Monthly Archives: November 2023

PCBWay: Educational 555 Board

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I got an email from one of the marketing people from PCBWay who said they could offer me free PCB printing services in exchange for a review of their service on my blog. I am very happy to do that!

Today I signed up for an account over here: https://www.pcbway.com/Member/Login/

The signup process was extremely painless: email address, password, terms of service, privacy policy, done.

(Note: I am not a lawyer, but I did read the ToS and privacy policy, and basically they claim the rights to your design files for various purposes and might transfer your data over an insecure network. I think these services are fine for hobbyists dealing with open hardware, but if you’re a commercial entity dealing with higher value intellectual property or larger volumes you might like to get legal advice before engaging.)

After logging in I got an email confirmation code emailed to me. I updated my account settings including my basic information and contact information so they know where to ship my PCBs. In exchange for my having filled out my full profile they gave me US$35 worth of vouchers with various terms (e.g. minimum spend).

I then used their shared project service to search for a 555 timer circuit that would meet my requirements. I found this one: Educational 555 Board.

I clicked “Add to cart” and accepted all the defaults (shown below) on my order for 5 PCBs. So far I am a happy customer! (Update: as part of our sponsorship deal PCBWay covered the shipping costs too! I was a bit worried they might ask me to cover the shipping, but they included it, which was super excellent, especially as the shipping was about five times as much as the boards themselves!)

I’m just getting started with PCB printing. I expect that in future I will do much more of it. I have been working my way through PCB design with KiCad – updated for KiCad 7 to learn how to design PCBs using KiCad. Apparently there is a PCBWay Plug-In for KiCad, so that might be something worth checking out.

When my PCBs from PCBWay arrive I will make a video of me putting together the 555 timer circuit and then using it to test my IC test probes. Stay tuned for that one!

In The Lab With Jay Jay – November 21, 2023 – Mail Call! Cheap Stuff From China!

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This post is part of my video blog: In The Lab With Jay Jay.

Silly Job Title: Science Officer

Support this channel on Patreon: https://www.patreon.com/JohnElliotV

Today we’re gonna take a look at what arrived recently from AliExpress. They were having a sale so I purchased some natty tools and a few consumables. Details below. I made some notes at the time of purchase if you’re interested in what I paid for this stuff.

In the video I refer to the workstation I am planning to buy for the studio. When I get this new computer I should be able to improve the quality of my YouTube videos. If you’re interested in the details the new computer I’m planning is ‘victory‘. In the video I say this new computer will cost me AUD$6,000, but it’s looking like it will cost more like AUD$7,500 (roughly USD$5,000), so I will have to save my pennies! The Dell OptiPlex computer that I am presently using is ‘wonder‘.

In the video I refer to “box openers”. If you know what these things are actually called, please do let me know!

The spider who popped up on my bench during the recording of this video was found later. He, um, didn’t make it…

Following are some links to where you can buy any of the equipment seen in this video. These are not affiliate links because AliExpress doesn’t support affiliate links for this merchandise. So you get these links for free and from the bottom of my heart. :)

Equipment Link

Digital meter		 Digital Voltmeter Ammeter DC 100V 10A Amp Voltage Current Meter Tester 0.28 Inch Dual LED Display Panel with Connect Wires

Heat Shrink Wire Connectors		 100pcs Heat Shrink Wire Connectors Red Heat Shrink AWG 22 To 18 Butt Electrical Connectors Tinned Solder Sealed Terminals

Heat Shrink Wire Connectors		 300pcs Box Solder Sealed Wire Connectors Heat Shrink Solder Butt Connectors Solder Connector Kit Automotive Marine Insulation

JST XH2.54 Connector Kit		 230 Pcs XH2.54 2p 3p 4p 5pin 2.54mm Pitch Terminal Male And Female Housing Kit Pin Connector Terminal Connector Kit

Crowbar		 Car Audio Disassembly Tool Stainless Steel PryClip Rocker Crowbar Bar Door Panel Disassembly Pry Panel Interior

Drill extension		 3PC Hexagonal Quick Release Self-locking Extension Rod Electric Drill Driver Quick Transfer Rod Screwdriver Extension Rod Tool

Telescopic magnet		 1pc 8lb Orange Red Handle Magnetic Pickup Stainless Steel Antenna Retractable Suction Iron Rod Strong Magnetic Suction Rod Tools

Dismantling tools		 22 In 1 Multifunctional Disassembly Tool Mobile Phone iPad Laptop Screwdriver Maintenance Kit Repair Tools Opening Set For Hand

Telescopic Magnetic Pickup w/ Light		 Telescopic Pickup Magnetic Iron Rod Household Automotive Repair And Inspection Tool Strong Magnetic Metal Screw Suction Rod

Knife blades		 100/50pcs Knife DIY Wood Carving Fruit Food Scalpel Craft Sculpture Cutting Tool Metal Engraving Blades Knifes Wood Carving Disc

Heat Shrink Wire Connectors		 100pcs Waterproof Solder Seal Heat Connector Shrink Butt Connectors Lug Terminals Electrical Wire Car Insulated Terminal

JST XH2.54 Pre-crimped Connector Kit		 2.54mm XH Connector Socket + Pre-crimped Cable Wire 2/3/4/5/6/7 Pin Housing JST Adapter Cable Male Female for JST-XH Connector

Multifunction Hooks		 4Pcs 160mm Car Auto Vehicle Oil Seal Screwdrivers Set O Ring Gasket Puller Remover Pick Hooks Multifunction Tools

Stainless Steel Tray		 1PC Stainless Steel Cosmetic Storage Tray Tattoo Equipment Tray Doctor Surgery Dental Tray Fake Nail Tray Tool

Spudger set		 5PCs Car Audio Trim Removal Tool Kit Anti-Scratch Pry Applicable Car Door Panel and Audio Dashboard

IC Chip Pickup Tool		 IC Chip Pickup Tools Pen Extractor Electronic Parts Gripper Electronic Repair Tools

JST XH2.54 6pin pre-crimped		 2.54mm JST Connector with 22AWG Pre-Crimped Wire, 2/3/4/5/6 Pin Housing JST Adapter Cable Connector 20cm Wire

Metal spudgers		 6PCS Metal Crowbar with Two Ends Universal Mobile Phone Digital Home Appliance Product Dismantling Stick Shell Opening Tool

New motherboard: ASUS ProArt B550-CREATOR

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Ordered myself a new motherboard today, the ASUS ProArt B550-CREATOR. This new board will replace my ASUS PRIME B550M-A in my new/upgraded computer ‘lore‘ (which is replacing ‘longing‘).

This new board has 2x M.2 PCIe 4.0 (as with the old motherboard), 2x 2.5Gbps Ethernet (compared to 1x 1Gbps Ethernet in my old motherboard), and 3x PCIe 16x slots (compared to 1x PCIe 16x slot in my old motherboard).

I will put in 2x M.2 PCIe 4x adapters and 2x M.2 PCIe 1x adapters which will mean I am able to install 6x M.2 drives: 2x Kioxia 256GB, 2x Samsung 990 Pro 2TB, and 2x PNY 1TB.

I will also put in a quad 2.5Gbps PCIe Ethernet adapter which will give me six 2.5Gbps Ethernet ports in total (two onboard and four on PCIe 16x).

When I’m done all four RAM slots will be full (4x Corsair Vengeance 32GB 3200MHz DDR4), both the M.2 slots will be full, all three of the PCIe 16x slots will be full, all four SATA ports will be full (3x Western Digital WD Ultrastar DC HC550 16TB and 1x ASUS BW-16D1HT PRO 16X Blu-ray burner), and both PCIe 1x slots will be full too. Also there will be a bunch of high speed USB ports available on both the front and the back of the case. I feel like I have really squeezed a lot of juice out of this system, it’s operating very close to capacity.

I’m kinda dreading plugging in the USB attachments to the front panel, but I guess if I RTFM and apply some thought I will be able to figure that out.

More chromium woes

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So it seems that my trouble with chromium is not over. Today a new twist. Thank God I still have Firefox! I will try updating and rebooting again, but can’t do that at the moment.

-------------------
Mon Nov 20 10:11:08 [bash:5.2.15 jobs:0 error:0 time:0]
jj5@charisma:/home/jj5
$ chromium 
[4085207:4085207:1120/101109.660602:ERROR:policy_logger.cc(157)] :components/enterprise/browser/controller/chrome_browser_cloud_management_controller.cc(163) Cloud management controller initialization aborted as CBCM is not enabled.
[4085207:4085238:1120/101109.672026:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672044:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672050:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672055:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672061:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672064:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672075:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672079:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672082:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672086:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672091:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672098:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672107:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672115:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672132:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672147:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672154:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672159:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672165:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672169:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672173:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672178:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672185:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085238:1120/101109.672193:ERROR:login_database.cc(1100)] Password decryption failed, encryption_result is 2
[4085207:4085207:1120/101109.758579:ERROR:cmd_buffer_helper.cc(141)] ContextResult::kFatalFailure: CommandBufferHelper::AllocateRingBuffer() failed
Fontconfig error: Cannot load default config file: No such file: (null)
[1120/101109.770548:ERROR:elf_dynamic_array_reader.h(64)] tag not found
[1120/101109.770620:ERROR:elf_dynamic_array_reader.h(64)] tag not found
30185030681216:error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED:../../third_party/boringssl/src/ssl/handshake.cc:393:
Trace/breakpoint trap (core dumped)
-------------------

// 2023-11-22 jj5 – UPDATE: a reboot fixed this problem.