Some time ago, I ‘discovered’ the NP-Fxxx battery series, which was originally a professional series from Sony, but has become a de facto standard for all photographic accessories and is therefore frequently replicated and offered by third-party suppliers. There are also matching ‘battery plates’ – battery adapters that adapt the connection of an NP-F battery to any format.
Ich habe vor geraumer Zeit die Akku Baureihe NP-Fxxx für mich “entdeckt”, ist ursprünglich eine Profi-Baureihe von Sony gewesen, wurde aber zu einem de-Facto Standard bei allem Fotozubehör und wird dementsprechend fleißig nachgebaut und von Drittanbietern angeboten. Dazu gibt es auch passende “Battery Plates” – Akkuadapter, die den Anschluss eines NP-F Akkus zu jedem beliebigen Format adaptieren.
There’s a long-known issue with the LEGO® Education Spike Essential® batteries that if they are left alone for long enough the hub will stop charging them. You will get a blinking orange light on the hub (instead of solid red indicating charging) and the battery will not be charged.
This is especially annoying as many users find the batteries dead out-of-the-box, meaning that a freshly purchased and just unboxed set cannot be put to use. LEGO used to replace the batteries (and pretend it’s not a widespread problem), but the issue can hit you anytime you leave your battery in the hub for prolonged amount of time and sending the dead battery in isn’t always a viable option (especially if you need it for classes next day).
Continue readingThe orange light means that the hub cannot keep its supply voltage up. There’s a step-up converter that makes 5V out of the battery voltage, the orange light is on if the 5V cannot be reached. This can be due to several reasons:
Welche Sets von LEGO kann man stand heute zum Programmieren lernen nutzen?
Continue readingIf you happen to have a Brother LW-350 or similar Brother Word Processor, the original Floppy that came with your system contained an accompanying Spreadsheet application.
If you lost the disc, it got erased, formatted or otherwise damaged, here is the content of mine:
https://marekmicrosite6926.live-website.com/files/Brother-LW-350/LW-350-Floppy-content.zip
Da man diese Anleitung vom Brother nicht mehr bekommen kann (nicht mal wenn man sehr schön drum bittet), habe ich meine eingescannt und daraus eine saubere, druckbare PDF generiert. Diese Schreibmaschinen sind seit so langem nicht mehr auf dem Markt, dass selbst Brother tut so, als wenn sie nicht von ihnen wären. Ich nehme an, mit der Veröffentlichung dieser Kopie entsteht kein nennenswerter Schaden:
Deutsche Bedienungsanleitung Brother AX-45 (~45MB)
As you can’t get it from Brother, not even if you ask nicely (I did), I have scanned my manual and assembled it into a PDF file ready for (re-)print. As these typewriters were pulled from the market so long ago, that even Brother doesn’t remember them (officially), I think there should not be any issue with publishing this file online:
GERMAN instructions for Brother AX-45 (~45MB)
The Spike Color Sensor is often used for tracking markings on the floor in activities like FLL or WRO challenges. It is important to understand, that the sensor has a certain size of a spot that it watches. To determine exact dimensions of the spot I have built a test rig:
