off camera flash – Can I use an optical slave in a triflash bracket setup?

So there are those modifiers where you can use a triflash bracket to create a large modifier.

Normally you need for each of these radio triggers.

I wonder if it is possible to have only one radio trigger, the others an optical slave? Since it is inside the modifier, it should have no problem recognizing the initial impulse from the trigger on the radio.

Although I somehow have my doubts, the light output could be more like a speed light and then two speed light …

amazon ec2 – Creating a Nuget package in Jenkins for Windows EC2 slave is not possible. The paging file on demand is too small

Nuget package can not be created if Jenkins and Windows slave are running on request AWS EC2. This Windows slave uses WinRM and is very resource intensive.


Unhandled Exception: System.IO.FileLoadException: File or Assembly System.Core, Version =, Culture = neutral, PublicKeyToken = b77a5c561934e089 & # 39; or one of their dependencies could not be loaded. The paging file is too small to complete this process.

c: jenkins1 .nuget NuGet.targets (100,9): Error: Exception string can not be printed because Exception.ToString () failed

The Nuget package works well when we connect static AWS Windows EC2 slaves to Jenkins

I did the page break, but so far no success on the EC2 Windows slave

mysql – ERROR 1794 (HY000): The slave is not configured or could not be properly initialized

This is my my.cnf file


server_id = 1
log_bin = /var/log/mysql/mysql-bin.log
log_bin_index = /var/log/mysql/mysql-bin.log.index
relay_log = / var / log / mysql / mysql-relay-bin
relay_log_index = /var/log/mysql/mysql-relay-bin.index
expire_logs_days = 10
max_binlog_size = 100M
log_slave_updates = 1
Auto-increment increment = 2
Auto increment offset = 1
Binding address =

I clearly mentioned the server-d in my.cnf, but I get this error when I stop the slave.

Stop slave;
ERROR 1794 (HY000): Slave is not configured or could not be initialized properly. You must set at least –server-id to enable either a master or a slave. Additional error messages can be found in the MySQL error log.

Anyone can help me as soon as possible.

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mysql error: "A slave with the same server_uuid / server_id as this slave has connected to the master"

I'm testing a node.js client that connects to a mysql DB (mariadb). It works fine, but if I start this client on a different host at the same time, the first instance is disconnected with the following error. I've read some posts that suggest changing the server ID in my.cnf, but that did not help. Why do I have to change the ID of the server as both clients point to the same server?

{Error: UNKNOWN_CODE_PLEASE_REPORT: A slave with the same server_uuid / server_id as this slave has connected to the master. the first event & # 39; mysql-b
in 000024 & # 39; at 334, the last one out & # 39; mysql-bin.000024 & # 39; at 256 read event, the last one out & # 39; mysql-bin.000024 & # 39; at 334 bytes read.
at Binlog.Sequence._packetToError (/home/myapp/node_modules/mysql/lib/protocol/sequences/Sequence.js:47:14)
at Binlog.Sequence.ErrorPacket (/home/myapp/node_modules/mysql/lib/protocol/sequences/Sequence.js:96:17)
at Protocol._parsePacket (/home/myapp/node_modules/mysql/lib/protocol/Protocol.js:278:23)
at Parser.write (/home/myapp/node_modules/mysql/lib/protocol/Parser.js:76:12)
Protocol.write (/home/myapp/node_modules/mysql/lib/protocol/Protocol.js:38:16)
at socket. (/Home/myappp/node_modules/mysql/lib/Connection.js:91:28)
at socket. (/Home/myapp/node_modules/mysql/lib/Connection.js:502:10)
on Socket.emit (events.js: 182: 13)
at addChunk (_stream_readable.js: 283: 12)
at readableAddChunk (_stream_readable.js: 264: 11)
at Protocol._enqueue (/home/myapp/node_modules/mysql/lib/protocol/Protocol.js:144:48)
at Immediate._start (/home/myapp/node_modules/@rodrigogs/zongji/index.js:234:31)
at processImmediate (timers.js: 632: 19)
code: & # 39; UNKNOWN_CODE_PLEASE_REPORT & # 39 ;,
errno: 4052,
"A slave with the same server_uuid / server_id as this slave has joined the master, the first event," mysql-bin .000024, "at 334, the last event
At 256, from & # 39; mysql-bin.000024 & # 39; read last at 334 & # 39; mysql-bin.000024 & # 39; read bytes. "
sqlState: & # 39; HY000 & # 39;}
{Error: Connection lost: The server disconnected.
at Protocol.end (/home/myapp/node_modules/mysql/lib/protocol/Protocol.js:112:13)
at socket. (/Home/myapp/node_modules/mysql/lib/Connection.js:97:28)
at socket. (/Home/myapp/node_modules/mysql/lib/Connection.js:502:10)
at Socket.emit (events.js: 187: 15)
at endReadableNT (_stream_readable.js: 1094: 12)
at process.internalTickCallback (internal / process / next_tick.js: 72: 19) fatal: true, code: & # 39; PROTOCOL_CONNECTION_LOST & # 39;}

Replication – MySQL believes that master and slave have the same server ID, but not

Attempt to set up MySQL to perform one-way replication. I set the master to server_id = 1, a replication user setup, binary logging enabled, slave_server_id = 2, and connected and waiting for an event. I also use the workbench.

However, the master server has the following error …

Fatal Error: The slave I / O thread is stopped because master and slave have the same MySQL server IDs. These IDs must be different for replication to work (or the --replicate-same-server-id option must be used on the slave, but this does not always make sense, please read the manual before use).

I can not find a reason for this mistake. I've seen dozens of tutorials, manuals, and so on, and none of them tell me what's going on.

Flash – Yongnuo YN720: Can I use master and slave without connected trigger?

I bought two Flash YN720 with the understanding that I did not need a trigger to trigger both master and slave flashes. You are not sure how to set it up? I have two RF 630N triggers, but I would rather not use them. Is it possible?

This is the blurb from the manufacturer:
& # 39; There is a 2.4GHz wireless transceiver built in, which allows it to be viewed from a distance of up to 328 & # 39; or to serve as a master to directly control the mode and output of compatible flash units. In addition, it can also be used as an optical slave for multi-flash wireless setups. & # 39;

Custom Z-Wave enabled 9-endpoint slave device not visible to controller with openhab

I've developed a new Z-Wave-capable slave device from myself and is increasing the number of nodes, ie. H. 9 endpoints. But I want to test on Openhab. So I am confused how to get all the nodes openhab on, which also gives the electricity meter value. Please guide me, what should come next, so I can do with openhab controller. My work is still out, because only my firmware is ready for testing.