October 25, 2024
Chicago 12, Melborne City, USA
C#

AVR Microcontroller Blinking LED Not Working

I am trying to learn embedded electronics using the 8-bit AVR microcontroller and whilst I have experience with electronics and programming I am a noob with embedded systems. The chip I am trying to program is the Atmega168. I am following the Make: AVR Programming book but I am at a complete loss trying to

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java

java bytecode exception catch block's boundary

I got a class which generated by dex2jar, the bytecode like this public boolean a(com.google.android.exoplayer2.metadata.Metadata); descriptor: (Lcom/google/android/exoplayer2/metadata/Metadata;)Z flags: (0x0001) ACC_PUBLIC Code: stack=2, locals=6, args_size=2 0: iconst_0 1: istore_2 2: aload_1 3: getfield #38 // Field com/google/android/exoplayer2/metadata/Metadata.d:[Lcom/google/android/exoplayer2/metadata/Metadata$Entry; 6: astore 5 8: iload_2 9: aload 5 11: arraylength 12: if_icmpge 134 15: aload 5 17: iload_2 18:

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python

How to create dataframe with nested List of varying elements in Polars?

I am trying to create a dataframe from nested list that has varying elements in it. Eventually I will unnest/explode this but stuck at first stage as of now. Below is the sample data and code which is failing: import polars as pl pl.DataFrame({'title': ['a','b','x','y'], 'info': [['Email','Contact','State','City','Wesbsite','Source'], ['Email','Contact','State','City'], ['Email','Contact','State','City','Wesbsite'] ['Email','Contact','State'] ] }) Even this is

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GPL

Free GPL WordPress Form Builder Plugin, Contact form – ARForms

            Top Selling WordPress Form Builder Plugin ARForms is top selling WordPress form builder plugin of 2024. Build finest responsive WordPress forms within just minutes, No coding, no design experience needed. Also includes built-in facility of WordPress popup forms. ARForms is not limited to creating just WordPress contact form, it is capable to create any type

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javascript

How can you check if a javascript map has a duplicate key

I’m working with a Map in JavaScript and need to check that it doesn’t contain duplicate keys. The map I’m working with is below. const colors = new Map([ [1, 'blue'], [2, 'orange'], [1, 'pink'], // This duplicate key should trigger an error [3, 'yellow'], ]); In this situation because the number 1 is used

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SQL

Joining different tables with the same columns but different data

I have 4 tables all with the same layout. ID, Name, Totals Each table may have unique and non-unique IDs if the ID and Name is reused but with different totals. For example; Year1 ID Name Totals 1 Bob 15 2 John 2 3 Smith 4 4 Carl 4 Year2 ID Name Totals 1 Bob

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CSS

How to exactly fit an image in a roundedImage for .SVG image?

I’ve been trying to make this work for quite some time and have no clue whatsoever. I’m trying to make an image having a little gradient border, and fit in a rounded box. <svg viewBox="0 0 2400 400" xmlns="http://www.w3.org/2000/svg" width="100%"> <defs> <linearGradient id="borderGradient" x1="0%" y1="0%" x2="100%" y2="0%"> <stop offset="0%" style="stop-color:#5BCEFA; stop-opacity:1" /> <stop offset="33%" style="stop-color:#FFFFFF;

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HTML

Creating a table using html. How to make the cells not move out?

I need to make a table like this in HTML. Tried to do a normal layout, but any time I try to fix something, the table moves away….. <style> table { border-collapse: collapse; width: 100%; } td, th { border: 1px solid black; padding: 8px; text-align: left; } </style> <table> <tbody> <tr> <td colspan="2" rowspan="2"></td>

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Android

Suitability of NRF24l01 for BTLE advertisements

I want to use NRF24L01 for BTLE advertisements (received by Android phone) in a product but as per this thread https://devzone.nordicsemi.com/f/nordic-q-a/51120/using-the-nrf24l01-for-sending-out-ble-advertisement-packets-in-a-product-is-this-legal-certifiable it does not have the correct frequency deviation. Can anyone please explain what it means and its impact in BTLE advertisement? Note:I have built a prototype and it seems to be working fine Thanks

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PHP

PDO driver mysql is not supported displays while running an Admidio-based project's container

Recently I tried to fabricate a Docker container in my Admidio-based web application, but I encountered to a tiny error: When I open the localhost:8080 web page it displays the following message: "The requested PDO driver mysql is not supported" I modified several times the docker-compose.yaml file and the Dockerfile. Here it is the docker-compose.yaml:

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