Iron Pumpkin(s) and other smaller vegetable animals, Tips 'n' Tricks thread

[Oneminde]

So it IS kinda like swearing in the Church .. LOL

I have some math and equations that look sane, however, if I where to post that and it is accurate, then the whole world will know how to produce an AVC and that is bad for business as they say..

 

[Zen Mod]

I'm notoriously bad with memory ........ so maybe it's just me, that I can't remember any of your Grand Projects actually taken from extended chat point

What is your right, to actually implies anything at anyone?

 

[Oneminde]

I know and I feel bad about that. Working on it

 

[Zen Mod]

In last few years I spent too much lines of text on you

I can't see even one line of that transformed in anything actually shown on Forum, just super long line of boasting and plans

Feel free to not ask me, at least directly, anything more

 

[timkrone]

and now, after few dayz of acclimatizing ears and brain, what you can tell about your level of foot-tapping?

care to reveal/elaborate about ZM's major ookup in soldering job, Turtle module?

I'm practically Fred Astaire with the foot tapping.

I wasn't going to talk about that other bit, but I feel kinda backed into a corner. @Zen Mod didn't know this, but my biggest fear in this project was unsoldering the turtle. My soldering skills are weak, but my unsoldering skills are way worse. When I initially fired up the Pumpkin, everything worked perfectly... except that at volume 4 I got a buzz in the left speaker. We engaged in some debugging, but eventually the word came down, "You've gotta remove the turtle and check things out." I broke out in a sweat. Fortunately @KevinHeem gave me a few tips when he'd visited a few days beforehand, and I removed the turtle without doing any damage.

Lo and behold, I found one end of a diode unsoldered. It was a fix even I could (and did) undertake. Problem solved.

I built this thing to kinda scratch an itch, but I've come away with a deep sense of how much Zen Mod obsessed over its design. The board layout is thoughtful and pretty incredible. The turtle is amazing. I wonder about the number of hours invested in the design and execution of that thing. The logic system works really well. The included remote is a lovely CNC item, totally in keeping with the first-rate aspect of the whole package. Used Apple remote? Nope.

Bottom line: very, very satisfied.

 

[Zen Mod]

Lo and behold, I found one end of a diode unsoldered.

to clarify - that's "just" overlay symbol of diode, in parallel with relay coil ....... diode is not present while relay (coil) certainly is ....... even with one pin not soldered

no better way than to have them (diodes) piggybacked at relay coil pins on bottom side, but that's option solely for arrangement with rotary switches commanding Turtle and input select

frankly, using sturdy rotary switches and relays having eeeny current and minuscule inductance, most likely protection diodes aren't really necessary

now, when everything commanded with logic module, no need for those diodes at all, simply because they're already implemented in darlington array chips, situated on logic/TFT pcb

all in all, Blind ZM didn't soldered one relay coil pin, and damn thingie passed all electrical tests

while flying to US of A, silly pin reseated, lost contact in pad via, ZM's negligence revealed



how's that saying ......... (literally translated from Serbian to ZMEngrish) ...... Even the Sword does not cut the Penitent's head

 

[timkrone]

That's what I meant to say.

 

[Zen Mod]

anyhow, what counts (in the end) is ............

 

[KevinHeem]

Interesting...I'm still subscribed.

 

[Zen Mod]

Interesting

to reply regarding #524

if you're still even partially puzzled, read again what I wrote and just make basic search, then make your own conclusions

 

[KevinHeem]

if you're still even partially puzzled…

Not really, mostly just like hearing myself talk (type).

 

[Monk55]

Most excellent job Timkrone!
“Solder is for weaklingnesses”..

 

[Reima]

I am ready to connect the turtle to the motherboard, so here is my dumb question of the day.
On the MB there are connections for AVCR-, AVCR+ AND AVCGNDR but on the Turtle there is B_IN1, A_IN AND GND_A. I assume that AVCR- goes to B_IN1, AVCR+ to A_IN and AVCGNDR to GND_A.
TIA

 

[timkrone]

Howdy,

Looks perfect. In super general terms, the wires don't cross.

Have fun!

 

[Zen Mod]

3 short wires (bare, leftovers of resistor legs or diodes or thin wire) goes straight vertical (no twisting) from MoBo pads framed as "TO LOWER TURTLE LEVEL", to lower deck of Iron Turtle [B_IN1, A_IN, GND_A]

solder them from MoBo bottom and in between two decks of AVC


3 long wires (insulated thin solid core) goes straight (no twisting) from MoBo pads framed as "TO UPPER TURTLE LEVEL", routed through rectangular hole in lower Turtle deck, then slightly leaned to upper deck of Iron Turtle [B_IN1, A_IN, GND_A]

solder them from MoBo bottom and from top of AVC


same logic applies for output sets of wires

thin leftover wires from pads [A_OUT, B_OUT, GNDOUT] from lower deck goes short way straight vertical to [ALOUT, BLOUT, GNDLOUT] on MoBo

long insulated thin solid core wires from pads [A_OUT, B_OUT, GNDOUT] from upper deck goes slightly leaned but straight-no twisting to [AROUT, BROUT, GNDROUT] on MoBo

I know I have several pictures specifically saved for that, but in this moment easier to write than "systematic" search in my pc - can't remember how I called them

 

[Reima]

Thanks ZM.