Open Source Ecology - os-laboratory-data-logger-stuff

when you're looking for sensors to complete the data logger construction set, does that mean the ICs themselves on the finished PCB also should be open-source?

7:45 AM

if the scope of the toolset is only that the PCB designs are open source (for now), then would sourcing designs from SparkFun be a possibility?

7:47 AM

for example, there's a lot of different dev kits from SparkFun regarding things such as accelerometers, ambient light sensors, barometers, blood pressure sensors, infrared thermometers, magnetometer, motion detector, i THINK force sensor too, pH sensors, light sensors, humidity sensors, temperature probes, thermocouples, uv sensors, and a few other spectrometers

7:49 AM

sparkfun also has an I2C specification extension called Qwicc, that allows you to daisy-chain I2C-based sensors together on a common I2C bus

7:49 AM

https://www.sparkfun.com/qwiic

7:50 AM

and...actually, i suppose if you had access to a variable-scale FPGA core design, you could theoretically design ANY integrated circuit with just the building blocks of an FPGA

7:52 AM

something REALLY cool with the Qwiic connect system i think would be EXTREMELY useful in the scope of an OSE industrial laboratory, is the ability to carry unaltered I2C data over a differential pair, over a common Ethernet (RJ45 + Cat.5 and higher) at up to 100ft!

7:52 AM

https://www.sparkfun.com/products/14589

SparkFun Differential I2C Breakout - PCA9615 (Qwiic)

The SparkFun Differential I2C Breakout is the fastest and easiest way to extend the range of your I2C communication bus.

7:54 AM

i won't bother to flood the chat with linkspam redirecting to the various sensors supported directly by Qwiic, since the sparkfun.com/qwiic link lists all compatible products

7:55 AM

i don't know about how open-source SeeedStudio is with their kits, but there's also the Grove interconnect system, that ALSO utilizes the I2C Bus

7:55 AM

https://www.seeedstudio.com/category/Grove-c-1003.html

Grove - Seeed Studio Electronics

Shop Grove products from Seeed Studio,we have served 2 million makers around over 200 countries. Find newest of Grove with affordable prices and global shipping.

7:56 AM

and sparkfun creates an adapter between Qwiic and Grove

7:57 AM

SparkX, the experimental side of SparkFun, also has some experimental designs regarding new Qwiic peripherals

7:57 AM

https://www.sparkfun.com/sparkx

7:57 AM

https://www.sparkfun.com/categories/283

SparkX - SparkFun Electronics

SparkX - and more...

7:59 AM

not sure if all qwiic sensor boards share a similar form factor for interstackability, but they're definitely readily-available for setting something up very quickly with off-the-shelf components

7:59 AM

i'll do some extra digging to see if any of these are actually open-source hardware

i've never dealt with those, but did see them in spec sheets!

8:25 AM

How do they compare to CAN bus?

I2C is synchronous, CAN appears to be completely asynchronous I2C needs slave addresses, but CAN doesn't I2C is node-oriented, CAN is message-oriented, I2C has SDA (Serial Data) and SCL (Serial Clock), CAN is a differential bus I2C has 3 different speeds of operation: 100kbps, 400kbps, 3.4mbps; CAN has a variable speed starting at 250kbps, up to 1mbps

8:30 AM

I2C is also mostly used for short-distance communication between ICs on the same PCB

8:30 AM

hence, I2C Inter-Integrated Circuit

8:33 AM

i only recommend I2C based on how common it is on individual sensor ICs and other MEMS devices

How does it handle high electric/radio noise environments?

you..would...need to put a differential transceiver between nodes on the SDA and SCL lines, if there's a significant enough amount of noise between nodes

8:36 AM

the I2C protocol itself DOES have error-correction and retransmission, though

i am not the circuits person lol, so i'll leave all this up to yall on that

I2C ideally only needs two wires, while CAN needs four

ON THE NOTE OF FPGAs:

8:37 AM

http://www.axiom-project.eu/

caporali

Home - AXIOM Project

Agile, eXtensible, fast I/O Module for the cyber-physical era Goal: European-designed and -manufactured single board computer: The heart of future smart applications Flexibility: FPGA, fast-and-cheap interconnects based on existing connectors like SATA Energy efficiency: l...

8:37 AM

not sure if the PCB model is released?

so..the..axiom project...is...an FPGA..?

rpi and a fpga on one board (ish, not sure on the arm's power)

5:41 PM

or was it arduino and fpga

this channel reminds a bit of the Start Trek's Tricoder

Instead of messing with too many devices, I opted for 'Controllino Mega' (https://controllino.es/producto/controllino-mega/) to have the often I2C (

) data via TCP-Modbus accessible for real-time diagnose in Excel or Matlab. Not sure when, but I have this side project 'osr-analyzer' going on, which focuses first on a slim interface for instrumenting load cells, PIDs, AC motors, etc... (edited)

Controllino Mega | Controllino

Controllino son PLCs industriales de software de código abierto compatibles con Arduino. Compactos y flexibles, con el gran número de entradas y salidas.

9:09 PM

What makes taking samples difficult is that you actually need to intercept the system at very controlled times ... (edited)

-- osr-support --

this channel reminds a bit of the Start Trek's Tricoder

Instead of messing with too many devices, I opted for 'Controllino Mega' (https://controllino.es/producto/controllino-mega/) to have the often I2C (

) data via TCP-Modbus accessible for real-time diagnose in Excel or Matlab. Not sure when, but I have this side project 'osr-analyzer' going on, which focuses first on a slim interface for instrumenting load cells, PIDs, AC motors, etc... (edited)

I’ll look into this, seems neat!

Original message was deleted or could not be loaded.

I reported em and deleted their message. Mind if i delete this comment too or nah? (Edit: Typo) (edited)

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