I just got a new Arduino Giga R1 and the Arduino Giga Display and was trying out some very basic sketches (e.g. a bouncing ball). I reset the board and lost all the power to the board. It was plugged into a USB port (not external power) and I verified the USB port is working (and the cable).
I removed the Display and still nothing.
Then I measured voltages on the Giga R1. The 5V (from the USB) is good (~5.04V), but the 3.3V is around 0.5V. I suspect the 3.3V regulator is dead. Obviously I'll be contacting Arduino and filing a warranty claim as this was definitely NOT abuse or improper usage. I've had the thing for 3 days!
My question to the forum is this...
Should I be worried that the real culprit is the Giga Display? Could the display have somehow shorted the 3.3V supply and therefore killed the Giga R1 board? The Display is powered completely from the 3.3V supply from the Giga R1, so the concern seems valid.
I've have another Giga R1 which works like a champ which does NOT have a Giga Display. If I get another Giga R1 board and connect the Giga Display is it going to kill that one too?
How can I test the Giga Display to know if its got a problem without destroying another Giga R1?
From the schematic diagram ( SCHEMATICS IN .PDF), you can see that the 5V output from DC converter "U7 AP63200WU-7" supply the regulator MP2322GQH whose output supply 3.3V to board and peripheral. So if you have 5V output, yet no 3.3V, then something (like wrong connection of the display or external circuit/sensor) damaged the regulator or sometimes component failure.
Note that connecting the display to the board as recommended below will never damage anything.
Note: Before testing with a new Giga R1, make sure that you test the Giga Display's pins 3.3V, 5V, Vin with GND for short circuit. If there is a short circuit, do not connect the display to any other Giga board.
Just the same happened with a out of the box Giga R1 and Giga Shield display from "A....!" After connecting display shield as shown in manual and plugging it to USB-C plug...!
While turning around and set down, i noticed a bad smell, smoke and a weird light shining through the visual gaps between shield and board. As immediate as possible i pulled the usb-c plug. But as knowing audience. I don´t know if the photo i took afterwards is sufficient to locate any cause of damage caused by missuse.
At first thks god my macbook pro is alive.
I am just a newbie to arduino and the board and shield was a birthday present that went to a absolut nightmare. For my poor impression the small resistor in the middle of the second photo looks outlined from its vertical allignment and the right hand area between IC "100", upside down in the magnification and IC "T23x??", flares like to much flux soldering components. The 5 volts power source is a Macbook Pro "USB-C Digital AV Multiport Adapter"
"ID: 0x05ac (Apple Inc.)".
In summary a few foolish questions...!
Does the photo show damage of a short circuit?
Is this an known issue?
Is it possible to missmount the display shield?
Is there an chance for refund by seller or factory replacement?
Hopefully someone is in the mood to patiently changing my mind arduino is a tool for students becoming needs and development i should keep my hands off...!
Best regards and a pleasant start for the upcoming week.
Ede
"pls keep in mind english is not my native language...!
Did you plug the GIGA Display Shield into the holes on the bottom of the GIGA R1 WiFi board, as shown in the image @Dozie shared above?:
(note that this picture is taken from the top of the GIGA R1 WiFi board, with the bottom of the GIGA Display Shield shown behind the GIGA R1 WiFi)
Or did you instead plug it in from the top of the GIGA R1 WiFi board?
The reason I ask is because the damaged components shown in the picture you shared are located on the top of the board. Thus, your description of the light from their incandescent death shining through the gaps between the two boards makes it sound like the shield was plugged into the top of the GIGA R1 WiFi.
Yes. It is possible to plug the shield in from the top of the GIGA R1 WiFi board instead of from the correct position on the bottom of the board. If you do that, the electrical connections between the two are mirrored from the correct connections.
As a quick FYI, since people are still replying to this thread...I root-caused the failure to the 3.3V Down-Converter from the 5V supply on the Giga board. I had plugged it in correctly, and I had used it for a short while, when it just would not power-up again. No visible damage in my case. No smoke, just stopped working.
I found a hack for this. I got a 5V to 3.3V down converter module and plugged the input to the converter to the 5V connector pin on the Giga board and the output to the 3.3V connector pin on the Giga board (and the ground obviously). It works, no problem. So, this pretty much proves it is the 5V to 3.3V converter on the Giga board, but I have no idea why it failed.
I've ordered other ones, and never seen this problem again.
Today i got replacement for shield and board without being charged again. Before the next one gets toasted i will apply a used atc-psu for jitter free voltage source.
I agree...! Headless and with brute force its possible to bent the shield from the top site some how. May be the one i roasted was a near dead experience out of the box.
For me everything went fine at the end. Thks for all youtr replies.
Yay! Thanks for taking the time to post an update.
It actually doesn't require any force or bending. The shield will plug right in from the top of the GIGA R1 WiFi, just the same as from the correct position from the bottom of the board.
Don´t want to disagree. But there a small rubber brackets on the top site connectors, may be
just to prevent miss matched mounting. But the high rate of failures google reports about the giga board make me believe that you are absolutely correct.
Anyway the board has to survive 5 volt current as long as usb port is used for uploading. Maybe for this purpose there is a workaround to find by searching this forum.
Their purpose is to provide a surface for the vacuum pickup mechanism of the pick-and-place machine used during the manufacture of the boards. They can be easily removed from the headers.
It is great if they end up preventing some users from incorrectly plugging in a GIGA Display Shield, but they are not present for that purpose.
