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by emyr
Sat Apr 06, 2019 9:36 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: python i2c lcd NLVC1626A 16x2 big character (LCD 19264?)
Replies: 4
Views: 850

Re: python i2c lcd NLVC1626A 16x2 big character (LCD 19264?)

I tried a second time to write on the lcd, but nothing seems to work now, what can possibly gone wrong?
Thanks.
Emanuele
by emyr
Sat Apr 06, 2019 9:13 am
Forum: Automation, sensing and robotics
Topic: HELP - Stepper Motor and Adafruit Hat 2348
Replies: 3
Views: 556

Re: HELP - Stepper Motor and Adafruit Hat 2348

Thank you for your 'fast' reply, I'm going to read yours links and posting my conclusion.
Emanuele.
by emyr
Fri Apr 05, 2019 8:00 pm
Forum: Automation, sensing and robotics
Topic: HELP - Stepper Motor and Adafruit Hat 2348
Replies: 3
Views: 556

HELP - Stepper Motor and Adafruit Hat 2348

Hello I'm trying to control 3 stepper motor throughout the Adafruit Hat 2348 as per https://learn.adafruit.com/adafruit-dc-and-stepper-motor-hat-for-raspberry-pi. I'm using this example program: """Simple test for using adafruit_motorkit with a stepper motor""" from adafruit_motorkit import MotorKit...
by emyr
Sat Mar 16, 2019 6:49 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: python i2c lcd NLVC1626A 16x2 big character (LCD 19264?)
Replies: 4
Views: 850

Re: python i2c lcd NLVC1626A 16x2 big character (LCD 19264?)

Thank for your fast reply, You hit the mark with "contrast pot".
Now it work flawlessly.
by emyr
Fri Mar 15, 2019 10:13 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: python i2c lcd NLVC1626A 16x2 big character (LCD 19264?)
Replies: 4
Views: 850

python i2c lcd NLVC1626A 16x2 big character (LCD 19264?)

Hello i'm trying to use a lcd display via i2c, on the motherboard there are "NLVC1626A" label. It is possibly a LCD 19264, I think it is simply a 1602 with big character. Right now I'm using this code: import smbus import time # Define some device parameters I2C_ADDR = 0x27 # I2C device address, if ...
by emyr
Sat May 14, 2016 9:26 am
Forum: Troubleshooting
Topic: EXT4-fs Error during upgrade
Replies: 8
Views: 2472

Re: EXT4-fs Error during upgrade

Same here...
New raspian image when try to install some program I get a lot of inode and fs error...
by emyr
Fri Dec 07, 2012 8:33 am
Forum: Troubleshooting
Topic: Glitch sound before and after sound is played
Replies: 4
Views: 691

Re: Glitch sound before and after sound is played

try
aplay /usr/share/sounds/alsa/Front_Center.wav

-ra was my mistake.....mistyping
by emyr
Thu Dec 06, 2012 5:49 pm
Forum: Python
Topic: make your python talk
Replies: 8
Views: 10124

Re: make your python talk

you had to correct the python library for espeak, its a common problem with ubuntu too.... correct espeak behavior in python sudo nano /usr/local/lib/python2.7/dist-packages/pyttsx-1.0.egg/pyttsx/drivers/espeak.py after EspeakDriver._defaultVoice = self.getProperty('voice') add if EspeakDriver._defa...
by emyr
Thu Dec 06, 2012 5:46 pm
Forum: Troubleshooting
Topic: Glitch sound before and after sound is played
Replies: 4
Views: 691

Re: Glitch sound before and after sound is played

the problem is the sample rate of espeak: 22050
if you convert it to 48000 then problem will vanish
ffmpeg -i name.wav -ra 48000 out.wav
aplay out.wav

the problem is not present if you use hmdi output

No one know how to increase the sample rate of espeak?

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