Arduino oscilloscope

Multimeter/Oscilloscope in your smartphone. This Digital Multimeter/Oscilloscope help you to measure:1 - Volts2 - Ohms3 - Temperature4 - The light (lx)5 - Frequency6 - Amplitude7 - Oscilloscope included8 - Sound Generator sine/square wave 0Hz - 20000Hz included(in version pro)9 - Color code resistance calculator10 - Save measuring data!!11 - Added capacitance meter from 1nF to 10000 mF12 - Inductance meter!It's easy to build, you just need:1 -A arduino uno or nano2 - Bluetooth module(HC-05 or HC-06)3 - Temperature sensor(TMP36) 4 - Some resistances.And for Oscilloscope:1 - A old headphones with 4 pins2 - Capacitor from 0.1mF to 1mF.MY WEB PAGE : watch video tutorial How to use oscilloscope: build the circuit follow this**LINK FOR DOWNLOAD SCHEMATIC: FOR DOWNLOAD ARDUINO SKETCH HERE: WEB PAGE:www.neco-desarrollo.esCouncils to improve the precision:1 - Check the voltage of 5v pin of arduino after connecting everything, it is the reference voltage to measure ohms when connecting the bluetooth module the voltage drops a bit, it can be in 4.8v, put exact value in the arduino code2 - The values ​​of the resistances must be precise2 - You must weld all the connections to avoid parasitic resistancesMultimeter/Oscilloscope try it now!

Knew how to read the battery data with an Arduino, it would be near trivial to replicate. #10 I'm sure that's exactly how they did it... beside the open source part. That's a $4 serial / i2c LCD screen soldered directly to what's likely an Arduino based microcontroller - you can see it peeking out on both sides from behind. I have one of those screens and got it working easily enough with an Arduino. If someone knew how to read the battery data with an Arduino, it would be near trivial to replicate. Sorry, I guess I didn't phrase that well. I'm curious if anyone knows the protocol that it uses (maybe I2C or SPI?). I just got my first oscilloscope, so I'll have to play around and see if I can figure anything out. If someone can figure that out, I can create the code to read and display the data.Sent from my iPhone using Tapatalk #11 Sorry, I guess I didn't phrase that well. I'm curious if anyone knows the protocol that it uses (maybe I2C or SPI?). I just got my first oscilloscope, so I'll have to play around and see if I can figure anything out. If someone can figure that out, I can create the code to read and display the data.Sent from my iPhone using Tapatalk SMBus protocol: Reading Battery Data With an Arduino Last edited: Feb 24, 2017 #12 .... That's a $4 serial / i2c LCD screen soldered directly to what's

Bottom Line: You can use your Macbook Pro’s sound card as an oscilloscope!DisclaimerThis could possibly be unsafe and result in damage to your computer or your health. I don’t know what I’m doing with electronics, I’m a total beginner, so you probably shouldn’t believe anything I write here without verification from a more credible source. Please see my formal(ish) disclaimer for more info.IntroductionWith that out of the way, I’m super pumped to say that I successfully used my Macbook Pro and a 433 MHz receiver as an oscilloscope to analyze the RF signal from a remote control for these inexpensive outlets. Having done so, I was able to replicate the RF signal and control the outlets programmatically from my Arduino! I imagine it will be equally easy to get them working from my Raspberry Pi, which will probably be the end goal.An oscilloscope is basically a tool to help you measure voltage over time. Recognizing that many types of electronics communicate with each other essentially by sending “high” and “low” voltage signals in certain sequences and for certain durations of time, the oscilloscope helps us capture and record those signals.A microphone is basically a device that turns sound waves into electrical signals, which then go to your computer’s sound card for interpretation. Because the sound card is already a device that does a great job with high frequency electrical signals, it’s a great candidate to act as a basic oscilloscope. I had read several posts on how others had used their sound cards as oscilloscopes (sources at the end), but I decided to write my own post on the process because: I’ve never heard of anyone doing it on a Macbook Pro. I ended up going with a setup that was quite a bit simpler than others have reported (though possibly less safe for that reason). I’m amazed that it worked.Equipment I ended up using: 2009 Macbook Pro Stereo audio splitter cable 1 x 10k Ω resistorSetupFor the project I was interested in, I first purchased a 433 MHz RF receiver (since the outlets I’d purchased used that frequency). Luckily, I scored an affordable kit that also had a transmitter. I used my Arduino just to provide power / ground for the receiver unit, since I didn’t have another 5v power source set up.Receiver:Transmitter:Once power and ground were wired to the Arduino, I connected a wire to the data pin on the receiver. I connected up my multimeter between this wire and ground, and then powered up the Arduino. Once everything was on, I clicked the button on the RF remote a few times to see how high the voltage was getting up to on the data pin. (Note that there are 2 data pins — I picked one arbitrarily, I’m not sure why there are two.) I planned on connecting this pin to my MBP, and I’ve read that you should have no higher than 1 volt input.Luckily the voltage was pretty low, but it was hard to tell