Engineering insights

Notes from the field.

What we learned building and running IoT systems in Mongolia: the decisions, the mistakes, and the numbers.

2026-06-15

eBarimt and unattended sales: what imported machines can't do

Every sale in Mongolia must produce a registered tax receipt. What that means when no cashier is present, and why imported vending machines need local engineering.

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2026-04-08

Fixing a remote station overnight: why OTA is non-negotiable

When a firmware bug appears at a remote site: two days by road, or minutes over the air. Why OTA and store-and-forward are non-negotiable for remote IoT.

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2026-02-10

Charging below zero: how field stations survive the Mongolian winter

Charging a lithium battery below 0°C damages it permanently. Here is how we design field stations that survive winters at −40°C.

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