Reddit reviews kuman 3.5 Inch Touch Screen TFT LCD Display SPI with Touch Pen for Raspberry Pi 3B+/ Pi 2B, Pi Zero W, Pi A/B
We found 1 Reddit comments about kuman 3.5 Inch Touch Screen TFT LCD Display SPI with Touch Pen for Raspberry Pi 3B+/ Pi 2B, Pi Zero W, Pi A/B. Here are the top ones, ranked by their Reddit score.
The 3.5 in Touch Screen can support two screens simultaneous display(the Raspberry Pi can be connected to this screen and another HDMI screen at the same time).This 3.5 inch resistive Touch Screen can be directly inserted into any version of the Raspberry Pi (Raspberry Pi zero, zero w, a, A+, b, B+, 2B, 3B, 3B+).Raspberry Pi is not included.This Touch Screen Support for Raspbian/Ubuntu/Kali/RETROPIE systems, We provide drivers and image freely. (Please scan the QR code on the instruction to download it)The Raspberry Pi screen can work with fbcp software driver, you can adjust the resolution by the software (The RPI screen original resolution is 320×480).The Raspberry Pi Display support 125MHz SPI signal input, It can display stable without Flicker. When it work with Raspberry Pi, the refresh rate is about 50fps, it is enough to play the video and game.
Ok!
So it's a late 2018 (December) Ender 3 Pro. I got it from Mech Solutions. They have been super helpful with some warranty stuff. (Magnetic bed delaminated and heat break/throat tube was broken.) https://www.mechestore.com/collections/ender-3-pro
Galactic Empire gears here:
https://www.thingiverse.com/thing:3422334 (I remixed this one!)
https://www.thingiverse.com/thing:3005278
The braided cable stuff is from Amazon, here: https://www.amazon.ca/gp/product/B071WF5NTN/ref=ppx_yo_dt_b_asin_title_o01__o00_s00?ie=UTF8&psc=1
I bought three sizes, 1/4", 1/2", and 3/4". I hated the Pi camera cable, luckily it fits perfectly in the 1/2" stuff. I found uses for all three sizes in different locations. The 1/4" looks cool on the bowden tube. I used heat shrink (or electrical tape) at the ends.
Hotend cooler is Hero Me with a velocity stack (stack purely for my own entertainment)
Hero Me: https://www.thingiverse.com/thing:3182917 - I used the stock 4010 blower version in the end. I was going to do the dual 5015 mod but the two Amazon fans I got were both defective.
Fan is a Noctua 4020 - from here: https://www.amazon.ca/gp/product/B071W93333/ref=ppx_yo_dt_b_asin_title_o07__o00_s02?ie=UTF8&psc=1
** tech note - I added a 12v system running in parallel with the OEM 24v Ender system - more below
Velocity stack:
https://www.thingiverse.com/thing:2211780
Someone spotted it, on the left I have a Raspberry Pi 3B+ running OctoPi (Octoprint):
https://www.amazon.ca/gp/product/B07BD3WHCK/ref=ppx_yo_dt_b_asin_title_o03__o00_s00?ie=UTF8&psc=1
and a 3.5" touchscreen TFT LCD:
https://www.amazon.ca/gp/product/B07KLDKM5D/ref=ppx_yo_dt_b_asin_title_o06__o00_s00?ie=UTF8&psc=1
and a Pi compatible camera:
https://www.amazon.ca/gp/product/B0759GYR51/ref=ppx_yo_dt_b_asin_title_o03__o00_s00?ie=UTF8&psc=1
with longer cables:
https://www.amazon.ca/gp/product/B07DNYM8KC/ref=ppx_yo_dt_b_asin_title_o02__o00_s01?ie=UTF8&psc=1
The camera needed a mount:
https://www.thingiverse.com/thing:2886101
and an off-brand sleeve:
https://www.thingiverse.com/thing:2994762
The Pi needed a mount too, and I found one I love that just happened to fit the screen I bought:
https://www.thingiverse.com/thing:2530258
** user note - this thing is massive, and tricky to print. Worth it, though.
OH. THIS IS A MUST:
https://www.thingiverse.com/thing:2943218 xD
All metal extruder, conveniently in red, from here: https://www.amazon.ca/gp/product/B07JVJWC5B/ref=ppx_yo_dt_b_asin_title_o04__o00_s00?ie=UTF8&psc=1
** tech note: if nothing else, do this upgrade. This, and the one just above it. Mine was under extruding, and I poured hours into trying to calibrate/test/bla bla bla... it ended up being a broken heat break and crappy plastic extruder.
Filament guide (top rail)
https://www.thingiverse.com/thing:3003807
At extruder:
https://www.thingiverse.com/thing:3303562
Z-Axis bar cable management:
https://www.thingiverse.com/thing:2761965
** user note: this is one of my favorites!!!!! I covered it in LEDs, white for the bed, and red for the wall/bowden tube!
Ok, so, something that made getting good fans difficult is the Ender 3 uses 24v fans (except the power suppy, it uses a 12v fan. Bonus.)
To get some 12v power, I used a buck converter to step 24v down to 12v from here:
https://www.amazon.ca/gp/product/B01FQH4M82/ref=ppx_yo_dt_b_asin_title_o07__o00_s01?ie=UTF8&psc=1
and basically I run all the fun stuff off it.
JST and XT60 connectors are all from www.hobbyking.com. Same with 22AWG three wire servo wire, super handy. I already had this stuff kicking around, but hobbyking is good if you need this stuff.
The PSU has some open ports, I added another XT60 cable with 24v service. I made it the same as the OEM, and they are backwards compatible and nothing will fry. One of them goes to my buck converter, the other to the Ender main board.
** tech note: I used a 3.5A BEC from hobbyking to power the Pi, off the 12v side of the buck converter. I ended up cutting the power supply cable that came with the Pi (and added JST connectors to the whole thing so I could reuse it one day.) The BEC steps the voltage down to 5.1v from 12v. 3.5A has been plenty. I think it might use .8A with my giant RGB keyboard plugged into it.
This is super worth it, a must do. https://photos.app.goo.gl/AEXNqvTXE5ZZhnhi8
Oh, the nice little platform the buck converter and Pi cooling fan is sitting on is this thing:
https://www.thingiverse.com/thing:2539545
more below: (above?)