Upcoming AAE Questions

[celest terrace]

Post questions here for any upcoming AAE. The schedule is currently in flux so we'll get to them when we can!

[grizzled monolith]

An ePaper display like the “Adafruit 1.54" Monochrome SSD1681” uses a gate driver circuit to boost the 3.3v to the required VGH and VGL.

I have tested the breakout and it stops working just below 2.5V.

Which components would need to change for the circuit to still function when the source voltage into the inductor is as low as 2.2V?

(I know an alternative is to add a boost converter to get the lower voltage up to 3.3V)

[rustic walrus]

How have the Fruit Jam boards been selling compared to what you expected?

[neat mesa]

Are you still going to make the i2c Si4732 board?

[versed shell]

I'm thinking about making a Pinewood Derby sensor gantry for our ancient pinewood derby track. Which sensor would be best for use in a covered outdoor environment in Florida 8" (or so) above the track? Do we think IR would be okay, or should we look at TOF or sonar? The update times would have to be pretty quick.

[dark osprey]

Ahoy dear engineers, my son and I recently 3d printed a baloon powered hovercraft we found on thingiverse (https://www.thingiverse.com/thing:3096043). It worked quite well, but we thought we could improve it, by redoing it in tinkercad with a thinner body to save weight and 4 smaller holes on the sides of the bottom instead of one in the middle. We also tried to attach a skirt on the sides, but that didn't work at all and despite all our experiments, the original still worked best by far.

I found that I was not able to explain the dependencies of weight, airflow, surface and all that, so I thought it might make sense to ask an engineer, if and why that model is already prime engineering or how it could be improved 🙂

Or is this only a place for electronic type of questions? Then I would change the subject to how to make an RC hovercraft. There are also projects on thingiverse and it would be interesting to hear about which ones are most promising and why none of the projects use axial fans to build pressure for the air cushion.

Cheerio!

[timber knot]

Anyone have experince of working with the TPS22918?

[grizzled monolith]

If you are looking for input from the community, you may want to try the https://discord.com/channels/327254708534116352/656770973852237844 channel.
(I have used the TPS22922)

[distant knot]

Got a few questions concerning the Xbox Adaptive Controller & the Adafruit TRRS TrinKey. I'm using 2 analog xy potentiometer joysticks for the thumbstick input. The XAC has it's own TRRS analog inputs, but when using them, there's something in the programming of XAC that makes it slowly(usually) trim itself where it has significant drift/bias, making the game unplayable. Sometimes it happens faster than others. It'll end up like the joystick is permanently cocked at __° to the side (unless you reset the XAC) but will just repeat the process over again.

My solution to this problem is using the TRRS TrinKey through the XAC's USB ports. That setup works extremely well, no issues with the eventual drift whatsoever, with one caveat: lag. I've already used Mu/CircuitPy to adjust the "Smoothing RollingAverage" to the minimum setting (1). Is there anything else that can be changed or adjusted in the code to reduce lag? Could running this code on a bigger/faster microcontroller board be a solution? Really hoping to get something figured out here, because, as an example: multiplayer FPS (CallOfDuty/Battlefield) I'm at a major disadvantage because not only is it harder to aim, but by the time i do, I've already been shot lol. On a Racing/Driving type game it's almost unplayable because the lag creates an issue of overcorrecting because of the slow response time. We're talking just a few milliseconds, but that can make all the difference when trying to play a fast paced or competitive game. I'm a quadriplegic so this is the only way I can play. Hope we can figure this out to help the rest of the adaptive gaming community!

Thanks, and looking forward to the Livestream!

[jovial rivet]

in the rp2pio docs there are tons of different commands associated with the rp2pio.StateMachine class under the parameters that looks like they can.. well... just about anything you could need, and the one in particular that interests me is background_write because it looks like you could loop it so it would continue to write whatever was in that buffer over and over to pin in the background and it would continue to do so until you either changed what was in the buffer or specifically told it to stop while the normal cpu executes code. what I can't find is any example of using the StateMachine with anything that would show to you use all those commands that aren't listed as Parameters for the StateMachine. Even if it doesn't work the way I want, it seems like there is a ton of untapped potential in that library that's..... for lack of better term, above the understanding of alot of people. I guess what i'm asking is how you use all those other StateMachine commands I can't find examples for

[jovial rivet]

nevermind... there are examples for what i'm looking for, i just wasn't as thorough as I thought I was

[umbral vine]

Is the CP2105 dual uart still coming soon? I want to make a converter to the classic RS232 specification that basically runs two serial ports over DB25. Some unix workstations and such used this type of connection. And I happen to be restoring one such as a side project.

[fading niche]

I need to solder an FFC/FPC directly to a board I am making. Are there any tools and techniques I need to know about? I have several of your OLED modules like this, and I hope you can share any info you might have. By the way, my project is a COD (Chip On Glass) LCD breakout similar to these because I needed something sun-readable without going to ePaper. It turns out the module I found has a non-standard pitch FFC (.6mm, NOT .5mm) that's why the direct board solder

[stable aspen]

Has there been any movement on bringing the new ESP chips to adafruit products? Particularly interested in the C5.

[tranquil walrus]

Not much movement yet, but getting closer as the existing 'new product' backlog is cleared. Ladyada was talking about this week in a meeting as we discussed the LilyGo T-Dongle C5 [with it's dual usb plug / SD socket].
Expect to see some C5 and P4 designs in the upcoming months.
-Whoops thought this was normal channel msg 🤦 _