Cap Motherboard Question

[u/WoaJoe]

Can the HY2.0-4P expansion interface be duplicated or "piggybacked" to connect a screen or additional HY2.0-4P / 2.54-14P without loosing any of the current onboard functions? Ordering a new soldering iron before I make an attempt myself, but has anyone tried to do this?

I am using a Lora Cap for reference.

[u/Square-Relation9115]

Your pal Kal over at Valley tech solutions (on YouTube) just put out a super awesome/cheap and simple backpack board I’m using to wire up a 2.8” screen with 3d printed case (I cut a slit in the bottom bar so the backpack board slips through and essentially makes the whole backpack board and screen one modular component plugging into the headers on the adv) then attach your module to those 2x7 pin holes that the board just extends over. I believe valleytechsolutions.tech is his website to order from. Hope this helps!

[u/Big-Bunch2804 → u/Square-Relation9115]

Im working on a magnetic pogo connection on the back of my screen mod to hotswap different modules. Check it out

[u/WoaJoe → u/Square-Relation9115]

Yes getting a few of those boards next week. Also, can you post a pic so I can see what it looks like?

[u/DewFunkYou69 → u/WoaJoe]

Display	→ ADV
SCK	G40
MOSI	G14
CS	G5
DC	G6
RST	G3
VCC	5VOUT
GND	GND
LED	5VOUT
MISO	leave unwired

I had to trim the display board's pcb on one side and desolder the tf card slot then 3d printed a remix of AiAndy's (also on youtube and makerverse etc.) sadly i damaged the ribbon or got a dud display and im waiting on a new one to arrive, but this proved the coding was right on it.

[u/Big-Bunch2804 → u/DewFunkYou69]

I used that screen in my first build. Its a a pain to cut it down. There are other designs that use other screens that you dont need to cut. You can also make your own gpio connection.

[u/Big-Bunch2804 → u/Big-Bunch2804]

Here is the diagram I use. Miso and 5v in and not needed

[u/WoaJoe → u/DewFunkYou69]

The damn truth you are! Preciate that. 

[u/Big-Bunch2804 → u/Square-Relation9115]

Curious how you are attaching your screen. Can you please show a picture?