Olimex olimexino 32U4 Arduino Leonardo clone

I received a parcel from Olimex today with few Olimexino 32U4 Arduino Leonardo clone boards. I got a few as a sample for a possible client work mainly because of the advertised ‘better’ hardware design over the Arduino Leonardo.

However when more closely inspecting the boards I saw a ball of solder short-circuiting two pins in the processor… Have to say I am not too happy to see something like this =(

I’ll have to check the other boards more closely before attempting to use them. They might work with this kind of shoddy soldering but why take the risk.

Olimexino 32U4
Olimexino 32U4
Olimexino 32U4
Olimexino 32U4 with ball of solder short circuiting the processor

Some features from Olimex product page

  • ATMEGA32U4 microcontroller, all in one USB communication no need for external FTDI chip.
  • Input power supply 7-12VDC
  • ULTRA LOW POWER voltage regulators
  • Li-Ion rechargeable battery power supply option with a BUILT-IN on board charger
  • Works both on 3.3V and on 5V, 3.3V and 5V shields can be used
  • NOISE IMMUNE design
  • All of the components are LOWER than the connectors
  • A Mini USB connector

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

Read more

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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