3d printing: 'ramps' board for stm32 'development boards'

Anything not related to STM32
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ag123
Posts: 1655
Joined: Thu Dec 19, 2019 5:30 am
Answers: 24

3d printing: 'ramps' board for stm32 'development boards'

Post by ag123 »

Something got my attention about '3d printing boards'. I've always wanted a
Ramps board that can cater to stm32 and other ARM based 3.3v 'development boards'.

I did not find it earlier until ...

I stumbled into this board
https://github.com/bigtreetech/BIGTREETECH-GTR-V1.0
https://github.com/bigtreetech/BIGTREET ... .0/picture
https://biqu.equipment/products/bigtree ... otherboard

it is the 'M5' extension board and not the GTR-V1 board that I'm interested in

The good thing about that 'M5' board is that the microcontroller is not on the board.
So you can literally take any other (stm32 or ARM etc) development boards and connect them to this M5 'extension board'
Use 'dupont' wires to jumper wires from your 'development board' to the 'M5 extension board'. The M5 board is literally a 'Ramps' board substitute, in particular i'd think suitable for stm32 mcus (and maybe many more ARM (e.g. Rpi pico), and other mcus).

cross posted in mastodon
https://3dp.chat/@ag_3dp/109477116523330753
dannyf
Posts: 447
Joined: Sat Jul 04, 2020 7:46 pm

Re: 3d printing: 'ramps' board for stm32 'development boards'

Post by dannyf »

isn't that just a call for a common form factor?

to me, a device with assignable pins (PIC24/32 for example with PPS) would be a great device for such a purpose.

short of that, pick a form factor (Arduino? or one of those used by Nucleos) and develop extension boards would work.

or use jump wires.
ag123
Posts: 1655
Joined: Thu Dec 19, 2019 5:30 am
Answers: 24

Re: 3d printing: 'ramps' board for stm32 'development boards'

Post by ag123 »

yup, i'm basically thinking of using jump wires. even though they aren't necessarily very reliable.
i think there are 'dupont connectors' that are metal stamped from copper, those are likely the better and more expensive connectors.
edit: it turns out those parts are actually called "crimp terminals"
https://octopart.com/search?q=Crimp+Terminal

for the 'cheap' online 'flea market' 'dupont connectors' my usual way is crimp and try it, if it fails make another wire and try again.
https://www.aliexpress.com/wholesale?ca ... +connector
the rather low cost I'd guess is due to them being metal stamped in large quantities

'dupont' wires has pretty much become an 'alternative' to patching wires and the (mcu) board on the breadboard. it works pretty well and often it is possible to do without the breadboard ;)

wires alleviate the connotation of 'shields', using wires one can jumper any pin to any other pin on the headers in nearly any order. that is simply impossible for rigid 'shields'.

edit:
the housing 'dupont shells' tend to be tall, a trick i tend to do is to use a simple heat shrink to insulate the connector and adjacent wire, works pretty well and saves several mm (like 7-8mm) of height.
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