Raspberry Pi Blog

/Raspberry Pi Blog

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 [...]

By | September 8th, 2019|MQTT, PiCockpit, VerneMQ|Kommentare deaktiviert für Paho MQTT Client (Javascript), Envoy, VerneMQ: debugging disconnects

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 [...]

By | August 23rd, 2019|PiCockpit, Tips & tricks|Kommentare deaktiviert für PiCockpit v.0.11.0 & picockpit-client v0.15.6 released–live pi monitoring!

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 [...]

By | August 17th, 2019|PiCockpit|Kommentare deaktiviert für picockpit.com new version v.0.11.0 is live!

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 [...]

By | August 14th, 2019|PiCockpit|Kommentare deaktiviert für PiCockpit preview: Sensors

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 [...]

By | August 12th, 2019|PiCockpit|Kommentare deaktiviert für PiCockpit showing CPU usage & temperature

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? [...]

By | August 8th, 2019|PiCockpit|Kommentare deaktiviert für PiCockpit: online / offline states, and MQTT

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 [...]

By | August 7th, 2019|PiCockpit|Kommentare deaktiviert für First message from picockpit client rendered!

Booting Alpine Linux on the Raspberry Pi Compute Module

In our project for a client we are using the Raspberry Pi Compute Module, along with a custom compute module carrier board (called the PCCB – Pi Control Carrier Board) which provides RS485, CAN, RS232, LAN, USB and a step-down for input voltages of 6 – 24 V. (If you are interested in customized hardware [...]

By | Juli 7th, 2019|Alpine Linux, Raspberry Pi Embedded Development|Kommentare deaktiviert für Booting Alpine Linux on the Raspberry Pi Compute Module

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.

By | Juni 11th, 2019|Raspberry Pi Blog|Kommentare deaktiviert für LetsTrust TPM SLB 9670VQ2.0 or SLB 9670XQ2.0?

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 [...]

By | April 20th, 2019|Raspberry Pi Blog|Kommentare deaktiviert für Elektronik-Gehäuse & Platinenabmessungen Standards