MakerHawk Digital Load Cell Weight Sensor HX711 AD Converter Breakout Module 5KG Portable Electronic Kitchen Scale for Arduino Scale 10Y65C52531I4NNRL04N82GG 1

For the price it's really good, accurate to slightly less than 1g (as far as i can tell up to 0.4g)Obviously this is more about the concept than accurate weighing.... I would not use it for anything that requires precision but for small hobby projects or school projects it's good (and makes you contemplate about scaling data, calibration, repeatability, zeroing, tare vs net, moving averages, etc...)I tested it with a set of weights 10g,20g,30g,100g, 200g, 500g and all combinations come out correct.(500g comes out as anything between 499.8 and 500.2, so i round it to grams).I used it with and arduino and the GyverHX711 library. I convert the input to gram (using a constant factor, likely that your coefficient will be different from mine so test out what you get to find your factor.

I might be a little early in judging this sensor/scale, but it does not seem consistent. I have it on a workbench next to a consumer digital kitchen scale. The kitchen scale readings are rock solid and unchanging while the sensor readings are all over the place.In trying to calibrate, the readings were different every cycle, so I had to basically average an arbitrary number of them.Running some sample code, the readings are all negative...sort of. They increase in count with the weight as a positive integer would, but always have a negative symbol in the output string. If it was truly a negative number, of course that number would count down back toward 0 as the weight increased. So while the symbol may be just a visual nuisance, it will probably play a little havoc with automated functions.I used a 179 gram random work box as my test weight, and the readings were the -196/197 reading in the screenshot. It sat there unmoved for those numbers.I then swapped on a screwdriver that was 79 grams. That was the -80 and -76 reading.Then I returned the 179 gram workbox to the scale, and it reported -110 to -134.In the few minutes of typing this review and googling it a little, having not touched the box or the workbench it's all on, it's now reading -120 to -116.The oddball readings in the middle there are a mystery to me...The controller polls every 5 seconds, so everything was physically stable for those readings. Either the workbox, screwdriver, or nothing was on the acrylic deck.So handle with care...Edit/Update:I get constant readings of 0.0 now, so I suspect I have broken hardware. In trying to figure it out, maybe I loosened a wire (moved it around a lot trying to stabilize the readings).I had bought this to put under my dog's water bowl to trigger a text to the whole family when the bowl was running low, and toyed with the idea of adding an automated water valve to refill it. I'd be too worried about a flood with this sensor...both of warning texts and water on the floor... :)

Everything working right out of the box is really all you can for but the material used for my scale wasn't plastic so beware of that. But otherwise, I would recommend it for easy use without soldering.

I purchased the hx711 module and arrived on time, the packaging is exquisite! The product is well connected to Arduino and accurately reads the signal from the load cell. It's worthy of praise. When I contact the seller when I have a problem with the product, they can immediately give a solution. I strongly support MakerHawk-US.

It drifts between 0.02 and 0.1 grams which is fine for most applications, but its not accurate enough for my current need. Make sure to check the specs.