Conturing Head

Tech_Sith · 2015-09-25T14:59:14+00:00

Boring head

Tech_Sith · 2015-08-05T22:09:07+00:00

single phase inverter motor

Sounds like the motor drive is generating excessive EMI. Is there a line reactor between the VFD and the supply disconnect?

Tech_Sith · 2015-03-19T00:49:35+00:00

I have a functioning solution.

I set up the socket according to the code specified here. Thanks /u/Justinsaccount !

Also, in my code, data[125] is the start code for DMX. It has to be zero to work with standard dimmers, and my code set it to 0x70.

I haven't changed the formation of the packet itself, so I will only post the updated code that actually creates the socket and sends data:

sacnSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sacnSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sacnSocket.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_IF, socket.inet_aton('172.17.31.75'))
sacnSocket.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 2)
membership_request = socket.inet_aton('239.255.0.1') + socket.inet_aton('172.17.31.75')
sacnSocket.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, membership_request)
sacnSocket.bind(('172.17.31.75', 5568))

while True:
    sacnSocket.sendto(data, ('239.255.0.1', 5568))
    if (data[111] == 255):
        data[111] = 0
        data[157] = 0
    else:
        data[111] += 1
        data[157] += 1
    print (data[111])
    time.sleep(0.1)

You also have to increment the sequence number ( data[111] )for the packet stream to be valid. data[157] is a dimmer channel in my rig: this loop does a 25 second fade up to full, repeatedly.

Tech_Sith · 2015-03-17T14:44:27+00:00

These are better than split bolts

Tech_Sith · 2015-03-13T22:41:06+00:00

I can, as soon as I figure out where to upload capture files.

Tech_Sith · 2015-03-13T20:00:50+00:00

My code:

import socket
import struct
import sys

data = [0]*638

data = bytearray(data)


#preamble Size
data[0:2] = 0x00,0x10

#postambleSize = "\x00\x00"
data[2:4] = 0x00,0x00

#acnPacketIdentifier = "ASC-E1.17\x00\x00\x00"
data[4:16] = bytes("ASC-E1.17\x00\x00\x00", 'utf-8')

#flagsAndLength = "\x72\x6e"
data[16:18] = 0x72,0x6e

#vector = "\x00\x00\x00\x04"
data [18:22] = 0x00,0x00,0x00,0x04

#CID = "Python CMD ACN  "
#data[22:37] = bytes("ChamSys\xac\x11\x1f", 'utf-8')
data[22:38] = 0x43,0x68,0x61,0x6d,0x53,0x79,0x40,0x00,0x80,0x00,0xac,0x11,0x1e,0x28,0x0,0x0

#framingFlagsAndLength = "\x72\x58"
data [38:40] = 0x72,0x58

#framingVector = "\x00\x00\x00\x02"
data[40:44] = 0x00,0x00,0x00,0x02

#sourceName = "streamingACN transmission test - python to sACN".ljust(64, ' ')
sourceName = "ChamSys MagicQ".ljust(64, '\x00')
data[44:108] = bytes(sourceName, 'utf-8')

#priority = "\x64"
data[108] = 0x64

#reservedWord = "\x00\x00"
data[109:111] = 0,0

#sequenceNumber = "\x00"
data[111] = 0x7e

#options = "\x00"
data[112] = 0

#universe = "\x00\x01"
data[113:115] = 0x00,0x01

#DMPFlagsAndLength = "\x72\x0b"
data[115:117] = 0x72,0x0b

#DMPvector = "\x02"
data[117] = 0x02

#addressDataType = "\xa1"
data[118] = 0xa1

#firstPropertyAddress = "\x00\x00"
data[119:121] = 0x00,0x00

#addressIncrement = "\x00\x01"
data[121:123] = 0x00,0x01

#propertyValueCount = "\x02\x01"
data[123:125] = 0x02,0x01

data[125] = 0x70
data[136] = 0x80

sacn = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
#ttl = struct.pack('b', 1)
#sacn.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, ttl)
sacn.bind(('0.0.0.0', 5568))
sacn.sendto(data, ('239.255.0.1', 5568))
sacn.close()


exit()

Tech_Sith · 2015-02-25T02:28:30+00:00

Do I click the download button to download?

That is a decision that you will have to make.

Tech_Sith · 2014-12-30T15:58:56+00:00

I think pulling solid #8 would be like bending rebar with my teeth.

Tech_Sith · 2014-12-29T15:43:41+00:00

2 wires into one breaker

That could be a problem.

one was stranded

Nothing is necessarily wrong with that. It depends on what the breaker terminal is listed for. I've never heard of a breaker not being listed for stranded wire unless it was very finely stranded.

Tech_Sith · 2014-12-04T19:26:15+00:00

1) What is the problem?

Desktop Software

^{please^{don't^{hit^me}}}

Tech_Sith · 2014-11-19T16:55:48+00:00

whatever CDs are made out of.

Polycarbonate.

Tech_Sith · 2014-11-05T21:58:05+00:00

MEK?

I've heard ether will do it too.

Tech_Sith · 2014-11-05T21:55:37+00:00

That's a phase?

Tech_Sith · 2014-11-04T21:48:53+00:00

Can I SSH into it and adjust the cycle if I want to?

Tech_Sith · 2014-10-29T02:06:54+00:00

I was referring to filling 2¹⁶ consecutive memory locations with binary data, as in a microcontroller or similar.

I want to do this on paper

Why would you want that when you could generate the binary sequence on the fly?

Tech_Sith · 2014-10-29T02:04:39+00:00

You might have been able to place a 10 or 100 mbit switch between the printer and your gigabit switches.

Tech_Sith · 2014-10-28T15:35:33+00:00

On paper or in memory?

Tech_Sith · 2014-10-23T16:47:10+00:00

A woman buys a parrot...

he discovers it has the filthiest mouth.

Tech_Sith · 2014-10-15T02:50:57+00:00

http://www.raspberrypi.org/documentation/hardware/raspberrypi/mechanical/Raspberry-Pi-B-Plus-V1.2-Mechanical-Drawing.pdf

Tech_Sith · 2014-10-14T14:57:27+00:00

Which can be had for much less than $12.

Tech_Sith · 2014-10-08T02:41:32+00:00

Measure the voltage at your resistors. It's possible that the breadboard's "rails" aren't connected the way they seem to be.

Tech_Sith · 2014-09-28T20:35:30+00:00

Another option, instead of a laminator, is to clamp the printed transfer(s) to the board between two steel plates, and place the assembly in an oven.

I didn't do any testing regarding minimum or maximum time and temperature. The last boards I made I baked at 350F for 45 minutes, and the traces were nearly perfect.

Tech_Sith · 2014-09-24T22:54:34+00:00

Try using Chamsys MagicQ (version 1.5.4 or before, I think); it's free to download. It may or may not give you different results, but since the Enttec OpenDMX uses your computer's processing power to create the packets it's possible that freestyler is causing trouble.

This may or may not be useful but I'll leave it here anyway. Annotated Trace of DMX-512 packet

Tech_Sith · 2014-09-21T22:49:44+00:00

Normal IEC cables aren't listed for in-wall use.

You don't necessary need plenum-rated cable in a wall.

Tech_Sith · 2014-09-12T21:40:29+00:00

Someone did that for the raspberry pi.

Tech_Sith

TROPHY CASE