Search found 121 matches
- Thu Jan 10, 2019 8:52 pm
- Forum: General Discussion and Questions
- Topic: Sensing sound from a speaker
- Replies: 9
- Views: 5755
Re: Sensing sound from a speaker
First you should try to examine the signal. An oscilloscope would be needed for that. Also Tones are no simple DC Voltage. It‘s AC. So depending on the moment of measuring you can get 5V, 0V or maybe -5V. As an alternative you can get simple chinese mikrophone moduls. They have an A0 analog AC Outpu...
- Mon Jan 07, 2019 1:17 pm
- Forum: General Discussion and Questions
- Topic: Saving the value from I/O
- Replies: 1
- Views: 1790
Re: Saving the value from I/O
Micropython has a filesystem in flash, so just use normal file operations to save data.
- Thu Jan 03, 2019 4:43 pm
- Forum: Newsletter archive
- Topic: MicroPython Newsletter Issue 1
- Replies: 29
- Views: 330824
Re: MicroPython Newsletter Issue 1
According to the Speaker in this Video (Christine Spindler) Pyboard-D is in the final testing and should be out in the next two weeks...
- Thu Jan 03, 2019 2:20 pm
- Forum: General Discussion and Questions
- Topic: Pyboard D - demo
- Replies: 3
- Views: 3806
Re: Pyboard D - demo
Please note that the CCC does not particular like to support Youtube. This is the link directly to the talk: https://media.ccc.de/v/35c3-9648-microp ... ontrollers
- Thu Jan 03, 2019 10:49 am
- Forum: ESP8266 boards
- Topic: Interrupt Routine, counting more than sys.maxsize
- Replies: 8
- Views: 4704
Re: Interrupt Routine, counting more than sys.maxsize
Thanks a lot. Now I'm seeing much clearer :-) I think the conclusion for me is that you can't really rely on the Interrupt of the ESP8266 to be very accurate/fast. But for my purpose they are working well enough (A timing of 1 ms would be 360 kW which I will never use in my flat) so I don't need to ...
- Wed Jan 02, 2019 8:06 pm
- Forum: ESP8266 boards
- Topic: Interrupt Routine, counting more than sys.maxsize
- Replies: 8
- Views: 4704
Re: Interrupt Routine, counting more than sys.maxsize
Of course, my code to count the Pulses from a Power Meter is no secret, if it helps: https://github.com/ThomasChr/ESP8266-re ... er/main.py
- Wed Jan 02, 2019 7:58 pm
- Forum: ESP8266 boards
- Topic: Interrupt Routine, counting more than sys.maxsize
- Replies: 8
- Views: 4704
Re: Interrupt Routine, counting more than sys.maxsize
In my case I‘m usig a Pin Change Interrupt. Does anyone know what the advantages and disadvantages of a hard ISR are?
- Wed Jan 02, 2019 7:06 pm
- Forum: ESP8266 boards
- Topic: Interrupt Routine, counting more than sys.maxsize
- Replies: 8
- Views: 4704
Interrupt Routine, counting more than sys.maxsize
Hello Forum, I've got an ESP8266 with Micropython which is counting pulses. The pulses are count in an Interrupt Handler. They can be many and eventually they could be more than sys.maxize (2147483647). In the micropython manual I can read that: MicroPython supports integers of arbitrary precision. ...
- Sun Jul 29, 2018 8:57 pm
- Forum: General Discussion and Questions
- Topic: Calling an OS system command
- Replies: 5
- Views: 5321
- Fri May 11, 2018 1:13 pm
- Forum: MicroPython pyboard
- Topic: Clone from the original PyBoard
- Replies: 2
- Views: 2594
Re: Clone from the original PyBoard
I found the first change. Seems that they cut the cost on the voltage regulator. My pyboard uses 5 Microamps in pyb.standby() - the chinese Board uses 50 Microamps.