Main Site Documentation

Getting smaller


#1

Running NETMF 4.3.1 :slight_smile:


#2

That’s not fair for older people who will need stronger glasses :-[


#3

If I take my hand as reference, it’s not that small :whistle:


#4

Is that the smallest NETMF board?


#5

I want to know how many clones of Justin there are?

How do you find so much time to do all of this stuff?

I’ve just spent 4 weeks alone on an Android project build and only had a few minutes here and there to build and test the 5" LCD I’ve been working on. All the other projects are sitting gathering dust and I still have about 8 weeks of Android coding to do !! :frowning:


#6

don’t feel sorry for him. He got a dream job for 2 days a week that lets him geek out on this stuff and get paid for it !


#7

It is a hardship traveling to Cambridge, and it looks like i will be spending more time there in the new financial year…I guess i just need to man up and stop complaining :whistle:


#8

Put in a good word for me!


#9

Wow, just how small can we go? Does anyone know the absolutely smallest IC that could possibly run .NETMF?


#10

Well, probably not :slight_smile: Justin may try mounting components on both sides of a 4-layer PCB… If he didn’t do that already.


#11

Physically my guess is a WLCSP49 STM32F401CEY6TR at 3.06 x 3.06mm
The one above is 7 x 7mm


#12

Who knows
:whistle:


#13

But don’t do it!!! 4-layer board are evil for hobbyist application.


#14
  1. Expensive!
  2. Impossible to make at home.

#15

Why is it impossible to make at home? Unless you are talking about etching your own boards, which imo is not a typical hobbyist.


#16

Yes, etching your own. In my country, it is more that typical.


#17

With the packages getting this small it makes no real difference between 2 or 4 layers as the drills and traces are too small to do at home anyway…

Cheap and cheerful from China :wink:


#18

Interesting! Learned something new today.


#19

DFRobot for 4 layer. Hobby size boards are great value.

To give you an idea, I got a quote for a board a few weeks back and it cost $176 for 10 boards and they were 230 x 140mm so not exactly small but more than the sizes on the web so it needed a custom quote. My usual China supplier quoted me over $800 for the same 10 boards.


#20

We have everything in house (in the basement somewhere) to etch pcb’s but still we use

http://www.eurocircuits.com/

And if you don’t need a rush order (like I really NEED this in 2 day’s and want to pay an extra 2500 € for 10 pieces (yes this is possible over there, with courier service etc…))

But if you have 2-3 week time these prices are really good.