Studio Zenkai

Bold and Clear, without excess • Kaizen 改善 • With Purpose

Studio Zenkai is dedicated to the craft of programming, hardware hacking, photography, machine learning and how to live sensibly.

Starting an Airbnb vacation home

One year ago, I decided to purchase a waterfront cottage. It would be in the Laurentians aka Quebec’s cottage country. In December and early January 2020, Twitter alerted me to the sanitary situation in China. It was clear it was coming this way.


Aimable D. is a close friend since our engineering school days. Like me, he spent time in the corporate world. But he has also done multiple ventures, from eCommerce to corporate to consumer ventures. Now he is focused on dokomaps, along with Jules, who worked previously with him on other ventures. I am reviewing today Dokomaps to provide feedback, to showcase a good product, but also in the hope that Aimable reviews one of my current ventures, such as OutcomeReference :)

48 Hours Climate Change hackathon

I am participating this weekend in the AI Climate Change Hackathon, and I will jot down here my notes and progress. Here is the event pitch: “Join us along with the other talented and diverse participants, supported by leading mentors in their fields who will come together to collaborate to attempt to address climate change and its impacts on communities and ecosystems. We hope to begin to achieve real positive impact in 48 hours using AI.

Building an autonomous RC car

This is a hands-on article that encourages you to experiment and see what works on the ground. Shameless Promotion: If you are in Montréal, I (@heri) do a meetup where people interested in computer vision, AI, robotics work on autonomous cars. Please drop by! Why a RC car? Like developing an application, my recommendation is to build first a Minimum Viable Product (MVP). Then iterate it quickly from there towards a version that works for you.

All I want for Christmas is a small phone

I got an iPhone 6S Plus a few years ago. I was impressed by the screen, the biggest I’ve had. Look! I can use it as a tablet. Watch videos everywhere, or showcase my latest work at a tech meetup. The dreams shattered in many pieces. I was biking happily, the phone was sticking out of my pocket and crashed to the ground. I bike a lot, hike, run around hilly tracks and never cracked a screen before the iPhone 6S Plus.

Looking again at Microsoft

The natural cycle of companies is to innovate. The flame dies down, then it fights again to innovate. Microsoft is one of those. Win 3.1 was revolutionary, and so was Win 95. With Win 3.1, you could point and click to start programs. With Windows 95, you could install games with a nice GUI instead of typing arduous commands in MS-DOS. No more failures at the video setup or having to find a driver file for your sound card.

Ruby Performance checklist

I shipped many applications, using a variety of frameworks, through my current 1 year challenge or startups. Ruby issues include low performance, such as servers needing more RAM, not able to sustain large traffic, or slow rendering. Since this is a recurring issue, here is a checklist to help developers get their Ruby app faster: Code complexity Ruby’s simplicity and ease of use allows beginners and experienced developers alike to ship features in record time.

Why my next laptop won't be an Apple

Part I - Apple’s Craftmanship I have used the original macbook, the 13” MacBook Air, the 13” Macbook pro, and 15” Macbook pros. I loved the white plastic of the original macbook. It was better than any other computer I’ve used before, worked out of the box, and iMovie amazed me. Drag, drop, and five minutes later, you have a video. I thought this is what computing should be.

Why bots are a thing now

Upon hearing about Facebook and Microsoft efforts to deploy bot platforms, a friend reacted: So bots are a thing now? I programmed bots 20 years ago He is a successful technology entrepreneur and has developed systems on many platforms. I can understand him. There were tutorials in kids’ magazines on writing a “Hello World” bot on MS-DOS 20 years ago. More impressive were the Artificial Intelligence (A.I.) found in games like Warcraft 3 or Command & Conquer.

Becoming a self-taught programmer

In six months I have shipped many apps, as an entrepreneur or as a freelancer. I have also contributed to open source projects and advised other projects. Yet I’m educated as an electrical engineer, not as a software engineer and consider myself largely self-taught in the area of programming. Jeff Atwood : Geeks went from being social outsiders, outcasts, and rejects to.. part of the 1% power structure, with all that implies.


Bonjour! Nous offrons une expertise technique pour un résultat de qualité dans le développement de plateformes transactionnelles, de financement, de médias: Étude et conception fonctionnelle et technique Développement de solutions front, middle ou back-office Développement d’applications iOS ou Android Conduite de projet sur les technologies Ruby, Javascript, Lua, et plateformes mobiles; utilisation de base de données MySQL, Postgresql, ou redis, mongodb, ElasticSearch, Solr Audit de code, de qualité et de performance des applications

Cuda Cores Ranking for Machine learning

NVIDIA graphic cards can be used to accelerate scientific computing, neural networks, video games and occasionally bitcoin computing. Video editing and post-production also benefit greatly from NVIDIA cards with Adobe’s Mercury Engine or BMD’s Davinci resolve. In the case of scientific computing, performance is directly proportional to the number of cuda cores. As long as cpu speed is > 2GHz and you have as much RAM as you have GPU RAM, you are all good.