Author Archive

Another day, another project, another fixup..

Wednesday, January 22nd, 2014

We designed a microcontroller board for a power supply, but somehow we forgot to add the oscillator to the circuit. We thought it was enough to add two nets called 'OSC1' and 'OSC2' to the schematic... Why can't Eagle cope with that automatically?! The lovely photo was taken with an...

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Posted in #liveupdates, Workshop Update | 13 Comments »

Buspirate issues solved?

Friday, December 20th, 2013

Recently the forum is flooded with people that are experiencing troubles with the Buspirate v3.6. Pieter in the forum was no exception. He first tried the Buspirate on his Windows 8.1 and Vista machine and went to the forum after finding out hise buspirate didn't respond to anything. The supportteam in the...

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Posted in BP v3, Bus Pirate | 5 Comments »

Downloadable ShenZhen map for makers

Friday, October 18th, 2013

We are a great fan of Shenzhen and love the wandering round the vast partmarkets of Huaqiangbei, Shenzhen. Ian even decided to leave the cold and windy Netherlands and settle in the Shenzhen area. Two years ago we start our first steps in Huaqiangbei during our first geek tour of Shenzhen, but now...

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Posted in Global Geek, tutorials | 4 Comments »

Testing the new reduced-sized ICSP connector

Monday, December 17th, 2012

This week we received a batch of PCBs and amongst them was the latest revision of our USB TFT breakoutboard. This board is the first board that features a new ICSP footprint, which occupies less space on the PCB and should improve testing and programming times at Seeed. (more…)

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Posted in #liveupdates, demonstrations, Development, manufacturing, programmers, Prototypes, testing | 16 Comments »

Shopping TaoBao: Our first steps

Tuesday, October 2nd, 2012

Some time ago a forum member brought up Taobao as a cheap alternative to eBay. Since we like to shop on a budget, we decided to give it a go. Shopping on Taobao is not as easy as shopping on eBay, and consists of more steps between ordering, and receiving...

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Posted in new parts | 16 Comments »

NEW PROTOTYPE: 1.8″ TFT display with USB interface

Thursday, September 6th, 2012

Like so many others, we found a nice 1.8" TFT display in China, and we decided to make a breakout for it. Instead of just breaking out the pins, and perhaps adding the micro SD card holder, we equipped our version with an USB enabled microcontroller and a few buttons...

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Posted in Prototypes | 15 Comments »

Global Geek Shenzhen: Custom USB flash drives

Thursday, April 19th, 2012

Shenzhen is well known for locally produced and customized technology. From custom cell phones to personalized push buttons, you can find it in Hua Qiang Bei. Sjaak found a building that consists entirely of USB flash disk sellers. There's a huge selection of colorful silicone housing. Just pick one and...

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Posted in Global Geek, USB | 5 Comments »

Global Geek Shenzhen: How not to get lost in the candy store

Thursday, April 19th, 2012

The SEG Market in Shenzhen, and the other markets too, are a maze packed with lots of small shops and goodies. It's hard to find that shop with a special bargain again after you wander away. Below the fold are some tips for finding your way around the markets. (more…)

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Posted in Global Geek, how-to | 4 Comments »

Global Geek Shenzhen: USB microscope

Thursday, April 19th, 2012

We all bought one of these USB microscope at the SEG Market. We were immediately fond of the heavy base and the smooth adjustment of the camera. We bargained a bit and bought it for 260 RMB ($40), that's half the cost of the same thing on eBay from another...

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Posted in Global Geek, testing, tools | 12 Comments »

Maker Faire badges

Tuesday, April 17th, 2012

What all maker faires have in common is that the local hackerspace(s) come up with some kind of badge with a coincell and a blinking LED. In China things aren't much different and we did see a few. This one could be bought as a kit at the Maker Faire...

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Posted in conferences, Global Geek, Hackerspace, Maker Faire | 3 Comments »

Our big box of traveling parts is in the wild

Wednesday, March 28th, 2012

We are constantly developing prototypes, so we end up with a large pile of unused components. When we moved to a new location we realized some components sat untouched since the previous move. A while ago we read about the The Great Internet Migratory Box Of Electronics Junk and decided...

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Posted in components, new parts, parts | 7 Comments »

PROTOTYPE PREVIEW: New protoboard under way

Wednesday, February 22nd, 2012

Don't you hate it? A big bag of SMT parts arrive from Mouser, DigiKey or eBay, but your carefully manufactured PCBs are still under way? Or the firmware needs to be done ASAP? Or you got this super cool USB SOIC uC you'd love to try out and you can't...

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Posted in dev boards, Prototypes | 36 Comments »

Sjaak’s shop-a-holic trip to Akihabara Electric Town

Tuesday, December 13th, 2011

Sjaak stayed a little bit longer in Tokyo and had more time to score some nice parts. As we already said the big plus of shopping in Akihabara is you can actually touch the stuff, but it also has a major downside - you buy too much stuff... Please continue reading...

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Posted in components | 7 Comments »

Itead mystery gift arrives

Sunday, December 11th, 2011

Several weeks ago we posted about an X-Mas giveaway from Iteadstudio. We were surprised to see that it arrived during our stay in Tokyo! As it was shipped like a regular letter, we suspect it blasted past bigger parcels and slipped through quite easily. If you're still waiting for it, and...

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Posted in Free PCBs | 16 Comments »

Itead Studio OpenPCB service: In search of OS PCB part 2

Tuesday, September 6th, 2011

Yesterday we tracked down the designers of two random open source PCBs we received from Itead's OpenPCB service. Today we look at two more PCBs: a reprap board, and one of our own. Itead has a PCB exchange option when you order boards. For 10 cents extra you get 2...

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Posted in Free PCBs, PCBs | 6 Comments »

ITead Studio OpenPCB service: In search of OS PCBs part 1

Monday, September 5th, 2011

Some time ago we reported on Itead's OpenPCB Service. They offer basic PCB prototyping  of 10pcs 5x5cm PCB for $9.90 and 10pcs of 10x10cm for $24.90. For 10 cents extra you can participate in a PCB exchange. 2 extra boards of your design are produced and put into a pool, and you get 2 different...

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Posted in Free PCBs, PCBs | 8 Comments »

How-to: Sjaak hand-solders a DFN chip

Thursday, August 4th, 2011

A couple of days ago we discussed some cute little PIC 12F chips. As promised, here is a post about hand-soldering one. Tools we used: Soldering-iron and hot-air rework station. Curved tweezers. Scalpel or hobby knife. Kapton tape Fine solder (0.5mm thick with rosin core). Flux Coffee or strong drink...

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Posted in DIY, how-to | 20 Comments »

Sjaak explores tiny, powerfull PICs

Monday, August 1st, 2011

In the forum we get questions like 'what PIC should I use' or 'is this the right PIC for my purpose?'. We mostly use big PICs with lots of I/O, plenty RAM, and heaps of Flash. Not because we really need them, but because we are lazy and sloppy coders....

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Posted in PIC | 23 Comments »

WIFI web platform design review

Friday, June 10th, 2011

As promised in the review of the Sure WiFi board , a new WIFI web platform/server design is up for review in the forum. The purpose of this board is to control a digital DSLR camera through a webpage. The device is connected by a 802.11b network, allowing lots of...

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Posted in project logs, web platforms | 6 Comments »

REVIEW: Sure electronics WiFi web server module

Tuesday, April 5th, 2011

We covered Sure's WIFI web server module previously. This board has a MRF24WB0MB wireless module and a PIC24FJ256GB106 with USB (host and slave) capabilities. As a bonus the board also has a mini-sd connector for storing webpages. At a first glance the board looks very clean and well designed with a...

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Posted in Bus Pirate, dev boards, wireless | 37 Comments »

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Recent Comments

  • Geert Jordaens: I'm not sure what kind of licensing I have to add since it is a fairly straight forward implementation of the adaptive Huffman Decoding. For...
  • erich: For anyone interested, I've added some c++ code for adaptive huffman decoding in the git repository.
  • Sjaak: I would add some more protection in the used trigger file (on the serverpilot site) then not using a standard name :) hopefully they use...
  • Pete Castagna: My friend Charlie who worked in synthesizers at a DOD type of place made a modification to this avalanche pulse generator that allowed him to...
  • Sam Catchpole: Yes please :D