DBM

In TTN they are no longer supporting large decoders.

I know what the decoder needs to be in TTN, it is in my DECODER function, but dont know how to execute it in the function node.

If you use inject Payload [1,2,3] RAW, it injects the raw payload that is msg.payload.payload.uplink_message.frm_payload into the decoder.

The DECODER needs to decode the raw payload and output it in msg.payload.uplink_message.decoded_payload

If you use inject Payload [1,2,3] Decoded in the flow you see how the end result needs to look like and the decoded msg.payload.uplink_message.decoded_payload

I am still learning JavaScript.

The code in the function node

I want to measure WIFI signal strength in iOS. Below would be the expectation

1. Scan and get List of Wifi
2. Connect to WiFi and measure WIFI signal strength in dBm.

Can anyone help how to do this in iOS as there are some restrictions in iOS APIs.

I'm currently trying to scan over all available channels while in monitor mode to find IP traffic on open networks around me. I noticed that IP in sniffed_packet was never true, and after some debugging, found that frames aren't being parsed properly.

I'm sniffing using this:

I have 1024 samples and I want to cut them into 32 chunks of 32 and run FFT on each one of them and plot it via a Frequency-Amplitude spectrum, I have most of the code working just the part of applying FFT to each chunk is not working, however I am able to apply FFT to the whole samples array.

I tried doing something like that:

my cosmos db has data stored per minute time intervals, I would like to query it using different intervals, depending on start date and end date. But when using the DateTimePart function, the RUs are drastically increasing. Without the datetimepart function, for a months data is 184, if I add the datetimepart function it jumps to 6000.

I tried the query like this:

The attributes in this code are supposed to be character varying in PostgreSQL but when I try to setString for every attribute it won't work so I think setString is not the right thing but I can't find the solution, any help?

org.postgresql.util.PSQLException: ERROR: column "dob" is of type date but expression is of type character varying Hint: You will need to rewrite or cast the expression. Position: 139 at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2553) at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2285) at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:323) at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:481) at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:401) at at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:164) at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:130) at backendstructure.BackEndStructure$DBM.run(BackEndStructure.java:83)

So I manually installed a locally downloaded python package by going into the folder directory and using the cmd command:

python setup.py install

After that it just installed itself normally. Using the python function help("modules") in cmd also confirmed that it was installed correctly as I can see the name being given out. The two modules are called binance_d and binance_f

I am confused with this issue. I have the following device (it is a Chinese smartwatch) with MAC address show up on blueman and bettercap but not on hcitool.

I use:

I am trying to choose a database for a newly developing application. There are so many alternatives and it’s so easy to choose a wrong one. First of all, there is a requirement to not use database servers. A required database should be a static or dynamic C++ library. The data that needs to be stored is an array of records. They vary but are fixed for a given dataset (so they can be stored in a table). The information in each row could be from several hundred bytes up to several megabytes. And a number of rows may be millions for now and expected to grow.

The index of the row could be used as a key. No need to maintain a separate key column.

Data is inserted sequentially. Read access will be performed only by iterating all the data or some segment of it sequentially (May need to iterate with steps like each 5th).

1. I don’t think that relational DBs are good feet for many reasons. a. They are mostly server-based. I know about SQLite but as far as I know, it stores data in one file which I assume may lead to issues related to maximum file size. b. We don’t need the power that SQL provides instead we would like to have more flexibility in stored data types.
2. There are Key/Value non-SQL dbms like BerkeleyDB, RocksDB, or something like luxio for lighter alternatives. The functionality they provide is more than enough for the task. And this might be the right choice however I don’t know how well they are optimized for such case where we have continuous integer keys. The associative key access (which is not required for us) may have some overhead in performance.
3. I know there are some type of non-SQL databases called “wide-column” which I am not familiar with. However, the name sounds like it is perfect for our task. All databases I can find are server of claud based. If you know dbm-like library for such type of database please advise. I am not experienced in databases so please correct me if I am wrong in any of 3 above stamens.