Changes between Initial Version and Version 1 of mycroft_mark-2

Timestamp:

04/12/20 08:33:21 (6 years ago)

Author:

admin

Comment:

--

mycroft_mark-2

@@ +1 @@
+== Mycroft Mark II ==
+
+=== body / case ===
+The original mark2 body at [https://github.com/MycroftAI/hardware-mycroft-mark-II-rpi] was not printable on my FDM printer.
+So I used this: [https://community.mycroft.ai/t/simplified-mark-ii-body-for-fdm-printing/8248/12] or [https://github.com/guhl/hardware-mycroft-mark-II-rpi]
+
+=== Software basis ===
+I used the picroft image Picroft_Buster-Keaton_2020-01-10.img as the software basis
+
+=== Audio ===
+I had two problems related to audio.
+
+First the volume of the Adafruit MAX9744 Amplifier was very high and resulted in a general cracking and static noise when switched on.
+=== Adafruit Volume control ===
+I am controlling the volume of the MAX9744 using the CircuitPython Libraries (see [https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/installing-circuitpython-on-raspberry-pi] ).
+The things that I had to do: 
+==== Install the library ====
+- while in (.venv)
+
+{{{
+pip3 install RPI.GPIO
+pip3 install adafruit-blinka
+}}}
+==== Enable I2C ===
+I2C is not enabled by default so run and enable I2C in the Interfacing Options
+==== Python script ====
+Use this script to set the initial volume to about the half (the range is 0 to 63). Create ~/bin/ada_volume.py with the following conten
+{{{
+import board
+import busio
+import adafruit_max9744
+i2c = busio.I2C(board.SCL, board.SDA)
+amp = adafruit_max9744.MAX9744(i2c)
+amp.volume = 30
+}}}
+
+