Search found 423 matches

by parkview
Sat Mar 14, 2020 8:27 am
Forum: Projects
Topic: Decapping Integrated Circuits
Replies: 0
Views: 174

Decapping Integrated Circuits

Last week Hack-a-Day posted an blog page on how you can decap an IC via using heat to decompose the glue that holds the top and bottom of the IC together: https://hackaday.com/2020/03/11/chip-decapping-the-easy-way/ The next day I setup my trusty Chinese hot air soldering station out in the shed and...
by parkview
Fri Mar 13, 2020 2:07 pm
Forum: Projects
Topic: Laser Cutter in Workshop
Replies: 1
Views: 224

Re: Laser Cutter in Workshop

Looks to be a neat setup. The fan is noisy, so having it away from the laser would be nice.
by parkview
Tue Mar 10, 2020 1:53 pm
Forum: Projects
Topic: 3D Printed Bike iPhone 6S holder
Replies: 0
Views: 220

3D Printed Bike iPhone 6S holder

My iPhone 6S doesn't fit into the old 4S phone holder that I had on the bike. Not wanting to buy an updated holder for an old iPhone 6S, I decided to design up and 3D print a holder. This is the quick design I created for it: iphone holder model.jpg While I designed up a top for the holder that clic...
by parkview
Mon Mar 09, 2020 12:08 pm
Forum: Projects
Topic: STM32F042 Dev Board
Replies: 1
Views: 577

Re: STM32F042 Dev Board

The STM32F042 TSS0-20 pin panellized dev boards arrived back the other day: stm32F042_Panel.jpg As I only have one STM32F042 IC left (more on order), I decided to hand solder the few components onto the board. I started off using some 0.3mm solder, but even though it says it's 63%Sn/37%Pb, it doesn'...
by parkview
Fri Mar 06, 2020 10:18 am
Forum: Projects
Topic: USB Power Controller
Replies: 0
Views: 388

USB Power Controller

A string of LED fairy lights draw around 750mA. I haven't counted the number of LED's, but there is quite a few of them running in parallel. The ones we have don't do anything, they can be either off, or on, but they do look pretty. While you can buy controllers for them, I thought it might be fun t...
by parkview
Fri Mar 06, 2020 10:04 am
Forum: Projects
Topic: 12V Power Distribution and Monitoring Board
Replies: 0
Views: 329

12V Power Distribution and Monitoring Board

I currently have three small micro computers that I am using for FreeBSD Servers at home. These where purchased for under A$300 each and come with 4-8GB of RAM and are powered from a 12V DC power source. They draw around 0.75A at idle and can go up to 1.2A at full CPU/SSD usage etc. I quickly wipped...
by parkview
Fri Mar 06, 2020 9:35 am
Forum: Projects
Topic: Cat Buzzer
Replies: 2
Views: 589

Re: Cat Buzzer

Due to the virus issues, the PCB took a while to manufacture. I picked a green solder mask as this is the default colour and it normally will be manufactured in 2 days, vs. 4-7 days for a white solder mask: Cat-Buzzer-Toy.jpg Underneath the PCB is a USB LiPo battery charger PCB. This is soldered ont...
by parkview
Mon Jan 27, 2020 10:06 pm
Forum: Projects
Topic: STM32F042 Dev Board
Replies: 1
Views: 577

STM32F042 Dev Board

I went looking for a STM32F042F4P6 dev board on Aliexpress yesterday. Such a thing doesn't exist!! There is the poor cousin, the STM32F030, but that's it. This afternoons project was to whip one up: STM32F042F4P6 PCB V1.0.jpg Not much to it, just the basics plus a DIP switch and a LED etc. It's only...
by parkview
Fri Jan 24, 2020 4:45 pm
Forum: Projects
Topic: Digital LED Candle
Replies: 4
Views: 458

Re: Digital LED Candle

The PCB arrived back from JLCPCB, Shenzhen the other day. Four days in production and 17 days in transit and according to the tracking, most of that was in Australia! I like to gather all the components together and lay them out neatly, ready for placement: component-layout.jpg I experimented with a...
by parkview
Sat Jan 18, 2020 9:29 pm
Forum: General Electronics
Topic: Low Voltage Drop Input Voltage Protection
Replies: 0
Views: 689

Low Voltage Drop Input Voltage Protection

For many years now I have used a Schottky Diode as my input reverse voltage protection device. Depending on the type of diode and current drawn, these usually give a voltage drop between 0.3V and 0.5V. This is better than a normal power diode which might give you a drop of 0.6V to 0.7V. The other da...
by parkview
Sat Jan 18, 2020 8:53 pm
Forum: Projects
Topic: Cat Buzzer
Replies: 2
Views: 589

Cat Buzzer

There where three cats living at Steamhead Maker Space in Shenzhen. This made for a lively show every now and then as each one woudl try to be king of the mat or box. I thought it might be fun to make a small randomized buzzer that would buzz for a second then go back to sleep for 30 to 60 minutes. ...
by parkview
Sun Jan 05, 2020 2:37 pm
Forum: General Electronics
Topic: How to Turn PDF based IC Chip layouts into KiCAD Symbols
Replies: 1
Views: 192

Re: How to Turn PDF based IC Chip layouts into KiCAD Symbols

Oh, and if you don't want to use the CLI conversion software, you can do it one by one via the GUI Editor:
GUI PDF Conversion.jpg
GUI PDF Conversion.jpg (33.46 KiB) Viewed 191 times
by parkview
Sun Jan 05, 2020 2:18 pm
Forum: General Electronics
Topic: How to Turn PDF based IC Chip layouts into KiCAD Symbols
Replies: 1
Views: 192

How to Turn PDF based IC Chip layouts into KiCAD Symbols

I am currently going through a spurt of KiCAD projects. I needed to create a few STM32 64 pin symbols and process some other chips. I was going to grab something that was close and manually convert it to what I need or just draw them up from scratch. This is a great time to try out the free 'uConfig...
by parkview
Sat Jan 04, 2020 2:53 pm
Forum: Projects
Topic: Playing Around with LEDs and Clothing Toggles
Replies: 0
Views: 552

Playing Around with LEDs and Clothing Toggles

Back in 2017 a group of us where touring the fairy land of the Shaibu Fabric Markets in Shenzhen (Take Exit C at the Shaibu Station): fabric_buildings.jpg One building has a few floors that are a wonderland of fabric bling: Shaibu_Markets1.jpg Shaibu2.jpg Shaibu3.jpg shaibu4.jpg I came across some c...
by parkview
Fri Jan 03, 2020 1:14 pm
Forum: Projects
Topic: Playing around with a Risc-V demo processor board
Replies: 2
Views: 365

Re: Playing around with a Risc-V demo processor board

So lets have a play with writing a simple program using the Arduino framework on PlatformIO. After installing the Sipeed Longan Nano-Lite board form the home page, I created a new project with this code: platformio.ini config: [env:sipeed-longan-nano-lite] platform = gd32v board = sipeed-longan-nano...
by parkview
Fri Jan 03, 2020 1:06 pm
Forum: Projects
Topic: Playing around with a Risc-V demo processor board
Replies: 2
Views: 365

Playing around with a Risc-V demo processor board

The RISC-V processor is one of the first open source intellectual property rights free CPU. This means anyone (or company), can use the files and information to create their own RSIC-V core CPU. More info can be found here: https://riscv.org/ I have been following it's journy for a number of years, ...
by parkview
Sat Dec 28, 2019 6:09 pm
Forum: Product Reviews
Topic: KiCAD Librarian Software
Replies: 0
Views: 832

KiCAD Librarian Software

Over the years I have created quite a few specialised component symbols and footprints in KiCAD 4 and 5. For the footprints I found I could just move the *.pretty files into one directory. Yes, it stuffed up all the old projects, but they can be reloaded/re-linked when I next access them. The Symbol...
by parkview
Sat Dec 28, 2019 1:26 pm
Forum: Projects
Topic: Digital LED Candle
Replies: 4
Views: 458

Re: Digital LED Candle

So a quick trace re-route fixed the PCB layout fault: LED_Candle_V1.2_PCB-fix.jpg However, it was still rather long, so for Version 1.3 I re-sized the resistors down to 0603 and found that the STM32 SWD programming port didn't need 6 wires, so I replaced the socket with a smaller 4 pin socket. With ...
by parkview
Sat Dec 28, 2019 1:04 pm
Forum: Projects
Topic: Digital LED Candle
Replies: 4
Views: 458

Re: Digital LED Candle

So the PCB Version 1.1 was a success and I quickly had the LEDs blinking via an Arduino Nano. While it works well, I didn't really want to have to insert a Nano, battery AND my LED PCB into our lanterns. I have been meaning to learn the STM32 platform of MCU's, so this felt like a perfect time to ha...
by parkview
Sat Dec 14, 2019 7:36 pm
Forum: Projects
Topic: Simple USB Cable Tester
Replies: 0
Views: 611

Simple USB Cable Tester

Steamhead, being a Maker Space, has a lot of USB cables. Some of these might be broken, or only have two power wires for charging something, or might be intermittent or broken wires. I was working on a Arduino Nano project and didn't know if it was the old Nano I have been carting around Asia for th...