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Assembly

• When assembling the uConsole, at step "E. Mount the Core", the CM4 module tends to unplug/disengage from the two connectors that hold it on the main board. Carefully use glue or another method to secure the CM4 to the core board.
• When placing the heat transfer putty on the CM4, between the CM4 and the case, spread the putty so that it will make approximately flat contact with the case. The Broadcom chip is a bit thicker than the adjacent chips. If needed you can scribe some shallow hash marks into the putty to make it spread more easily.

Software Configuration

• Use the external antenna rather than the CM4 internal antenna

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# wmctrl one-liners
# DISPLAY is needed if you're running from eg an ssh shell

# list all windows
DISPLAY=:0 wmctrl -lG
 
# Resize the "active" window
# dimensions are: X,Y,width,height
DISPLAY=:0 wmctrl -r :ACTIVE: -e 0,40,40,1000,500

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# x11grab from the default device at offset x=70, y=65 
ffmpeg -video_size 1280x720 -framerate 30 -f x11grab -i :0.0+70,65 -c:v libx264rgb -crf 0 -preset ultrafast -color_range 2 out6.mkv

# use x265 output encoding instead
ffmpeg -video_size 1280x720 -framerate 30 -f x11grab -i :0.0+70,65 -c:v libx265 out7.mp4

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# first, install imagemagick, eg on debian:
# sudo apt install libpng-dev libjpeg-dev libtiff-dev imagemagick
convert input_image.png -depth 1 gray:output.raw

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# Input a video ID (this is used to build an input filename) and frame to dump
video_id=$1
guess_frame=$2
# modern video formats prefer timestamps over framerates, so YMMV
frame=$(( ${guess_frame}  ))
printf "video_id: %s frame: %d \r\n" ${video_id} ${frame}

# this is a heuristic guess as to how frequently (every 250 frames) we see a keyframe
keyframe=$(( ${frame} / 250 ))

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Simple grab n build

git clone https://github.com/r4d10n/micropython-wch-ch32v307.git
cd micropython-wch-ch32v307
make -C mpy-cross

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Setup

Starting with development boards:

• esp32 s2 Saola-1. Has a WS2812 on pin GPIO18 Saola schematic
• Feather s2 has an APA102 connected on two pins ( IO45 clock and MTDO data). Feather s2 schematic
• ESP32-S2-DevKitM-1 Has a WS2812 connected on GPIO18 . Schematic

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Edit the following:

sudo vi /etc/asound.conf

defaults.ctl.card 1
defaults.pcm.card 1
defaults.pcm.device 0

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/*
 * Project etherecho
 * Description:
 * Author:
 * Date:
 * Can use eg `telnet 10.0.1.47 80` to connect to this echo server
 * Ensure your EVB has ETH_* jumpers connected.
 */

#include "Particle.h"

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1090 Support

Install prerequisites:

sudo apt-get install rtl-sdr lighttpd
sudo apt-get install build-essential debhelper librtlsdr-dev pkg-config dh-systemd libncurses5-dev libbladerf-dev
sudo apt install libhackrf-dev liblimesuite-dev libbladerf-dev