TOTAL NEWB NEED PLEASE HELP PROFESSIONALS WANTED

10 Jul 2016

Im trying to connect the NTSC/PAL TFT 3.5" Display to my Pi 3 buti broke off one of the connectors that i was gonna connect it to which i beleive is ground. Is there another spot i can connect it to (ground and 5v).

Also are these correct?

Also is there a diagram that shows all the purposes of all the back connectors? because all i find is the gpio pin out diagram but i dont need that.

I would appreciate it so much if someone could help me.

mayermakes over 3 years ago

Hi
You can take ground from wherever is it present, for example the GPIO header.

here is a list of the testpoints for the pi3B /B+

PP1 VCC +5V (from micro USB receptacle)
PP2 VCC +5V (from micro USB receptacle)
PP3 GND
PP4 GND
PP5 GND
PP6 GND
PP7 5V after polyfuse
PP8 3V3
PP9 1V8
PP10 Power LED
PP11
PP12
PP13 Status ACT LED
PP20 H5V (5V at HDMI connector)
PP21 RUN (reset signal)
PP22 Ethernet Activity LED
PP23 Ethernet Link
PP24 Composite Video
PP25 L Audio
PP26 R Audio
PP27 USB VCC
PP28
PP35 VCC +5V
PP36 USB D-
PP39
PP40
PP41 USB D+
PP42 USB D-
PP43 USB D+
PP44 USB D-
PP45 USB D+
PP46 USB D-
PP47 USB D+
PP48 GND
PP49 GND
PP50 GND
PP51 GND
PP52 Ethernet TX+ ?
PP53 Ethernet 3v3 ?
PP54 Ethernet RX+ ?
PP55 Ethernet TX- ?
PP56 Ethernet RX- ?
PP57 Ethernet 3v3 ?
PP58
PP59
PP60
this thread has some more information and its also where I got the list: https://raspberrypi.stackexchange.com/questions/91901/what-are-the-functions-of-the-test-pads-on-the-pi-3b-3b
With the broken connector there is a possibility that some traces may be shorted, so check them with a multimeter before repowering your Pi.
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