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by lukeserial
Sun Dec 16, 2018 2:57 pm
Forum: Graphics, sound and multimedia
Topic: Interactive Multichannel Sound and LED matrix animation
Replies: 0
Views: 543

Interactive Multichannel Sound and LED matrix animation

Current project will include an IR sensor with heat blob detection to count people in a room. Based on the number of people in room, I will play different sound loops. There are 8 sound loops. I want each sound loop to come from a different loudspeaker. Based on the sound playing an LED matrix in th...
by lukeserial
Thu Dec 07, 2017 12:58 am
Forum: Troubleshooting
Topic: Can't get FONA 3G to respond to serial on Pi 3
Replies: 7
Views: 1181

Re: Can't get FONA 3G to respond to serial on Pi 3

I realized that I had not fully tested whether the Pi could send serial commands. To test this I used the following Arduino code. const int ledPin =13; int n; void setup() { pinMode(ledPin, OUTPUT); Serial.begin(9600); n = 7; } void loop(){ if(Serial.available()){ n = Serial.read() - '0'; } digitalW...
by lukeserial
Wed Dec 06, 2017 2:21 pm
Forum: Troubleshooting
Topic: Can't get FONA 3G to respond to serial on Pi 3
Replies: 7
Views: 1181

Re: Can't get FONA 3G to respond to serial on Pi 3

I conducted further testing. The "screen" serial monitor still has strange behavior but "minicom" behaves better when I type sudo -b 115200 -o -D /dev/serial0 That gets all of the characters from the Arduino. sudo screen /dev/serial0 115200 randomly crashes and has errors. I connected pin 8 to pin 1...
by lukeserial
Tue Dec 05, 2017 4:53 pm
Forum: Troubleshooting
Topic: Can't get FONA 3G to respond to serial on Pi 3
Replies: 7
Views: 1181

Re: Can't get FONA 3G to respond to serial on Pi 3

Now I have some serial response from the Arduino on the Pi via USB using the following code. It does not echo a character it just prints hex numbers to serial in sequence. Via the USB from Arduino to Pi it works fine when I type "sudo screen /dev/ttyAMA0 115200" It prints out the numbers and does no...
by lukeserial
Mon Dec 04, 2017 8:10 pm
Forum: Troubleshooting
Topic: Can't get FONA 3G to respond to serial on Pi 3
Replies: 7
Views: 1181

Re: Can't get FONA 3G to respond to serial on Pi 3

Continuing to troublshoot my inablity to use the serial uart on my Raspberry Pi 3, I tried this test with an Arduino wired to the RX and TX pins. https://www.jaredwolff.com/blog/raspberry-pi-setting-up-serial-uart/ The Arduino will send back over serial anything typed. Except in my case, nothing com...
by lukeserial
Mon Dec 04, 2017 1:04 pm
Forum: Troubleshooting
Topic: Can't get FONA 3G to respond to serial on Pi 3
Replies: 7
Views: 1181

Re: Can't get FONA 3G to respond to serial on Pi 3

I thought that there might be a problem with the Stretch distribution so I re-imaged my SD card to the last distribution of Jessie. I followed the instructions on this link: https://raspberrypi.stackexchange.com/questions/45570/how-do-i-make-serial-work-on-the-raspberry-pi3 to enable serial communic...
by lukeserial
Mon Dec 04, 2017 12:35 am
Forum: Troubleshooting
Topic: Can't get FONA 3G to respond to serial on Pi 3
Replies: 7
Views: 1181

Can't get FONA 3G to respond to serial on Pi 3

Hello, I am new to the Pi from the Arduino world. I have a FONA 3G module that i previously had hooked up to an Arduino and is worked fine. Now the FONA is hooked up to the Pi 3 just as instructed in the following tutorial. https://www.digikey.com/en/maker/projects/cellular-gps-enabled-pi-3-fona-pi-...

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