What did you build today (Pictures) ?

[FotoFieber]

Prototyping my netatmo replacement device. It has an led strip that can simulate a lighouse, a rainbow or a fireplace...
(If not used only for fun, it should warn you, if there is too much CO2 in the air.)

[mfalkvidd]

Today I have spent a few hours trying to eradicate the confusion between MySensors' different message acknowledgements. See https://github.com/mysensors/MySensors/issues/1103 and https://forum.mysensors.org/post/34263 for details.

 core/MyGatewayTransport.cpp                |  11 ++++++-----
 core/MyMessage.cpp                         |   8 +++++++-
 core/MyMessage.h                           |  31 ++++++++++++++++++------------
 core/MyOTALogging.cpp                      |   2 +-
 core/MyProtocol.cpp                        |  16 ++++++++--------
 core/MySensorsCore.cpp                     |  41 ++++++++++++++++++++-------------------
 core/MySensorsCore.h                       | 114 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------------------------
 core/MySigning.cpp                         |   4 ++--
 core/MySigning.h                           |   2 +-
 core/MyTransport.cpp                       |  20 +++++++++----------
 core/MyTransport.h                         |   4 ++--
 examples/SecureActuator/SecureActuator.ino |   2 +-
 12 files changed, 147 insertions(+), 108 deletions(-)

I have also updated https://www.mysensors.org/download/sensor_api_20 to use echo instead of ack when describing the echo function. That page didn't have information on the return value for send, present, reqestTime, etc so I added info on the return value as well.

Reference: https://github.com/mysensors/MySensors/pull/1292

[mfalkvidd]

When doing the change above, i noticed that after I created https://github.com/mysensors/MySensors/issues/1107 the number of undocumented MySensors keywords has more than doubled!

The plan was to let the MySensors butler check for missing keywords as soon as the few remaining keywords were documented. If I add the check on the existing code, the butler wouldn't allow any commits which would hinder development. But since no-one has documented the missing keywords in over a year, I decided to blacklist the missing keywords and add the check anyway. The new check will give developers a list of new missing keywords, if they add any, so they can be documented.

Reference: https://github.com/mysensors/MySensors/pull/1293

[mfalkvidd]

I've also submitted documentation updates for clarifying MY_RX_MESSAGE_BUFFER_FEATURE limitiation on esp8266 and renaming RadioSetting to TransportSetting for https://www.mysensors.org/apidocs/group__RadioSettingGrpPub.html

References:
https://github.com/mysensors/MySensors/pull/1296
https://github.com/mysensors/MySensors/pull/1295

[franz-unix]

Today I have finished my d-diot board:

The board is part of the d-diot project (see my other post)

[Fanfan]

My 3V Node (Atmega328P 1MHz), embedded NRF24L01+ with ceramic antenna, ATSHA256, AT25DF512, BME208, LED, Battery monitoring, ICSP, FTDI, Castelizable, Breadboardable.

[monte]

@fanfan nice! How is the signal compared to stock nrf24 modules? How much for antenna?

[Fanfan]

@monte A little bit less, but not a lot. I still need to improve the PCB (better castelization tracks, remove diodes, ...) and this should be ready to be copied/used.

[berkseo]

Today finished with the HW part of the new device

https://youtu.be/X1_tU14Vo5A

[Laran]

@mfalkvidd
Looks impressive!

[berkseo]

Today finished new device:

Video:

https://youtu.be/DVpDjXjeUKg

[franz-unix]

Today.... This MQ2 gas sensor with Neopixel RGB lamp on top and a capacitive touch button under the circle mark on the front.

It is part of the d-diot project. The files of the 3d-printable case are available in Thingiverse.

The firmware is available here, the wiki page is under construction.

In the next weeks I will try to print it in wood... Just to increase the WAF :wink:

[berkseo]

My new micro-sensor water leak ready. Powered by NRF52832-CIAA

cr2032, ... ~3μA consumption

[bjacobse]

Love to to watch all you creative designs :-)

[berkseo]

Pro version of water leak sensor, for very very hard to reach and remote places :). Version with amplifier.

[Nca78]

@berkseo what's the range improvement with amplifier ?
From my experience with nrf24 the amplifier + ceramic antenna was not giving great results.

[berkseo]

@nca78 said in What did you build today (Pictures) ?:

what's the range improvement with amplifier ?
From my experience with nrf24 the amplifier + ceramic antenna was not giving great results.

A few months ago, when testing, I received about 200 meters of stabilized power from the power bank. While this device was tested for 30 metres. There are problems with receiving the delivery confirmation, the device is guaranteed to transmit, but does not receive the delivery confirmation(sometimes). I think it's linked to my gateway, it has the usual radio module nrf24l01+. Of course we are talking about dc-dc-mode :)

[boozz]

@berkseo

I do not want to be too offensive, but it seems to me as if your skills in electronics and 3D-printing is way better developed than your trust in the plumbing :sweat_smile:

Now for the serious part: how often do you experience water leaks? And how long do the batteries in this design last?

Boozz

[gohan]

@boozz serious water leak heppened once in 40 years

[boozz]

@gohan
I was referring to @berkseo 's situation and images/examples. I just wondered why this person would put this amount of effort in creating a device that would probably not be functional at the moment it should be functional. I'm just thinking about corrosion of the pcb, a drained battery, change of properties of the 'sensor' due to time-effects etc.
Do not misunderstand me: I'm absolutely enthousiastic about this device (and I'm impressed by how small it is and the design), but I'm a bit concerned about the effects that could negatively affect the behaviour of it.