Engineering Notes

Field notes from building DDOGreen and SimItNow — design decisions, trade-offs, and the mistakes that taught us the most.

Power Management August 17, 2026

How DDOGreen Decides When to Save Power

Inside the dual-threshold hysteresis that keeps a power daemon from flapping between modes — and why it refuses to ship default values.

EV Charging August 17, 2026

Connector mapping, charging-profile priority, offline authorisation, and the reconnect loop that quietly took down a fleet.

Product Update August 25, 2026

Why our OCPP charge point simulator has a new name and a new home at www.simitnow.com, and what stays the same.

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