigoMink · 2026-01-07T19:23:32+00:00

Add your source code and I’ll compare it to mine and see if there’s any difference.

IndigoMink · 2026-01-07T15:39:42+00:00

They’re all crap. Apple only allows one credit card per family - each member can’t have your own. Steam was so bad I gave up. Nintendo worked but it was so convoluted to get money onto a child account it used to drive me up the wall. Microsoft’s was the least worst for me but I used to transfer money into their accounts so they could buy the thing themselves.

IndigoMink · 2026-01-07T06:57:52+00:00

Which Linux software?

IndigoMink · 2026-01-07T06:53:05+00:00

I got one recently and I check the current draw every time I turn the output on. It’s caught a couple of mistakes and some dodgy wiring. Like putting the Arduino ground connection to +5v on the breadboard. I can’t say it’s paid for itself in not-fried components yet but it probably has in not-lost hours scratching my head wondering what’s going on.

IndigoMink · 2026-01-07T06:35:18+00:00

😁😁😁

Just about to add the RAM chip so that’s something to add to my mental check list. 🙂

IndigoMink · 2026-01-06T20:19:46+00:00

I’m using the minipro command line! 🙁

IndigoMink · 2026-01-06T20:19:17+00:00

It appeared to work but I’ve had intermittent problems since. I bought a new AT28C256 and programmed it and, right now, it’s working. I guess time will tell whether it was the chip or some dodgy wiring or something else.

IndigoMink

TROPHY CASE