Gilberto Castro Sustaita

Working in Custodia, asset tracking solution with LoRa mesh and NTN 🛰️satellite. Making tracking reliable and accessible.

[Gilberto Castro Sustaita @GilbertoCSUS]

This guy has been super busy wandering in the desert.

Check the dashboard!

Building a reliable tracker for livestock and wildlife in Custodia.

https://t.co/on6hmVo7XK

[Gilberto Castro Sustaita @GilbertoCSUS]

Super interesting paper regarding ultra low power consumption LoRa.

I just read it right before to sleep to process it better.

Check it out:
https://t.co/WP3MjTwYPu

[Gilberto Castro Sustaita @GilbertoCSUS]

I achieved 38uA sleep current, baseline of the @RAKwireless is ~30uA. I discovered a mistake in my PCB schematic that leads to an always connected back up voltage, power consuption increases between 7 to 8 uA.
I am quite satisfied with the results!!!!

[Gilberto Castro Sustaita @GilbertoCSUS]

Time for the truth, deep sleep plus RTC operation. I am programming using a RAK dap, after that I disconnect and plug the board to a Nordic PPKII

Next time I will make this easier with a jig or simply using a USB-C port, is very annoying to have to be connect and disconnect

[Gilberto Castro Sustaita @GilbertoCSUS]

Power profiler test in my custom PCB.

Let’s get down those uA

[Gilberto Castro Sustaita @GilbertoCSUS]

Tomorrow time to start to improve each individual code on power consumption.
I will be using a power profiler from nordic.

[Gilberto Castro Sustaita @GilbertoCSUS]

Continuing the RV-3028 testing and debugging, I succesfully achieved RTC persistance after removal of main battery

I am usign as a back up a non rechargeable CR1220

This will enable time persistance and scheduling of events across deep sleep periods from the MCU

[Gilberto Castro Sustaita @GilbertoCSUS]

The mistake is in the init method for the I2C connection from the “Melopero_RV3028” library, in the examples they mention to use: rtc.initDevice() and the correct is Wire.begin() and then rtc.initI2C()

[Gilberto Castro Sustaita @GilbertoCSUS]

More and more experimentation on this, now with the RTC.

I have successfully being able to read and to set and read time in the RTC module.

I also discovered some mistakes in the README from the library and the examples that @RAKwireless recommend for the RV-3028 RTC module.

[Gilberto Castro Sustaita @GilbertoCSUS]

@rdotapps @RAKwireless For both, right now is just testing in my workstation, but the ultimate goal is to make the technology fully updatable using BLE

[Gilberto Castro Sustaita @GilbertoCSUS]

I just achieved a DUF using bluetooth with a @RAKwireless 4630 custom PCB I designed.

I uploaded the firmware with my phone and I am serial monitoring using a RAK DAP in my PC.

This will allow in the future, wireless updates of firmware for animal tracking collars.

[Gilberto Castro Sustaita @GilbertoCSUS]

@Panis_Resurget @RAKwireless It actually solved my problem of putting the hardware inside the sealed electronics of an animal collar . Just thinking how to make the Bluetooth enabled all the time without consuming so much power, was thinking in a reed switch

[Gilberto Castro Sustaita @GilbertoCSUS]

@WarnerTeddy Sounds insane. What if we could made the balloon static? It will be like a cheap satellite…I guess

[Gilberto Castro Sustaita @GilbertoCSUS]

Today I got my MSc degree diploma.

Officially MSc. In Technology, Innovation and Entrepreneurship

[Gilberto Castro Sustaita @GilbertoCSUS]

@rdotapps This one has Quectel L76K, yet figuring out if I am calling properly the serial from the RUI that @RAKwireless defines, as I am using UART2 I am not sure what is the correct definition in code

[Gilberto Castro Sustaita @GilbertoCSUS]

Another day of programming and debugging my PCB.

This time for GNSS purposes

[Gilberto Castro Sustaita @GilbertoCSUS]

@Alberto38942271 @WHOOP Hahaha read the post men!

[Gilberto Castro Sustaita @GilbertoCSUS]

I was not able to connect to my RAK 4630, but just exploring with my nRF toolbox I was able to see the hearth rate of someone wearing a @WHOOP around me. Just by accident.

[Gilberto Castro Sustaita @GilbertoCSUS]

@MakeAugusta Hahahah men this is very useful, once I spent couple of hours looking for a proper one

[Stijn Spanhove @stspanho]

🏃‍♂️ I've gamified my own run so I can race my own ghost with the Meta Ray-Ban Display.

I built a web app for the glasses, loaded a previous GPX from Strava, and dropped game mechanics on top.

Pick up coins when you keep pace, sprint zones reward extra points if you push, and a mini leaderboard on the lens shows how you're tracking against your past self in real time.

Best part: it actually works. Seeing your ghost 20 m ahead is a way stronger nudge than any number on a watch. 😅

[Gilberto Castro Sustaita @GilbertoCSUS]

@WarnerTeddy Amazing, now I see better the picture. Are you using helium or The Thing Network? I work with animal tracking, I wang to understand more how does using this networks works