That Moment When:

You realize the yellow inductors you bought off ebay are not iron cores but probably ferite because 40 turns is equal to + 70uH. Or when you realize your LCR meter is a giant pile of gimp shit and will not measure a value of inductance lower than 10uH. It has been one of THOSE days in homebrewing and so now I am making a test jig to use with the signal generator and oscilloscope to measure the value of the inductors I am winding with some level of accuracy and then getting confused about how accurate the measures will be because inductance changes with frequency and and all that. HIHI. The life of the unwitting, the unknowing and the down right confused.

 

EDIT: the yellow inductors are most likely type 26, yellow and white. The inductance values I am getting for a given number of turns would suggest this is the case. Type 26 is not much use in RF, good to 1mhz.

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Getting Boards Made With PCBWay

So i am getting some boards made with PCBway they are a board manufacturer in China that offer a whole lot of professional services, but also cater for the home brewer. So I thought i would document my experience with them from start to finish.

They offer 10 boards upto 100mm x 100mm in size for $10 US. Which is great for me as most of the projects I build will fit on that size board really easily. The project i was getting build is the board I designed for the Arduno VFO with SI5351a Synth. I designed up the board in Sprint Layout, exported the gerber and excellion files, put them in a zip file and uploaded them to PCBway.

Once a day they have someone check the uploaded files meet with their specifications for track size, drill sizes, board dimensions etc and that you have the correct amount of gerber files etc. About 20mins after uploading i checked and they came back that I was missing the soldermask files. Well the files were in the zip but for some reason I stuffed up something and they contained no data, no big deal, i re-did the files, this time checking for myself that the soldermask contained data by loading them up in Flatcam, and then resubmitted. About an hour later, I got confirmation my files were OK, I could then pay for the job and have it put in the process cue.

This is one really good thing about PCBway, they do not take your money until they have confirmed and checked that they can process your job. Unlike some of the other places that want money without even checking your job is appropriate.

So the rest of this is really just a timeline of how quickly they process the job.

My order date and time was Order time & date: 11/20/2016 6:28:30 PM, from there the job was put in the process and It proceeded as follows.

MI (Manufacture Instruction)    11/21/2016 9:55:02 PM
Board Cutting    11/21/2016 10:25:30 PM
Drill    11/22/2016 4:01:02 AM
Plated Through Hole    11/22/2016 5:39:16 AM
Circuit    11/22/2016 8:25:54 AM
Etching    11/22/2016 10:04:25 AM
AOI    11/22/2016 2:42:58 PM
Solder Mask    11/22/2016 7:16:54 PM
Silkscreen    11/23/2016 12:30:48 AM
Surface Treatment    11/23/2016 1:58:30 AM
Double Drilling    11/23/2016 5:58:25 AM
Routing    11/23/2016 5:58:35 AM
Testing    11/23/2016 7:18:08 AM
Package    11/23/2016 8:41:50 AM
Delivery Ready    11/23/2016 11:48:54 AM

You can follow online on the website the process of your job as it proceeds through each manufacturing process. All up, from when I booked the job to when it was put in the post, 4 days. Super fast, and when you take DHL as the postage method, a few more days and you will have the boards in your hand. So after receiving the email confirmation that my job has been posted, I checked the tracking number on the DHL website and it shows the job has been picked up, so i expect i will have boards in my hand some Friday this week. So I am estimating, a total of 7 days from order to receipt of the boards. One cannot complain at that.

I will upload this post with pictures of the boards and my thoughts on the quality once I have them in my hands. So far, so good though. Cant wait to see the boards.

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Quality of the boards is certainly high. I cannot find any flaw other than the once I made in the design. Its not like PCBway can read my mind, understand my project and fix those things for me HAHAHA.

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The board kind of assembled.

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And thats the final assembled board. I am one happy customer, and will be going back to PCBway very soon to have more boards made, for some other projects i have in the works. 10 boards, 100mm x 100mm for $10. WIN.

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Heat Shrink, KILL IT!

Here is something home brewing pet owners will understand. Anything that looks like a snake needs to be killed if you are a cat and with two Bengals in our house a lot of my supplies get killed. Wire, heat shrink it is all fair game. One of our cats like to collect Dupont Jumpers i use for bread boarding and Arduino projects. Nothing is safe 🙂

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