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Archive for the ‘PCBs’ Category

Pressure, temperature and humidity sensor based on MS5637 HDC1080

Thursday, June 16th, 2016

Mare writes: This is another small module to measure air pressure, temperature and humidity. Two sensors are on-board: MS5637 and HDC1080. Microcontroller is small cortex M0 in TSSOP-20 housing from STM: STM32F070CxP. The SN65HVD72DGKR provides RS485 interface functionality with half duplex mode. Voltage regulator, reverse polarity protection and some LED...

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Dirty PCBs review from Big Mess o’ Wires

Friday, June 3rd, 2016

Dirty PCBs detailed review by Big Mess o' Wires: Now for the key question: were the boards any good? From my inspection, I’d say mostly yes. I spent a long time examining the boards under 10x magnification, and comparing them to my original EAGLE files, and to the Gerbers using gerbv....

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Posted in DirtyPCBs.com, PCBs | No Comments »

Quick PCB: TCXO Breakout

Monday, May 16th, 2016

Dan Watson has published a new build: There are some good, inexpensive TCXO modules on eBay that come in the slightly unusual package shown above. This breakout board allows you to mount one of the modules onto the small PCB and adapt it to standard 0.1" breadboard-compatible headers. I have...

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An Android TV-stick baseboard

Saturday, May 7th, 2016

Necromant designed and built an Android TV stick baseboard: The idea was dumb simple. I needed a USB hub, since TV sticks don’t have many USB ports included. I needed GPIOs, so I threw in an attiny2313 that occupied one of the HUB’s ports, I needed a few relays and...

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Posted in PCBs | 1 Comment »

ChipStick – A small scale experimental Forth machine

Friday, March 25th, 2016

Ken Boak blogged about his ChipStick PCB build: The ChipStick design has the following features: MSP430FR2433 with 15.5K FRAM and 4K SRAM External SRAM or FRAM device connected via SPI on USCI B0 CH340G USB to serial converter IC on detachable section of board 3V3 voltage regulator Reset Switch and User LED 20 Pin...

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Having cheap PCB’s made, part 2

Friday, March 25th, 2016

Batches of PCBs from Ivo of Knutsel.org: 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...

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Posted in PCBs | 1 Comment »

Mini CW Keyer / QRSS beacon v1.1

Tuesday, March 1st, 2016

Marko Pavlin has designed a PCB for the CW keyer, he writes: I designed dedicated PCB for the CW keyer. The project is very similar to the version made on prototyping board. Here are the updates: - I added relay and optocoupler for PTT control - The “CW melody” selection pins...

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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 dirtypcbs.com as I know Ian from dangerousprototypes.com for a long time and think he provides good quality, and fast turn...

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Posted in PCBs, techniques | 10 Comments »

ESP8266 breadboard adapter board

Wednesday, February 24th, 2016

Markus designed a single-sided ESP-12/ ESP-07 breadboard adapter PCB: Features are: - Fits ESP-12 and ESP-07 module - Single-sided self-etchable design - Few, cheap parts in SMD - Breadboard-style - one row on each side accessible - Vin >4.5V (max. 7V) input possible with 3V3 onboard voltage regulator (with two...

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Posted in PCBs | 2 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 »

Freescale’s sensors breakout boards

Tuesday, January 19th, 2016

Freescale’s sensors breakout boards from Juan Ignacio Cerrudo: MMA8541Q, FXOS8700CQ, MPL3115A2 and Logic Level Converter: The MMA8451Q is a  low-power, three-axis accelerometer with 14 bits of resolution. It communicates over I2C,  has built in tilt/orientation detection and also tap detection. More details at ssihla site.

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Posted in DIY, PCBs | 2 Comments »

RF probe

Thursday, January 14th, 2016

m0xpd writes: Today I finally got round to building a nice little RF probe kit from Rex, w1rex, the Tuna King over at QRPme. I took the well-executed PCB which - unusually for Rex - had through hole mounting for the components rather than the 'Limerick' construction that recently I've come...

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Atmega16u2 virtual serial example using LUFA Library

Wednesday, January 6th, 2016

Shane of Wattnotions has published a new build, an Atmega16u2 virtual serial LUFA board: What I wanted the LUFA library to do was pretty specific – the atmega16u2 should show up as a virtual serial port so that the computer can connect and read data from it like any other serial...

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Posted in hacks, library, PCBs | 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 »

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 DirtyPCBs.com, PCBs | No Comments »

PCB stencil jig

Thursday, September 24th, 2015

Gonazar's PCB stencil jig: My solution to making a PCB stencil jig. I need this to do a run of ~30 small boards I got from DirtyPCB who also provided me with the stencil. However, I know that I'm going to be making more later with a new revision so I...

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Posted in PCBs, tools | No Comments »

Photon headerless – SMD mounted

Monday, September 21st, 2015

Carsten4207  writes: Just wanted to share what a Photon soldered directly onto a PCB looks like As far as what this is, this will replace my Honeywell Zoning Panel (HZ311) and will give me the ability to add variable dampers. This will also hookup to my HVAC's motor (Evergreen IM)...

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Homemade x-ray inspector reveals PCB secrets

Tuesday, August 11th, 2015

John McMaster has written an article detailing his homemade x-ray scanner: In some previous posts I talked about getting an x-ray head working, reverse engineering an x-ray sensor, and working with LinuxCNC.  In this post I put them all together so that I can take a bunch of x-ray snapshots...

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Simple and small temperature fan control

Monday, August 10th, 2015

Xristost published a new build, a simple and small temperature fan control: I published this schematic long ago in this article: Adjustable power supply and since then I made some improvements in PCB to make the board as small as possible. The idea is to be easy to attach the...

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Building a CC2500 to BLE adaptor

Friday, July 24th, 2015

Don has been working on a CC2500 to BLE adaptor project, that is available on Github: Posting some details in response to questions about the current module.  Everything for the CC2500 is on Github.  Fish around here and you'll also find some iOS and Pebble code.  Sorry, nothing Android based....

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Posted in PCBs, project logs | No Comments »

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Recent Comments

  • DP.: fixed, thanks
  • Bovine: Title of article has the wrong number for ESP8266 typed.
  • burkm m: It drifting even further using that standard XO...
  • langwadt: a HC14 is a bad choice for an xtal oscillator, the unbuffered non-Schmitt trigger HCU04 is much better for that application
  • Bill F: I'm ready for one!