Freezing not lipo

Currently, i have an arduino nano that is connected to an Adafruit SSD1306 I2C 128x64 OLED display. I have an AMS1117 3.3V regulator connected to VIN which powers the display with 3.3V and GND goes to arduino GND. When I plug this into my computer and run this sketch

#include  #include  // Display #define OLED_WIDTH_PX 128 #define OLED_HEIGHT_PX 64 #define OLED_I2C_ADDR 0x3C Adafruit_SSD1306 oled(OLED_WIDTH_PX, OLED_HEIGHT_PX, &Wire); void setup() { pinMode(LED_BUILTIN, OUTPUT); for (int i = 0; i < 10; i++) { digitalWrite(LED_BUILTIN, HIGH); delay(100); digitalWrite(LED_BUILTIN, LOW); delay(100); } // THIS LINE HERE oled.begin(SSD1306_SWITCHCAPVCC, OLED_I2C_ADDR); } void loop() { // put your main code here, to run repeatedly: digitalWrite(LED_BUILTIN, HIGH); delay(500); digitalWrite(LED_BUILTIN, LOW); delay(500); } 

It does what id expect, which is blink 10 times quickly and then blink slowly indefinitely
However, when I run the exact same sketch except now powering the nano with a 2S 30C 750mah Lipo going into VIN and GND the led blinks quickly 10 times but then nothing else happens. I have confirmed that the line oled.begin(SSD1306_SWITCHCAPVCC, OLED_I2C_ADDR) is making the program freeze, as when I remove that line of code and then power from circuit from the battery it blinks as expected.
The code is not crashing and then restarting, it is just freezing. I have probed all points when connected to battery power and the voltages for the display are all correct, however the 5V pin and the output of the AMS1117 5V regulator on the nano are both measuring the same as VIN, and not 5V. Im not sure if this is affecting anything as the sketch does work when the line oled.begin IS NOT present. I am using an elegoo brand nano.
UPD: Startup current of the oled display (From the oled.begin line) was measured at 1.6ma
UPD: Image of circuit in question (there are voltage smoothing capacitors on the AMS, but I didn't draw them)
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https://preview.redd.it/5uleei94ce1c1.png?width=1567&format=png&auto=webp&s=fc2c05aa19eedc4a7b035208d4bad19bb9e3f044
UPD SOLVED!!
the board was the problem. as mentioned above the 5V of the board I was using was not measuring 5, I got a new board which did measure 5V on the 5V pin and that board worked properly. That would also explain why it only worked on PC power as PC power is 5V so the short across the regulator didn't affect anything.

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https://preview.redd.it/yhkxhpw0x69b1.png?width=2836&format=png&auto=webp&s=9d8e84f8d2304b151ddf534593deddda4be8b821
I hope the picture works, please tell me anything you notice on the xray whether you read the text or not I'm interested! :> My life story is below, basically venting.
-April 2023
Recently went to an amazing surgeon after ages of trying to get to one, I'm in a free healthcare nordic country and the system failed me and continues to. The only reason I got to meet this surgeon was because I contacted another surgeon who gave me her personal email, she sent me a time for an appointment in a city 4.5h away but I'm just happy I finally get to see a surgeon. I tell her my problems:
I've got moderate pain on a daily basis, severe pain when I've angered the jaw gods, speaking too much, eating not soft foods, biting my teeth in my sleep(more on that later).
I find it difficult to speak because my upper teeth and gums feel too long and my lip can't form M,B,P sounds without great effort on my part, B becomes V, P becomes F. This makes me even more socially anxious and I don't like speaking.
My front teeth are constantly going dry and any dark food/liquid kind of gets stuck halfway down my front teeth where my lips end, beautiful.
It gets cold in my country, much past freezing, breathing in the winter hurts my teeth like hell, breathing through the nose is not great.
I have to keep doing a movement towards the left with my jaw which makes a noise in my left ear, but eases my uncomfort. I do this probably every 30 minutes otherwise my left side just doesn't feel good, it's subconscious.
My tongue doesn't sit well in my mouth, it feels like the palate part behind my upper teeth is way too low and squishes my tongue. I either have to hold it back or let it press against my upper teeth, which I've heard is bad.
My teeth are uncomfortable even though I've had braces twice.
She responds with the most angelic voice that she believes what I am saying and that I've come to the right place and the right person. I almost cry at this because I've spent my life being told everyone's tongue is uncomfortable, some people just have short lips(I don't its my teeth), just practice speaking better and that I am NOT in pain.
She finishes the examination with lots of poking and prodding which hurt and she lets me know I will be needing new joints, she can't say exactly when without xrays which she wants me to take closer to home, she tells me I am likely to get a jaw surgery on the free healthcare because of my other issues but she cannot promise.
She says she will send me to a jaw place closer to home to make it easier for me, and my province is more lenient with what falls under free healthcare than her province. She says I can come back to her but it will make it a little more difficult. Okay I'll see the closer people for xray and further exam.
-May 2023
I see surgeon #2, I get this xray taken, only the front view I got denied for the ceph. #2 tells me my left joint is in bad shape, my right is better. She comment on my antegonial notch and tells me I have this as a proof of my jaw issues. She tells me my jaw joints should have more "cushioning" in the jaw socket for my age, and my joints look like they belong to someone much older. She listen as I list my same problems, she prod and poke, measure my lip length from nose base to lip end, my tooth show etc, I can't remember all. She mumbles a bit to herself and tells me when a measurement is too little or too much.
She tries to put a lip spreader device into my face, does not fit, need the smallest size and we still struggle to get it to stay. My teeth are not good, I am confused I just had braces and the dentist was very happy with them. I have a gap between my right canine to my left first or second molar, the teeth don't touch. I told her I knew this my dentist said they would close on their own, braces off about 1 year prior. She told me that was a lie and I've been deceived. My lower incisors are pushing on the upper ones, not good. I also have an unbalanced bite now.
Then she sits down with a serious face. She basically tells me not to worry about my teeth, lips, pain, speaking issues and the reason for this is BECAUSE I LOOK CUTE. ??? I am thoroughly confused. I try to ask what she means about this and she says "I used to have a short upper lip too but now I am 50 and look it's normal length now!". I become more confused, what does this have to do with my obvious issues? Her response is something like "Oh I see patients that have actual problems like motorbike injuries and you are so lucky you are not them" and " Well in your quest to get the perfect face it's likely you will end up more unhappy, like with your dentist and braces!" I realise I've lost her and we are back to people telling me I have no issues. Sigh. I barely even mentioned my looks, since it's such a small worry at the moment.
She also dismisses when I tell her how I had a locked up jaw for several weeks as a younger teen and the orthodontists I saw didn't do anything to help, didn't send me to a jaw specialist, nothing. She doesn't believe it happened or that I've had jaw issues my entire life. Because "The dentists would have sent you to a surgeon" so "You must have not had very big issues". I had braces on my upper front 6 teeth only, something she also doesn't believe.
Then she asks me to come to her office to pay, and I get more confused because this isn't how you pay for healthcare, it comes as a slip in the mail. That's when I find out that this surgeon is a private one, superb! I pay the expensive fee from my meagre savings after paying for braces. Okay, nice. I cry on the way home. I did NOT know I was being remitted to a private surgeon.
- Present time
Now currently I am just angry. I reached out to the dentist about my current issues and the ones he caused me with unsuitable treatment. I BEGGED him to let me have xrays on my jaws because of my pain but of course "You don't have any issues the radiation risk is not worth it". He successfully gaslights me into thinking I actually don't have any issues and this is normal all I need is a slight adjustment to my forward pointing teeth and my lip issue will be solved. Well that's good news I think!
Shortly after I started my braces I start to get intense pain in my jaw, I tell him this on my first adjustment visit. "Oh it's because you are biting your teeth at night". Hm that's really odd I tell him, never had this issue in my life before, but okay my teeth are moving it'll be okay once the teeth are in good a position(hah!).
I keep complaining about this pain every visit, I had the braces 1 year with adjustments about every 1.5 months. He says it's a me problem. I ask EVERY visit if he can send me to get xrays because of my pain, he says "no you stupid bitch just stop eating hard foods" He didn't say that but the message was clear, I am causing this, I bite my teeth, I eat hard foods(I don't it hurt too much for that), I don't do the jaw exercises he gave me (I did), I am just a sensitive bitch and gotta man up.
Before the last visit where they are removed I bring up the gap between my teeth between right canine to whatever molar, I send him an email with a picture. It will be fine he says, it will close on it's own he says. Okay fair. They get removed. My issues persist about 1 year after which is when I reach out to the surgeon on her email. 7k euro for more pain.
- 2022
Between this time I had a nosejob, chin implant and chin lipo. Because I still thought the dentist was right, so I just ended up doing what I thought was best. I had just enough money to afford this as I was saving for a jaw surgery :) The surgeon I had for this was great, but even he commented on my overbite and my tooth gap. I told him confidently "My dentist said the gap will close on it's own, and I just had braces to correct my bite and jaws". He looks a little bewildered but he accepts this answer. I am so angry at myself that at the time I didn't think about this enough, but what are you to do when a professional tells you "facts"?
My nose still doesn't breathe right and is a bit uneven, my chin implant has messed a bit with my nerves and I got a spot of no feeling. My chin lipo went great and did a huuuge difference. I might have to have a 2nd nosejob, unsure yet.
- Back to present
The dentist I went to has now gone into pension, I've tried to contact the person who took over the practice which changed name. I got an answer to "is this the place I had this done?" He responds the next day"Yes, how is it going?". I tell him honestly the original dentist disregarded my issues and pain and refused me any xray which would have clearly proven I have big problems, and that I feel I've received the wrong treatment and that I'm very unhappy having spent so much money on more problems. After almost 30 days no response :)
I have severe anxiety issues and arguing with authority figures is so hard for me. I tried so many things to alleviate my problems and all I got was more issues and less money.
I spent every dentist visit from 13 years old up to the braces in 2021 complaining about all my problems, and no one did anything, no one sent me to a specialist. All they did was tell me I'm exaggerating and learn to live with my problems like everyone else. Free healthcare covers dental care for children and youths, I passed this time by weeks, before I understood it's a problem that can be solved and I don't have to live like this.
I'm so angry at the system that were supposed to catch cases like mine and provide care at a young age, most in my family had some sort of dental care, palate expanders for one.
I'm angry at my family for listening to me telling them I'm in pain, but accepting the dentists answers of basically "she's lying, she has such minor issues". If they had pushed for me to get help I most likely would have, a simple call to a specialist or even just firmly backing me up at an appointment and agreeing with me. Telling the people that everyone in the family has pretty much the same problems, overbites and jaw pain. Why didn't anyone do anything?
I've messaged the good lady again but have not heard back for a while, I'm asking if she can either send me to someone else within the free healthcare system or if I can come back to her. Free healthcare isn't even free, still has to pay for every appointment and phone appointments and this shit adds up, I am not rich. Also her and #2 are apparently good friends so I'm not sure how that will work out when #2 tells her I'm exaggerating everything and so on.
I don't know what I'm supposed to do now. I keep going from hopeless to very angry and to feeling invisible and uncared for.
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