Replied to Customer IT refuses any port forwarding at the substation: does Edge need inbound access at all?

A VPN is exactly the conversation I'm trying to avoid. Their security team treats any tunnel into their network as a new project with…

1 day, 1 hour ago

Started Customer IT refuses any port forwarding at the substation: does Edge need inbound access at all?

Quick sanity check before I go back into a meeting with a utility customer's IT people. Site is a small substation building: 14 Modbus…

3 days, 14 hours ago

Replied to ESP32-WROOM vs WROVER vs MINI: what do the module names mean and which do I buy?

+1 to Grace. We lost a week on a site job because of a PCB antenna inside a steel cabinet.

2 weeks, 2 days ago

Replied to Yard sensors at the edge of Wi-Fi: why does it get so slow, and what do I do about it?

Also those slow clients eat airtime for everyone on that AP. A frame at 1 Mbps occupies the channel for a long time.

2 weeks, 4 days ago

Replied to Uno resets every time my Pi script opens /dev/ttyUSB0

Easiest fix: don't restart the script. Run it as a systemd service with Restart=always, open the port once and never close it.

1 month ago

Replied to USBasp on a Mac won’t see my ATmega328P boards: “could not find USB device”

Adapter it was. System Information showed nothing through my no-name USB-C dongle; through a powered hub it shows "USBasp" and avrdude finds it. Flashed…

1 month, 1 week ago

Replied to Night-time bed-exit alert for a care home: which sensor, and how do I only alert between 22:00 and 06:00?

For the sensor: an FSR strip under the mattress works but needs calibrating per mattress and drifts as the foam ages. Load cells under…

1 month, 1 week ago

Replied to Copied firmware from our US plant, devices in the UK plant get “bad username or password”

Good catch. Worth putting the host in a config file instead of the build, so the next plant doesn't copy a hardcoded host.

1 month, 3 weeks ago