second-brainclaudeai-agents
How I promoted my AI from chatbot to chief of staff
I gave my AI a name, a memory, and a set of rules. Here's what I built, and why it stopped feeling like a tool.
Mar 9, 20269 min read
PieterBrinkman.com
Working notes on AI, automation & what actually sticks.
How I actually use AI every day — systems, agents, and the honest failures in between.
Featured
Latest
2025 Guide: Getting Started with ESPHome Device Builder in Home Assistant
Learn how to install and use the ESPHome Device Builder add-on in Home Assistant to flash and manage your ESP32 and ESP8266 devices.
Jan 29, 20256 min readESPHome
Next.js Conf presentation online
Last week I presented at one of the largest developer conferences in the world; Next.js Conf. The video is now available on Youtube.…
Oct 31, 20221 min readPublic Speaking
SUGCON keynote recording available
The recordings of the SUGCON event are now available including the keynote that Jason and I delivered on Friday morning.…
Jun 2, 20221 min readComposable DXP
Architecture guide to migrate from On-prem/PaaS to SaaS
Composable DXP is all the rage. Why is the industry moving towards SaaS and Composable architecture? What are the benefits of composable for customers? And…
May 16, 20221 min readComposable DXP
Sharing my updates on Polywork
A lot of activities around my job and hobbies are not easy to share. I don't like sharing too much activities on LinkedIn and I don't want to write an…
Mar 11, 20221 min readPortfolio
Build a cheap water usage sensor using ESPhome and a proximity sensor
This article will provide you with a walkthrough on how you can build a water usage meter sensor that integrates with your Home Assistant for under 10 $/EURO…
Feb 2, 202211 min readESPHome
Make your city heating (stadsverwarming) smart and connect it Home Assistant energy dashboard
Some places in the Netherlands have city heating. The intention is to reuse warmth from industry to heat your houses and get warm water. In theory this is a…
Feb 1, 20229 min readHome Assistant
How to access the Align command with keyboard shortcuts in PowerPoint
I make a lot of presentations using PowerPoint and I'm also on the receiving end of a lot of presentation. I truly believe that a good presentations is not…
Jan 13, 20223 min readDaily Tip
2022 update: Flash ESPhome on ESP32 ESP2866 NodeMCU board
UPDATE January 2026: This article is now outdated. ESPHome has introduced the new ESPHome Device Builder with a simplified workflow. Read the 2026 Guide:…
Jan 1, 20226 min readESPHome
Guest speaker Sitecore Strategy Lunch
I've been invited to participate in Sitecore Strategy lunch of December. The strategy lunch is a informal table discussion. I will be talking about…
Nov 22, 20211 min readComposable DXP
