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The last of the beta tester boards for Replicape Revision B were shipped out today! Now comes a couple of weeks of testing for the selected testers followed by a big decision: Are they good enough for the Kickstarter! If the testers give the board their go, that is to say they have not found…
For BeagleBone Black the cape manager has been missing or somewhat broken since 3-odd-8 or something, but with Linux kernel 4.1, it’s back in business (a part of mainline kernel)! That means you no longer have to recompile the whole device tree in order to enable or disable an IP core slash peripheral, instead you…
One of the key elements of electronics design beyond the elementary workings of the circuits is the thermal management and the EMC (Electro Magnetic Compatibility). On a 3D-printer controller board, the MOSFETs tend to be one of the major contributors to both the EMC part as well as the thermal management part. For Replicape Rev…
Kamikaze is a Debian-based eMMC flasher image for BeagleBone Black. It is a complete solution for Replicape and Manga-Screen aiming to contain all software needed to slice a model and print it without installing any additional software. And it has now been updated! The latest image has an updated Octoprint 1.2 which now has CuraEngine…
With the new revision of Replicape, I had to do some voodoo with the electronics in order to reach the new target price. Perhaps the most important change was the removal of the Digital to Analog Converter (DAC) that was used for setting the current limit of the stepper motor controllers digitally. Instead, five of…
So I’ve recently started working on a new major revision of Replicape, rev B! And boy is it major in many ways! First of all, the stepper drivers are brand new, I’m going for the TMC2100 which have gotten a lot of buzz lately because of their many configurations for lower noise. Don’t believe the…
CircuitCo just sent the shipment notification for 48 shiny new Replicapes, so they will be in store in a couple of days! With this batch we’ll also offer FedEx shipping at 70% discount. In other news, Octoprint 1.1.0 was recently pushed to master and I’ve update the package feed with the latest changes. The most…
The last weeks have been spend making a new BeagleBone Black flasher image, one with an updated kernel, the latest Redeem and a whole lot of graphics goodies. The image with instructions can be found here. The most important changes from the last image is the native path planner in Redeem. Mathieu Monney has done…
I’ve been working hard on a project lately called Debrew that adds a web interface to a CNC controller. I decided to go for Lighttpd as the web server, Web.py as the Python framework, and sqlite3 as the data base engine. Here is how I did it. I’m going to write up the whole project…
Last week was spent fine-tuning the endstop behaviour. With normal cartesian printers, triggering an endstop should cause the stepper motor to only be able to turn the other way. For H-belt, coreXY and Delta printers, the problem becomes a bit more complicated. Consider the case of H-belt where triggering the X min endstop should allow…
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