Thanks for explaining the pin differences! I wonder have you been able to benchmark and compare the differences in performance for these boards? I wonder if one performs better than the other.
Hi! I haven't evaluated their performance because, at that time (even now), I did not have proper equipment. It would be nice to have a decent multimeter, voltage reference, and signal generator. But they are costly. I could do however ranking tests. Maybe soon, after I have my finish my own ADS1256 board.
Hopefully, assuming that I used the right components and laid out the board properly. Mine also has a built-in microcontroller, so it was a bit of a challenge. Soon, we will see.
Hello! Really appreciate the video! I have a question about code compatibility with the $16 ADS1256 (blue), connecting it to an ESP32 Feather. Since there's no RESET pin on my ADS1256, and the initialize ADS1256 function relies on the RESET pin for initialization, how should I go about initializing the ADS1256? I'm using the older version of your code as a reference. Thanks!
Hi! The initializing neither relies on the reset nor on the CS, and these are carefully explained in the datasheet I provided for my library. Please check it on my GitHub. Cheers!
Thank you! Yes, that project will be very interesting (I hope, at least). I soldered the connections yesterday. I will need to finish some other stuff first, but soon, I will make some interesting demo with the strain gauges.
Haha! :D My specimens are too small even for these tiny gauges. The tensile testing machines is actually pretty OK from electronics and software perspective. It is waiting for a mechanical upgrade, but it is crazy expensive, so I am still saving up for it.
Hi, thank you for the upload this was very informative. Also I am wondering about your experiment and results using the 4 strain gauge circuit module, I was not able to find in your library.
Hi! What exactly do you want to know about that circuit? There's nothing extraordinary about it. The voltage is provided by the output of the strain gauge modules. It is still just a voltage measurement with the ADS1256.
Hi, thank you for the response. I am just trying to play with these strain gauges and ADS1256 as DAC using arduino. I am trying to setup something simple as verifying the Poisson ratio and hooks law for which I would need more than one strain gauge reading simultaneously. When I did my engineering couple of decades ago these test equipment used to cost in thousands but now theses can be bought at the price of few drinks. 🙏🏼
Yes, Poisson's ratio definitely need at least 2 strain gauges to measure the axial (longitudinal) and transversal (lateral) strains. It is definitely a doable task with the circuits I present on my channel. I agree that nowadays, even the high-tech stuff is getting more and more cheap. This ADS1256 is a good example of it. A well-designed board with a good voltage reference chip costs less than $20. If you know how to use the board, it can do amazing stuff.
@@CuriousScientist I have ordered few of the ADS1256 along with some strain gauges including several other types of transducer. I am trying to use Labview community edition for data collection and to interpret the results. I am also looking for precision resistor in case I want to build my own Wheatstone bridge. Your video tutorial has been very helpful to get me going on the track. Thank you.
Also, don't forget to get a reliable voltage source for the Wheatstone bridge. A precision voltage reference paired with an op-amp configured as a voltage follower can probably provide enough juice for the bridge. I am glad to hear that my videos were helpful for your journey.
Hello Curious Scientist, Greetings of the day! ADS1256 + STM32 embedded, which you have shown in this video and other videos is really helpful for me Now could you please enlighten me with ADC calculation? How to relate Force I need to measure using Strain gage with ADC resolution? For example, 1KN force applied on Strain gage mounted on the metal component and I will get Bridge output in mV. Now I want to understand if this mV value is acceptable by ADC or not? How to calculate/relate it? Your kind reply would help me to proceed further with ADS1256+STM32 selection. Thanks & Regards Abhilash
Hi! Put a known load on the load cell and measure the output. Repeat it with multiple known loads, so you have a set of points with load vs. ADC values (or voltages). Then you can just fit a linear on the set of points and recalculate the load for any given ADC value. Millivolts are very easy to measure with this ADC. It is a high resolution ADC and it also has a built-in amplifier.
@@CuriousScientist Hello Curious Scientist, Thanks for your kind response. I agree with you for the experimental set up. But now I am in the selection of Strain gauge and data acquisition (Transmitter & Receiver selection phase). Hence I wanted to calculate theoretically to understand Bridge output values so that I could select ADC, ESP32/8266EX/8266 for the wireless transmission of measured data. But I am here to ask you about PGA setting and range of Input voltage 24 bit ADC can accept. I have arrived at very low output voltage from the bridge which is not falling under 64 PGA setting range as well. In this case, how would you guide me? Should I use OpAmp or any other amplifier + ADS1256 with PGA? Hope you could guide me in this regard. Thanks & Regards Abhilash
Hi! You can pick some instrumentation amplifier to bring the voltage up to an appropriate level. But I am convinced that the resolution and PGA of the ADS1256 would be pretty much enough.
Hi! Thank you very much for your feedback! At this point, I don't have anything similar. It is too much paperwork with the taxes. Maybe when I'll be able to monetize the channel, I will open a Patreon too.
Thanks for explaining the pin differences! I wonder have you been able to benchmark and compare the differences in performance for these boards? I wonder if one performs better than the other.
Hi! I haven't evaluated their performance because, at that time (even now), I did not have proper equipment. It would be nice to have a decent multimeter, voltage reference, and signal generator. But they are costly. I could do however ranking tests. Maybe soon, after I have my finish my own ADS1256 board.
@@CuriousScientist Sounds good, perhaps with this type of test you may be able to advertise your board as more performant!
Hopefully, assuming that I used the right components and laid out the board properly. Mine also has a built-in microcontroller, so it was a bit of a challenge. Soon, we will see.
Hello! Really appreciate the video! I have a question about code compatibility with the $16 ADS1256 (blue), connecting it to an ESP32 Feather. Since there's no RESET pin on my ADS1256, and the initialize ADS1256 function relies on the RESET pin for initialization, how should I go about initializing the ADS1256? I'm using the older version of your code as a reference. Thanks!
Hi! The initializing neither relies on the reset nor on the CS, and these are carefully explained in the datasheet I provided for my library. Please check it on my GitHub. Cheers!
Hi, wonderful video. What type of amplifier that you use for the strain gauges? t
Hi and thanks! Check this video: czcams.com/video/qCfEjfzxZVI/video.html
Excellent tutorial! I think all was very well explained. I see you're teasing the upcoming project ;) it seems interesting
Thank you! Yes, that project will be very interesting (I hope, at least). I soldered the connections yesterday. I will need to finish some other stuff first, but soon, I will make some interesting demo with the strain gauges.
@@CuriousScientist Tensile machine v2 maybe? 🤔😉
Haha! :D My specimens are too small even for these tiny gauges. The tensile testing machines is actually pretty OK from electronics and software perspective. It is waiting for a mechanical upgrade, but it is crazy expensive, so I am still saving up for it.
Nice informative work Dear 👍
Thanks!
Hi, thank you for the upload this was very informative. Also I am wondering about your experiment and results using the 4 strain gauge circuit module, I was not able to find in your library.
Hi! What exactly do you want to know about that circuit? There's nothing extraordinary about it. The voltage is provided by the output of the strain gauge modules. It is still just a voltage measurement with the ADS1256.
Hi, thank you for the response. I am just trying to play with these strain gauges and ADS1256 as DAC using arduino. I am trying to setup something simple as verifying the Poisson ratio and hooks law for which I would need more than one strain gauge reading simultaneously. When I did my engineering couple of decades ago these test equipment used to cost in thousands but now theses can be bought at the price of few drinks. 🙏🏼
Yes, Poisson's ratio definitely need at least 2 strain gauges to measure the axial (longitudinal) and transversal (lateral) strains. It is definitely a doable task with the circuits I present on my channel.
I agree that nowadays, even the high-tech stuff is getting more and more cheap. This ADS1256 is a good example of it. A well-designed board with a good voltage reference chip costs less than $20. If you know how to use the board, it can do amazing stuff.
@@CuriousScientist I have ordered few of the ADS1256 along with some strain gauges including several other types of transducer. I am trying to use Labview community edition for data collection and to interpret the results. I am also looking for precision resistor in case I want to build my own Wheatstone bridge. Your video tutorial has been very helpful to get me going on the track. Thank you.
Also, don't forget to get a reliable voltage source for the Wheatstone bridge. A precision voltage reference paired with an op-amp configured as a voltage follower can probably provide enough juice for the bridge. I am glad to hear that my videos were helpful for your journey.
Hello Curious Scientist,
Greetings of the day!
ADS1256 + STM32 embedded, which you have shown in this video and other videos is really helpful for me
Now could you please enlighten me with ADC calculation?
How to relate Force I need to measure using Strain gage with ADC resolution?
For example, 1KN force applied on Strain gage mounted on the metal component and I will get Bridge output in mV. Now I want to understand if this mV value is acceptable by ADC or not? How to calculate/relate it? Your kind reply would help me to proceed further with ADS1256+STM32 selection.
Thanks & Regards
Abhilash
Hi!
Put a known load on the load cell and measure the output. Repeat it with multiple known loads, so you have a set of points with load vs. ADC values (or voltages). Then you can just fit a linear on the set of points and recalculate the load for any given ADC value.
Millivolts are very easy to measure with this ADC. It is a high resolution ADC and it also has a built-in amplifier.
@@CuriousScientist Hello Curious Scientist, Thanks for your kind response. I agree with you for the experimental set up. But now I am in the selection of Strain gauge and data acquisition (Transmitter & Receiver selection phase). Hence I wanted to calculate theoretically to understand Bridge output values so that I could select ADC, ESP32/8266EX/8266 for the wireless transmission of measured data.
But I am here to ask you about PGA setting and range of Input voltage 24 bit ADC can accept. I have arrived at very low output voltage from the bridge which is not falling under 64 PGA setting range as well. In this case, how would you guide me? Should I use OpAmp or any other amplifier + ADS1256 with PGA?
Hope you could guide me in this regard.
Thanks & Regards
Abhilash
Hi! You can pick some instrumentation amplifier to bring the voltage up to an appropriate level. But I am convinced that the resolution and PGA of the ADS1256 would be pretty much enough.
@@CuriousScientist Ok noted.Thanks
Definitely a useful video! Do you have a Patreon Channel?
Hi! Thank you very much for your feedback! At this point, I don't have anything similar. It is too much paperwork with the taxes. Maybe when I'll be able to monetize the channel, I will open a Patreon too.