DIY load cell mod for G25 / G27 / G29

[@gerzsone30]

For those interested in building, the chip used is the INA122PA. There is a lot of info on the net for connection. Also a 1k trim pot and a 100nF capacitor is needed.

[@tomnorrisiv]

Rad. Thanks!

[@johnlawrencebernardo8059]

could you post a picture of the underside of the PCB?

[@gerzsone30]

@@johnlawrencebernardo8059 www.dropbox.com/s/n4cn7oo5e9ixalw/loadcell_pcb_1.png?dl=0

[@gerzsone30]

It's mirrored for ironing the print to the PCB.

[@johnlawrencebernardo8059]

@@gerzsone30 great help sir, making this within the month

[@matyasikaresz4447]

Legenda vagy Uram! Köszönjük a segítséget!

[@ledchickenfpv7164]

Well, got my 50kg load cell today and am looking forward to seeing if I can go anywhere with it. I'm breaking new personal ground here with Arduino and A to D converters and amps and whatnot. I think I finally get the idea of how it needs to be mounted thanks to your video. Wish me luck everybody! 😉😁👍

[@honeybadgerdevelopments26]

please do let us know how you fare, We've been struggling a bit over the last few days to get this working using the hx711 amplifier and arduino

[@ledchickenfpv7164]

​@@honeybadgerdevelopments26 Ok. I still have the bits sitting around, not even unwrapped in some case, but I will try to get on it tomorrow. I definitely bought an hx711 for the load cell "brake R&D project" and two things come to mind. Something about a "load cell amplifier", which might actually be what an hx711 actually is, and for some reason I'm thinking that a different kind of arduino is needed for this. Not an off the rack arduino. 🤷‍♂️ I don't know much of anything about arduino yet, and I could well be mixing up info from the different videos I watched. This is theory based on what I think I've learned, but I guarantee nothing! 😉 I'm thinking there's a specialized arduino, specifically for use with load cells. I'll know more tomorrow. I'm using this as motivation to get past the "I think I have all the parts I need for this" stage with this project. Wish me luck. If I succeed we should be able to figure out where you went off script. 😉😁👍

[@ledchickenfpv7164]

@@honeybadgerdevelopments26I haven't been able to get to it yet, but I'm hoping this evening. Could you tell us a little about where you're running into issues? It's possible you might get a pretty quick response from someone who has expertise with this stuff, or possibly me if it's a more basic issue. I don't mean to insult you by implying a "basic" problem could be holding you back. I just have no idea what your level of technical expertise is and I've been stumped by things that were well within my wheelhouse plenty of times. Sometimes it's even quite obvious, but for some reason I've developed almost like a temporary blindness to it. Getting another set of eyeballs on it usually leads to either a quick "Aha!" followed my me trying to kick myself, or an eventual realization that the problem lies elsewhere. I have one "patient" I need to get buttoned up before having a go at trying to get the load cell to talk to a PC. I *should* have a little bit more of a clue what I'm talking about by tomorrow. 🤞 For some reason YT isn't letting me post another comment, so I'll edit updates into here. YT probably thinks I'm trying to spam or cyberbully you with the multiple replies. Anyway, here's a minor update(ish): ​@Honey Badger Developments Have you seen this video? kzbin.info/www/bejne/qandoHR9m5aehdE I'm not all the way through it yet, but so far it's really easy to follow and understand. It appears the hx711 is apparently both a signal amplifier and AD converter, so I was wrong about an additional amp being needed. The arduino part is coming up, so 🤞 I can get my noggin wrapped around that bit without too much cursing. 😉🤣🤦‍♂️🤷‍♂️ to be continued...

[@honeybadgerdevelopments26]

Ye I’ve found that video, my challenge has been getting the analog output from the arduino, the challenge with the 4 wire load cell is that there are two signal wires to be used as an input. I’ve tried closing the circuit and tapping into it with an analog pin with no luck, I’ve also tried grounding one wire and using the other as the input. Analog write with the map function hasn’t yielded any joy because the readings in the serial monitor don’t change when force is applied to the load cell. I’ve tried this with a led project also where a potentiometer controls the brightness of the light with no luck either.. problem is I can only find arduino load cell projects for a scale online and it hasn’t been too helpful

[@radiowallofsound]

brilliant solution! thanks for sharing! I'll try that out!!

[@COneillCodes]

Wouldn't you want to massively stiffen or even remove the spring in the brake pedal? Having all the travel in the brake still makes it so that you're not really hitting the load cell until completely until you reach the end of the brake travel since the g27 springs are pretty weak.

[@robertvos1967]

Does it also work with fanatec elite padals? There are also potentiometers for the padals.

[@ebealienthy]

Hello, is it possible to use the HX711 AD Module? If possible, would you help me with the connections with the wires of the brake potentiometer g25? Or you can tell me the steps of the links, and the complete realization of the module? I can't find them in the links! Thanks in advance

[@azapacher]

20 kgs??? That's how much I brake my stock car at a red light

[@wowracing]

Please tell me what board you used to connect the sensor to the logitech contacts

[@LeanLauri]

Do you have the PCB layout in the correct scale? If not, what is the space between adjacent holes 2.54mm (0.1")?

[@botak333]

Hi sir how about the noise sir how to fix?

[@emds6819]

Its better use a 50kg loadcell?

[@hartsa8840]

Have anyone tried this for fanatec csl brake? Its eats 5 vdc and there is somekind of hall sensor by it own.

[@ScinnerNo1]

You have something turned backwards. In your config it shows that the brakes are fully engaged when in non depressed mode and starts to release when you press it :) Would be hard doing hotlaps with the brake fully engaged ;)

[@gerzsone30]

The amplifier works like that. Lucky you can invert inputs in game. :)

[@ScinnerNo1]

@@gerzsone30 What streangth/Kg load cell is it?

[@gerzsone30]

20kg

[@JozsefHeisenberg]

Köszönöm szépen, uram.

[@mistr3xmedia]

Hi! Marton can i ask you the sizes of the metal pieces and the placement of the holes bc im trying to do the same desing as you thank you in advance!!!

[@carlosmarrasca]

very nice, thanks for sharing

[@JoyKazuhira]

wow, even the logitech driver recognize the load cell as its own. i have 50kgs i stole from my luggage weighing, im gonna use it along with hx711 on 80hz and arduino nano. maybe ill try to find out how to make it recognizable by logitech profiler. edit: i cant make it to work with profiler, i have to add some code to use more axis at the same time because some game cant detect the brake. im going with this route, ina122pa. thanks.

[@54uhbygv]

Do you have any details on the parts used? many Thanks...

[@rahuls.392]

could you provide some kind of marking/template for making steel plates?

[@Jose_Costa.]

Hi first of all thanks for the video. I dont understand a lot about eletronics, but if i see a video i can do it. I was making a list and i would like to know if im not missing anything: Load cell INA122PA Capacitor 100nf 10k ohm variable resistor 3 pin 2.8mm male female connector Pcb pins Do i have to mess with software or it works with the stock logitech software? And could you leave the sizes of the steel plates with the hole positions and the bolts nedded? Have you changed anything inside the pedal so that it feels better? I have a g29 and the feel isn't very good. And whats the size of the pcb board? Sorry for all the questions but im a complete noob.

[@gerzsone30]

Variable resistor is 1kohm. Otherwise it's all good. No software needed. It works with the logitech profiler. I don'tbknow the sizesbof the steel plates. Holes shouldbmatch the holes on your pedal and thebload cell. I recommend 4mm thick metal.

[@Jose_Costa.]

@@gerzsone30 thank you really, the pcb board size you dont know?

[@ThalisUmobi]

Wow! Love it!

[@stealthking1269]

Hello Marton Bakos, is there any way I can buy one of your amplifier for my logitech? I am somewhat electronically challenged... LOL. Would this unit connect up to a Button Load Cell in the same way. I have seen other setups using HX711, but do not know how to then connect from the HX711 to only 3 wires from the Logitech Brake Pedal. Would appreciate any help you can provide. Thanks

[@sebsonexrexflex]

@Márton Bakos please, write me materials list and how install if you can ?

[@dalep54321]

Hi there just wondering is there a particular reason why you made a steel plate to mount to the original pedal surface? Couldn't you just drill holes and mount the load cell to the pedal without the steel plate?

[@dalep54321]

Also is that 3mm and 5mm steel? Thanks

[@gerzsone30]

Hi. I tried to avoid drilling any original parts. I think it was 4mm steel.

[@dalep54321]

Okay fair enough. Thanks for the info

[@dalep54321]

Hi so I've made a pcb and wired everything up with the components that you listed. I'm using a 3.3v supply and when i test the load cell i have 2.8v on the output regardless of the load applied. I've adjust the 1k trim pot to both ends and that doesn't make a difference to the output voltage. The voltages on each pin on the 1na122pa chip are: 1 - 0v, 2 - 1.6v, 3 - 1.6v, 4 - 0v, 5 - 0v, 6 - 2.8v, 7 - 3.3v, 8 - 0v. Any ideas as to what may be wrong? Thanks

[@gerzsone30]

@@dalep54321 Hi. Hard to tell. Could be a couple of things. Try with a 5v supply. Or try swapping the load cell wire order. Make sure pin 5 is connected to ground. Might even be that your chip is dead. Seen some cheap knockoffs arriving dead. AD627 is a good alternative for the Ina122

[@testdirver]

with the leo bodnar board would be easy, work for the 3 pedals and shifter

[@gerzsone30]

Leo Bodnar offers a similar load cell amplifier. They use the AD627a chip, but the principle is the same.

[@testdirver]

@@gerzsone30 true, also you can make a handbrake and other stuff cons: price, expensive shipping

[@juliantaffa4089]

At the end, the software reads all red for no input, then when you press down it decreases. This is bad for games that cannot invert the brake pedal signal, how do you fix it so that it inverts the signal?

[@wallthemart]

I think you can invert a ground wire. Not entirely sure about this specific board he uses but most likely it is possible.

[@CARBON333]

Invert pin2 & 3?

[@leonardoaugusto5491]

u should have added rubber damper in the brake pedal

[@wallthemart]

What are the white connectors called? I'm making my own but i don't know how to connect the loadcell wire to the potentiometer's wire

[@gerzsone30]

2.8mm 3 Pin Car Electrical Terminal Wire Connector Female＋Male Plug

[@wallthemart]

@@gerzsone30 thanks man never really seen car connectors up close before. Thanks for the sizing as well mate i found a pack of them exactly online.

[@ratfab2080]

Hello, the circuit board was too big when I printed it out. How do I get the right format? Thanks so far!

[@coxyofnewp]

Hi there, I'm just getting into sim racing and obviously would love to get a nice DD wheel and set of load cell pedals etc etc. But that will take a few months of saving .. Till then I'd love to try an idea I have using a loadcell and was wondering, 1- the chip you used is a INA122P that you used, did it need any modification besides using a Pot Variable Resistor with it.. And what POT did you use, if you could give its values be grate.. And did you notice any problems etc that you would change or did change.. PS I just noticed there are other vids in your Ch about the pedal and load cell, I will watch them too.. Many thanks if you read this and can reply !!

[@gerzsone30]

Hi there. You can wire up everything based on the datasheet of the ina122 chip. The pot used is the 3296w-1-102. The chip doesn't need any programming. It's plug&play.

[@drift0141]

Great video! I would like to do exactly the same but I can't (and don't want to make) a pcb. Can I found a done board that does the same thing or can I buy one from you? I can solder in the components

[@gerzsone30]

I don't sell these as they are probably not worth it with shipping. You might try the leo bodnar load cell amp if you're in the UK or design a pcb and order it from jlcpcb for peanuts.

[@FukU2222]

Pcbway is another option probably

[@simracingos]

very good

[@mateomarengocano8217]

Hi! Is possible to do this with a load cell plus HX711 transmisor? Or something more is needed? (I think that yes but Im really a newbie on this)

[@gerzsone30]

For a hx711 you also need a microcontroller for communication.

[@mateomarengocano8217]

@@gerzsone30 Thank you! I will be investigating and trying to do that way because all the load cells that I can get comes with an hx711.

[@vvrab4094]

Hello,interested if you sell the 2 metal plates (without electronics)

[@gerzsone30]

Hi, Usually I sell them in kit. Currently I'm out of stock for the plates.

[@vvrab4094]

@@gerzsone30 quote me please when you're back in stock for kit

[@SanderVermeer]

Do you use the original spring of the brake pedal?

[@ultimatehovado1]

I make exact same PCB, use INA122PA, 1KOhm trim, 100 uF cap, 20kg load cell and I have constant 2,8V on output pin .........there is no change even if I'm pushing really hard on the load cell, or if I try to adjust trim ......... any ideas what is wrong??? (ps: input is set to 3,3V, 0,100A from lab supply)

[@dencio1976]

figured it out yet?

[@ИгорьТимофеев-е2ь]

Здравствуйте, а можно электрическую схему,с уважением

[@yogitate5639]

how many NF of ceramic capacitors did you use?

[@gerzsone30]

100nF

[@TheKondicional]

Hi there, could you explain me what is the point having this Cell into my pedals? Not really know what this think do. Thank you

[@gerzsone30]

It measures force instead of travel distance. Imagine a small bathroom scale under you brake pedal. Stronger you press, harder you brake. :)

[@ozkanmemisoglu9085]

Can I use Gas brake clutch for all of them or should I use different ina122 for each one

[@gerzsone30]

A different ina is needed for each axis.

[@MrStimpydk]

Im trying to make this, with a 50kg cell, AD620ANZ (only one I could get), a 104 capacitor, and just found out, a trim pot W103, which I think is a 10k ohm. think I got the wrong one, I can see yours is a w102.... but is this the reason why it "flickers" when I press more than 5% pressure on the loadcell? Can I convert the 10k to 1k with resistors?

[@gerzsone30]

You can't convert the pot with resistors. You need a 1k one. Flickering should not be an issue. The pot does not make it flicker only harder to set the gain precisely. Try grounding the negative on the pcb to the rig chassis or the pc case. That can be an issue sometimes.

[@MrStimpydk]

@@gerzsone30 Thx for your quick feedback. Yaeh I most go and order a correct 1k trim pot w102

[@MrStimpydk]

Just for clarifying for those reading this in the future. a AD620 dont work it gives too much flickering. Use the INA128 or INA122.

[@elltielle]

Hi, I saw on a forum post, that you had some left for purchse, are they still available? Is 20kg in your opinion strong enough (most brakes I saw feature 50-90kg loadcells). Where did you get the loadcell from?

[@wallthemart]

Hey man, actually, the contact point will determine the force you need. Since he mounted his load cell directly where his foot steps, it does not require a high rating. Other builds position them sometimes at the bottom of the spring mechanism. This means your pedal force point is above the load cell and the higher point gives you more leverage. More leverage means more moment which may cause the load cell to read larger force values. If you are copying his build, 20kg should be enough. The trimpot is also a great addition to fine tune it physically if you prefer. But if you can find the software to tune it on pc, its possible to tune the signals there as well but i have no idea where you can find them.

[@elltielle]

@@wallthemart thanks for your reply, I ordered a 20kg cell yesterday to mount it like he did, I will run it over an Arduino, so I should be able to write some code for the settings. I also have one 40kg cell for topmounting in my basket (maybe I order it when the 20kg is to weak.

[@rpj021]

@@wallthemart DIView, DXTweak2

[@wallthemart]

I have another question sir, a few more parts arrived and I think my prebuilt amplifier will not work so i may have to make your version of the pcb control board. I'm just curious to know are the custom etchings really needed if i dont want to mount it to the pedal? Im ok with mounting it outside from the pedals as long as everything works. I have no experience in custom pcb making so i'm wondering if a prototyping stripboard + soldering can be good enough? It should work right? Just will be a bit bulky to store

[@gerzsone30]

Any solution goes for the pcb. The first onw I made was on a protoboard, too. Even dead bug style works just fine :)

[@avmdinho]

Hello good afternoon!. Can this system, chip used is the INA122PA, be used in a Thrustmaster T3PA PRO? Thank you

[@gerzsone30]

Yes, it can be used, with a different mounting solution. Use an electrical circuit breaker profile bar to mount the cell behind the t3pa.

[@avmdinho]

@@gerzsone30 Thanks my friend

[@avmdinho]

@@gerzsone30 One more doubt friend. How far away is the load cell from being found on the support, with maximum stepping on it to prevent breakage? The question is why I wouldn't know the deformation of the cell. Sorry about my English

[@gerzsone30]

If you use it reasonably, it will not bend. It is sure not meant for formula style 100kg braking, but most people won't press the pedal that hard anyway. I haven't seen one being bent so far.

[@avmdinho]

@@gerzsone30 Once again, thank you very much for your attention. I am purchasing the components and will be making my modification. Hugs

[@Max-eg1kv]

Привет друг, можешь пожалуйста скинуть ссылку на разводку платы в масштабе 100%. Я просто не могу правильно вытравить плату, по неверным размерам. Hello friend, can you please upload a link to the PCB layout at 100% scale. I just can't seem to etch the board correctly, to the wrong dimensions.

[@mattefactor]

hi, can you explain which component you use in the circuit board, and the scheme for it? thank you in advance

[@radiowallofsound]

It seems to be a rail-to-rail operational amplifier with a variable resistor (for tuning the amplification) and a small capacitor to filter out the noise from the signal.

[@radiowallofsound]

further investigation reveals it's not an op-amp, but an instrumentational amplifier (INA122), hope it helps ;)

[@mattefactor]

@@radiowallofsoundthank you! :) i found this and seems the same circuit board! :D www.instructables.com/id/Racing-Sim-brake-pedal-load-cell-interface/

[@santiagomusso3006]

@@radiowallofsound hey! I find the ina122, the variable resistor, but i dont know which capacitor are using at video

[@radiowallofsound]

@@santiagomusso3006 yes, ina122 is the right one, I just bought it today, I'm printing my board at the moment! the capacitor on this video is a 0.1uF (104 printed on it) I also added two pull down resistors on mine, 10k Ohm from ina122 pin 2 to gnd and from pin 3 to gnd. It's supposed to avoid current build up on the inputs.

[@momovidal]

Hello, I am interested in one, would you make it for me? Thanks

[@gerzsone30]

Sorry, I am not making them anymore

[@momovidal]

@@gerzsone30 Ok Thanks

[@hablaconmartin]

Can i change ina122p for 7L0272c?

[@gerzsone30]

What is that? Google does not give any results on that.

[@hablaconmartin]

@@gerzsone30 sorry TL072cp

[@diegop1804]

@@hablaconmartin ese es un amplificador operacional se necesita un amplificador de instrumentación busca videos con el tl078

[@diegop1804]

@@hablaconmartin osea compara la datashet del ina122 y el tl078

[@diegop1804]

@@hablaconmartin yo también estoy fabricando uno porque el ina122 no se consigue dónde vivo

[@laumas]

The complete video that illustrates all our Guidelines for the correct installation of Load Cells, Weight Indicators and Weight Transmitters within a Weighing System. kzbin.info/www/bejne/mYLXfJiOd6hla7s

[@Laio95]

May I ask you about the latency of the circuit? I'm working on a load cell mod but I tried to use the HX711 chip instead of the INA122PA (since it can be easly found in bundle with a loadcell for just 10€) I found out that with this chip a single reading take ~94ms, way too much for this type of project. How much latency does the INA122PA chip add? is it noticeable in game?

[@gerzsone30]

This is fully analog. Latency is not a question. Just like in your usual audio amplifier. Forget hx711. Good for a scale, but not for time critical applications

[@magificul]

there is a way to make a hx711 chip sample rate 80 hz rather than the standard 10 hz. if you are interested just let me know i can show you how

[@Laio95]

@@magificul Thanks for the info. I checked the datasheet and you're right. The problem is that I have a pre-made PCB where "RATE" is connect directly to ground plane. I can try to desolder the pin and connect VCC instead. Thanks, I'll try to use the HX711 while waiting for the instrumentation amplifier

[@magificul]

@@Laio95 yes that is exactly what you do. Desolder the RATE pin and connect that pin to the VCC pin above it. It is not that difficult if you have a little soldering experience and I can confirm that it does work.

[@perkleinschmidt6798]

Is no problem at all of using the HX711 you solder the rate pin from gnd to vcc and watch out that there is no connection more to the gnd of that pin, my rate tuned from 10 to 89 Hz (not 80) and using a ESP32 to get in the load and out through the ESP32 over the DAC command in the program and works very good. The good think is that you now can adjust your load cell directly over BT. Like Min/Max break, adjust for some platforms like IRacing the max break down, like say 80% and regardless how heavy you break it will be in this case 80%, I have also normalized the load curve since the G29 dont not have a linear break curve so this you can now so with a micro controller, then if you want I also have the possibility to change this curve after wanted Gamma value so that you have an over/under proposinal break curve and all this with your phone as your sitting in your race chair, but yes hx711 works well on 80hz for this type of game

[@XanFire_]

So I think I remember seeing you posting on anitjer site that you have a few spares to sell. What region are you from?

[@omerozdemir7645]

he used ina122p it is not ina1222pa so it is not working ina 122PA u should to buy ina122p

[@LuismiCamocha]

Hello, do you sell this?

[@gerzsone30]

Hi, I can sell one, but I have to build it. Send me a mail to bakos.simracing(at)gmail.com

[@istvanszekely8987]

Szia Márton, érdekelne a jelerősítő. Jól értelmeztem a videó alapján, hogy végül is potméterrel be lehet állítani a load cell erősségének maximumát, így nem kell fizikai határolót beiktatni? Ha igen, akkor hol lehet ilyen jelerősítőt beszerezni?

[@gerzsone30]

Szia Érzékenységet tudsz állítani vele. Fizikai határoló nem kell hozzá. A chipet kínából szoktam rendelni, a panelt meg magamnak gyártom. A chip kivételével minden van nálam hozzá.

[@istvanszekely8987]

Köszönöm az infót. Amúgy te raksz össze ilyet másnak vagyis tudnék tőled rendelni egyet? Ha igen, akkor a [e-mail] címen egyeztethetünk tovább.

[@TheTothtamas]

Szia engem is érdekelne a dolog. Ha esetleg lenne hozzá alkatrészed én is szeretnék rendelni. [e-mail] igazából nekem az is jó lenne ha az áramköri lapot és a hozzá tartozó alkatrészeket elküldenéd. Össze tudom forrasztani én is, meg egy más fajta pedálhoz lenne úgyhogy a felfogatást is én megcsinálnám magamnak.

[@matej7627]

Üdv Márton hogyan tudnálak elérni? Szeretnék vásárolni tőled vagy ha adsz el akkor mennyibe kerülne? Esetleg egy email vagy facebook?

[@gerzsone30]

Üdv, Már nem készítek többet eladásra.

[@matej7627]

@@gerzsone30 Légyszíves még abban tudnál segíteni hogy én aliról szoktam rendelni de nem találok ugyan ilyen "chip" et (nem tudom pontosan mi a neve) INA122p de az alatta lévő számsor más az számít? (pl INA122p 59AH337) Remélem érthetően leírtam. Talán még annyi hogy a kerámia kondinak mi a szerepe kihagyható az áramkörből? Lehet hülyeség amit kérdezek de kitől mástól ha nem tőled.

[@gerzsone30]

A chip INA122p azon belül mindegy. Néha megesik, hogy a kínai hibásat küld. Sajnos a minőségellenőrzésnél vannak gondok. A kondi akár ki is hagyható. Az értéke 100nF. A trimmer poti 1kOhm.

[@matej7627]

@@gerzsone30 Nagyon szépen köszönöm.

[@matej7627]

@@gerzsone30 Mit ronthatok el ha nem működik, a chip melegszik. A poti 2 lábán 0.2 volt ot mutat, Leonárdó lappal használnám a régi poti helyére raknám. Sajnos sehogy nem működik 3 at rendeltem abbol 2 vel ez a helyzet van még egy de lehet én rontok el valamit. Ha esetleg lenne valami ötleted én belefáradtam olyan egyszerűnek tűnik de hiba nem működik. :/

[@ledchickenfpv7164]

One Phillips head and one slotted screw? That's it! I'm triggered and outta here! 😜

[@hebrtt]

I watched your video today...I have a G29...I live in Brazil...Make this project for me and I'll buy it from you..I don't understand electronics! Please!

[@Czmlol]

Hail the Huns and Viktor Orban!

[@JohnKnightbridge]

Are you still making these?

[@gerzsone30]

Yes, I do. However I don't always have every part to build one.

[@JohnKnightbridge]

@@gerzsone30 I see, is it possible for you to maybe share links etc in your discription to source these parts and maybe how to put them together

[@gerzsone30]

@@JohnKnightbridge I will update the description with ebay links and a datasheet for the ic

[@JohnKnightbridge]

@@gerzsone30 that would be great, thank you very much ☺

[@RacingEsportsFamily]

@@gerzsone30 where is it?(((

[@avmdinho]

I came back to report my experience! Today I completed the PCB. I did it with a 10nF capacitor, because I didn't see the image before that shows that your plate was made with 104 100nF. I also saw another friend showing another very similar project, but with a 220nF capacitor. It worked with a 10nF capacitor, but I found that the Trimpot 10K has a reduced operating range, and is oscillating when maintaining the force in the load cell, as if it were a Bad Potentiometer. Does changing the Capacitor for another 100 to 220nF improve? I leave the video of the oscillation. kzbin.info/www/bejne/bGamqJV-d5tso6s

[@gerzsone30]

The trim pot is 1k. I remembered it wrong. Capacitor is labeled 104. You're right.

[@avmdinho]

@@gerzsone30 I really thought that the operating range of the 10k Trimpot was reduced, but I will not change it, as it is still possible to make the adjustment by the 10k. As for the capacitor, I will switch to 100nF. My question was whether it is because 10nF is mine that is generating oscillation in the measure as seen in the video. Do you know how to inform? Hugs

[@avmdinho]

​ @Márton Bakos .. Here's my project. I put your link in my description as inspiration. Thanks . kzbin.info/www/bejne/gprTmJhujs51bc0

[@hablaconmartin]

Hi, works with 3,2v for g29?

[@gerzsone30]

Yes