Hi, I'm Kaustubh.

Business analyst · tinkerer · Sydney

I can't leave a slow, manual, repetitive task alone. At work that means untangling processes until they make sense. At home it means a server cupboard, a drawer full of microcontrollers, and a house that's probably more automated than it needs to be.

Same instinct, two outlets.

By day

Making work make sense

I'm a business analyst. I map how things are done today, work out how they should be done, and get it written down so it sticks. Sometimes that ends in a new system. Often it ends in a simpler process and a well-built SharePoint list — and when it's that kind of fix, I build it myself.

Process optimisation

As-is and to-be mapping, finding the waste, then work instructions and procedures people actually follow.

Requirements & people

Workshops that get to what people really need, and getting different teams to agree on it.

Right-sized fixes

SharePoint, Excel and VBA, Power Apps and Power Automate — whatever's simplest that works.

Lean Six Sigma Green Belt Council for Six Sigma Certification · 2022

After hours

Things I've tinkered with

A home server, a lot of Home Assistant, and the occasional burnt fingertip.

My solar inverter thinks it's phoning home

It's actually talking to a little proxy on my server, which feeds a database and some very satisfying graphs.

MQTT · n8n · InfluxDB · Grafana

The air-cons no longer need the cloud

A thumb-sized ESP32 on the service port, and they're controlled entirely locally.

ESPHome · Home Assistant

Five cameras, one tiny AI chip

Local person and car detection. Along the way I found and fixed a timestamp bug that was breaking two of them.

Frigate · Coral TPU

Remote access, rebuilt three times

Cloudflare Tunnels, then Tailscale, now my own gateway. Each time for a reason that seemed very important at the time.

Pangolin · Traefik · WireGuard

I moved off Google Maps Timeline

Location history now lives on my own server, fed live from Home Assistant.

Dawarich · OwnTracks

The house sends me a morning briefing

Weather, what's on, what broke overnight. Alerts when it matters, silence when it doesn't.

n8n · ntfy

A fan controller with more maths than necessary

ESP32, a temperature probe, PID control and a little touchscreen, to keep a cabinet cool and quiet.

ESP32 · PID · LVGL

I copied every button on a remote

All 17 of them, then built an IR blaster so the house can press them instead.

ESP32 · IR