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by RogerClark
Fri May 26, 2017 11:42 pm
Forum: General discussion
Topic: RFID-RC522 crash my code
Replies: 1
Views: 8

Re: RFID-RC522 crash my code

GNU++11 was added to the master repo yesterday
by RogerClark
Fri May 26, 2017 11:41 pm
Forum: Postbag
Topic: Andy's Postbag and random ebay links
Replies: 84
Views: 1623

Re: Andy's Postbag and random ebay links

I recall those articles about wifi antennas made from "pringles" tubes as they are foil lined cardboard. But as I don't eat Pringles that would greatly increase the price of the project. I could make a curved reflector from some aluminium flashing (plate) that I bought on a large roll, whi...
by RogerClark
Fri May 26, 2017 10:16 pm
Forum: Projects
Topic: MENTOL-STM32 based SmartWatch
Replies: 54
Views: 6265

Re: MENTOL-STM32 based SmartWatch

BTW. The term smart watch seems to be a big target for spammers, I have had multiple spam comments posted on my blog in response to my smartwatch posts.

But i have never had advertising spam directed at any other subject
by RogerClark
Fri May 26, 2017 10:13 pm
Forum: General discussion
Topic: blue pill board bricked by maple mini updater.ino
Replies: 25
Views: 191

Re: blue pill board bricked by maple mini updater.ino

On Windows I have managed to connect using the same sort of devices as Rick. But even using STMs official Gui based exe tool, I found that some boards need multiple reset and retries before it will connect. The first STM32 board I bought (an "Ugly board") was particularly bad, and it took ...
by RogerClark
Fri May 26, 2017 9:47 pm
Forum: General discussion
Topic: Minimum ADC reference voltage?
Replies: 6
Views: 53

Re: Minimum ADC reference voltage?

Pito wrote:Except 144pinners, there is no way to setup Vref. It is always wired internally to Vdd :(


I would only want to use a Blue Pill, so I guess I will need to use an external opAmp

Thanks...
by RogerClark
Fri May 26, 2017 9:44 pm
Forum: Postbag
Topic: Andy's Postbag and random ebay links
Replies: 84
Views: 1623

Re: Andy's Postbag and random ebay links

I am not sure if doppler of WiFi would work, as wifi is very wide spectrum, and the doppler shift is only a few MHz

You would also need to quickly detect which channel the approaching car was using.

It sounds very difficult to do.
by RogerClark
Fri May 26, 2017 9:35 pm
Forum: OSX
Topic: Failed to reconnect serial monitor after uploading on macOS
Replies: 29
Views: 415

Re: Failed to reconnect serial monitor after uploading on macOS

My mac is iMac late 2012 3.4GHz Intel Core i7 and OS version is Mac OSX 10.12.4. This works well on my Mac. echo -n wait for ${dummy_port_fullpath}... COUNTER=0 while ! dd if=${dummy_port_fullpath} of=/dev/null count=0 > /dev/null 2>&1 && ((COUNTER++ < 40)); do sleep 0.1 done echo done....
by RogerClark
Fri May 26, 2017 9:30 pm
Forum: Projects
Topic: MENTOL-STM32 based SmartWatch
Replies: 54
Views: 6265

Re: MENTOL-STM32 based SmartWatch

Nazmul wrote:I really surprised why only one specific smart watch. https://www.toptechgiant.com/cheap-smart--watch posted about top 10 smart watches.


None of those watches is reprogrammable via Arduino etc.

You link looks a lot like spam

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