I am working on loop powered instrument, max current consumption for the whole circuit must be less

I am working on loop powered instrument, max current consumption for the whole circuit must be less than 4mA. The customer is old school has trust in MSP430 and wants me to use the same.

Oonky I am working on loop powered instrument, max current consumption for the whole c...

techielew•2/17/24, 8:24 AM

What's your tech background and current job?

Ttechielew What's your tech background and current job?

onkyOP•2/17/24, 8:28 AM

Bachelor’s in Instrumentation & controls then Masters in Embedded systems. Currently working as an Application Engineer with ADlink technology, an Edge computing company.

Oonky I am working on loop powered instrument, max current consumption for the whole c...

onkyOP•2/17/24, 8:30 AM

This is personal project.

Oonky This is personal project.

techielew•2/17/24, 8:31 AM

I was going to say MSP430 isn't a typical ADLINK project

Ttechielew I was going to say MSP430 isn't a typical ADLINK project

onkyOP•2/17/24, 8:31 AM

Part time work.

Ttechielew Hey guys (especially @MCU, MPU & Kits devs), we just launched a new #polls to se...

techielew•2/17/24, 9:06 AM

Don't forget to vote on your MCU architecture of choice, devs! You have 1 week!

wafa_ath•2/17/24, 10:18 AM

Hey , i am using mqtt in iot project , i wanna ask if the publisher can switch rolls with the receiver , after the receiver get a notification (the receiver become a publisher and the publisher become a receive), do you have guys any idea how to do that ?

Wwafa_ath Hey , i am using mqtt in iot project , i wanna ask if the publisher can switch r...

Umesh Lokhande•2/17/24, 11:25 AM

Hi, @wafa_athmani , Publisher, and Subscriber both can send and receive data i.e. payload back and forth. This can be managed by the MQTT Broker so we as a client have to do nothing apart from publishing the message and subscribing to the topic.

UUmesh Lokhande Hi, @wafa_athmani , Publisher, and Subscriber both can send and receive data *i....

wafa_ath•2/17/24, 3:26 PM

Yes but can one be publisher and also subscriber to the same topic ! For example receive the message or the notification from publisher and then after became a publisher ( to the same topic)

Wwafa_ath Yes but can one be publisher and also subscriber to the same topic ! For example...

techielew•2/17/24, 3:59 PM

@LMtx

aymen ammari•2/17/24, 4:18 PM

Hi everyone I'm Aymen ammari 23 yo I have licence degree in electronic engineering currently studying and working independently and I'm honoured to be a part of this community

Saßì•2/17/24, 4:18 PM

@aymen ammari Welcome,! We're happy to have you as a DevHead. Feel free to let us know what you're working on now and a bit about your technical background.

SSaßì @aymen ammari Welcome,! We're happy to have you as a DevHead. Feel free to let ...

aymen ammari•2/17/24, 4:20 PM

I work as robotic teacher for kids I deal alot with arduino and microbit and I participate in tournaments and I also help students in their projects

Wwafa_ath Yes but can one be publisher and also subscriber to the same topic ! For example...

LMtx•2/17/24, 4:23 PM

You can both subscribe and publish to the same MQTT topic, but that is not a good design practice. Please describe your use case in more details.

aymen ammari•2/17/24, 4:26 PM

Now I'm working on IOT smart home / sick pacient control using esp32 and remotexy cloud, doed anyone worked with heart beat sensor in remotexy environment??

aymen ammari•2/17/24, 4:28 PM

Have anyone worked with Max30102 sensor let us know?

Aaymen ammari Have anyone worked with Max30102 sensor let us know?

techielew•2/17/24, 4:57 PM

What do you need to know about the MAX30102?

onkyAPP•2/17/24, 4:57 PM

Since you have said you are from PICMG I have one interested topic to discuss. This thing is going on my mind since last few months.

onkyAPP•2/17/24, 4:58 PM

In simple words-
A modular approach like PICMG for Microcontrollers.

onkyAPP•2/17/24, 4:58 PM

There are many MCU manufacturers are out there but this domain is not standardized, however this domain is very cost sensitive.

onkyAPP•2/17/24, 4:58 PM

I am already working on something like this, I cannot say as a standard. I am thinking to use PCISIG M.2 form factor for MCU.
Main reason to select this because the connector for M2 are available dirt cheap in the market. and By using just Mechanical specs of M.2 standard I can design a module of MCU and design carrier for any application.

onkyAPP•2/17/24, 4:58 PM

I am already designing a PCB prototype for this. (in my free time)

onkyAPP•2/17/24, 4:59 PM

I want to keep the form factor & same pinout then have multiple modules with any MCU from TI, STM, Microchip or anything else.
However I have limited work experience, so I am slow in the process.

Ttechielew What do you need to know about the MAX30102?

aymen ammari•2/17/24, 4:59 PM

How can I adapt its code to the ready to use remotexy code

onkyAPP•2/17/24, 4:59 PM

Let me know what is your perspective on this.

Oonky In simple words- A modular approach like PICMG for Microcontrollers.

techielew•2/17/24, 5:13 PM

Interesting question, @onky. Actually a couple years back PICMG started developing a firmware specification around IoT data models that is designed to abstract sensor-vendor-specific data formats so there can be data transparency between sensors and controllers and controllers and the rest of the infrastructure.

You can read about it here: https://www.picmg.org/industrial-iot-overview/
You can find code on the PICMG GitHub: https://github.com/PICMG

In parallel they developed a small form factor, open-source, microcontroller-agnostic platform called MicroSAM. Here are some of the high-level features:

Full industrial operating temperature range from -40C to +85C.
Power filtering and signal conditioning for embedded installations
RS422 communications link for reliable communications
Direct connectivity to a variety of sensor types (analog voltage, analog current, digital)
Latching connectors for secure connectivity
PWM output for motion control applications
Hardware interlock and trigger signals for synchronization
Small size (32mmx32mm)
Low power consumption

You can read more about it here: https://www.picmg.org/openstandards/microsam/

Depending what you are working on, how far you've gotten, and how well this aligns with your goals, I'd recommend reaching out to @DougSandy. He's the CTO at PICMG and lead both the IoT firmware and MicroSAM specification development efforts. I know he's always interested in collaboration.

Aaymen ammari How can I adapt its code to the ready to use remotexy code

techielew•2/17/24, 5:22 PM

Some good info in an instructables tutorial here: https://www.instructables.com/Pulse-Oximeter-With-Much-Improved-Precision/.

There's also a Github repo with Arduino C code: https://github.com/aromring/MAX30102_by_RF/blob/master/README.md.

A bunch of other driver support published here: https://github.com/topics/max30102

What controller are you using? I've messed around with the Feather platform in the past.

Instructables

Pulse Oximeter With Much Improved Precision

Pulse Oximeter With Much Improved Precision: If you recently visited a doctor, chances are that your basic vital signs were examined by a nurse. Weight, height, blood pressure, as well as heart rate (HR) and oxygen saturation in peripheral blood (SpO2). Perhaps, the last two were obtained from…

GitHub

Build software better, together

GitHub is where people build software. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects.

Ttechielew Some good info in an instructables tutorial here: https://www.instructables.com/...

techielew•2/17/24, 5:23 PM

I just forked into the codebase into the DevHeads repo if y'all want to riff on it: https://github.com/DevHeadsCommunity/MAX30102_by_RF

Maybe some of the @MCU, MPU & Kits developers have experience with RemoteXY. I'm unfamiliar with it.

GitHub

GitHub - DevHeadsCommunity/MAX30102_by_RF: Arduino C code for MAX30...

Arduino C code for MAX30102 pulse oximetry sensor (MAXIM Integrated, Inc.) - DevHeadsCommunity/MAX30102_by_RF

Ttechielew Interesting question, @onky. Actually a couple years back PICMG started developi...

onkyOP•2/17/24, 6:36 PM

I will check out MicroSAM thanks for the info.

Ttechielew I just forked into the codebase into the DevHeads repo if y'all want to riff on ...

aymen ammari•2/17/24, 7:49 PM

Thank you for the infos

Urlostdad•2/18/24, 4:50 AM

hello people

Urlostdad•2/18/24, 4:50 AM

Im working on an IIOT automation project with rapsberry pi
I cant seem to understand how to connect the node red dashboard to the MTQQ dashboard app

UUrlostdad Im working on an IIOT automation project with rapsberry pi I cant seem to unders...

Umesh Lokhande•2/18/24, 6:57 AM

Hi @Jd3n Create and deploy Node-Red flow using mqtt palette/node which comes by default in node-red dashboard and then connect with your choice of MQTT dashboard App using the correct MQTT server and port number. I'm not sure exactly which MQTT dashboard App you're using as there are so many in the App Store. I believe you've installed running the node-red service on RPi and trying to send sensor data to the MQTT Dashboard App. Let me know more details about what you've done so far.

aymen ammari•2/18/24, 7:12 AM

Hi everyone, what is the communication protocol used in heart beat sensor Max30102 and how does it work, what are the pins in esp32 to wire with?

Aaymen ammari Hi everyone, what is the communication protocol used in heart beat sensor Max301...

wafa_ath•2/18/24, 9:47 AM

MAX30102 heart rate sensor typically uses I2C communication protocol. The default pins for I2C are GPIO21 for SDA and GPIO22 for SCL.

Albaphet soup•2/18/24, 1:38 PM

I want to make a guitar hero live guitar bluetooth for play with clone hero on my phone, would this be easier buying a serial to bluetooth or should i remake the center pcb and add bluetooth interception? Also how would i have a usb cable read and write the controls if i wanted to wire mod it? Currently it requires a dongle that ive lost so my goal is just being able to use it again

Saßì•2/18/24, 2:09 PM

@Guillotine Welcome,! We're happy to have you as a DevHead. Feel free to let us know what you're working on now and a bit about your technical background.

SSaßì @Guillotine Welcome,! We're happy to have you as a DevHead. Feel free to let us...

Albaphet soup•2/18/24, 2:12 PM

Hello and thank you! Currently im trying to get this guitar hero live guitar to have bluetooth and most of my background is just taking things apart and fixing them, jailbreaking, software modding and slight programming knowledge in c++ cs and py

AAlbaphet soup I want to make a guitar hero live guitar bluetooth for play with clone hero on m...

nour_oud•2/18/24, 3:12 PM

I think @JeremyCook can help you with that

UUmesh Lokhande Hi @Jd3n Create and deploy Node-Red flow using *mqtt palette/node* which comes b...

Urlostdad•2/18/24, 3:29 PM

broda

Urlostdad•2/18/24, 3:29 PM

the app name is litreally mtqq dashboard

UUmesh Lokhande Hi @Jd3n Create and deploy Node-Red flow using *mqtt palette/node* which comes b...

Urlostdad•2/18/24, 3:30 PM

so I have connected 8 relays to rapsberry pi model 3 B+ And built a dashboard using the "dashboard" mod

Urlostdad•2/18/24, 3:31 PM

I got the ui and i am able to make it work perfectly
I could control the relays with no problem

Urlostdad•2/18/24, 3:31 PM

but....

Urlostdad•2/18/24, 3:32 PM

The thing Tht I cant do is control the Node red Ui from another device
I dont understand HOw I could control the ui I made using node RED from another other device

UUrlostdad The thing Tht I cant do is control the Node red Ui from another device I dont un...

Umesh Lokhande•2/18/24, 3:37 PM

Hey @Jd3n to control GPIO Pins of RPi using Node-RED with UI running on other device. You need to install ui widgets node-red-contrib-ui in node-red dashboard and use them in your node flow. I have already made a video long back to show you step by step https://youtu.be/BtNt4-v8hQw

YouTubeBINARYUPDATES

Control GPIO Pins of Raspberry Pi4 using Node-Red

Lets learn how to control GPIO Pins of Raspberry Pi4 using Node-Red.
We'll first use raspberry pi specific node palates. And later on, we'll install ui widgets like button, gauge etc. This will let us design very sophisticated node-red dashboard to control GPIO Pins of Raspberry Pi4 from Browser.

This example demonstrate controlling an LED conn...

Urlostdad•2/18/24, 3:37 PM

I tried remote red but tht didnt work

Urlostdad•2/18/24, 3:37 PM

aait

Urlostdad•2/18/24, 3:37 PM

ber

UUmesh Lokhande Hey @Jd3n to control *GPIO* Pins of RPi using Node-RED with UI running on other ...

Urlostdad•2/18/24, 3:37 PM

Imma look at this

I am working on loop powered instrument, max current consumption for the whole circuit must be less

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