Search found 7471 matches

by RogerClark
Thu Dec 14, 2017 8:19 pm
Forum: Projects
Topic: BP carrier card advice needed
Replies: 1
Views: 18

Re: BP carrier card advice needed

It just sounds like a very big, rather than a very complex board. I see no need for 4 layers. It’s amazing what can be done with just 2 layers and the cost of 2 layers is around 5 to 10 times less than 4 layers. The only thing that sounds potentially problematic is the supply noise, e.g. loads of re...
by RogerClark
Thu Dec 14, 2017 8:12 pm
Forum: IDE's
Topic: STM acquires Atollic
Replies: 4
Views: 39

Re: STM acquires Atollic

I thought True Studio was already free.

Perhaps it wasn’t free for commercial use.

On a similar vein, Segger now allow their Embedded Studio IDE, to be used by Nordic Semi users, completely free, even for commericial. I imagine this will start to hurt Kiel
by RogerClark
Thu Dec 14, 2017 8:08 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from Philippines
Replies: 4
Views: 22

Re: Hello from Philippines

This is the second person to think the STLink dongle has Serial.
Perhaps some vendors are falsely advertising it as having serial
by RogerClark
Thu Dec 14, 2017 8:07 pm
Forum: Projects
Topic: Open Energy Monitor
Replies: 65
Views: 8914

Re: Open Energy Monitor

38400 sounds plenty fast enough.

I think I sample for 100 half cycles, i.e 1 second, which is time to send over 3000 chars to the ESP8266
by RogerClark
Thu Dec 14, 2017 8:04 pm
Forum: Off topic
Topic: DS212 Open Source Oscilloscope.
Replies: 9
Views: 61

Re: DS212 Open Source Oscilloscope.

Synchronising the multiplexer with the DMA ADC , to switch inputs at the right time, would be “interesting”. Perhaps DMA some bits of one of the timers to some GPIO pins.. However, range selection via the multiplexer would be more useful. If the Ds212is truely open source, perhaps their input schema...
by RogerClark
Thu Dec 14, 2017 7:58 pm
Forum: Projects
Topic: F405 & F411 versions of the BluePill
Replies: 490
Views: 8040

Re: F405 & F411 versions of the BluePill

At last, something that is easier in KiCad ;-) ( yes I am joking, KiCad is just different, not necessarily more difficult overall) BTW. I noticed that Eagle are now advertising it now supports Push And Shove routing, but KiCad has had that for ages ( in OpenGL disolay mode) I also happened to notice...
by RogerClark
Thu Dec 14, 2017 11:13 am
Forum: Off topic
Topic: DS212 Open Source Oscilloscope.
Replies: 9
Views: 61

Re: DS212 Open Source Oscilloscope.

Btw. In tha video the analog input seems to be done with a 4053

http://www.ti.com/product/CD4053B

They are quite cheap
by RogerClark
Thu Dec 14, 2017 11:07 am
Forum: Off topic
Topic: DS212 Open Source Oscilloscope.
Replies: 9
Views: 61

Re: DS212 Open Source Oscilloscope.

Andy,

the eBay link asks me to sign in...
by RogerClark
Thu Dec 14, 2017 9:54 am
Forum: Problems with libraries
Topic: Multiple I2C libraries
Replies: 7
Views: 79

Re: Multiple I2C libraries

Sounds like the code may be crashing before setup() is called.

This is commonly caused by the constructors in libraries attempting to use GPIO or I2c or SPI etc before its initialised.
by RogerClark
Thu Dec 14, 2017 9:52 am
Forum: Off topic
Topic: DS212 Open Source Oscilloscope.
Replies: 9
Views: 61

Re: DS212 Open Source Oscilloscope.

You can build a Pig-O-Scope for $10, I think thats much more fun and almost as practical as a test tool !