Blogartikel, Anleitungen und Tipps rund um den Raspberry Pi Singleboard Computer und verwandte Themen.
We will post information about the Raspberry Pi SBC and related topics, like Arduino, Making, Embedded Development, etc.
Paho MQTT Client (Javascript), Envoy, VerneMQ: debugging disconnects
After deploying picockpit to my server, a bug was observed: the web frontend would disconnect in very regular intervals. This had not been present on the local development environment. Users of picockpit reported the same bug. I have debugged it today, and applied a hotfix. It turns out it was a timing issue. TL;DR how [...]
PiCockpit v.0.11.0 & picockpit-client v0.15.6 released–live pi monitoring!
Freshly released for you – now picockpit.com offers you a possibility to monitor up to 5 Pis from everywhere on this planet (with an Internet connection) for free!This is how it looks like:The data (under the heartbeat button) is updated live, currently every second. How do I start monitoring my Pis for free?Step 1: Sign [...]
picockpit.com new version v.0.11.0 is live!
This new version of picockpit.com supports live streaming of MQTT measurement data from your Pi to your webinterface (desktop or mobile). By clicking on the info icon, you can see the public and private IPs, the serial number and the Pi model:The online state of the Pi is displayed with the online badge.Currently there seems [...]
PiCockpit preview: Sensors
PreviewThis is in the upcoming version of PiCockpit:All these values are updated live (currently each second) using MQTT messages to PiCockpit. The value for Root partition total available is static, as it is the total size of the root partition.Some values are rendered in a prettier (but less precise) view in the overview:To access this [...]
PiCockpit showing CPU usage & temperature
The CPU information is updated live in your webinterface. No matter where your Pi will be in the world, if it has an Internet connection and can talk to the PiCockpit MQTT Broker, you will be able to monitor it.CPU Loaded with two hogs:The 51 % refers to overall system load – that is, if [...]
PiCockpit: online / offline states, and MQTT
In the upcoming PiCockpit release, we will have an online status tracking for Pi’s connected via picockpit-client. The online function is realized by MQTT’s Last Will & Testament feature. You can test it by unplugging your Pi from the network. I unplugged the Pi at: 17:59:10At about 18:00:05 it was shown as offline:Why is that? [...]
First message from picockpit client rendered!
Today, 7.8.2019, at around 18:16 the code is in place for the first message to have been rendered: Thus the Pi “Alexander” is shown as online. Thanks to the magic of vue.js, MQTT, VerneMQ, AdminLTE, Crystal Lang, Python, Paho, AXIOS and much much more!This is the effort of around 320 hours of work (total time invested [...]
LetsTrust TPM SLB 9670VQ2.0 or SLB 9670XQ2.0?
A customer approached us about the difference between SLB 9670VQ2.0 and SLB 9670XQ2.0.VQ has a standard temperature range of (-20 .. +85°C), and XQ is the enhanced temperature range version (-40 .. + 85°C).As the Raspberry Pi itself has a standard temperature range, we use the VQ version on the LetsTrust TPM.
Elektronik-Gehäuse & Platinenabmessungen Standards
Abmessungen Raspberry PiEin Raspberry Pi 3B+ hat, als Vergleich, die Abmessungen: 85 mm x 56 mm für die Basisplatine. (USB & LAN, sowie andere Stecker ragen teilweise über die Platine hinaus). Hutschiene / DIN-SchieneHutschiene: TS35, U-förmiges Profil. Standarisierte Befestigungsschiene für Gehäuse, Racks, Schaltschränke, u.s.w. Sie wird vielfach in der Industrie eingesetzt. Einer der ersten Einsatzzwecke [...]