Found these old .. old mini-cassettes .. wish i could read these now. The sdk units we had, had tapedrives and few other hardware devices you could play with. Like a motor you could control, which had a disc with slots in it on top. These slots could be read and counted with a sensor to determine the speed.
Also this scanned pages, from school i found. There should also be a little notbook with programs and notes ..
Having a lot of devices and running a Lab wil use a lot of energy. Now with the energy crisis in Europe, i had to take a closer look at whats using power in my house.
I notished some weird usage patterns while measuring.
I’m using a few shelly power plugs, to measure devices and powerstrips.
With these devices you can control devices connected to it. On/Off/Timer etcetera. It wil measure the power usage in watts, and it even got a temperature sensor. I like the fact that it perfectly integrates into your home automation using an extensive API. curl commands to controll, and even MQTT messaging. Intergrating in Home Assistant is a breeze.
So i was monitoring a bunch of stuff using Nodered/Grafana/Homeassistant and saw some recurring usage. But being always late to check things, i made use of my ledserver i’ve build a long time ago.
This ledserver consists of a Raspberry Pi Zero, with a led string and a API written in python.
Below is autostarted on the Raspberry
( I made this ledserver for work, it showed the status of servers and services. Beside that every colleage had a range which he could use for his own scripts. I made some little bash script templates to have led funtions standard in your bash profile.
#!/usr/bin/python
# apt-get install python-flask
#
import Adafruit_WS2801
import Adafruit_GPIO.SPI as SPI
import struct
from flask import Flask, render_template, request
app = Flask(__name__)
PIXEL_COUNT = 32
SPI_PORT = 0
SPI_DEVICE = 0
pixels = Adafruit_WS2801.WS2801Pixels(PIXEL_COUNT, spi=SPI.SpiDev(SPI_PORT, SPI_DEVICE))
pixels.clear()
pixels.show()
@app.route("/led/<deviceName>/<color>")
def action(deviceName, color):
if deviceName == 'reset':
print ("reset")
pixels.clear()
print (deviceName)
led = int(deviceName)
s = color
r = int(s[ :2], 16)
b = int(s[2:4], 16)
g = int(s[4: ], 16)
pixels.set_pixel_rgb(led, r,g,b)
pixels.show()
templateData = {
'rled' : r,
'bled' : b,
'gled' : g,
'deviceName' : deviceName,
}
return render_template('index.html', **templateData)
@app.route("/control/<controlcommand>")
def actioncommand(controlcommand):
if controlcommand == 'clear':
print("clear")
pixels.clear()
pixels.show()
templateData = {
'controlcommand' : controlcommand,
}
return render_template('index.html', **templateData)
@app.route("/range/<start>/<stop>/<color>")
def rangecommand(start,stop,color):
s = color
r = int(s[ :2], 16)
b = int(s[2:4], 16)
g = int(s[4: ], 16)
startled = int(start)
stopled = int(stop)
while (startled < stopled):
pixels.set_pixel_rgb(startled, r,g,b)
startled=startled + 1
pixels.show()
templateData = {
'rangecommand' : rangecommand,
}
return render_template('index.html', **templateData)
if __name__ == "__main__":
app.run(host='0.0.0.0', port=8080, debug=True)
Now you can control the leds with a simple curl command:
So today i made a little script to show power usage.
I’m reading the current power usage from a LS120 Youless
Youless LS120 device, which you can connect to your P1 connector.
With below bash script i’m reading the webinterface and update the ledstring. I was using this ledserver for general notification usage. Below a 2 minute hack ..
Yesterday i got two 3DConnexion 3D CAD mouses (mice) from my friend Vincent. While we where fixing his Mikrotik network i got to play with these cool devices.
I always wanted one of those, but they are quite expensive
First i tried to install the Software from 3DConnexion. It kindda worked but needed some workarounds and still wasn’t okay.
Downloaded 3dxware-linux-v1-8-0.x86_64.tar.gz (Maybe this version is TOO new, SpacePilot i a little ouder)
there is a install-3dxunix.sh, but it was made for Suse/Redhat
This program needed motif .. and a lot of libraries (libmotif/libxm)
After that some fonts xfonts-100dpi xfonts-75dpi
workaround was starting by
sudo /etc/3DxWare/daemon/3dxsvr -userName ${USER} -d usb
After that the demo program worked perfectly … but Blender didn’t After some tinkering it work a little, it was far to sensitive, and was all over the place.
Luckily i found a opensource replacement. https://spacenav.sourceforge.net/ git cloned the package, then i notished .. there is a precompiled version for ubuntu!
apt-get install spacenavd .. start the service .. and go!
i cloned the test demos (libspnav) and compiled those test programs.
apt-get install libglu1-mesa-dev
git clone https://github.com/FreeSpacenav/libspnav.git
cd libspnav
./configure
make
... fly is a nice little test program
So lets start blender
Pan tilt roll .. nice!
This wil speedup modeling, and for sure sculpting !
Some settings which worked for me .. let the tweaking begin!
UPDATE: 2022-09-29
I removed the version in the apt repository, and installed everything from git. Now i have a cool configure tool
How about a quess the picture from our photo collection?? (123580 photos .. ) So i show a random picture, and when i press ESC it will show some information about the picture … Quess the year and the event
Well i gave myself 15 minutes to program something ..
I was watching a tv show meanwhile .. but i managed to come up with this …
This script is showing a picture, when you press ESC it wil show some details.After that it will select another random picture.
Improvements : reading tags and other metadata from my photo database, to give more information.
It’s a little device you can place on your watermeter.
You get a plastic clip/holder which you can use to place the device on your watermeter. You can easily remove the device to read the values.
The device measures the little round gauge, so it has no idea what the current values are. Add the current values of your meter to the output of the device.
The device works by measuring the rotation of the red part.
By default it sends the information over the internet to a server. Your phone connects to this server and the app wil give you the graphs.
If you want your own intergration, you have to enable “local api” See image on the right. When you want realtime data, you have to connect a usb-c power supply. When using batteries, the device wil only connect to wifi once per 5 minutes, and you can’t use the API.
I wrote a little test script in bash to draw graphs using mqtt and Nodered.
Using a setup like this, i could digitize these negatives quite quickly. But they’re are all beige. (And negative ofcourse) I made a tutorial for people who need to digitize and convert non-raw black-white, color negatives, and negatives on these kind of beige film using windows.
I’m using a D7100 Nikon with a 70mm lens. The lightbox is a Haiser Slimlite Plano.
Setup your camera, focus one time, and put it on manual. Cut from a piece of black paper a frame in which you keep the negatives. (Taking a picture without, can result in weird inconsistent lighting, and will have effect on auto-leveling in Acdsee)
Take the pictures and move them to your machine.
Openup acdsee, select a picture and press CTRL-E
Crop and rotate first, else it wil have a effect on leveling!
Next press White Balance and select auto
After that press Special Effect and Negative
Still not okay
Next press Auto Levels .. and presto (Move the slider to your liking ..) Note! .. changing the order of Cropping, White Balance, Effect and Auto Levels will affect the result!
This is probably all scriptable in Linux, but this is a Windows howto.
For conversions on linux i use Freds ImageMagick scripts: ( http://www.fmwconcepts.com/imagemagick/index.php ) autolevel autowhite neg2pos negative2positive and autotone
I’ve got a ROM in my 6502 which can load programs at $0200. When running own programs i want to use IRQ’s, but my rom is also using IRQ routines. So i was wondering if i could ‘hijack’ this IRQ for own program purposes.
So i’ve altered the rom to use a vector in userspace.
CPU starts, getting vector from FFFC
Goto $8000 main ROM program
Setting a jmp routine on zero page $F0
4C C9 FF
4C C9 FF ; second time, first one will redirect
Running my program on $0200
Change first jmp C9 FF to my own IRQ part
Changed jmp vectors
4C 6E 02 ; jmp $026E (myprg)
4C C9 FF ; jmp $FFC9 (rom)
Run rest of program
All seems fine and dandy … buzzer is sounding, but no blinky leds. When flashing the rom with only my program, everything works .. So whats going on? .. anyone?
MYIRQ = $F0 ; Own IRQ vector <=================== my additions/alterations
; Below definitions for VIA 1 my loadable program uses VIA 2
PORTB = $6000 ; VIA port B
PORTA = $6001 ; VIA port A
DDRB = $6002 ; Data Direction Register B
DDRA = $6003 ; Data Direction Register A
-------------8<------- snip
PROGRAM_LOCATION = $0200 ; memory location for user programs
.org $8000
main: ; boot routine, first thing loaded
ldx #$ff ; initialize the stackpointer with 0xff
txs
; ISR redirect code <=================== my additions/alterations
sei
lda #$4C
sta MYIRQ
sta MYIRQ + 3
lda #<ISR
sta MYIRQ + 1
sta MYIRQ + 4
lda #>ISR
sta MYIRQ + 2
sta MYIRQ + 5
cli
; End ISR redirect <=================== till here
; below this the standard rom routines
-------------8<------- snip
.org $FFC9 ; as close as possible to the ROM's end
ISR: <====================== Whole ISR not my code
CURRENT_RAM_ADDRESS = Z0 ; a RAM address handle for indirect writing
pha
tya
pha
lda ISR_FIRST_RUN ; check whether we are called for the first time
bne .write_data ; if not, just continue writing
lda #1 ; otherwise set the first time marker
sta ISR_FIRST_RUN ; and return from the interrupt
jmp .doneisr
.write_data:
lda #$01 ; progressing state of loading operation
sta LOADING_STATE ; so program_ram routine knows, data's still flowing
lda PORTB ; load serial data byte
ldy #0
sta (CURRENT_RAM_ADDRESS),Y ; store byte at current RAM location
; increase the 16bit RAM location
inc CURRENT_RAM_ADDRESS_L
bne .doneisr
inc CURRENT_RAM_ADDRESS_H
.doneisr
pla ; restore Y
tay
pla ; restore A
rti
.org $fffc
.word main ; Main ROM program
.word MYIRQ ; Redirect to OWN irq vector <=================== my additions/alterations
RAM Program
; Second VIA stuff
PORTB = $5000
PORTA = $5001
DDRB = $5002
DDRA = $5003
;------------------8<-------------
; Vector pointer on zero page
MYIRQ = $F0
ticks = $00 ; 4 Bytes
toggle_time = $04 ; 1 Byte
.org $0200
start:
; IRQ REDIRECT
sei ; irq masked
lda #<irq ; get low byte IRQ routine address
sta MYIRQ + 1 ; store at $F1
lda #>irq ; get high part of address
sta MYIRQ + 2 ; store at $F2
cli ; irq enabled
; IRQ END REDIRECT
; init of program part
lda #%11111111
sta DDRA
sta DDRB
lda #$00
sta PORTA
sta PORTB
sta toggle_time
jsr init_timer
lda #$77
sta T1CL
lda #$07
sta T1CH
loop: ; loop
jsr update_led ; update led routine
jmp loop
update_led:
sec
lda ticks
sbc toggle_time
cmp #25
bcc exit_update_led
; Toggle led
lda #%01000000
eor PORTB
sta PORTB
lda ticks
sta toggle_time
exit_update_led:
rts
;-----------------------------8<------------- snip
irq:
pha
lda #$0e
sta T2CL
lda #$27
sta T2CH
inc ticks
bne end_irq
inc ticks + 1
bne end_irq
inc ticks + 2
bne end_irq
inc ticks + 3
end_irq:
pla
jmp MYIRQ + 3 ; jmp to vector which points to ROM routine ; should be $FFC9
"If something is worth doing, it's worth overdoing."
