When you have solar panels with micro-inverters, any energy you don't consume gets reinjected into the grid, often for free. That's energy you produced but can't use later. What if you could store that surplus during the day and feed it back into your home at night? That's exactly what …
Did you notice that I just love tinkering with all sorts of computers, random electronic gadgets, and even those weird, exotic microcontrollers? Well, then the M5Stack Cardputer came out—a little device that’s almost like owning a tiny 1980s microcomputer. So here, you’ll find a regularly updated list …
I just love tinkering with all sorts of computers, random electronic gadgets, and even those weird, exotic microcontrollers. Well, then the M5StickC came out—a diminutive device that evokes the spirit of the compact computing systems of yesteryear. One might therefore inquire: how does one ascertain when novel firmware awaits …
Did you purchase a small OLED screen on AliExpress and are struggling to get it working on your Raspberry Pi? I hope to steer you in the right direction with this handy guide. I'd already had a bit of fun with a 128x32 OLED display and one of the many …
How to use MCP23017 I2C IO expanders with the Raspberry PI and Circuit Python? What about connecting a Rotary encoder to your Raspberry PI? Like me, you may have a small project to connect one or more rotary encoders to your Raspberry PI. The MCP23017 chip seems ideal for this …
The CircuitPython installation guide is a comprehensive resource for tech enthusiasts looking to get started with CircuitPython. CircuitPython is a programming language based on Python that is specifically designed for microcontrollers and single board computers. It provides an easy and beginner-friendly way to program these devices and interact with hardware …
Ce guide d'installation de CircuitPython est une ressource complète pour les passionnés de tech qui souhaitent commencer à utiliser CircuitPython. CircuitPython est un langage de programmation basé sur Python, spécialement conçu pour les microcontrôleurs et les ordinateurs monocartes. Il fournit un moyen facile et convivial pour les débutants de programmer …
As you may know, the PI 5 is a fantastic improvement to our cherished Raspberry PI! The benchmarks below show how much our Raspi has improved across the board. So, is the upgrading worthwhile? I gathered the benchmark results I could find online and I'll summarise the performance increase by …
I have had a few solar panels connected to the grid via micro-inverters for some time. How can I minimize the free reinjection to the grid when there is no commercial solution at a reasonable price? You will find below how I store the solar power surplus produced during the …
Lost with your dual-band Mikrotik AP configuration? There are several CAPsMAN HowTo articles on setting up CAPsMAN, but none that I discovered mention a tiny aspect that seems to trip people up every time: a CAP with two WiFi radios, one for 2.4 GHz and one for 5 GHz …
My ready-to-use Cloudformation template for automatically stopping and restarting your EC2 AWS instances. You'd like to save some money on AWS, by automatically shutting down your EC2 development instances at night? Install this Cloudformation template and spend less money! One of the recommendations of AWS is to automatically shut down …
Sixteen years ago, Bitcoin was the only cryptocurrency. Today, there are now thousands of coins. And you can mine them all, on a Raspberry Pi. Are you curious to see how much profit you can make mining some crypto coins on a Raspberry Pi? In short: Mining requires specific hardware …
Il y a seize ans, le Bitcoin était la seule crypto-monnaie. Aujourd'hui, il existe des milliers de cryptos. Et vous pouvez toutes les miner, sur un Raspberry Pi. Êtes-vous curieux de voir combien de bénéfices vous pouvez réaliser en minant des crypto-monnaies sur un Raspberry Pi ? En résumé: Le minage …
More than 20 years ago, the Open-Source database for PalmOS was born. This site was very popular at the time and then with the advent of smartphones, Palm went bankrupt and PalmOS eventually disappeared. So it's been 10 years that I was wondering if I should keep the database online …
You use Shopify for your Music store? With Shopify Webhooks you can execute code when a specific event occurs on your shop. For example, you can fire a notification when an item is added to a shopping cart, or when a new customer enters its details. The goal is to …
As you may know our beloved Raspberry PI got a nice upgrade with the PI 4B ! You will see in the benchmarks below that our Raspi has really improved on all aspects... So is it worth the upgrade? I compiled the benchmark results I have found around the Net and …
A smartwatch what for? Even if I'm a little geeky on the edges and like to test new Soft or Hardware stuff, I must admit that I've never been tempted to buy a smartwatch, such as the Apple iWatch or Samsung Gear, or any fitness tracker, but this Amazfit Bip …
Vous utilisez Shopfiy pour votre boutique de musique? Comment rendre plus visible votre bouton "Ajouter au panier" et ce sans avoir à installer une nouvelle app? Suivez ce tutoriel et vous pourrez customiser ce bouton comme bon vous semble De nombreux spécialistes de la vente en ligne nous conseillent de …
You use Shopify to sell music products? How to make your "Add to Cart" button more visible without having to install a new app? Follow this tutorial and you can customize this button as you wish Many online sales specialists advise us to highlight this beloved “Add to Cart” button …
A few years ago, in November 2014, I started to audit my Wanscam JW0004 , and found a few interesting vulnerabilities. I was concerned about the security flaws already found and I knew I would find more if time allowed. Other researchers found more, and if you want to see how …
Yes, I've bought this crappy webcam... On paper, it seems to have really nice features, but in reality there are lots of bugs and not everything works as expected. So if you can buy a Foscam instead go for it, but that's not the same price :-) If you're stuck with …
As a penetration tester, sometimes you need to check the password strength of a few Hashes you gathered. Why not using AWS for testing your hashes instead of buying expensive hardware? So, here's my recipie, it's very simple to set up. Follow one of the 'getting-started' tutorials available for Amazon …
In 2009, I tested the computing performance of 'M1 small' EC2 instances. At this time it was the cheapest EC2 instances available, at $0.10 per hour. Now 'T2 Micro' instances are available at only $0.013 per hour. I wanted to test how they compare to the old instances …
You have a cheap hosting at OVH, and you'd like to create apps or page tabs on Facebook? The main issue is that Facebook requires that your app is available on a HTTPS website, with a valid SSL certificate... Fortunately, there's a solution even if your app is on OVH …
I'm currently playing with Amazon Web Services and EC2 , Amazon's highly flexible VPS hosting service. Gandi Hosting is providing a similar Xen based hosting service, and last day I saw that they benchmarked their basic "one share" server with Unixbench and got a score of 40. I was curious to …
Ten years after palmopensource.com , the directory of open source applications for WebOS/PalmOS, I decided to start AOpenSource.com , which is a directory of open source apps for Android and Android programming links. Contrary to PalmOpenSource, AOpenSource will be more "up-to-date" because most links will be automatically updated from …
When I have a new Linux device in my hands, I love running NBench to see the raw CPU power. So I ported the NBench to Android, and you can find it in the Android Market. The benchmark was designed to expose the capabilities of a system's CPU, FPU, memory …
As the webmaster of http://www.palmopensource.com , I try to find more details about the new Palm(tm) Linux based OS: WebOS. Right now, the WebOS SDK is not available to everybody, it should be available in a few weeks, but something interesting has happened: The Palm Pre root …
I'm currently playing with Amazon Web Services and EC2 , Amazon's highly flexible VPS hosting service. Gandi Hosting is providing a similar Xen based hosting service, and last day I saw that they benchmarked their basic "one share" server with Unixbench and got a score of 40. I was curious to …
I've just set-up a new page about some Android experiments: http://www.drolez.com/software/android/ One of my 1st contribution to the Android community is a new rooted ROM for French Dext Owners: DextRootFR I saw the Motoblur 1.3.20 update coming but none of the usual modders …
ZK is my favorite Web 2.0 toolkit. In fact, it's so powerful that I'd call it, a Web 3.0 toolkit. A true Web 3.0 toolkit where you do not have to write a single line of Javascript, which is compatible with all major Web browsers, and which …
The Future is Solar Here is a link to an excellent short article published in theoildrum.com , one of my favorite sites. Read it, I'm sure it will convince you that our future is solar, and that other pseudo-alternatives like bio-diesel should be forgotten ASAP !
How to control servo with cheap AVR micro-controllers? Here is my Open Source PWM / Servo controllers with GPIO and serial interface These modules allow you to control servo motors the same way Pontech.com modules do, but for MUCH less money ! They are based on an Atmel AVR 2313: servo …
Running Linux on the Tungsten T and some hardware information gathered on one page. Booting Linux Many thanks to Nikolay Petukhov ! Thanks to his TT2 kernel , I first booted Linux on my Palm. I downloaded his 'garux_usb.prc' kernel (also here ), took my favorite binary editor to transform the TT2 …
Control a Cybot from your PalmOS based device and SmallBASIC using the servo controller below What you need A Palm , or anything that has a serial port, your dusty HP48 is also perfect for this task, A Cybot with the motor controller board (only first 4 issues of the Eaglemoss …
PalmWac is PalmOS software which will turn your PDA into a Wacom compatible tablet, suitable to be used under XFree, Win9x/XP or other O.S. PalmWac Sourceforge Project Page : For Binaries, source, CVS repository and much more. Below, you'll find basic setup instructions for XFree , Win9x , gpm . Instructions, How …