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Elias Bakken
Works at Intelligent Agent AS
Attends University of Oslo
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Elias Bakken

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Every labour day I have a beer for breakfast to get my creative juices flowing and to celebrate. But every year only the latter happens.  #labourday #beer #bacon #americanbreakfast  
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Elias Bakken
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Just in time for the Debian Jessie release party and the release of Kernel 4.0 I've finished a beta version of Kamikaze which is what I've named the Debian based distro for Replicape. The aim is to have a turn key BBB image with Redeem, Toggle and Operate which is the new name for the web interface incorporating Octoprint and stuff. There are still some quirks with this, but great if anyone wants to give it a shot and help with debugging the last issues :) 
Kamikaze is a complete Linux distribution based on Debian Jessie (8). It has all the necessary software for running Replicape to control your 3D printer. The way this works is you download a zip file, extract that onto an SD-card and place that SD-card in your BeagleBone Black.
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Elias Bakken

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Go Bro!!!!
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Elias Bakken

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The latest Debian based images are nice! I can feel a slight erection coming on when I am able to install a vanilla 4.0.0-rc5 with Aptitude, but I cannot for the life of me find out how to make the now merged capemgr work! zcat /proc/config.gz | grep OF_OVERLAY reveals a big fat Y! What else is needed? Are overlays still not operational? If not, what can be done about it?
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+Jason Kridner Only usb_gadget in /sys/kernel/config.
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Elias Bakken

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Gearing up for the plumbers conference #breakfast #plumbing #linux #buttcrack with +*​
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+Drew Fustini actually it's a reference to a plumber we had stopping by : )
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Elias Bakken
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There will be a new revision of Replicape coming out in a few months. One of the most important features is a lower price. Because of that we have decided to sell the remaining replicapes at the price we hope to achieve for the new revision. There are only two left in stock, so be quick if you want to get in on that. Here are the suggested changes for the new revision, but feel free to pile on if there is anything you feel is missing :)

http://www.thing-printer.com/product/replicape/

– Lower audible noise (more and better capacitors + Vref filtering + 4 layer PCB)
– Lower EMI noise, hopefully CE/FCC markings
– Enable pin on PWMs
– Decay mode can be in High Z mode on steppers enabling mixed decay.
– 3-pin end stop connectors instead of 2
– 2-pin thermistor inputs to be more compatible with other electronics.
– Polarity protection on VCC input.
– Two of the end stop inputs can function as 5V servo outputs.
– 15 V tolerable end stop inputs enable the use of inductive sensors without voltage divider.

We are also looking for a cheap and effective solution on programmable slew rate on the power mosfets,
but it looks difficult to get this handled.

The lower price will be possible by opting for a 500 unit batch, using some different component suppliers,
lower margin, a cooperation with a Norwegian company helping with PCB production and logistics, and finally handling
RMA in house (cuts about $20 off the price).

We are hoping to have the Kickstarter live some time in May, add to that 30 days for the campaign and some 45 days for
production and delivery. 
This is the award-winning Replicape!!
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Elias Bakken

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So I'm looking to put a cheap ass MSP430Gsomething on a cape I'm making, to implement a custom watchdog. Has anyone seen a GPIO implementation of the Spy-bi-wire protocol? Ideally for BBB, but any implementation would help.
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I didn't realize you were talking only about the chip itself, and not the dev board.
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You might not see it from this picture, but that is Toggle (using SGX) AND Redeem (using the PRUs) running on a Debian Jessie with kernel 4.0.0-rc7 ‪#‎erectionbykernel4point0‬ ‪#‎nerdgasm‬ ‪#‎plumbing‬ ‪#‎nogf‬ ‪#‎livingontheedge‬ ‪#‎fridaynight‬ ‪#‎replicape‬ ‪#‎mangascreen
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+Kumar Abhishek Yes. There seems to be support for the rproc framework in the new kernel, but I've not converted my own code. yet. uio_pruss patches are in +Robert Nelson s linux-dev.
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Elias Bakken

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What is the status of the new Remoteproc driver for interfacing the PRU? I'd rather not convert my complete PRU interface without any documentation other than some dated examples and the kernel source code, but it seems there is no other way to get a kernel with working SGX modules and PRU support. Kernel 3.8 has the old PRU interface, but no SGX. 3.14 seems to be the new LTS kernel and the SGX drivers work fine, but has the remoteproc drivers for interfaceing the PRUs. Does anyone care to pitch in with a working remoteproc "hello world" example for the PRUs?
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I do plan working this summer in addition to the GSoC efforts to port BeagleLogic ( http://github.com/abhishek-kakkar/BeagleLogic ) to the latest kernels. As +Anuj Deshpande said, do join us on #beagle-gsoc at freenode and let's see how it works out
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Elias Bakken

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Is there a way to write new EDID through the HDMI connector on BeagleBone Black? I see that EDID reading is handled by the TDA19988 kernel driver through the NXP chip, but no write_edid function has been implemented (not strange since it is very uncommon to need it). But I don't suppose there is a bypass driver hooking the EEPROM on the HDMI cable into userspace? I know it's a long shot, perhaps +Rob Clark knows since his name is on the TDA19988 kernel driver? :)
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Elias Bakken's profile photoCharles Steinkuehler's profile photoRob Clark's profile photo
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+Charles Steinkuehler I've seen all three cases.. designs where ddc is hooked up to a standard SoC i2c, designs where hdmi block has it's own fully featured/exposed i2c, and designs where hdmi block has some sort of i2c but doesn't expose it generically (ie. more like a "read me the edid" type interface)..  iirc tda998x is in the last category.

But yeah maybe find an hdmi connector somewhere and solder that up to one of am33xx's i2c's and make an edid programmer cape :-P
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Water flow rate research and tooling #debrew 2.0 #v60
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Elias Bakken
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In case you missed it, I'm adding a link to the Review Thomas Sanladerer did on Replicape. He loves the hardware, but feels the firmware is lacking. I agree with him and so getting a working Redeem version 1.0 is a big priority now as well as documenting the features available. 
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Updating the wiki, either thing-printer wiki or the rep-rap wiki would be great!

http://wiki.thing-printer.com/index.php?title=Redeem

http://reprap.org/wiki/Redeem
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People
Have them in circles
267 people
Joseph Chiu's profile photo
Andrew Rutter's profile photo
3DLT.com's profile photo
Karuppanan Natchimuthu Gounder's profile photo
James Pierce's profile photo
Peter Parnes's profile photo
Jenny Kaatz's profile photo
Daniel Norée's profile photo
Jesus Christ's profile photo
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Work
Employment
  • Intelligent Agent AS
    CTO, 2010 - present
Education
  • University of Oslo
    Nano electronics, 2003 - present