TuxCon 2019 soldering workshop kits are now on our web for sale

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The soldering workshop this year was for Open Source Hardware Universal Remote Control board using SMT components.

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All files for this kit are at GitHub including hardware, software sources and Assembly instructions. For these who didn’t manage to participate, now the kit is on our web for sale: URC

This year we had massive participation of kids from 4 to 12 years old.

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As the SMT components are bit odd to solder we prepared for them FOSDEM-85 kits with PTH components.

We were a bit concerned if they will not get burned by the soldering irons, but they surprised us as they were so precise and careful that all boards they soldered worked 100% from the very first time.

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Just for comparison when we do soldering workshops with adults from 20 up to 70 years old about 10% of the soldered boards do not start due to problems with misplaced components or bad soldering and we have to help them to fix. So it appears kids do solder better than adults 🙂

The Minibot kits from TuxCon 2018 soldering workshop are also on the web now.

It was wonderful weekend with lot of fun.

New Robotics and CNC products in stock

ROBOT-GRIP

We have now in stock many new Robotics and CNC components:

KITS:

ROBOT-2WDL-KIT Robot platform with two motors with wheels and encoders

KIT

ROBOT-LINE-FOLLOW Robot platform with analogue line follower

ROBOT-LINE-FOLLOW

 

Micro motors:

MOTOR-200806 12000 rpm brush motor working at 3-6VDC

MOTOR-200806a

MOTOR-F1607 small drone motor with fan working on 3-6VDC and speed up to 50 000 rpm

MOTOR-F1607

VIBRATING-MOTOR-3X8 small vibrating motor only 3×8 mm size! you can use it to build small bug robot 🙂

VIBRATING-MOTOR-3X8.jpg

 

Stepper motors:

SM-17HS4023 Stepper motor for CNC XY table or 3D printer 42x42x23mm

SM-17HS4023-1

SM-42HB34F08AB Stepper motor for CNC XY table or 3D printer 42x42x34mm

42HB34F08AB

SM-5VDC-DRV Stepper motor with 1:64 gear and driver!

SM-5VDC-DRV

SM-60SL Stepper motor with 48 mm screw

SM-60SL

Robot hand:

ROBOT-GRIP Robot hand which works together with servo motor to open and close

ROBOT-GRIP

Gear motors:

MG-12V-M4X55 Gear motor with M4x55mm screw can be used for small CNC table or Door lock/unlock mechanism.

MG-12V-M4X55

MG-6V-1-380 Very compact Gear motor 6VDC 30 RPM can be used for blinder open, close

MG-6V-1:380

CARDAN-5X8 and CARDAN-5X5 Free joint for Boat fan or blinders open/close

CARDAN

Linear guides:

LINEAR-GUIDE-400MM Linear slide with 400 mm length

MGN12L400

SCREW-T8X8-300MM Trapeziodal screw with brass nut 300 mm

SCREW-T8X8

Shaft support:

SK8, SK10

SK08

SHF8, SHF10, SHF12

SHF12

Wide range of Micro Bearings

604UU

GT2 Pulleys and Belts:

GT2-BELT200-6MM

GT2-5T60-6MM

Aluminum frame corners for 20×20 , 30×30 and 40×40 profiles:

ALU-L

 

Strong neodymium magnets 30x10x3 and 10x10x10:

MAGNET-30x10x3

ESP32-WROVER-KIT is back in stock

esp32-wrover-kit

The popular ESP32-WROVER-KIT is back in stock!

 

EDIT: The new batch has ESP32-WROVER module on it:

ESP32-Wrover-2

Instead of CH340 USB to Serial now it have FT2232HL wich implements two Serial channels one for programming one for debugging.

Also as these were assembled end of May they contain WROVER modules with 4MB of RAM and ESP32 chip REV.1.

nsmail

 

Open Fest 2016 – Soldering of the Open Source Hardware GHOST

“A ghost is haunting Europe—the ghost of communism.” said Carl Marx in 1848

We can re-phrase “A Ghost is haunting OpenFest 2016 – the ghost of open source hardware” 😀

We created this Soldering Kit specially for Open Fest as third year in a row we do soldering workshops there:

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It’s a very simple board, specially made for novices with small PIC10F206 microcontroller which has only 512 words of Flash memory and 24 bytes of RAM, still enough to write C code like this.

In the good Olimex traditions being overwhelmed with work we totally forgot for the soldering workshop and started the project 3 weeks before OpenFest 🙂

The board was quickly routed with KiCAD and we sent to PCB manufacturer in China, who keep the promise to make the blank PCBs for 1 week and shipped on time but DHL late with the customs clearance and we got the board Friday morning! The workshop was Saturday and Sunday, right on time!

Then we had half Friday fun with Microchip’s MPLABX tools, which refused to re-program the PIC10F206 once it’s programmed.

After few hours we found that MPLABX version 3.35 can program and erase PIC10F206 just fine but MPLABX 3.45 don’t.

Still there was enough time till 20.00 o’clock and we managed to program 200 kits ready for soldering next day 🙂

The initial intention was to make LED breathe but after losing so much time with MPLABX we decided the first version to be simple 10 times blink!

Here you can see people assembling it on OpenFest:

openfest

Girls, Boys, Kids all were not afraid and took the soldering irons:

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openfest3

After OpenFest we continued to investigate why the newer MPLABX refused to program PIC10F206 more than once, the problem was trivial, to erase it the Vcc must be above 4.5V:

voltage-configuration

Still interesting why MPLABX 3.35 was erasing it even without this voltage settings 🙂

This is why working with embedded systems is such fun. You never know where you can step aside and you have to worry not just for the code but also for the hardware as source of mistakes.

Needless to say we had no any assembly instructions for the kit at OpenFest, but now proudly we put them on the web site of the kit.

 

Prusa i3 the leader among the non professional 3D printers is in stock

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Few months ago I was interested to try how 3D printers work. I googled a bit and I found thousands of variations online.

Even there is site which compare them here: http://www.3ders.org/pricecompare/3dprinters/

As I just wanted to play a bit making frames for our LCDs and Box prototypes for OLinuXino and had no intention to do any production with this printer I wanted to get something as cheap as possible so even if I break it during the assembly to not regret much.

I check all these super duper $140-300 range printers trying to order online and found that all of them are either “out of stock” either “give me the money upfront” and wait XX months until I attempt to produce it either my printer is $300 but shipping to Bulgaria is $400 so none of these was acceptable.

I soon realized most of these sub $300 were just vapour-ware and if you really want to buy something in stock it goes close to $700-800.

Finally I found Jelwek in Poland, which was accepting Paypal, I selected the medium printer they have and cost EUR 475 + shipping to Bulgaria by courier (which I found is normal post later) EUR 25 and ordered one. After about a month the kit arrived by post.

There are lot of documents how to assembly Prusa i3 on the net. For Jelwek this is shown here: https://www.flickr.com/photos/105048182@N02/sets/72157642944311244/

When the kit arrived I was a bit disappointed, the quality of the used parts was a bit low, three of the steppers were second hand, disassembled from old machines which was seen from the scratches and the cable cuts just the one for the extruder was new one.

All rods and shafts were cut by hand with not clean cuts and with lot of whiskers on the edges. Anyway when assembled the printer ran without problems, I already blogged about it here.

Many friends asked me about this printer after I blogged – they wanted also something cheap to start with 3D printing, so I asked our Chinese agent to try to locate low cost Prusa i3 clone and he sent me sample.
The kit arrived and here how it looks:

kit1 kit2 kit3
It’s seen that these kits are done by professional manufacturer – all motors are new and the shafts are directly coupled, you even get tools necessary for the assembly of mechanics like cutters, heat-resistant Kapton tape etc. which I had to supply additionally for the Polish kit I got first. The PCB is also all-in-one with integrated Arduino and drivers on same PCB. There is fan to cool the material exiting the extruder.
So after we inspected everything we decided to stock it, here how it looks assembled:

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Now these kits are in our stock.

Note these are not assembled and require knowledge both in mechanics and electronics to make them work. Sure the final result is worth the efforts, it’s a great pleasure to see something working which you built with your own hands 🙂

New Product in stock: LCD 7″ FRAME KIT for panel assembly

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LCD7-FRAMEKIT is plastic frame with four clamps which allow A13-LCD7″ and A13-LCD7″TS to be assembled to flat surface. It consist of one plastic frame, four clamps which could be placed on any place on the edge of the frame and four screws which attach the clamps to the frame.

Now you can use this frame set to attach the LCD to any flat surface see how it will look from the back:

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with 4 more screws you screw the clamps to the surface and your LCD is mounted.