Author: Jude Pereira
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Building Jupiter: Security Sandboxing Ideas
A few ideas about security sandboxing your AI agents, so that you don’t wake up to a rogue agent one fine day.
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Building Jupiter: Why I Decided To Build My Own Agentic IDE
A short story about why I decided to build Jupiter, a model agnostic, secure and self hosted agentic IDE.
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When to Delegate Work to a Virtual Engineer
With rapid advances in the field of engineering, when should you delegate work to a virtual engineer? Furthermore, what is a virtual engineer?
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Upgrading to Debian Bookworm on QNAP TS-112 (also TS-11x/TS-12x)
I decided to host Minio on a QNAP TS-112 device, bought from a second hand store. Here’s a tale of me ditching the QNAP OS in favour of Debian Bookworm.
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The “Are you sure?” ChatGPT Hack
The more I use ChatGPT, the more I tend to learn about its intricacies and nuances. One of my latest discoveries is the “Are you sure?” hack: Yet another example: Both chats were with 4o. What’s the take away? Make ChatGPT second guess itself, until it arrives at a concrete answer. Lastly, always double check…
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Colima & Cloudflare Zero Trust on Apple Silicon
Install Colima via Homebrew: Add the Cloudflare Certificate Get inside the VM that Colima spawns: Download the Cloudflare Zero Trust certificate: In the terminal UI that shows up, press enter until the “More” prompt goes away, then ensure that cloudflare.crt is listed in that list. Once verified, trust all the certificates by giving in a…
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Remapping § to ~ + brightness keys from macOS Sonoma 14.3.1
A year ago, I wrote about bringing the UK keyboard layout closer to the US one on my M2 Air here, however, that suddenly stopped working. While attempting to run the command involved by hand, I realised that it had to be executed as root. Apple updated macOS such that those special keys couldn’t be…
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KISS: Hand crafted JSON is NOT faster than ObjectMapper
Premature optimisations are evil. Apart from being buggy, they might actually be slower than the industry standard.
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Mac M1/M2: Keyboard Brightness Keys + Remap § to ~
Remap the section key to the tilde key, and bring back the keyboard brightness keys to the MacBook M1/M2 machines.
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Cloudflare Zero Trust Gateway and Net Neutrality
Is Cloudflare ruining the entire concept of a distributed internet? Is it on a path to violate Net Neutrality? What can you do to prevent this?
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Getting the AWS CLI to accept Cloudflare WARP’s root certificate
Download, convert, and install the Cloudflare WARP root certificate into your local set of trusted root CAs, and then tell the AWS CLI to use it.
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Lessons learnt from ESP NOW
| hardwareFor those of you who aren’t aware of ESP NOW, it’s a communication protocol developed by Espressif for their ESP modules. What began as a simple “hook up my plant lights to HomeKit”, turned into a massive home grown firmware, but more about that in another post. I’ve successfully setup a bunch of ESP 8266…
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Taming a throttled API with Dynamic Proxies in Java
Recently, at CleverTap, we’ve begun migrating some of our largest clusters to a new protocol (for starters, think ~115 instances at a time). One of the most fun things I’ve had my hands on during this migration was the AWS Systems Manager API. When we scaled up our migrations gradually from a 10 node cluster,…
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Sending OTA updates over WiFi to your ESP8266
This Christmas, I added a whole bunch of lights powered by 5V power sources. My goal was to switch them on at sunset, and switch them off on sunrise, by using a MOSFET for power control :) While I was doing this, I wanted to send OTA updates of my Lua files to the ESP8266…
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nRF52840 – CircuitPython 5.0.0 pinout
| hardwareI recently got CircuitPython running on my SparkFun nRF52840 Pro Mini. Compared to what SparkFun says the pin mappings should be, I found them to be quite different. Perhaps they changed with CircuitPython 5.0.0? Here’s what the pin mapping looks like, when superimposed over SparkFun’s pinout diagram: Sources: https://learn.sparkfun.com/tutorials/nrf52840-development-with-arduino-and-circuitpython https://github.com/adafruit/circuitpython/blob/0f003ac5b8312fafb120e86e05eefd2431014d8c/ports/nrf/boards/sparkfun_nrf52840_mini/pins.c