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Finally got the BLTouch V3 working properly. Trick? ICSP pins. via /r/ender3


Finally got the BLTouch V3 working properly. Trick? ICSP pins.

After pulling most of my hair out trying to set the damn thing up, I finally got it.

It appears that the capacitor C7 on the ZMin stop plug is preventing the Z stop signal from getting recognized properly. I didn't want to desolder anything so instead I figured "hey I already have a boot loader on this thing why not use the ICSP pins?" and went that way.

So, for the 3pin BLTouch connector, I pulled +5V and GND from the ICSP connector as shown here: https://www.th3dstudio.com/wp-content/uploads/2019/03/NoQy9AVXAXKvQiE_4kUrM2QEh1t-LVaMXA-1024×768.jpg

I then plugged the orange wire (control wire — the one that controls the plunger to come up and down) to MOSI (PB5 in AVR terms) on the ICSP header.

Then on the 2 pin connector, I plugged the white wire (sensor wire — simulates the Z stop) to SCK (PB7) on the ICSP header. Left the black wire disconnected as it doesn't matter (it's just another GND and the 3 pin connector already has one).

This way you can install the BLTouch via only the ICSP header and don't have to solder or desolder anything. You also get to keep the buzzer as a bonus. The only downside is that if you don't have a bootloader you'll need to remove the BLTouch wiring to install one, but it takes mere seconds so it shouldn't matter.

By the way, to convert between AVR pin naming and Sanguino/Arduino numbering you can refer here: https://camo.githubusercontent.com/53c057cbf8ec1f640fd366b17ae249c36f072bbe/68747470733a2f2f692e696d6775722e636f6d2f654949624137372e6a7067

On the same line you can see: AVR style pin naming, Arduino style numbering and what the pins are configured to do.

You're looking for the MISO/MOSI/SCK lines for the ICSP header. Leave the RESET pin alone.

I then installed Klipper firmware while I was at it (since I already had an OctoPi setup) and configured PB7 as pull-up to 5V. I then added

pin_up_touch_mode_reports_triggered: False

to my [bltouch] config and also added custom homing to reset and stow the BLTouch, and also pull Z axis up 10mm before homing so it wouldn't hit anything.

Edit: If you want to use Marlin you should disable "probe ZMin plug uses endstop plug" and instead define the pin number where the white wire is connected (7 for me) then you would also add #define SERVO0_PIN 5 (or the number for whatever ICSP pin you connect the orange wire to) somewhere in the config but Klipper is so awesome that I'm not going back so this isn't tested.

Next up is Z offset calibration. Klipper has this on lockdown for sure — just grab a piece of paper and go to https://www.klipper3d.org/Probe_Calibrate.html and follow the instructions. Nailed Z down in two minutes.

So all my homing/leveling issues are now solved, and as a result my prints are coming off almost perfectly. I got a large one running right now, but I'll update with pictures once it's done. Also can send my Klipper config if anyone needs it.

TLDR: Install Klipper firmware and connect the BLTouch using only the ICSP header. Works like a charm!

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Since so many of you asked, I’m the guy who’s spent the last 6 years reading NOTHING but science fiction. Here’s my top 15 list. via /r/books


Since so many of you asked, I’m the guy who’s spent the last 6 years reading NOTHING but science fiction. Here’s my top 15 list.

Let me start by saying this is the list of books that **I enjoyed**. I'm not saying that #1 is better than #10, I'm simply saying I enjoyed it more. Not all of these books have crazy symbolism and story arcs and deep character/world building, some of them were just fun reads.

I have read nearly every classic science fiction book available, and a lot of contemporary and non-classics as well. Also, a disclaimer: there is no cyberpunk in here, no Stephenson or Gibson. I have tried to read several cyberpunk authors and simply didn't find them enjoyable, despite the talent that is clearly present in their writings and world building skills. Oh, and I haven't read the Foundation series, so that's why it's not on here (yet).

Apologies for not doing a top 25 (or even a top 100 that was requested), I just don't have the time.

So, without further ado, here are my top 15:

  1. The Sparrow (Mary Doria Russell) I addressed this in my previous post, I thought this book was fantastic. The first half is slow, yes, but the second half more than made up for it in my opinion. A Jesuit priest and his friends discover singing coming from a planet 4-5 light years away. The Jesuits are the first to be able to mount an expedition to this new planet, and the priest and his friends are the crew selected to lead it. The story starts with the priest, back on Earth after the trip, and all of humanity wants him dead or imprisoned. This book gave me a more intense emotional reaction than any book I've ever read. I literally shouted out loud "NO NO no no no no no no…" at one point and had to put it down for the day.
  2. Hyperion Series (Dan Simmons) – The Sparrow knocked this out of first place, yes, but I haven't read the sequel to it, so as far as series of books go, this one is at the top bar none. I preferred the first two books, but the second two were very fun reads as well. 7 people are selected all around the universe to venture into the Time Tombs in a mysterious planet with a violent and murderous monster on it known as the Shrike. That's all I can say, this story is so sprawling that anything more than that just doesn't do it justice. Just an all around unbelievable experience.
  3. The Stand (Steven King) – A virus wipes out 99% of the population, and the survivors have dreams that direct them to either Boulder, CO, where civilization is starting to rebuild (symbolically Heaven), or Las Vegas, which is more a Mad-Max-everyones-killing-each-other-no-laws-type society (symbolically Hell). Whether you consider it science fiction or not, this deserves to make the list. Loved this one. I've heard it compared to Swan Song, so I was excited to pick that up, but was ultimately disappointed. There's no argument to be made for SS being better than The Stand.
  4. I, Robot (Isaac Asimov) – I picked this book up semi-dreading the read, and just trying to work my way through the classics. I figured it was one of those classics that everyone wants to have read but no one wants to read. I was dead wrong. I knew it was going to make a statement about A.I., but I didn't know how entertaining it was going to be. Every story, every section, every word was also run to read, and the writing style kept my attention from start to finish.
  5. Dune (Frank Herbert) – No surprise here, it's an absolute classic. Not much to say about this book that hasn't already been said. If you haven't read it, do so immediately.
  6. The Forge of God (Greg Bear) – An alien lands in the United States, and the only message he can give us before he dies is "I'm sorry, I'm too late" or something to that effect. I love alien contact novels, and this was probably my favorite. Sprawling, a lot of characters, a lot of viewpoints and different situation. Huge action, a real page-turner. This isn't the most philosophical or complex book, but it is a massively fun read. And the end, damn the end was crazy. I could definitely see it being made into a movie, but it doesn't have the feel of a novel written specifically to be made into a movie.
  7. The Forever War (Joe Haldeman) – I believe this was the first military sci-fi book I read. I didn't know much about military sci-fi and was doubtful that I would like it, especially since it sounded like a parallel of the Vietnam War. Again, dead wrong. This book has a lot to say, and it says it extremely eloquently. Humanity is in an interstellar war against the Taurens, and the soldiers who visit home (because of time dilation) visit after huge periods of time, so it's a good take on where humanity will be in 500, 1000, and 10000 years from now. Again, this one was hard to put down.
  8. Not Alone (Craig Falconer) – A lot of you probably haven't heard of this book, I think it's pretty obscure. Why is it so high up on this list? Well some of my favorite novels are alien first-contact novels, and my favorite parts of those novels are the moments between a group of people finding out about the existence of ETs and whole world finding out about them. This book is that idea under a magnifying glass. A UFO enthusiast stumbles upon incontrovertible evidence that not only do aliens exist, but that humanity has had contact with them for years. And what does he do? He leaks it anonymously on Twitter, which of course leads to a melt down as the world sees the evidence. Great book, in fact I enjoyed it so much I messaged Craig Falconer on Facebook after I finished it just to tell him what a fun read I thought it was.
  9. The Sirens of Titan (Kurt Vonnegut) – An interstellar story as only Vonnegut could tell it. My favorite Vonnegut book besides maybe his Welcome to the Monkey House collection of short stories. If you've never read any Vonnegut, I'd still say it's a great place to start.
  10. Nightfall (Isaac Asimov + Robert Silverberg) – Takes place on a planet in a multiple star solar system that never experiences night. Within even 15 minutes of pure darkness, residents of the planet lose their minds or even die. Scientists on the planet discover that once every 2000 years, there is a total solar eclipse that leave the planet in complete darkness, which matches up with the fact that once every 2000 years their entire civilization completely caves in. Of course they make this discovery very close to the 2000 year mark.
  11. Old Man's War (John Scalzi) – Military sci-fi, the elderly can basically get a complete regeneration of their body, restoring them to their 20s, if they agree to fight in an interstellar war. I'm not making it sound very interesting, but it was a great read.
  12. Childhood's End (Arthur C. Clarke) – Mmmm love me some Arthur C. Clarke. A peaceful alien invasion happens, with the result being that the aliens will share a technology, etc, if humanity agrees to end all wars, ban slavery, things of that nature. Humans do, and the results humanity sees within themselves, and the changes the Overlords bring make quite the interesting novel.
  13. Spin (Robert Charles Wilson) – One night, all the stars go out. It's discovered that someone or something has put a permeable membrane all around Earth, and no one knows why. Of course our protagonist dedicates his life to figuring out what's going on. I particularly liked the ending to this book. Great read, fun.
  14. Starship Troopers (Robert Heinlein)- Another military sci fi in the vein of Old Man's War and The Forever War. I think I read all 3 of these back to back. They're sort of the heavy hitters of the military sci-fi genre, and I loved everyone one of them. Other military sci-fi I've tried to read, and they just don't do it for me.
  15. Footfall (Larry Niven and Jerry Pournelle) – Almost forgot this one, but it's about an alien invasion where the aliens aren't that far ahead of humans, technologically. And they show up to our planet expecting us to still be in the stone age, so they're surprised when they see how little time it's taken us to come so far. Extremely entertaining, and gives viewpoints from both human and alien characters. The only thing I didn't like was how the aliens supposedly looked. Like baby elephants, pretty much.

Honorable Mentions: Ringworld, Out of the Dark, I am Legend, The Three-Body Problem, War of the Worlds, Rendezvous with Rama, Calculating God, Roadside Picnic, The Puppet Masters

Yes, I'm sure I've forgotten some good ones, be it intentionally or not, I'm writing this over my lunch break.

Anyway, that's my list. Hope you enjoyed, and hopefully it gave you some recommendations for future reading. Feel free to message me for specific recommendations or anything else.

Edit: Yep forgot the Enders Game series, probably should be on there. I read it like 30 times when I was a kid and sometimes forget it’s even science fiction.

Edit2: Since I guess I'm on the front page now, here's a quick edit. I know I should read the Foundation Series, The Culture series, and Vinge's A Fire Upon the Deep. I read before bed a lot and these huge, sprawling space operas can sometimes be a lot after a long day. And I stand by decision to put Starship Troopers over Stranger in a Strange Land, but I'll allow that both Stranger and Moon is a Harsh Mistress should probably have been an honorable mention. Also for any of you that read or have read #8, Not Alone, I'd love to know what you think about it.

Edit3: All right, all right, I'll join GoodReads. My username is morbowillcrushyou, feel free to add me!

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Free Traveller Stuff via /r/traveller


Free Traveller Stuff

Classic Traveller is easy because one can grab the free rules, use a character generator online, along with the Travellermap, the wiki, and a free trader deck plan from an image search, and in less than an hour, one can be running a game.

https://www.drivethrurpg.com/product/80190/CTSTStarter-Traveller

http://www.batintheattic.com/traveller/

https://travellermap.com/

http://wiki.travellerrpg.com/Main_Page

Submitted May 18, 2019 at 06:26PM by dragoner_v2
via reddit http://j.mp/30t9QPr

Traveller Fiction – New Stories Every Wednesday! via /r/traveller


Traveller Fiction – New Stories Every Wednesday!

A brand new line of Traveller fiction has just been released, and we will be adding to it every Wednesday for the foreseeable future!

You can see the very first of the new stories right here: https://www.mongoosepublishing.com/rpgs/new-traveller/traveller-fiction.html

Explore Charted Space in a brand new way.

Each of these short stories examines a new area of Traveller, taking you from the frontline of Aslan expansion to the royal court of King Oleb, from the laser-filled void between battling warships to the murky depths of interstellar corporate espionage that preys on weak worlds. Visit your favourite planets and starports, locations that have appeared in your games over the years, and see them from a brand new perspective through the eyes of characters that will become as real as any of your own Travellers.

For the first stories, we have three real crackers…

The King is Dead by Gareth Hanrahan: The King of Drinax has died – and his son, the legendary Oleb, is missing. He must be found to ensure the continuance of the kingdom.

The Frozen Watch by Matthew Kerwin: An Imperial Marine is thawed out from low berthing during battle, and is promptly blasted out into space. How do you get down to the surface of a planet without a spacecraft?

The Dimenos Problem by MJ Dougherty: A pirate attack forces a group of Travellers to take refuge on a derelict passenger liner – but there is more than meets the eye to their hiding place.

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