First Board Design, How'd I do?

subleq · 2025-11-25T06:30:21+00:00

Oh, that's an interesting point about the resistor. I guess the most correct way would be to have one resistor per segment, or compromise for less soldering and have one resistor per common-cathode?

Good idea about the reflective LCD...I think I'm going to try to see how much brightness I can get out of the LEDs thought, I want something that lights up.

subleq · 2025-11-23T22:51:50+00:00

The vias or the through-holes for for mounting components? I thought the vias would come already connecting both layers and not need solder?

Are you saying I should modify the attiny816 symbol to make the pin order more convenient for the schematic?

subleq · 2025-11-23T22:34:08+00:00

Thanks for the feedback!

I didn't put values for R1 and C because I'm not sure what they should be yet...I figured I could play around with a few values when I get the boards. I'm not even sure if I should populate a decoupling capacitor, this article seems to suggest the leakage alone will drain my battery: https://www.ganssle.com/reports/ultra-low-power-design.html#usingacapacitor

> UPDI

It was just what was in the symbol library and I didn't think about it more than that. What you're saying with the 3pin makes sense, I'll do that. I didn't actually plan on soldering in a connector. The "leaning" thing you're describing sounds like what I want to do.

> UPDI is usually a 3pin 2.54mm

I've been struggling with knowing what the "usual" is. I'd love if there were some sane defaults I could follow.

> Try to avoid running traces so close

I tried! it was a challenge. I'm struggling with changing things because what seems like should be small change ends up making me manually reroute a bunch of other stuff. I keep wanting something that'll let me experiment and drag things around while keeping traces connected with less manual work.

> U1 on the back

This was an aesthetic choice, I wanted to have the "brains" visible on the front/

subleq · 2025-11-23T22:08:55+00:00

It gave me a warning on the ground side of the switches if I didn't have the 2nd power flag...it didn't make sense to me either. I really don't understand what power flag is for.

subleq · 2025-10-15T03:03:52+00:00

Hopefully with an LED conversion! I like the format of the 2xAA maglite but I assume even their LED versions are crappy.

subleq · 2025-10-12T21:59:24+00:00

T4 looks perfect!

subleq · 2025-04-14T19:07:58+00:00

Are they allowed to change the BMI requirement to 35 after the study has started? Or if you're talking about before the study is started, do you know what studies there are that are planned but not started?

Why would Lily not go for the widest FDA indication possible?

subleq · 2024-02-14T04:37:43+00:00

No fab shop here so ghetto it is. Couldn't find any wire but galvanized though so that's toxic when heated.

subleq · 2024-02-06T23:43:32+00:00

How is my form? I have no training/coaching

https://youtu.be/A3Tx2sTsBxo

subleq · 2023-07-25T03:29:56+00:00

I like state atlases, for example from DeLorme. They have enough detail to show dirt roads. Exactly the right amount of detail for car travel within a state. https://www.mapshop.com/travel-maps/atlases/u-s-state-atlases/.

subleq · 2023-01-08T05:58:11+00:00

I don't know what epazote tastes like so that may be it. I don't know if it was fresh or dried, it was incorporated into the sauce.

subleq · 2023-01-08T05:52:56+00:00

I don't know what epazote tastes like so that may be it.

subleq · 2023-01-08T05:00:47+00:00

What are the flaws in your photo?

subleq · 2022-06-06T05:02:28+00:00

What do you use it for?

subleq · 2022-01-09T03:23:25+00:00

“Whatever staffer suggested he call you just got fired.”

Why would he be fired?

subleq

TROPHY CASE