- Видео 3
- Просмотров 8 089
Davor Virag
Добавлен 31 мар 2013
Cooking PASTA: hardware how-to
This video is a complete step-by-step video cookbook on hacking an ordinary kitchen scale for USB output, thus turning it into PASTA: Platform for Acoustic STArtle!
PASTA is an open-source platform for neuroscientific research based on a hacked kitchen scale. It has been used for prepulse inhibition sensorimotor gating analysis in our original PASTA paper [1], as well as quantification of grip strength (griPASTA) [2].
Bon appétit!
References:
[1] Virag D, Homolak J, Kodvanj I, Babic Perhoc A, Knezovic A, Osmanovic Barilar J, et al. Repurposing a digital kitchen scale for neuroscience research: a complete hardware and software cookbook for PASTA. Sci Rep 2021;11:2963. doi.org/10.1038/s41598-02...
PASTA is an open-source platform for neuroscientific research based on a hacked kitchen scale. It has been used for prepulse inhibition sensorimotor gating analysis in our original PASTA paper [1], as well as quantification of grip strength (griPASTA) [2].
Bon appétit!
References:
[1] Virag D, Homolak J, Kodvanj I, Babic Perhoc A, Knezovic A, Osmanovic Barilar J, et al. Repurposing a digital kitchen scale for neuroscience research: a complete hardware and software cookbook for PASTA. Sci Rep 2021;11:2963. doi.org/10.1038/s41598-02...
Просмотров: 378
Видео
Fast PASTA: converting an HX711 module to 80 SPS
Просмотров 7 тыс.2 года назад
This video guide for hacking a readily-available HX711 load cell module for 80 SPS output, thus making your PASTA faster! For instructions on HOW TO MAKE PASTA, see: ruclips.net/video/IjeHkfuQhH0/видео.html PASTA is an open-source platform for neuroscientific research based on a hacked kitchen scale. It has been used for prepulse inhibition sensorimotor gating analysis in our original PASTA pap...
Neurići!
Просмотров 3636 лет назад
EPSP - Ekscitatorni podražaj IPSP - Inhibitorni podražaj AP - Akcijski potencijal (okidanje i nizvodni prijenos podražaja) Legenda boja: - zeleno - potencijal mirovanja - žuto, crveno - "pobuđeno" stanje, djelomična depolarizacija - plavo - "inhibirano" stanje, hiperpolarizacija - bijeli bljesak - "okidanje", akcijski potencijal
Amazing
What a vandalism to brutally cutting the pin of the chip! Just heat it with a soldering iron and lift it up with sharp blade.
Hey Davor, thanks for the video h you seem like a HX711 expert, so i hope you could help me. I tried with a slightly different board. The Jopto CJMCU-711, which is also sold under some other names. It has two pads marked rate at the lower side. It does not seem to make a difference whether I bridge those or not. Output is still 10hz. The pin 15 is also always low. Would you have any idea what I did wrong?
thanks, man!!!! did it easy, used a needle and a soldering, really fast and easy, working very well now!
Almost pulled the whole chip off to cut traces underneath it watching that other guys advice. This is way more newbie friendly. Thank you!
I'm trying to build a quick shifter for a bike. This will help a lot. Big Thanks!
Hello there, great video, I have a hx711 board that I brought, looked just like yours in the video on the amazon advert, but what I got it's slightly different where the little components are, have heard it may need resistor removing or moving to make it 80sps ? Do you think this might be true Thanks alot
Sorry, I honestly have no idea. There are many variations of these little boards, but the main principles should be the same. You likely need to trace what is connected to what either visually, or using a multimeter to get to the bottom of it.
hello man. thanks for the explanation. if i need more than 80 sps, can i increase it maybe around 500-1000 sps ?
You can get up to a maximum of 145 sps by putting a 20MHz crystal across the XI (pin14) and XO (pin13) pins. The data sheet is worth a read.
Will this fix input lag using Arduino as a game controller on PC? I have this board with a 20kg load cell and when using it on the PC it takes a second to register as well as releasing, and I need it to register immediately for a brake for sim racing
I'm copy-pasting my response to a similar question: The default sampling rate of the HX711 module is 10 SPS which does seem a bit low in terms of gaming responsiveness. I'm not sure if you'll be able to achieve satisfying performance even at 80 SPS, but I think it's worth a try. I'm not sure if there are other readily available modules like this one that, for example, sacrifice the HX711's high resolution for faster sampling rate (if you find one, let me know!). A general purpose differential ADC chip might work, but it's not as easy to wire up from scratch compared to these little modules. Regarding wire length, if you mean the USB cable length, that won't matter.
@@davorvirag if you get a minute to check this out he is using a hx711 and I read in the comments that it needs to be switched to 80hz which I'm assuming it's what you are showing us in this video. Am I correct? ruclips.net/video/GK6je_cmFFc/видео.html
@@MrSnoopaloop986 I can't find the comments that you are referring to, but, since the video also uses an HX711 module, if you want to switch it to 80 Hz/SPS, I'm certain that the modification described in this video is the one you are looking for. Best of luck!
@@davorvirag thanks for your quick response and help! I appreciate it.
Did the input lag decrese with this change?
tnks 🙋
I am getting lag in input to a computer... It appears, on pressing button it notes 0.3s late. By running on 80SPS will this solve the issue? OR long wire (1 mtr + USB cable) causing the lag?! I made a DIY handbrake for racing games using loadcell, Hx711, Arduino Leonardo Atmega32u4.
I am having the same issue it's not the long cable because I've tested a short cable and long cable and there's no difference. Have you tried this yet? I'm going to give it a try and see if it fixes the input lag. Can't drift with a slow handbrake! Lol
The default sampling rate of the HX711 module is 10 SPS which does seem a bit low in terms of gaming responsiveness. I'm not sure if you'll be able to achieve satisfying performance even at 80 SPS, but I think it's worth a try. I'm not sure if there are other readily available modules like this one that, for example, sacrifice the HX711's high resolution for faster sampling rate (if you find one, let me know!). A general purpose differential ADC chip might work, but it's not as easy to wire up from scratch compared to these little modules. Regarding wire length, if you mean the USB cable length, that won't matter.
@@MrSnoopaloop986 Yeah, if you mean the USB cable, its length won't make a difference as it's just carrying a digital protocol, so it'll work consistently up to a certain length (I think a simple cable without repeaters can safely go to at least 5 meters and likely more? Not sure specifically, but I think it's defined in the USB standards).
Did the input lag decrese with this change?
Thanks man. I have a ton of this basic boards and needed an easy way to modify.
Nice, I'm glad it was useful!
👏