Play LED light sequences from csv. Control LED lights using PyDMXControl

Install: 
https://github.com/MattIPv4/PyDMXControl/tree/master


Calc fields / Variables:
- seq -> "sequence" = position (seconds) on 'timeline' starting 0
- fadein / fadeout (milliseconds) [optional/default]
- duration (seconds) 
- brightness -> 0-255 (optional, else default) [optional/default]
- "channel" --> LED/channel identifier, order as connected to DMX decoder   
 (channel = name | opendmxcontroller calls fixtures "by_name")
 
channels are sequential and fixed  
blank channels also must be added to dmx..()

Map channels (play one at a time, wait for input):    
```
 $ python3 mapchannels.py
```

run sequence:
```
 $ python3 sequence.py
```

run sequence from START cell (not from t=0):
```
 $ python3 zztest_sequence.py
```

debug (play single channel only and exit):
```
 $ python3 playsingle.py <channel/name>
```

_____

*** EDIT ("seq", "duration", optional "brightness") and play sequence: 

- edit local or online calc/csv 
- get csv -> sequence.json
```
 $ python3 getspread.py  
```

- restart service or run script

_____

check script output in terminal:
```
$ tmux a -t light 
```

---

lights.service runs sequence.py in a tmux session called "light"   
(Run outside tmux)   
[ start/stop/restart service now ]
```
sudo systemctl <start/stop/restart> lights.service
```

enable/disable service on boot
```
sudo systemctl <enable/disable> lights.service
```

check status
```
systemctl status lights.service  
```
---

*dev* service script: 

xetc_systemd_system -> lights.service  
edit here if required, and copy to /etc/systemd/system

-------

DMX512 decoder 24channel color - Dip Switch positions = start channel no. ... (for daisy chain)  

(dip switch positions)  ( <-- binary. ** Right to Left for dipsw positions)
 - board#1:  1-24 | all 'off' (0)         | 0
 - board#2: 25-48 | 1,4,5 - ON (1)        | 11001
 - board#3: 49-72 | 1,5,6 - ON            | 110001
 - board#4: 73-...| 1,4,7 - ON            | 1001001 

____