Replied to 2.0.1: sign-in links by e-mail, remember me, and passkeys you can rename

How does remember me relate to trusted devices? We already let people trust their browser so they skip the second factor. Same thing under…

2 months ago

Replied to Gateway datasheet says the 24 V digital inputs draw a ‘current load’. What does that mean for my sensors?

Before the theory: check the gateway model actually supports what you plan with those inputs. Pulse counting on digital inputs depends on the model,…

2 months, 2 weeks ago

Replied to Old W5100 shields lost their link after we moved to new gigabit switches

Check whether Energy Efficient Ethernet (EEE, "green ethernet") is on for those ports, old PHYs hate it.

5 months ago

Replied to 300 substation monitors: do I really need a separate MQTT topic per device?

That's a lot less work than I'd budgeted. Prototype unit is publishing to v1/telemetry with its own token, site id is now an attribute…

6 months, 2 weeks ago

Started 300 substation monitors: do I really need a separate MQTT topic per device?

Long-time reader, first post. We're replacing a home-grown broker setup with Hermetry for about 300 substation monitors (ESP32-based, our own firmware). In the old…

6 months, 3 weeks ago

Replied to Pushing our own firmware over the air to trackers built on a pre-certified LTE-M module

Keep the private signing key off the build server people log into. HSM or at least a separate box.

1 year ago

Replied to Pushing our own firmware over the air to trackers built on a pre-certified LTE-M module

Which part of the firmware do you change, only your application or anything in the modem's radio settings? And is the antenna the one…

1 year ago

Replied to Logistics founder, not an engineer, learning on the job

Welcome. For the gate sensors, work out the power budget before you write much code. Battery life is what usually kills these projects, not…

1 year, 4 months ago