Olimex A20 OLinuXino MICRO board first boot

I have been scouting for a suitable SBC for some client work and came across Olimex A20 OLinuXino MICRO. The board is a bit pricey (55€) but does pack some serious punch.

Getting the board to boot was a bit more complicated compared to – say a Raspberry Pi, but was completed after carefully reading the manual (RTFM does work).

Some findings which may help someone – these apply for Linux image which can be downloaded from the Olimex website

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Super interesting Raspberry Pi clone discontinued

I have followed this Raspberry Pi clone for a while now, the form factor is awesome and you can use LiPo cell to power it. Super! Already ordered a few samples for a mobile project and eagerly waiting for them to arrive.

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From the product pages

ODROID-W

ODROID-W is a miniature computing module which is fully compatible with all software available for the Raspberry-Pi.The W stands for:

    • Wearable device development
    • Widely applicable Internet of Things (IoT) development
    • Workable DIY electronics prototyping

Too bad they have decided to discontinue it after the initial batch. Nothing to reveal the reason behind this decision, just a short announcement in product page.

EDIT: the announcement has changed

Not recommended for new designs. Broadcom informed us that they will not accept our order of the BCM2835 SoC anymore.
When the first trial batch is sold out, you can’t buy the ODROID-W anymore.
Sorry for the inconvenience.

This is really bad news – does raspberry pi foundation feel their IPR violated? Why would Broadcom deny to sell their chips to any interested party?

link to Odroid product page: http://www.hardkernel.com/main/products/prdt_info.php?g_code=G140610189490

199€ 3D printer challenge – stepper motors arrived

The parts sourcing for the 3D printer challenge is almost complete – the stepper motors arrived today! In fact I ordered A batch from China two weeks ago but they have not yet arrived – so I checked the prices from Watterott and they were really reasonable. Only downside is postage which is usually free when ordering from China.

I was pleasantly surprised to find put that the motors have a D-shaft and are the same Pololu steppers sold elsewhere with a much higher price tag.

Price: 13€ a piece

 

longer leads would be nice
longer leads would be nice
stepper motor - brown paper bags
stepper motor – brown paper bags
stepper motor - brown paper bags
stepper motor – brown paper bags
these are pololu steppers
these are pololu steppers
another angle
another angle

199€ 3D printer challenge – RAMPS 1.4 and display arrived

The 3D printer challenge is coming together quite nicely – today the RAMPS 1.4 controller board and the display board arrived in the same package.

RAMPS 1.4 board was nicely packaged in a cardboard box – only negative thing was the power transistor leads which were left uncut and would most probably have short-circuited the Arduino MEGA. Also the solder job looks a bit shady – well what would you expect for 9€ worth of electronics =)

The display / controller board looks OK to me – it came with an adapter for RAMPS 1.4 board so connecting is a breeze.

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Challenge – create a 3D printer under 199€

I have been playing with my ultimaker for a while now and have been very happy with it. However it costs an arm and a leg and costruction is quite demanding (my kit with dual extruder and ulticontroller was 1299€).

I decided to try to push a working 3D printer price as low as possible with the following design goals

o as cheap as possible – cut every corner =)
o price under $199
o 0.1mm resolution
o DIY – easy
o 3mm filament
o bowden extruder
o heated bed
o stand alone printing
o 20x20x20 cm build volume
o all non-metal parts 3D printable

It will be built on top of RepRap Mendel with some modifications to keep costs low.

More to follow…

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