Ceramic capacitor failure

Started by steve in comp.arch.embedded6 days ago 24 replies

I am seeing some failures of ceramic capacitors in a product I designed. These are 1206 22uf 10V ceramic caps, we do not specify a manufacturer....

I am seeing some failures of ceramic capacitors in a product I designed. These are 1206 22uf 10V ceramic caps, we do not specify a manufacturer. The caps are on the output of a 3.3V 1amp 2MHz dc to dc converter (5 amp inductor 2.2uH), there are two in parallel. They become resistive, around 200 ohms. The ripple current is around 0.4 amps total, so I cant see that it is excessive rip


Collection of Byte Magazines 1983-1995

Started by Dave Nadler in comp.arch.embedded6 days ago 6 replies

I have a collection of Byte Magazines from 1983-1995 mostly complete. Any interest before they go to the dump? Free but need to pick up. Lot of...

I have a collection of Byte Magazines from 1983-1995 mostly complete. Any interest before they go to the dump? Free but need to pick up. Lot of history in these!! Thanks, Best Regards, Dave PS: Located near Boston.


Serial Port Emulation

Started by Anonymous in comp.arch.embedded2 weeks ago 44 replies

I'm working to improve a test program for the hardware I use to test some boards I make. These boards are tested using a test fixture controlled...

I'm working to improve a test program for the hardware I use to test some boards I make. These boards are tested using a test fixture controlled over an RS-232 port from the PC. So I don't need to lug hardware around with me I emulate the test fixture on the same PC I run the test program. I need comm port emulation software that will emulate a bridge between two serial ports to


NanoPi A64 working with FA-CAM500B camera on Buildroot compiled Linux

Started by Anonymous in comp.arch.embedded2 weeks ago

Hi, After quite a lot of unsuccessful attempts, I have finally got working configuration for Buildroot that allows to stream image from...

Hi, After quite a lot of unsuccessful attempts, I have finally got working configuration for Buildroot that allows to stream image from FA-CAM500B camera connected to NanoPi A64. That should allow low latency image processing. The configuration is available at alt.sources group. Subject of the post is "Buildroot configuration for NanoPi A64 with FA-CAM500B camera". Direct link to the post is ...


Remote Debugging

Started by Anonymous in comp.arch.embedded3 weeks ago 24 replies

I am working on a test fixture that uses an RS-232 port for control. I travel a lot and don't want to have to drag the test fixture around with...

I am working on a test fixture that uses an RS-232 port for control. I travel a lot and don't want to have to drag the test fixture around with me. Some time ago I was working with an eval board via serial port and used an rPi (Raspberry Pi) to put the serial port on the network and work from another room. That worked pretty well. I didn't have a means of rebooting the tar


Scooter software bug applies brakes hard, sends hipsters airborne

Started by Dave Nadler in comp.arch.embedded3 weeks ago 1 reply

Gotta love it: https://www.bbc.com/news/technology-47371925

Gotta love it: https://www.bbc.com/news/technology-47371925


FOSDEM 2019 Ada Developer Room - presentations & videos online

Started by Dirk Craeynest in comp.arch.embedded3 weeks ago

----------------------------------------------------------------------- *** Presentations, videos, pictures available online *** ...

----------------------------------------------------------------------- *** Presentations, videos, pictures available online *** 9th Ada Developer Room at FOSDEM 2019 Saturday 2 February 2019 Universit? Libre de Bruxelles (ULB), Solbosch Campus, Room AW1.125 Avenue Franklin D. Roosevelt Laan 50, B-1050 Brussels, Belgium ...


How to avoid a task not executed in a real-time OS?

Started by Robert Willy in comp.arch.embedded1 month ago 30 replies

Hi, I was asked the question in the title some time ago. I had some real-time embedded system experience but with RTOS. A watch-dog can avoid a...

Hi, I was asked the question in the title some time ago. I had some real-time embedded system experience but with RTOS. A watch-dog can avoid a task not called in a real-time system. But in a RTOS, what is the right answer for it? I knew task priority, a timer triggered event all can influence a task execution. But they didn't look like the correct answer. What is the right answer do you thi...


FOSDEM 2019 - Ada Developer Room - Sat 2 Feb 2019 - Brussels

Started by Dirk Craeynest in comp.arch.embedded2 months ago

----------------------------------------------------------------------- Ada-Belgium is pleased to announce the program for its ...

----------------------------------------------------------------------- Ada-Belgium is pleased to announce the program for its 9th Ada Developer Room at FOSDEM 2019 (Ada at the Free and Open source Software Developers' European Meeting) on Saturday 2 February 2019 Universit? Libre de Bruxelles (ULB), Solbosch Campus, Room AW1.125 ...


Ada-Europe 2019 Conference - EXTENDED 28 January deadline

Started by Dirk Craeynest in comp.arch.embedded2 months ago

The Ada-Europe 2019 Conference organizers decided to provide more time for authors to prepare their contributions. The deadline for all...

The Ada-Europe 2019 Conference organizers decided to provide more time for authors to prepare their contributions. The deadline for all submissions is extended to Monday 28 January 2019. 3 weeks remain! ----------------------------------------------------------------------- UPDATED Call for Papers - EXTENDED DEADLINE Ada-Europe 24th International Conference...


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