Tips on Reliable Flight Data for Hardware Flight Tracker?

I know this question has been asked a bunch in various subreddits, but I wanted to see if folks had tips based on what I'm building.

Basically, I want to build a desktop LCD screen that shows when a flight flies over you within a certain radius and then shows you basic information like the plane, it's route, etc. I'm an avgeek myself and plane spot at SFO a few hours a week.

When I talked to friends about it, we had lots of ideas like creating alerts for squawk codes, plane types, etc.

Disclaimer: This is a product I intend to sell.

As a bunch of people have already complained, getting this data is actually quite expensive, and I'm really trying to avoid a subscription in the product beyond the hardware.

Right now, the best I have is:

- Use ADSB.lol 's free API to get callsigns within a given radius.

- Call FlightRadar24's paid API with the callsign and cache that data for a month before calling again (DL1 at 1:24PM on Monday's is usually JFK - LHR for example).

- The above based on historical data at least in the United States seems to have ~95% accuracy w/ around ~$2/mo/user in cost to me. Good not great. Cache hits were ~62%. That's not assuming some global cache as well, which would yield better numbers as more people use it.

Does any one have other ideas who has explored this a little bit? I've been researching for a few days and am in awe by how pricy this industry is.

reddit.com
u/Full_stack_SWE — 8 days ago
▲ 0 r/ADSB

Tips on Reliable Flight Data for Hardware Flight Tracker?

I know this question has been asked a bunch in various subreddits, but I wanted to see if folks had tips based on what I'm building.

Basically, I want to build a desktop LCD screen that shows when a flight flies over you within a certain radius and then shows you basic information like the plane, it's route, etc. I'm an avgeek myself and plane spot at SFO a few hours a week.

When I talked to friends about it, we had lots of ideas like creating alerts for squawk codes, plane types, etc.

Disclaimer: This is a product I intend to sell.

As a bunch of people have already complained, getting this data is actually quite expensive, and I'm really trying to avoid a subscription in the product beyond the hardware.

Right now, the best I have is:

- Use ADSB.lol 's free API to get callsigns within a given radius.

- Call FlightRadar24's paid API with the callsign and cache that data for a month before calling again (DL1 at 1:24PM on Monday's is usually JFK - LHR for example).

- The above based on historical data at least in the United States seems to have ~95% accuracy w/ around ~$2/mo/user in cost to me. Good not great. Cache hits were ~62%. That's not assuming some global cache as well, which would yield better numbers as more people use it.

Does any one have other ideas who has explored this a little bit? I've been researching for a few days and am in awe by how pricy this industry is.

reddit.com
u/Full_stack_SWE — 8 days ago

Has Anyone Ever Looked Into "Smart Chairs"

For context, I track everything. I do lots of bloodwork for my health, track everything I eat, and have an EightSleep for my sleep. I use health wearables all the time.

Something I was thinking about recently was that I spend like 8-10 hours a day sitting in my office chair, and that's something that hasn't really changed in a while. Why isn't there a "Smart Office Chair" that also quantifies some stuff for you like how much you slouch, how much you stand, and also all the other health stuff that most wearables track.

The closest thing I could find was this this called Darma which was a smart cushion that tracked some stuff for you but doesn't really exist anymore.

Has anyone else looked into this or has thoughts?

reddit.com
u/Full_stack_SWE — 12 days ago

If Eight Sleep Removed Temperature Control, Would You Still Pay for It?

Eight Sleep has a ton of features on top of their temp control:

  1. Health tracking (HRV, snoring rate, etc.)

  2. Daily texts that tell you how slept and recommendations to improve it.

  3. Smart alarms based on light sleep detection.

  4. Other stuff I can't think of stuffed inside the app.

I'm just curious whether any of that stuff matters for people. I personally don't care about anything other than my bed being the perfect temp when I hop into it at night.

Do other people find any of the other stuff useful / game changing?

reddit.com
u/Full_stack_SWE — 12 days ago

Has anyone ever looked into "Smart Chairs"?

As the title says, I was curious since I WFH and spend like 8hrs a day on that thing. I have a bunch of health wearables and invested in an EightSleep bed a while back.

The only thing I found was this smart cushion thing that doesn't exist anymore called Darma.

I'm big on tech-y stuff. Anyone look into this before?

reddit.com
u/Full_stack_SWE — 12 days ago

Is there an "actually smart" ergonomic chair?

For context, I'm huge on tracking basically everything in my life. I have health wearables, track exercise/weightlifting, do a lot of bloodwork and journaling, etc. Being able to throw all of that data into ChatGPT has been super useful.

I recently got an Eight Sleep and I've loved it. It tracks a bunch of stuff about my sleep, texts me every morning with how I slept + recommendations, and obviously actively adjusts the bed itself.

It got me thinking: I work in an office and probably spend 8–10 hours a day sitting in my chair. It feels like spending money there is a good investment.

It seems like a chair could know a ton about how you're sitting throughout the day — posture, how long you've been sitting, whether you're leaning/slouching, how often you change positions, etc. It could vibrate if you've been sitting too long or your posture has been bad for a while, and give you a summary at the end of the day.

I looked around and couldn't find much. The closest thing I found was an old product called Darma, which was basically a smart cushion you put on an existing chair. It seems to have disappeared years ago.

Most of the high-end chairs I found seem to solve this mechanically like with better ergonomics, adjusting to your body, etc. rather than actually sensing what you're doing and giving you feedback.

I'll admit I'm also not a chair nerd. I've never owned an Aeron/Embody/etc. My current chair is whatever generic swivel chair my office gave me.

I'm curious if other people have looked into this and has thoughts?

reddit.com
u/Full_stack_SWE — 12 days ago
▲ 22 r/WFH

For people who sit 6+ hours/day, what do you actually hate about sitting all day?

I spend a ridiculous amount of my day at my desk since even meetings are just remote. I've been thinking about how little office chairs changed compared with everything else in the workspace.

If you spent $500 - $1500 improving your desk setup, what actually made the biggest difference? Chair? Standing desk? Walking pad? Something else?

Has anybody tried to get those advanced chairs that shift with your posture or something? Worth it?

reddit.com
u/Full_stack_SWE — 12 days ago

How Do You Remind Yourself to Stand

Hey all,

I don't have a standing desk yet, but I've had one in the past and that's why I'm hesitant to get one now.

Basically, my issue was with actually remembering to stand. I've actually tried to solve this a few times by buying things that like vibrate when your posture sucks or using Apple Watches to tell you to stand. Nothing's quite worked for me though.

The thought I've had recently is that there should be some sort of smart office chair that like forces you to stand somehow. Sort of like how Screen Time forces you to get off your phone. Nothing like that is crazy enough to exist though :)

I'm curious if you guys have invested in anything that actually works beyond a timer or whatever. I'm a tech-y guy, so I like automatic things. Like a standing desk that automatically raises on a timer? That'd be pretty sick.

reddit.com
u/Full_stack_SWE — 12 days ago

Why Isn't There an "Actually Smart" Chair?

For context, I'm huge on tracking basically everything in my life. I have health wearables, track exercise/weightlifting, do a lot of bloodwork and journaling, etc. Being able to throw all of that data into ChatGPT has been super useful.

I recently got an Eight Sleep and I've loved it. It tracks a bunch of stuff about my sleep, texts me every morning with how I slept + recommendations, and obviously actively adjusts the bed itself.

It got me thinking: I work in an office and probably spend 8–10 hours a day sitting in my chair. Why isn't my chair tracking anything?

It seems like a chair could know a ton about how you're sitting throughout the day — posture, how long you've been sitting, whether you're leaning/slouching, how often you change positions, etc. It could vibrate if you've been sitting too long or your posture has been bad for a while, and give you a summary at the end of the day.

I looked around and couldn't find much. The closest thing I found was an old product called Darma, which was basically a smart cushion you put on an existing chair. It seems to have disappeared years ago.

Most of the high-end chairs I found seem to solve this mechanically like with better ergonomics, adjusting to your body, etc. rather than actually sensing what you're doing and giving you feedback.

I'll admit I'm also not a chair nerd. I've never owned an Aeron/Embody/etc. My current chair is whatever generic swivel chair my office gave me.

So I'm curious what people here think. Why doesn't this exist?

Is the data just not useful? Would posture detection not actually work? Would the reminders get annoying? Is a really good ergonomic chair already solving the problem in a better way?

Basically: why isn't there an Eight Sleep for the 8–10 hours we spend sitting at a desk?

I'd definitely consider paying for something like this given how much value I've gotten out of Eight Sleep, but I'm curious if I'm missing something obvious.

reddit.com
u/Full_stack_SWE — 12 days ago

Experience w/ In-Person Meetings

Hi all,

I’ve been a WW member for about a year now. 23yo male. I’m down 30lbs out of a goal of ~110lbs so still a long way to go, but I’m happy with the program so far.

I did want to pose a question to the community though. One of the biggest reasons I joined WW over other calorie tracking apps was the concept of having meetings w/ coaches and other members. The virtual meetings have been great since there’s a lot of meetings geared towards millennials & topics that are relevant to me.

However, I’ve been feeling very weird going to the in-person meetings. The coaches have been fantastic. The concept of weighing in front of somebody is amazing for accountability. But I couldn’t help but noticing, and I really don’t want this to come across as rude at all, that most of the members at the in-person meetings fall into the demographic of 60+ women.

There is absolutely nothing wrong with that, but as a 23yo male, I have just been feeling extremely weird going to the meetings despite how helpful it is because of that. Not only does it just feel weird being sometimes the only guy there, and definitely the only young guy, but there seems to be so many topics that could be helpful to me that aren’t really discussed. For example, playing soccer a few times a week has been very helpful for my journey recently, but it’s not really a relevant subject to seniors. And most of the topics discussed at the meetings especially when it comes to habits aren’t relevant to me. I want to talk about how hard it is to live a social life in a big city while on WW. I want to talk about dating while being in WW. I want to talk about how hard it is to go out on Friday night’s with my friend groups while resisting urges. But a lot of the conversations involve family visits, attending grandchildren’s sporting events, maintaining basic walking habits, etc.

I have gone to pretty much every meeting venue in the area that I live & it’s the same experience but with different people. I feel like there’s a big gap in the WW community for this & I want to know how others feel about it. I also want to know if maybe this is unique to the part of the country I live in, which I’ll keep private just to respect member’s privacy given the nature of the post.

Again, I want to emphasize that I don’t mean to be rude & I’ve actually had a lot of pleasant conversations, but it just seems that there’s quite a lot of people like me who might be discouraged from going to in-person meetings & not really getting the most out of it.

Let me know you all’s thoughts.

reddit.com
u/Full_stack_SWE — 14 days ago

[REVIEW REQUEST]: Smart Glasses Always On Audio Recorder

Summary

This is a 6-layer PCB that's in a final form factor to go into smart glasses. The device is an ESP32-S3FN8 powered board that will stay recording to a MicroSD Card when powered on, then sync to a companion app using Wi-Fi at night. Double sided board. Details below.

Would love a review before manufacturing the board.

Main Components:

- ESP32-S3FN8 (8MB Flash) w/ 40Mhz Crystal

- USB-C w/ ESD Protection for Charging & Uploading Firmware

- LiPo Charger for 3.7V 601452 LiPo Battery I'll be using (500mAh)

- 3.3V Buck Boost Converter (TPS63070RNMR)

- Boot / Reset Circuit

- Microphone

- MicroSD Card

- Chip Antenna for WiFi

- Fuel Gauge for sensing exact battery %

- Action button & On/Off Switch to control power

Stack Up:

- Top Layer: Components & GND Pour

- Inner Layer 1: GND

- Inner Layer 2: 3V3

- Inner Layer 3: SIG & GND

- Inner Layer 4: GND

- Bottom Layer: Components & GND Pour

u/Full_stack_SWE — 2 months ago

[Review Request]: Layout for Smart Glasses Dev Board

Hi all,

I've posted a schematic before for my audio recording smart glasses. This is the layout. Reminder, this is a dev board, not the final form factor, so I can make sure components work properly & debug.

View Full Schematic Here

Previous Post Link

The Project: Smart glasses that will record audio and sync it to a mobile app via Wi-Fi when plugged in to post-process in the cloud.

This is my first time designing my own PCB, so give me feedback on the board as well as convention.

My Stackup:

- Layer 1: SIG & GND

- Layer 2: Uniform GND

- Layer 3: PWR (3V3, VSYS, VBUS)

- Layer 4: SIG & GND

For Reference:

- MicroSD in the top left

- Buck Boost in the bottom left

- LiPo Charger in the bottom middle

- Fuel Gauge in the middle

- Buttons at the top

- USB-C in the bottom right

- ESP32 in the middle right

- Mic on the far right

- Antenna on the top right

Main Components:

- USB-C Charging w/ ESD Protection (Will use 3.7V 500mAh LiPo)

- LiPo Charger w/ LED

- Fuel Gauge to read accurate battery %

- 3.3V Buck Boost Converter (Please review extra carefully)

- ESP32S3FN8 (Comes w/ 8MB Flash, No PSRAM)

- MicroSD Slot w/ ESD Protection

- Chip Antenna

- Lots of test pads for debugging

My Goal w/ This Board: I would like to order this board from JLCPCB, verify all components work and start to develop firmware, and start redesigning the layout into final form factor.

u/Full_stack_SWE — 3 months ago

[Review Request]: 3rd Time's the Charm. Smart Glasses w/ ESP32R8, Mic, MicroSD, Fuel Gauge (Schematic Only)

Hey all,

Thanks for bearing with me as I've been asking for these reviews. I've learned so much from this community. This is a schematic only. I want to get it right before moving on to the layout since I'm new to this.

Link to Full Schematic

For Context: I'm an entrepreneur with lots of software experience, totally new to hardware. My latest company is building smart glasses that will capture conversations in real life and sync with a mobile app that has lots of AI features. Last Monday, I started a binge of YT videos to learn how to design custom PCBs. I've played with the Xiao Seeed ESP32S3 Sense for the last few months and product constraints required a custom board.

Main Features I Need Working Out of PCB:

- Button that records audio (or an always-on feature, customizable by user).

- Audio records to MicroSD (decided against eMMC for now).

- When smart glasses are plugged into USB-C at night for charging, device uses home WiFi network to upload audio to the cloud for post-processing.

- Users optionally can fast transfer via WiFi AP.

- Mobile app can interact with smart glasses to see recording progress + accurate battery percentage.

- 500mAh 3.7V LiPo Battery will be used for all day battery (601452 if you're curious).

Things I've Tried to Improve Based on Feedback:

- I actually ran ERC this time & fixed issues and random shorts.

- I realized GND should be pointed down and power should be pointed up. Cardinal sin :)

Things I'm Still Worried About:

- I've heard the buck boost converter setup with this board can be finicky. Would love input here.

- Chip antenna isn't what I was used to with external antenna, but product requirements made this a must. Advice around it's setup would be great.

Notes:

- This will be ordered as a test board first, so ignore test pads for now.

Please give me feedback that'll help me move onto the layout and also things about schematic conventions so I can follow best practices and keep learning.

u/Full_stack_SWE — 3 months ago

[Review Request]: Smart Glasses PCB (v2 After Feedback)

[EDIT]: I'm very aware that I have a terrible short that probably distracts from the rest of the board. I'm so sorry, should've ran ERC before posting but... first schematic :) If you have general feedback at this point about schematic conventions, that's what I'd love to hear. After fixing ERC issues, will repost for feedback before moving on to the layout.

[EDIT #2]: I posted the updated version here.

I binged hours and hours of YouTube. He’s what I came up with.

Hey all,

Last week, I made this post showing a schematic and layout that had mostly been done by a contractor and I was still very early in learning PCB design.

After lots of feedback, I realized there was no way I could outsource this and have binged dozens of hours of YouTube videos & Phil's Lab tutorials. (I literally had to start with the classes "What is Electricity Video" :))

Fast forward to today, I have redesigned the whole thing myself, starting with a finish schematic, and I'd like a hard review on it before moving on to the layout.

Full Schematic Link Here

For context:

I am building smart glasses that record your day and conversations and then connects to a mobile app that has some additional AI features.

Key Hardware Related User Flows:

- For v1, I decided to only have audio now.

- This device will be always on and will be powered through a 3.7V 500mAh LiPo Battery (601452).

- Audio will sync at night when glasses are plugged in by uploading via a saved WiFi network.

- Additional transfer option includes WiFi AP + BLE transfer to the phone.

- Basic BLE functionality will be supported such as checking various recording statuses and battery health (hence the fuel gauge).

- Device will write to a microSD card & clear it after syncing.

- Ideal final device size is <75mm x ~14mm

Some Thoughts About the Schematic

- The power path. I've seen some complaints about buck boost converters with the ESP32 and am not sure whether to switch to an LDO or use both or what the solutions here are.

- I'm going to follow what you all said in the previous post and order only a development board for the first version instead of trying to get the form factor going. That's why I have all those ugly test pads.

- I tried to include ESD protection in a lot of areas since this will be on someone's face all day. Please lmk if I missed anything critical.

- While I want feedback on the schematic's functionality, please feel free to give me feedback about schematic design norms as well. I'm basically a week into all of this but am very willing to learn and adjust.

- I purposely added sizes to all resistor and capacitor names for the purposes of this review in case there is something critically wrong.

- With my previous post, I actually did end up ordering the board for the experience, and it was horrendous. It was super flaky getting it even booted up with firmware. I'd like to get a board that consistently powers on at least and iterate from there :)

- I have picked out all parts from JLCPCB and have tried my best to ensure compatibility. Please lmk if something is horrible.

u/Full_stack_SWE — 3 months ago

[Review Request]: First Ever PCB Design: Smart Glasses Wearable

Hey everyone,

I’m currently working on an early prototype PCB for a wearable AI memory-capture device I’m building. The goal is essentially lightweight wearable hardware similar to the Meta RayBans that captures low-power audio/video and makes your life searchable with AI later (for work meetings, consent-friendly recording, etc). I want to emphasize that I am absolutely brand new to this, and I tried my absolute best to follow the strict review guidelines when making this post. Please call me out if I'm doing something wrong.

Schematic Link Here

This board is based around an ESP32-S3 and includes:

  • camera interface
  • microSD storage
  • USB-C
  • battery charging/power management
  • microphone input
  • status LEDs/buttons
  • low-power sleep/wake behavior

I come from a software background & am an entrepreneur (Y Combinator), not EE/hardware, and this is my first PCB project. I had created a schematic and attempted basic routing, but eventually, I hired someone to help create the board/schematic in KiCad because I honestly didn’t know enough to do it myself at the time, but I’m now trying to learn PCB design properly so I can iterate faster and stop blindly outsourcing parts of the process. This PCB is the combination of my work & the outsourced hire. It's currently on its way from JLCPCB, but I am already thinking of many improvements I can make.

I’ve spent the last few hours trying to clean up the schematics/layout/images enough to make this reviewable according to the subreddit guidelines, but I’m sure there are still beginner mistakes here.

Main things I’d especially appreciate feedback on:

  • ESP32 antenna/RF layout
  • grounding strategy
  • power routing / regulator placement
  • USB-C routing
  • decoupling / bypass capacitor placement
  • manufacturability / assembly concerns
  • anything that looks fundamentally wrong or risky

My goals:

  • Reduce the overall length / size of the board
  • Be very power conservative. Using a 500mah 3.7 LiPo battery & trying to get as much recording power as possible out of the wearable.

I attached:

  • top copper view
  • bottom copper view
  • full routing/all copper view
  • antenna + power closeups
  • 3D renders
  • schematic PDF

I’d genuinely appreciate blunt feedback. I’m trying to learn this properly rather than just treat hardware as magic.

Thanks in advance.

u/Full_stack_SWE — 3 months ago