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Yellow pitaya

A full open source electronic lab

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I would like aggregate great open tools in one box.

This lab includes:

  • a variable power supply (DPS5015);
  • a fixed power supply (LM2596);
  • an oscilloscope (redpitaya);
  • a signal generator (redpitaya).

This box also include a raspberry pi 3 with a touch screen to control the redpitaya.

View all 6 components

  • First module works fine

    Sanpi08/09/2017 at 15:03 0 comments


    The wiring is tedious and requires small finders,but that works fine :)

  • Half printed

    Sanpi08/02/2017 at 18:42 0 comments

    Another good step passed :) I print all front parts of the enclosure.

    Except a "little" omission (the hole for the screen on the right part) all fit correctly. I use the dremel to fix that instead of reprint this part because it’s long (about 14 hours) and I already planned enhancements for this part (a multimeter or buttons to control the oscilloscope).

  • Touchscreen test

    Sanpi06/12/2017 at 21:20 0 comments

    I have received the new touchscreen, it’s time to test yellow pitaya in real contiditions. It’s an important step for me, because it’s the basic idea of this project: adding a touchscreen to a redpitaya.

    This is not perfect (I currently have a huge preformance issue with data retreiving) but it’s very intuitive to use.

    The redpitaya configuration is made via ansible. The recipies are available here.

  • First print

    Sanpi06/07/2017 at 08:53 0 comments

    It’s not perfect, but it’s a good first print. The DPS module doesn’t fit correctly and the screw supports to assemble parts are not really printable. I probably review the layout of this module (the power button is too close from plugs) but I’m very surprising by this first try.

  • Enclosure

    Sanpi06/03/2017 at 14:20 0 comments
  • All hardware is arrived

    Sanpi05/28/2017 at 14:43 0 comments

    All hardware pieces are here, almost… Because the screen doesn’t work (another is on the road) and I also need a STLink for flashing the DPS 5015. But I already can assemble some pieces and create the plan for the case.

  • Redpitaya SCPI server rewritten in Rust

    Sanpi05/08/2017 at 12:27 0 comments

    During the frontend redesign, I found some bugs in the SCPI server. I was able to fix a simple buffer overflow in ACQ:SRAT? command. It’s not a big problem, because I can use the ACQ:DEC? instead. But there is more boring bugs. For example the binary output format and voltage getters (amplitude and offset) doesn’t work.

    I have already written a binding for the redpitaya C api for fun (it’s my first crate idea) thus it’s easy to create a TCP server to handle strings.

    After two weeks of work, including a big segfault fixing, I publish a new SCPI server, compatible with the legacy server.

    This server pass all scpi client tests (± f32::EPSILON of course) :

    $ cargo test -j1 -- --test-threads=1
        Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
         Running target/debug/deps/redpitaya_scpi-a9e9b34583454096
    running 42 tests
    test acquire::test::test_average ... ok
    test acquire::test::test_decimation ... ok
    test acquire::test::test_gain ... ok
    test acquire::test::test_sampling_rate_get_buffer_duration ... ok
    test acquire::test::test_status ... ok
    test analog::test::test_reset ... ok
    test analog::test::test_value ... ok
    test burst::test::test_count ... ok
    test burst::test::test_mode ... ok
    test burst::test::test_period ... FAILED
    test burst::test::test_repetitions ... ok
    test data::test::test_buffer_size ... ok
    test data::test::test_get_write_pointer ... ok
    test data::test::test_get_write_pointer_at_trigger ... ok
    test data::test::test_read ... ok
    test data::test::test_read_all ... ok
    test data::test::test_read_latest ... ok
    test data::test::test_read_oldest ... ok
    test data::test::test_read_slice ... ok
    test data::test::test_set_format ... ok
    test data::test::test_units ... thread '' panicked at 'called `Result::unwrap()` on an `Err` value: "SendError(..)"', /checkout/src/libcore/result.rs:859
    ok
    test digital::test::test_reset ... ok
    test digital::test::test_set_direction_in ... ok
    test digital::test::test_set_direction_out ... ok
    test digital::test::test_state ... ok
    test generator::test::test_amplitude ... ok
    test generator::test::test_arbitrary_waveform ... ok
    test generator::test::test_duty_cycle ... ok
    test generator::test::test_form ... ok
    test generator::test::test_frequency ... ok
    test generator::test::test_offset ... FAILED
    test generator::test::test_phase ... ok
    test generator::test::test_reset ... ok
    test generator::test::test_status ... ok
    test generator::test::test_trigger ... ok
    test generator::test::test_trigger_all ... ok
    test generator::test::test_trigger_source ... ok
    test trigger::test::test_delay ... ok
    test trigger::test::test_delay_in_ns ... ok
    test trigger::test::test_hysteresis ... ok
    test trigger::test::test_level ... FAILED
    test trigger::test::test_status ... ok
    failures:
    ---- burst::test::test_period stdout ----
    	thread 'burst::test::test_period' panicked at 'assertion failed: `(left == right)` (left: `Ok(999999)`, right: `Ok(1000000)`)', src/burst.rs:176
    note: Run with `RUST_BACKTRACE=1` for a backtrace.
    ---- generator::test::test_offset stdout ----
    	thread 'generator::test::test_offset' panicked at 'assertion failed: `(left == right)` (left: `Ok(0.30004883)`, right: `Ok(0.3)`)', src/generator.rs:418
    ---- trigger::test::test_level stdout ----
    	thread 'trigger::test::test_level' panicked at 'assertion failed: `(left == right)` (left: `Ok(0.4000244)`, right: `Ok(0.4)`)', src/trigger.rs:221
    failures:
        burst::test::test_period
        generator::test::test_offset
        trigger::test::test_level
    test result: FAILED. 39 passed; 3 failed; 0 ignored; 0 measured
    error: test failed, to rerun pass '--lib'
    
    

  • Redpitaya application redesign

    Sanpi05/02/2017 at 14:59 0 comments

    This project was born from an observation: I rarely use my redpitaya. After a little reflexion, I supect two points:

    • power on is not easier as push a button. I need to plug the redpitaya, wait a random number off seconds, open a web browser and try to connect to the default IP. Sometimes, the redpitaya gets another IP adress and I need to launch nmap to find its;
    • the oscilloscope application requires many clicks. Before starting, because some parameters isn’t saved and after during the experiments. I dislike using a mouse.

    This is why I imagine put my redpitaya in an old cathodic oscilloscope case, controlled by a touch screen maybe with some buttons. But before buying some stuff, I need to verify if I can create a new application to display oscillograms.

    I tried to undestand how create a web application, but html and javascript isn’t my favorites languages. And I found how can I remotly control my redpitaya with the SCPI protocol. Great! After writting a client in rust I have written a frondent application (also in rust).

    After one month of development, that works fine, not perfectly but good enough to command other pieces of hardware.

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Discussions

Carlos Huerta wrote 03/08/2019 at 00:46 point

Great project, I am working in doing a Labview client (scpi) the first I did is use the examples from ni.com site, blinking LED's is working fine means I have good connectivity but I am having trouble with the acquisition and generation, in the first I get TCP error 56 after the first set of samples and with the generator I get a distorted sine wave, I am wondering if this is a problem with the scpi server, what do you think? do I replace it with yours?

Thanks 

  Are you sure? yes | no

Sanpi wrote 03/08/2019 at 09:45 point

Can you create a new issue on https://github.com/yellow-pitaya/scpi-server/issues with the SCPI commands, I can try with both server.

  Are you sure? yes | no

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