Posted by jpluimers on 2019/07/12
Interesting project: [WayBack] WtRPM: A Web-based (Wt) suite to power up/down your computers – mupuf.org
It hooks a RaspberryPi to your ATX power supply.
Via: [WayBack] gpio – Use Raspberry Pi to control PC’s power switch – Raspberry Pi Stack Exchange
–jeroen
Posted in Development, Hardware Development, Hardware Interfacing, Raspberry Pi | Leave a Comment »
Posted by jpluimers on 2019/06/27
For my reading list: [WayBack] Solid State vs. Electromechanical Relays | Arrow.com
When you need a power switching solution, you are faced with two competing technologies – electromechanical relays and solid state relays. So which is the right choice for your design?
Keywords: SSR versus EMR, SPDT
via:
–jeroen
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Posted by jpluimers on 2019/06/19
As a follow-up on Raspberry Pi and relays – follow up on Having one Raspberry Pi reset another Raspberry Pi through relay or transistor some of my research links to bring this to Arduino, ESP8266, ESP8266X and similar devices:
–jeroen
Posted in Arduino, Development, ESP8266, ESP8266X, Hardware Development | Leave a Comment »
Posted by jpluimers on 2019/06/18
For historic reference: [WayBack] Why is the atmega chip reset three times during programming? – Arduino Stack Exchange.
It is to ensure the device is being reset, no matter which driver you use and how odd that driver behaves.
So what you are seeing there is
- first a brief toggle of DTR by the IDE to force a reset,
- then
avrdudeopening the port and DTR going low,- then finally the IDE toggling DTR again one last time to force a final reset.
–jeroen
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Posted by jpluimers on 2019/06/13
Reminder to self to check out these schematics and find out how I got them in the first place.
Related: UPS Pico in Raspberry Pi as CD changer in pre 09/2002 E46 BMW 320i touring, “switchless nicd nimh battery charger circuit diagram”
–jeroen
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Posted by jpluimers on 2019/05/20
Cool hardware: [WayBack] click-click-click-click-click-CHUNK… – Joe C. Hecht – Google+
Sources:
–jeroen
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Posted by jpluimers on 2019/05/08
For my reading list:
It might be that Mender 1.7 and up support OpenSuSE:
via:
DTB = Device Tree Blob
–jeroen
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Posted by jpluimers on 2019/03/13
Interesting read and watch:
At the recent Embedded Linux Conference and OpenIoT Summit, Mozilla Technical Evangelist Dietrich Ayala proposed a simple and affordable solution to home automation: A discarded smartphone can handle some of the most useful home automation tasks without requiring expensive hubs and sensors — or risking data security in the cloud.
Source: [WayBack] Repurposing Old Smartphones for Home Automation | Linux.com | The source for Linux information.
Via Ruurd Pels.
GitHub Repository autonome/context by autonome (Dietrich Ayala)
–jeroen
Posted in Development, Hardware Development, IoT Internet of Things, Network-and-equipment, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2019/02/20
Smart idea by [WayBack] tinspin/rupy: Async. HTTP & NoSQL Distr. VHost PaaS at [WayBack] 687474703a2f2f686f73742e727570792e73652f636c75737465722e6a7067 (480×640):
Apart from one part I found on Amazon, most parts (and more if you want to built it for instance inside a case) can be obtained from [WayBack] DC : Adafruit Industries, Unique & fun DIY electronics and kits, see the pictures and links below.
I think [WayBack] power supply options for multiple PIs – Raspberry Pi Forums got inspired by this or vice versa.
[WayBack] Amazon.com: kenable DC Power Splitter 5 way Adapter 2.1mm CCTV 12V PSU to 5 Camera Cable: Electronics
[WayBack] Female DC Power adapter – 2.1mm jack to screw terminal block ID: 368 – $2.00 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] 2-Way 2.1mm DC Barrel Jack Splitter Squid ID: 1351 – $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter ID: 2727 – $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] Waterproof DC Power Cable Set – 5.5/2.1mm ID: 743 – $2.50 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] Male DC Power adapter – 2.1mm plug to screw terminal block ID: 369 – $2.00 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] Panel Mount 2.1mm DC barrel jack ID: 610 – $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] MicroUSB to 5.5/2.1mm DC Barrel Jack Adapter ID: 2789 – $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] 4-Way 2.1mm DC Barrel Jack Splitter ID: 1352 – $4.95 : Adafruit Industries, Unique & fun DIY electronics and kitsPosted in Development, Hardware Development, Raspberry Pi | Leave a Comment »
Posted by jpluimers on 2019/02/19
Can you imagine MS-DOS 6.2 recognising an 8 gigabyte SD card and allowing it to format it with multiple 2 gigabyte partitions?
Keeping old stuff working: [WayBack] Insentricity :: Adding Solid-State Storage to an Original IBM PC :: with these nice links:
–jeroen
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The Wiert Corner - irregular stream of stuff 