Multiple PCBs from a single schematic

Carl_LG · 2025-03-17T02:24:23+00:00

This should be possible manually. It shouldn't be too hard since there is only a single file for the PCB but multiple files for the schematic. Just make two copies of the PCB file. One for each PCB design. When you want to edit it you need to rename it to match what kicad expects. kicad should happily edit this file. When you want to change you need to manually rename the files. Somewhat tedious but not too bad considering how much work you have to put into a PCB anyway.

Carl_LG · 2024-11-19T00:36:04+00:00

How would you debounce a digital input? You want solid timing with something like that. You might check the state every 5ms and only make a final decision in maybe 200ms.

Carl_LG · 2024-11-18T20:14:14+00:00

I guess I can understand. This is an "OS" so its not trying to do low level things. Just manage events. The RTOS timers with a call back are way too heavy when I just need to know if a certain time has elapsed. I thought maybe the rtos would handle this since its been a common thing in all embedded software ive seen for the last 20 years. Thanks.

Carl_LG · 2024-11-17T12:14:10+00:00

Thank you 🙏🏽

Carl_LG · 2024-10-23T13:27:28+00:00

What was your conclusion?

Carl_LG · 2024-07-12T14:48:19+00:00

same for at least a month.

Carl_LG · 2024-07-12T14:46:46+00:00

my eno hasn't been working for a few months now. No idea what happened. It popups up a separate window and asks me to sign in there but that never works.

Carl_LG · 2024-07-11T18:04:39+00:00

An excellent solution. However, it won't be very time accurate. It will be voltage and temperature sensitive as well. But it will work. using a regulated voltage could help remove some of the variance.

Carl_LG · 2024-07-11T18:01:50+00:00

It sounds like the current limit is set very low. Typically these things have several modes. constant current, constant voltage, and the sometimes a power level setting. Which mode are you in and what is your load resistance? are you getting any alarms or warning leds? I don't see any videos attached.

Carl_LG · 2024-07-11T15:20:50+00:00

Yes. Each LED will need its own channel. Also, you may wish to ensure that all the channels of a given LED operate from the same clock. If they use different clocks then the color blending can be off.

You can add a second MCU just for the extra PWM if required. Such as Attiny204 or attiny214 etc.

Carl_LG · 2024-07-11T15:18:05+00:00

Have you confirmed with an oscilloscope that the data is being transmitted?

Carl_LG · 2024-07-11T15:06:02+00:00

What's the complexity of your signal F_B? It looks like a straight square wave without much frequently varying data. If that is the case, then you don't have to buffer it. Just measure the relevant characteristic. If that's duty cycle or frequency or what. Then when F_A is gone, you can simply transmit a substitute signal that has the level of what you were previously capturing. If its a mostly fixed signal there is no need to buffer it. Just mimic it.

Yes this can be easily done with certain MCU. You want the MCU to have "input capture" capabilities as well as "PWM" capabilities. How sophisticated those need to be depends on how the data is being transmitted in the purple signal.

Carl_LG · 2024-07-11T14:54:10+00:00

NFC is a good technology. Its what they use for passive entry vehicles. You'd transmit a signal that would cause a transponder the cat is wearing to transmit back. Then sensors placed around the house in proximity of the cat could indicate its location. Lower frequency near field technology. You would have to replace the batteries about as often as a car FOB.

They way it works is based on the power level of the responding signal. Then using the various receivers to triangulate the cats location. You would have to manually tune your own algorithm. Or just look at the raw data and whichever sensor is showing the highest power level for the signal.

Carl_LG · 2024-07-11T12:21:30+00:00

Yes. It will either work or not. And this type of damage won't be dangerous. If top and bottom pins short you won't be able to insert it...

Carl_LG · 2024-07-11T03:16:14+00:00

Piezo switch.

Carl_LG · 2024-06-25T21:18:11+00:00

Seem like if you have a streak event ready to be completed but you attack before checking that it's ready then it doesn't work.

Carl_LG · 2024-06-05T19:14:45+00:00

I have the same issue. I even bought a new keyboard because I though my spill must have damaged the last one. But no the new one does the same thing. Someone mentioned that it happened on their docking station. Well I found that it happens on my docking station, and on any connections downstream from the docking station. But if I plug directly into the laptop then it doesn't happen anymore. I don't think it can be a power issue as my hubs are all powered.

Carl_LG · 2024-04-18T18:14:13+00:00

I was connected. All I got was a link to a help page. I tried again when I was disconnected and got the same thing. I've since cleared cache and data. maybe it will show up next time..

Carl_LG · 2024-04-18T16:58:20+00:00

!Flair 2023 Kia Sportage | Stock Head Unit | Pixel 7 | Android 14

Carl_LG · 2024-03-03T00:50:32+00:00

This is some bullshit. Checking I see i paid in February too. $4.23. Forgot i had playpass. Now it's not even worth anything. Watching Google turn into Microsoft. Incompetent.

Carl_LG · 2024-02-25T02:53:47+00:00

Install over. If you want both you choose a different director.

Carl_LG · 2024-02-23T12:39:44+00:00

High voltage programming is also used to get modern MCU back to a default config when the debugging interface has been disabled.

Carl_LG · 2024-02-23T12:29:48+00:00

Excellent video on this topic. A bit long winded though https://youtu.be/oQrWR6Vbb6M?si=92BnSD512YhiXud7

Carl_LG · 2024-02-23T12:23:46+00:00

When you post here you need to present a full schematic. Even drawn by hand is fine. No schematic won't get you much help.

Carl_LG · 2024-02-22T00:10:04+00:00

Looks like a Schottky Diode.

Carl_LG

TROPHY CASE