This 2020 project is still so cool!
[Wayback/Wayback] Can you IoT an Airwick air freshener? – James Callaghan:
Archive for the ‘Hardware Development’ Category
Can you IoT an Airwick air freshener? – James Callaghan
Posted by jpluimers on 2024/02/02
Posted in Development, ESP32, Hardware Development, Hardware Interfacing | Leave a Comment »
Some links on e-Ink displays and Raspberry Pi or ESP32
Posted by jpluimers on 2024/01/23
For my link archive:
- [Wayback/Archive] eink hdmi – Google Search
- [Wayback/Archive] e ink hdmi, e ink hdmi Suppliers and Manufacturers at Alibaba.com
- [Wayback/Archive] eink google calendar – Google Search
- [Wayback/Archive] Work in Progress: 12.48″ E-Ink Magic Calendar (details in comments) : raspberry_pi
- [Archive] Raspberry Pi E-Ink Calendar Syncs with Google Calendar | Tom’s Hardware
- [Wayback/Archive] speedyg0nz/MagInkCal: E-Ink Magic Calendar that automatically syncs to Google Calendar and runs off a battery powered Raspberry Pi Zero
- [Wayback/Archive] E-Ink Family Calendar Using ESP32 : 5 Steps (with Pictures) – Instructables
- [Wayback/Archive] kristiantm/eink-family-calendar-esp32: E-ink calendar integrating google calendar og OWM onto a 7.5 inch Waveshare screen based on an ESP32 LOLIN32 board
- [Wayback/Archive] Waveshare Universal e-Paper Driver Board with WiFi Bluetooth SoC ESP32 Onboard Supports Various SPI e-Paper Raw Panels: Amazon.de: Computer & Accessories
–jeroen
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Raspberry Pi And The Story Of SD Card Corruption | Hackaday
Posted by jpluimers on 2023/10/02
[Wayback/Archive] Raspberry Pi And The Story Of SD Card Corruption | Hackaday is long and worth reading.
For me the most important bits are how to prevent SD card wear:
- use good quality power supplies
- put write-heavy operations to SSD
- if it suits your use-case, use OverlayFS
The first is always a good idea. It is the primary reason all our electronics live behind a UPS:
- before doing that we lost too much equipment due to brownouts
- all equipment survived the electromagnetic pulse (EMP) after a 2018 lightning strike
In addition, I posted my personal experience (Samsung microSD cards last way longer than SanDisk cards) on Twitter:
[Wayback/Archive] @hackaday I’m have been running a few Raspberry Pi systems with 8-32Gb micro-SD cards as web-dashboard with refreshes every few minutes or so: much write access. When using Sandisk (no matter the type) they last about a year, Samsung (no matter the type) cards last multiple years.
Via: [Wayback/Archive] hackaday on Twitter: “Raspberry Pi And The Story Of SD Card Corruption https://t.co/R8KNVmQORD” / Twitter
EMP
We had a lightning strike in the evening on 20181111 some 50 meters from our home.
It killed immediately killed this (some pictures further below):
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Posted in *nix, Debian, Development, Hardware Development, Linux, Power User, Raspberry Pi, Raspbian | Leave a Comment »
APC SmartUPS Battery Float Voltage Calibration
Posted by jpluimers on 2023/07/19
For my link archive: [Wayback/Archive] APC SmartUPS Battery Float Voltage Calibration
It is my understanding that older BackUPS units could be adjusted with a potentiometer on the board. Calibration of newer models, and the SmartUPS line is factory set in the unit’s micro-controller. APC is of no assistance with units that are out of warranty. I’ve recently found information of how to recalibrate the battery float voltage through reprogramming the battery gain, and some information about modifying the UPS hardware, described below. I can’t take credit for discovering methods demonstrated, but hope it will be useful to another to have a coherent description.
Via:
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An unexpected turn of events when Jeff Geerling posted “I’m hosting my website on a FARM!”
Posted by jpluimers on 2023/07/06
Some links on the unexpected turn of events after [Archive] Jeff Geerling (@geerlingguy) / Twitter posted
- [Archive] I’m hosting my website on a FARM! – YouTube
- [Wayback/Archive] Hosting this website on a farm – or anywhere | Jeff Geerling
First his site got more traffic because of the post, then within an hour traffic exploded because of a DDoS overflowing both his Raspberry Pi cluster and his mobile data capacity.
Jeff will likely do blog posts on these and update the underlying GitHub repository at [Wayback/Archive] geerlingguy/turing-pi-2-cluster: Turing Pi 2 Cluster , but until then (since his Tweets were not threaded), this is what happened on 20220209 as it taught me a few bits:
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Posted in Cloud, Cloudflare, Containers, Development, Docker, Hardware Development, Infrastructure, Internet, Kubernetes (k8n), LifeHacker, OpenSpeedTest, Power User, Raspberry Pi, SpeedTest | Leave a Comment »
Dutch thread: improving a cheap T-962 reflow-oven to have more sensors, be earthed, and become more robust
Posted by jpluimers on 2023/06/13
Nice Dutch thread: [Archive] Dinsdale. – D💉ane Blijf thuis ⭕️ on Twitter: “Morgen een leuk projectje. Ik heb dit goedkope reflow-oventje. Heb uitgevogeld hoe ik de firmware kan flashen. De interface kan ik op Chinees of Engels zetten. Tevens heeft de nieuwe firmware meer mogelijkheden. ” / Twitter
It is similar to [Wayback/Archive] Improving The T-962 Reflow Oven | Hackaday.
Saved at [Wayback/Archive] Thread by @Dinsdal85174312 on Thread Reader App – Thread Reader App:
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Some links on measuring CO2 and Volatile Organic Compounds in the air
Posted by jpluimers on 2023/05/02
Some links on measuring these:
I was triggered by some messages in a thread:
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Posted in Development, ESP32, Hardware Development, Hardware Interfacing, IKEA hacks, LifeHacker, Power User | Leave a Comment »
Special cartridges with heat-shrink tubing for dymo and brother label writers
Posted by jpluimers on 2023/04/26
Labeling cables is important, especially when you have a lot of them, and it is tough:
- Paper and plastic tables tend to loosen over time.
- Numbers or letters you can snap on only work on thicker cables and over time tend to break loose (due to plasticisers evaporating).
- Permanent markers are less permanent and fade over time.
Hopefully heat-shrink tubing you can print on with either Dymo or Brother laber writers will outlast 3. At least they won’t loosen like 2. and 1.
So I was glad that [Archive] Jilles🏳️🌈 (@jilles_com) / Twitter started a thread, which I tried to help keeping coherent.
Some of the messages:
- [Archive] Jilles🏳️🌈 on Twitter: “When you are chaotic and don’t want to mess stuff up”
- Dymo
- [Archive] stacksmashing on Twitter: “@jilles_com At the risk of contributing to your filled mailbox: Do you know that there’s Dymo Heat-Shrink-Tubing? “
- [Archive] Bruce Barnett on Twitter: “@ghidraninja @jilles_com “Compatible with DYMO Rhino 4200, 5200, 6000 industrial label printers.” :-( But Robert Darby’s review says it works on the $20 model 160 as well!! I’m in!”
- [Wayback/Archive] Works great with the cheaper printers too!
On a whim I ordered the DYMO LabelManager 160 label maker (well under $20) on the off chance that since the label reels are identical between the vinyl labels that it uses and this shrink wrap that maybe, just maybe it’ll work. Not to mention, save me at least $60.
As it turns out , IT DOES WORK ! - [Archive/ Jilles🏳️🌈 on Twitter: “@grymoire @ghidraninja I own a Dymo LabelManager 220P and according to the shrinktube is D1 and compatible with my label writer. Will see if that’s true tomorrow. “
- [Wayback/Archive] Works great with the cheaper printers too!
- [Archive] Bruce Barnett on Twitter: “@jpluimers @bencpye @ghidraninja @jilles_com …”
- [Archive] Bruce Barnett on Twitter: “@jpluimers @bencpye @ghidraninja @jilles_com And the Amazon link is here …”
- [Archive] Jeroen Wiert Pluimers on Twitter: “@grymoire @bencpye @ghidraninja @jilles_com Jilles already got it in the mail. Awesome! …”
[Archive] Jilles🏳️🌈 on Twitter: “Seems Nineleaf is selling DYMO compatible printable heat shrink tubes for way less: 1805443 24mm 18057 19mm = 3/4″ 18055 12mm = 1/2″ 18053 9mm = 3/8″ 18051 6mm = 1/4″ …”- [Archive] Bruce Barnett on Twitter: “@jilles_com @jpluimers @bencpye @ghidraninja Here’s the US amazon link for the 1/2” tape (18055/18056) from Nineleaf. 1 DYMO costs $34, while 3 Nineleaf cartridges costs $15. Much cheaper! No reviews though… …”
- [Archive] Jeroen Wiert Pluimers on Twitter: “@jilles_com @grymoire @bencpye @ghidraninja And more posts like this (: …”
- [Archive] Jilles🏳️🌈 on Twitter: “/mail heat shrink tube for DYMO Labelwriter “
From left to right: 6mm(1/4″), 9mm(3/8″), 12mm(1/2″), 18mm(3/4″), 24mm(1″), each length 1.5m (5′).
- [Archive] Jilles🏳️🌈 on Twitter: “Well, 24 and 19mm don’t fit in the device. …”
- [Archive] Jilles🏳️🌈 on Twitter: “6, 9 and 12mm do fit (and print) …”
- [Archive] Jilles🏳️🌈 on Twitter: “Different sizes”
From left to right: 6mm(1/4″), 9mm(3/8″), 12mm(1/2″), 18mm(3/4″), 24mm(1″), each length 1.5m (5′).
- Brother
- [Archive] Ben Pye on Twitter: “@jpluimers @grymoire @ghidraninja @jilles_com Brother apparently have something the same too – and again can work with their cheap printers “
- [Wayback/Archive] Print Your Own Heat Shrink Labels For Factory-Chic Wire Naming | Hackaday
- [Archive] Ben Pye on Twitter: “@jpluimers @grymoire @ghidraninja @jilles_com Well I could have gone cheaper but PC connected was too tempting – … Now to wait for the clone heat shrink from AliExpress…”
- [Archive] Ben Pye on Twitter: “@jpluimers @grymoire @ghidraninja @jilles_com There’s even a protocol manual! … If every printer had one of these the world would be a better place.”
- [Wayback/Archive] Print Your Own Heat Shrink Labels For Factory-Chic Wire Naming | Hackaday
- [Archive] Ben Pye on Twitter: “@jpluimers @grymoire @ghidraninja @jilles_com Brother apparently have something the same too – and again can work with their cheap printers “
–jeroen
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Kevin Lewis (he/him) on Twitter: “Wow thanks for all the support folks! I’ve been working on this project today: larger font, options for single/group captioning powered by @DeepgramAI, and a static badge mode as suggested by @bitandbang https://t.co/FBELwDsD4V” / Twitter
Posted by jpluimers on 2023/04/25
Wow, just wow: [Archive] Kevin Lewis (he/him) on Twitter: “Wow thanks for all the support folks! I’ve been working on this project today: larger font, options for single/group captioning powered by @DeepgramAI, and a static badge mode as suggested by @bitandbang https://t.co/FBELwDsD4V” / Twitter
Via [Archive] Jilles🏳️🌈 on Twitter: “Love it and worried about it at the same time.” / Twitter
–jeroen
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The fundamentals of programming, a thread by @isotopp on Twitter
Posted by jpluimers on 2023/03/22
Kristian Kohntöpp publishes great DevOps related threads on Twitter. [Wayback/Archive] Thread by @isotopp “I am Kris, and I am 53 now. I learned programming on a Commodore 64 in 1983. My first real programming language (because C64 isn’t one) was 6502 assembler, forwards and backwards. “ is his response, about a year and a half ago, to a request by Julia Evans (@b0rk) that I also saved: [Wayback/Archive] Thread by @b0rk on Thread Reader App – Thread Reader App.
Her request: [Archive] 🔎Julia Evans🔍 on Twitter: “if you’ve been working in computing for > 15 years — are there fundamentals that you learned “on the job” 15 years ago that you think most people aren’t learning on the job today? (I’m thinking about how for example nobody has ever paid me to write C code)” / Twitter followed by [Archive] 🔎Julia Evans🔍 on Twitter: “I’m especially interested in topics that are still relevant today (like C programming) but are just harder to pick up at work now than they used to be” / Twitter.
The start of his thread is [Archive] Kris on Twitter: “@b0rk I am Kris, and I am 53 now. I learned programming on a Commodore 64 in 1983. My first real programming language (because C64 isn’t one) was 6502 assembler, forwards and backwards.” / Twitter.
Kristian’s story is very similar to mine, though I sooner stepped up the structured programming language ladder as at high school, I had access to an Apple //e with a Z80 card (yes, the SoftCard), so could run CP/M with Turbo Pascal 1.0 (later 2.0 and 3.0) which I partly described in The calculators that got me into programming (via: calculators : Algorithms for the masses – julian m bucknall), followed by early access at the close by university to PC’s running on 8086 and up. The computer science lab, now called Snellius, but back then known as CRI for Centraal RekenInstituut – is now had an educational deal with IBM, which means they switched from the PC/XT to the PC/AT with a 80286 processor as soon as the latter came out).
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Posted in 6502 Assembly, Assembly Language, Development, ESP32, ESP8266, Software Development, x86 | Leave a Comment »
The Wiert Corner - irregular stream of stuff 