Posts Tagged ‘pcb’

UCload: revisited

Monday, April 4th, 2016

Sjaak has posted an update on his uC controlled dummy load project we covered previously: I finally found some time to check out the UCload project. A couple of weeks ago I quickly soldered the PCB and wrote a quick’n’dirty firmware for it. The basic functionality was working, but it...

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Posted in project logs | 6 Comments »

1″ 100W hot-plate for SMT reflow

Tuesday, March 29th, 2016

kevinhub88 over at the Black Mesa Labs writes: Black Mesa Labs has been using a $20 hot plate for a year now for soldering QFN ICs to PCBs. Only issue so far has been the size ( 10″x10″x3″ ) and thermal mass of the thing as it consumes precious microscope work area...

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Posted in Arduino | 3 Comments »

Bus Pirate v3.8 free PCB build

Monday, March 28th, 2016

Hector built a free Bus Pirate v3.8 PCB.  The Bus Pirate is an open source hacker multi-tool that talks to electronic stuff. If you build a free PCB we’ll send you another one! Blog about it, post a picture on Flicker, whatever – we’ll send you a coupon code for the...

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Posted in builds | No Comments »

Having cheap PCB’s made, part 2

Friday, March 25th, 2016

Batches of PCBs from Ivo of The first batch was a new run of the LivingColors Arduino shield. The second batch was a breakout board for the NiceRF SX1276 LoRa module. Here I experimented a little with contour routing. The third batch was an adapter board to use no-name CC2500...

Posted in PCBs | 1 Comment »

Things to avoid when sending PCBs to the fab house

Friday, February 26th, 2016

Sjaak shared some tips when sending PCBs to the fab house: I usually collect a few PCB designs before sending them off to the PCB fabhouse. I prefer to use as I know Ian from for a long time and think he provides good quality, and fast turn...

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Posted in PCBs, techniques | 10 Comments »

Crystal Ladder filter

Monday, February 8th, 2016

Dan Watson writes: Here's a little board for making a four pole crystal ladder filter. This type of filter has a very high Q and narrow bandwidth, allowing you to select a specific frequency from your signal. Because of the narrow bandwidth, selection of the capacitors and tuning of the...

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Posted in PCBs | 2 Comments »

App note: Thermal behavior of small-signal discretes on multilayer PCBs

Sunday, January 31st, 2016

App note from NXP Semiconductors about multilayer PCB as additional heatsink for flat SMD components mostly power transistors to dissipate heat. Link here (PDF) This application note illustrates how to improve the power dissipation of discrete components by using multilayer PCBs. It focuses on the impact of using larger copper...

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Posted in app notes | No Comments »

App note: Design considerations for mixed-signal, How to design a PCB layout

Sunday, January 3rd, 2016

Another application note from e2v, this time about PCB design involving mixed-signal (Analog and Digital) components. Link here (PDF) This application note aims at providing you with some recommendations to achieve improved performance. The initial assumptions are the following: • Proper grounding and routing of all signals is essential to...

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Over the top UCload

Wednesday, December 30th, 2015

Sjaak has published a new build, uC controlled dummy load: I'm mostly a digital guy, but I'm wanting to design my own power supply. If I'm wanting to test that i need a dummy load. I got inspired by the re:load ( ). I added a microcontroller, rotary switch, external...

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Posted in project logs | No Comments »

Making PCB vias with conductive ink

Monday, November 23rd, 2015

Here's an alternative method for making PCB vias using conductive ink from Diyouware: We developed an alternative method for making PCB vias through-hole using our robot. As you probably know the traditional DIY method consists in threading a wire through the holes and then soldering it and then cutting it off. For example, if...

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Posted in PCBs, tutorials | No Comments »

PCB inspection stand for Chinese magnifier

Monday, November 16th, 2015

Tom Keddie writes, "On the last hacker camp I picked up a magnifier with HDMI output on Taobao (or more expensive but no airfare needed 14MP HDMI HD Microscope USB Industrial Camera 180X C mount Lens Stereo Stand) I find myself needing to peer into and under packages a lot,...

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Posted in tools | No Comments »

App note: Passives aren’t really So Passive: PCB

Sunday, October 11th, 2015

The last part of “Passives aren’t really so passive” series app notes from Maxim Integrated discusses about PCB flaws that can lead to passive errors to IC performance. Link here (PDF) Active components like transistors and integrated circuits change signals using energy from the power supply. However, passive components like...

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Making a PCB business card

Tuesday, September 29th, 2015

Ilia Baranov has designed a reference business card: Back of card includes: Ruler in both 1/10" and mm. AWG Hole size gauge (not super accurate due to plating, but that is unavoidable) Resistor/capacitor/inductor/diode sizes Common surface mount component sizes Common electrical symbols and shortcuts/equations Common conversions Trace size comparison Quote from...

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Posted in, PCBs | No Comments »

USB Infrared Toy free PCB build

Thursday, September 3rd, 2015

Kuba Tyszko built a free USB IR Toy PCB. With the USB IR Toy you can use a remote control with your computer, view infrared signals on a logic analyzer, capture and replay remote control buttons. If you build a free PCB we’ll send you another one! Blog about it,...

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Posted in builds | No Comments »

EAGLE BOM generation script

Tuesday, June 30th, 2015

Dilshan Jayakody writes: This is a quick post about EAGLE parts list generation script which I was written to replace existing "part2html.ulp". This script generates more organized and detailed BOM HTML file and it can directly replace "part2html.ulp". This script is tested with EAGLE 6.6.0, but it can also work...

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Posted in Eagle | 1 Comment »

RFM26W Breakout Board – First DirtyPCB manufacturing service test

Tuesday, June 23rd, 2015

Kai Bader's first PCB manufacturing run with DirtyPCBs: The PCBs are well produced, no “dirt” besides a bit of dust from my side. A few tiny scratches that did not affect the board. The silk screen is clearly readable. Details at Kai Bader's blog.

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Posted in | 3 Comments »

App note: EMC tests and PCB guidelines for automotive linear regulators

Sunday, May 24th, 2015

PCB design guidelines from ON Semiconductors on minimizing electromagnetic interference (EMI) on automotive linear regulators. Link is here Electromagnetic compatibility (EMC) is important for the functionality and security of electronic devices. Today’s designers must deal with steadily increasing system frequencies, changing power limits, high-density layouts required by more complex systems,...

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Mikey’s first DirtyPCB experience

Wednesday, May 13th, 2015

Mikey shares his first impressions with DirtyPCBs: Yes, exclamation mark and lots of yelling! The PCB’s has arrived, lets have a look at them. At first glance they look very good, silk screen is fine, both on top and bottom. The outline of the board feels smooth with a sharp...

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Posted in, PCBs | No Comments »

DirtyPCB Arduino business card

Monday, May 4th, 2015

Here's an instructable by ProtoG on how to make your own PCB business card: In this instructable I am going to show you how to make your own printed circuit board business card. I feel that these business cards will really help you stand out from the crowd and make a...

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Posted in Arduino, tutorials | No Comments »

ChipHeadBang – design for an USB to Serial converter with ICSP header for (slow) bitbang programming

Monday, April 20th, 2015

microtherion has published new project the ChipHeadBang, that is available on Github: Design for an USB to Serial converter with ICSP header for (slow) bitbang programming, based on the CH340G chip. While this seems to work pretty well, and the CH340G can be obtained extremely cheaply from sources such as AliExpress, driver...

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Posted in AVR, USB | 2 Comments »

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