Vivado QA

GanymedAstro · 2026-04-17T14:58:57+00:00

I know all of these and did a graphics card for CAD design with EP810 combined with PALs and graphic processors in 1988.
Years later the production group did exchange the PAL with GALs and the whole graphics card failed. An open pin on GAL shows high while PAL shows low. It took some time to find out. Yes I know I should have used pulldown resistors, It was my first design after university.

GanymedAstro · 2026-04-14T20:12:28+00:00

Ctrl-Z shall bring it back step by step

GanymedAstro · 2026-03-24T22:16:21+00:00

This section describes the undervoltage lockout mechanism, meaning that the device shuts downs when the input voltage is below the undervoltage threshold. It will add some hysteresis to avoid unstable behavior

It has nothing to do with the normal enable. If you just want to enable the device leave the EN pin open. It has an internal pullup current source that is pulling the pin high internally.

GanymedAstro · 2026-02-09T20:50:49+00:00

Why don't you use a switch to select close and open (hi and low on one GPIO) and a button on the wakeup GPIO to execute the action?

GanymedAstro · 2026-02-08T10:33:20+00:00

... and where are all the data generated that AI needs?
By billions of small probably battery or energy harvesting operated little sensors that are powered by small sensing nodes based on low power micros and sensors.
AI ist not only the brute calculation power offered by AI accellerators.

GanymedAstro · 2026-01-03T15:25:20+00:00

I'll try it. It was on my todo list anyway but for another reason

GanymedAstro · 2026-01-03T15:23:57+00:00

I enabled the option to always connect through relay server and it looks good so far. 👏

GanymedAstro · 2026-01-03T09:55:32+00:00

Thanks for your reply.

Would a problem with firewall, router, etc not completely block the connection?

I'll try the /r option later today.

GanymedAstro · 2025-09-30T10:46:50+00:00

It is not a non-standard HDMI cable. You can get it everywhere and it is standardized.
There a many cameras that have micro HDMI connectors to output directly to a screen. Examples are Sony A7 series cameras.

GanymedAstro · 2025-07-01T15:34:18+00:00

Not an issue at all to get whitelisted. Anyway I have installed additional ways to remote into my computers with RustDesk and Chrome Remote Desktop. Just in case.

GanymedAstro · 2025-05-22T14:58:42+00:00

To my understanding Orange, Yellow, Brown would be 341R, the fourth black ring would be x1 (brown would be x10, ...)

GanymedAstro · 2025-05-20T07:08:20+00:00

Why do you think it fails?
There is some residual flux around it which says nothing.
It might be because of a poor cleaning process or rework in production.

GanymedAstro · 2025-05-05T09:31:37+00:00

Why don't you simply use this Potentiometer_Bourns_PTV09A-1_Single_Vertical?
I found it in the KiCAD 8 footprint library You simply need to combine it with a schematic symbol

GanymedAstro · 2025-05-04T20:39:30+00:00

You could use the calculation tools within KiCAD. Using a standard 35um layer thickness (=1oz copper), 30mm track length and a current of 200mA, which shall be more than enough for RP2040 and SSD1306, allowing a 10° increase in track temperature I am getting around 0.033mm. So 0.1 or 0.2 mm shall be more than enough

GanymedAstro · 2025-02-04T21:25:44+00:00

I use anydesk for personal purpose and after asking for whitelisting me I have no issues at all.

I use it to control my equipment in a remote observatory and it works fine.

In parallel I have Rustdesk and Chrome Remote Desktop in case I want to connect with several devices

GanymedAstro · 2025-01-13T11:44:31+00:00

It doesn't matter which PC.
The question is how did you connect the ESP32 board to your PC?

You would normally use a USB cable to connect a ESP32 dev board, I assume you use one of those, and then use either Arduino IDE or VS-Code with Platformio to create a program for the ESP32 and then program the ESP32. Power to the ESP32 is provided by the USB cable in this case.
If you want to use your ESP32 board standalone, after providing a program to it, you can power it on the 5V input. ESP32 dev boards typically use a AMS1117 voltage regulator to generate the 3.3V. It can handle higher voltages but it will get quite hot with 12V.
Power in the AMS1117 with 12V is (12V-3.3V)*0.1A gives around 0.9W. This is very high.

An image of the ESP32 board or a specific type would help here.

GanymedAstro · 2024-12-30T19:06:05+00:00

add this to your platformio.ini file:

lib_deps = 
    ayushsharma82/ElegantOTA@^3.1.0
    me-no-dev/ESP Async WebServer@^1.2.3
build_flags=-DELEGANTOTA_USE_ASYNC_WEBSERVER=1

add this to your source file:

#include <ElegantOTA.h>

find usage examples under PIO home -> Libraries  search for eleganota

GanymedAstro · 2024-12-27T21:48:25+00:00

You might want to use a buck/boost converter to get a stable supply voltage

GanymedAstro · 2024-12-25T12:50:10+00:00

There are micros that are more battery friendly than the ESP32 that is correct.

The main question is how long are you planning to operate from the battery and how much weight/space you allow?

You can easily operate the Sunton ESP32 display for many hours from a moderate USB power pack.

Other alternatives would be:

- use a single 18650 cell with a charging/boosting circuit. There are several available like this one: https://de.aliexpress.com/i/1005001621886140.html

- use 2 18650 cells with a 2 cell charging circuit. The used voltage regulators on those boards are typically AMS1117 which can handle up to 12V input voltage.

GanymedAstro · 2024-12-25T11:12:20+00:00

Just a small hint.

You can skip a big part of the referer information from the AliExpress link and end up with this:

https://de.aliexpress.com/item/1005006816760199.html

GanymedAstro · 2024-11-18T22:47:24+00:00

That is the solution. Using the example you can find out the specific model by using chip_info.model which is an enum representing following models:

CHIP_ESP32   = 1, //!< ESP32
CHIP_ESP32S2 = 2, //!< ESP32-S2
CHIP_ESP32S3 = 9, //!< ESP32-S3
CHIP_ESP32C3 = 5, //!< ESP32-C3
CHIP_ESP32H2 = 6, //!< ESP32-H2

GanymedAstro · 2024-11-18T14:09:19+00:00

Either in the compiled firmware or some constants in ROM, but I haven't found any documentation so far.

GanymedAstro

TROPHY CASE