@nca78 said in Best options for a low current display for a battery operated node?:
By the way I realized there are others drivers from Microchip with even lower power consumption, like PCF8551: at 3.3V <0.6uA supply current for the IC and down to 2.5uA supply for the LCD, it would mean an always on LCD below 5uA. Added to cart but it will take time before I place order and even longer before I have a PCB to test it...
Sounds like a winner!
@nca78 said in SMD Reflow Oven / PID:
remotely following the reflow profile for this solder type
To approximate the reflow profile, did you manually adjust the temperatures by hand while looking at a clock or something?
@toyman What about the syringes? Do you have a link for those as well?
I suppose a syringe gun might be handy, if no stepper motor operated one is available:
https://www.aliexpress.com/item/New-Arrival-Manual-Syringe-Gun-Dispenser-10cc-Glue-Dispensing-Gun/32555533165.html?spm=2114.search0604.8.44.58b37fcbKvXPej&priceBeautifyAB=0
@gohan What could possibly not go wrong? 
@gohan Oh, pish posh. It's made in China and sold for peanuts! What could possibly go wrong?
Thought I'd share a couple cool things I've learned recently.
One is that meshmixer offers treelike supports, which is pretty cool, and it's free:
You can import your model and just add the supports without using the rest of meshmixer, if that's all you want. That's how I plan to use it.
The other is that if you want to print faster, but with good print quality, you should definitely look into linear advance.
How to use Linear Advance in Marlin – 10:58
— Teaching Tech
Anyone else learned anything cool lately?
@toyman said in SMD Reflow Oven / PID:
Mechanic XG paste
@toyman said in nRF5 action!:
@neverdie said in nRF5 action!:
I didn't have good enough technique dispensing manually directly from a solder paste syringe,
what did you have issues with?
It was very hard to extrude it, so I always seemed to either underextrude or overstrude. I found it very hard to get the right amount exactly where it should go by just manually pressing the plunger on the solder paste syringe that the material came in.
Maybe this, or one like it? There are a ton of them on ebay.
https://www.ebay.com/itm/AC-110-240-Digital-PID-Temperature-controller-40A-SSR-K-thermocouple-Sensor/371134791350?epid=918051785&hash=item56695b7eb6:g:yRAAAOSwVFlUBBap
Ah, but of course, I don't suppose they would follow a temperature profile....
There's starting to be some interesting solder paste dispensors on thingiverse, such as:
https://www.thingiverse.com/thing:384680
or
https://www.thingiverse.com/thing:2123259
I'd probably need a tool like one of those. I didn't have good enough technique dispensing manually directly from a solder paste syringe, and I never really warmed up to the idea of using stencils. Well, not yet anyway. Using non-leaded solder paste would make the whole thing more appealing. Since nobody seemed to be doing it, I just assumed it was too hard to get it to work...until you came along!
