David dmalawey

💭

performing kaizen

Mechanical Engineer who has lost his way.

dmalawey / .asoundrc

Created November 22, 2019 19:13

alsamixer configuration file for home directory on beaglebone

dmalawey / adafruit_pwm_scuttle.py

Last active November 26, 2019 23:26

remo mods for Scuttle Robot

	# This is the SCUTTLE replacement for the adafruit_pwm.py file
	# Use this program to overwrite the original adafruit_pwm.py contents.

	def setup(robot_config): # setup is a required function for the selected hardware program
	return

	# A function for sending command to a file in the temporary folder
	def tmpFile(value): # this function takes a 2-element array called val
	txt = open("/tmp/commandFile.txt",'w+') # file with specified name
	txt.write(str(value))

dmalawey / copy_of_button.py

Created November 19, 2019 22:21

direct copy of button.py on the beaglebone blue image.

	#!/usr/bin/env python
	# Reads the PAUSE button using interupts and sets the LED
	# Pin table at https://github.com/beagleboard/beaglebone-blue/blob/master/BeagleBone_Blue_Pin_Table.csv

	# Import PyBBIO library:
	import Adafruit_BBIO.GPIO as GPIO
	import time

	button="P8_9" # PAUSE=P8_9, MODE=P8_10
	LED ="USR3"

dmalawey / findValidScanPoints.py

Created November 10, 2019 01:03

reconditioning of lidar readings and practice with numPy

	# the Lidar returns some error values when it can't get a measurement.
	# any value below 16mm indicates a bad reading or other problem.
	# this code is practice for trimming the bad readings out of the array
	# containing distances & angles.

	import numpy as np
	np.set_printoptions(suppress=True)

	# create an array with some distances which returned invalid (ie 0, 0.002)
	scan= np.array([ \

dmalawey / L2_vector.py

Created November 5, 2019 21:24

code in progress for manipulating vectors

	# Handling distance vectors in the robot coordinate frame

	# Import external libraries
	import numpy as np
	from numpy import exp, abs, angle
	import time

	# Import internal programs
	import L1_lidar as lidar

dmalawey / streaming error report

Created October 24, 2019 16:22

streaming error report for video on beaglebone blue

	I have followed both the guided installation and manual installation of the remotv controller on a Raspberry Pi and was able to control a robot successfully. I am now trying to get the remotv controller to run on a BeagleBone Blue which has not been successful. When I run the controller.py program, remo.tv says the robot is online and only streams audio while the video stays black. I have checked that the webcam does show up on /dev/video0 which is also what I have set in my controller.conf file. When I run the program I get this output:
	debian@beaglebone:~/remotv$ python controller.py
	04:48:27 - controller.py : RemoTV Controller Starting up
	modprobe: FATAL: Module bcm2835_wdt not found in directory /lib/modules/4.14.71-ti-r80
	aplay: main:788: audio open error: No such file or directory
	04:48:29 - controller.py : RemoTV Controller Started
	04:48:29 - controller.py : Unknown event type

	Video does not stream but audio does.
	Also as a comparison, I connected to remo.tv using a raspberry pian and had success str

dmalawey / NodeRed_10.08

Created October 8, 2019 12:40

NodeRed code for telemetry.py plus extras

dmalawey / telemetry.py

Created October 8, 2019 12:38

Telemetry outputs from SCUTTLE to nodeRed

	# data output functions to txt files for NodeRed and MQTT

	# Import external programs
	import numpy as np # for array manipulation
	import time # for keeping time

	# Import internal programs
	import L1_encoder as enc
	import L2_log as log
	import L2_heading as head

dmalawey / myflowExported.txt

Created September 26, 2019 01:27

export a flow for example for lab 4

dmalawey / myNodeRedLab4

Created September 25, 2019 21:42