Archive for the ‘Hardware Development’ Category
Posted by jpluimers on 2025/09/23
This was a cool post: [Wayback/Archive] 433 MHz is not dead! Using an ESP32 board with LoRa module to talk to 433 MHz sensors – CNX Software
433MHz LoRa Transceiver-based ESP32 board work with regular 433 MHz sensors found on the market. This gives end users a simple off-the-shelf solution for receiving these signals without having to use a soldering iron and making a circuit.
…
This opens many doors regarding 433 MHz sensor readings with one device, including weather stations, doors, PIR, TPMS, temperature, and BBQ sensors.
Recommended reading!
Related: [Wayback/Archive] Making your RF 433mhz sensors and devices communicate with your home automation, gateways comparison
–jeroen
Posted in Development, ESP32, Hardware, Hardware Development, IoT Internet of Things, LoRa - Long Range wireless communications network, MQ Message Queueing/Queuing, MQTT, Network-and-equipment, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2025/09/04
I have seen too many sites where cabling was laid en never tested before actual use, which meant locating the cabling and faults was a nightmare.
Be sure to have good (which can be very simple, but more complex when Power over Ethernet is involved) testing hardware and use it during installation. You will thank yourself later.
A few videos that can be helpful:
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Posted in Development, Ethernet, fiber, Hardware, Hardware Development, Internet, Network-and-equipment, PoE - Power over Ethernet, Power User | Tagged: cat5e, fiber, networking, run, shorts, toner | Leave a Comment »
Posted by jpluimers on 2025/07/29
Dennard scaling – Wikipedia
Since around 2005–2007 Dennard scaling appears to have broken down. As of 2016, transistor counts in integrated circuits are still growing, but the resulting improvements in performance are more gradual than the speed-ups resulting from significant frequency increases.[1][10] The primary reason cited for the breakdown is that at small sizes, current leakage poses greater challenges and also causes the chip to heat up, which creates a threat of thermal runaway and therefore further increases energy costs.[1][10] Since 2005, the clock frequency has stagnated at 4 GHz, and the power consumption per CPU at 100 W TDP.
Via [Wayback/Archive] What Happened to the Capacitors in 2002? – YouTube
--jeroen
Posted in Development, Electronics Development, Hardware, Hardware Development, Power User | Leave a Comment »
Posted by jpluimers on 2025/07/24
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The leak was short enough for Google to index the imagery and this text:
WHY2025 nam het zekere voor het onzekere door een ESP32-controller, een lora-chip en een kraakhelder scherm in zijn badge te verwerken. Tweakers …
Edit 20250727: two days later the page got reinstated without in their “Gathering of Tweakers” portion of the site a clarification why it was taken off-line for two days. It is still at the same URL, so I re-archived it: [Wayback/ArchiveBad] Dit is de WHY2025-badge met twee ESP32’s en een loramodule (need to re-archive in Archive.is as their IP got blocked)
The page now is a nice 404: [Wayback/Archive] Dit is de WHY2025-badge met twee ESP32’s en een loramodule
Not sure why the page got retracted, as the specs got released on LinkedIn a month ago at [Wayback/Archive] 🚀 Officially public launched: the WHY2025 Badge! | Jelmer Lopes Terto:
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Posted in Conferences, Development, ESP32, Event, Hardware Development, WHY2025 | Leave a Comment »
Posted by jpluimers on 2025/06/10
I wonder how this evolved, as the links are from fall 2022:
More links and info below, but first the image from the above Tweet:
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Posted in Development, Hardware, Hardware Development, Hardware Interfacing, Raspberry Pi, Software Development | Leave a Comment »
Posted by jpluimers on 2025/05/22
[Wayback/Archive] Electronic Basics by GreatScott! – YouTube
At the time of writing these were some 60 videos each 5-15 minutes long in reversed order (#1 at the bottom, #61 at the top).
This means it is about 10 hours of watching time well worth it.
--jeroen
Posted in Development, Electronics Development, Hardware Development | Tagged: 61 | Leave a Comment »
When at look at a local Amazon site, they have plenty of stuff: [
The Wiert Corner - irregular stream of stuff 