Aug 17, 2017 If you use the Arduino IDE to program the ESP32, you might be interested in [Andreas Spiess’] latest video (see below). In it, he shows an example of. May 20, 2016. Teensy 2 - Hardware Serial: Serial1.write() not as fast as Arduino code base. Maybe not too important, but was playing around with the Teensy 2 and I am playing with AX Buss code that runs at 1mbs. I am running windows 10, 1.6.9. Looking at output on Logic Analyzer I see there is gaps of time between.

You should try out the Teensy or Teensy++ from also available from Sparkfun. Paul uses an Atmel chip (ATmega32U4) onthe Teensy that is similar to the ATmega328 used on Arduino, but it has a built-in USB interface. Paul provides support for writing Arduino code on the Teensy with the “Teensyduino” add-on for the Arduino IDE. Arduino has a serial interface between the ATmega328 and the USB chip which limits data rates to ~1000 characters per second, as pointed out above. The Teensy supports 12Mbps over USB (“Fast USB”).Paul says that he sees serial throughput of over 1Mbps. I’ve gotten over 10K multi-character samples per second in a project comparable to your test using code I didn’t even try to optimize for speed using a Teensy. But I’m using CoolTerm to read in the serial data and save to a file, and it doesn’t go up that high.

What would you recommend to use to actually see and save the incoming data? Also, thanks for the hint on sending binary data with Serial.write – I had tried formatting the Serial.print with the BIN formatter, but I understand that has more overhead. But I’m curious how to get one analog read value with the two commands (lowByte and highByte) – I guess the analogRead number is 10 bits, so that fills the whole lowByte and 2 places of the highByte, correct?

Hello, I have learned a lot from this conversation. I am doing kind of smiler project.

I used Arduino as hardware, and couple of sensor. And I interfaced with MATLAB and Coolterm both. I want to plot sensor data using MATLAB in real time and store those data in a txt file through Coolterm. But I can’t do this two parallel y. Search Military Records By Serial Number. I had to do one task, either store data or real time plot.

Because they are in same COM port. Could you tell me what should I do? And never mind, I asked this problem on reply box cause they are bit of smiler.

There are many ways to communicate with remote Arduinos. I have found that many of them hit a slightly higher price point than what I would like. Also, ethernet shields (and wifi dito?) consume many valuable hardware pins. I will describe how to communicate host to Arduino using commercially available wireless serial ports. They are cheap(ish) and only use the rx/tx pins.

The drawback is that the air-protocol isn't encrypted so I wouldn't use it for sensitive applications. I use it to control lighting.

I would be more impressed than offended if a neighbour hacked my indoor lighting. Serial ports (even wireless) are designed for point to point communication. It is possible to use in one-to many or other constellations but certaing design consideration have to be taken. My Arduino library referenced in step 5 supports one-to many. The described project is for one-way or two-way communication using (i.

If you know you will only send commands 'blindly' you can attach a transmitter to the PC end and a receiver to the Arduino. Those modules are really cheap.

Step 1: What You Need. Your arduino doesn't have to be attached to a PC but for most applications you need to have one arduino+rf connected to a computer in order to control and/or read data from the other arduino+rf units. But I suppose there could be rare situations where it would make sense to have an autonomous system where arduinos only communicate with eachother. If you have such a use case - yes, it is possible. As for how to use received data in an application - that is really hard to answer.

It is up to you. It is just data. Use it like you would any other data. Well, I never got round to using the nRF24L01+ (even though I have a bunch). I do know, however that it won't be a pug and play replacement. The module uses Serial Peripheral Interface (SPI) which works differently and is also wired in a different way. A quick search produced this link: I will also offer a bit of advise.

Since I wrote this tutorial, the world has evolved. IoT is going IP. Personally I have moved most of my own stuff to ESP8266 on WiFi, either in standalone (using IO on the ESP module) or in combination with Arduino. For comms I use MQTT.

Computer Networks And Internets Douglas E Comer Pdf Files. There are probably good tutorials on that already. If there isn't, maybe I'll get around to writing one. Good luck with your project! Thanks AbDuCt, I was looking at the Nordic 2.4ghz modules just last night and I was starting for formulate some ideas for world domination.

It's great to hear that they are a breeze to use. Also, Nordic have a pretty helpful looking Wiki about the RF that looks like it would be good to read more thoroughly when I get me some of these useful looking modules. They make pretty heavy comments about making sure that you use a smoothing capacitor to clean up the signal.

And that they should be used as 3.3v. Anyway, I'm ordering some soon! The first is one library and then there is another named Mirf. The second link is a library that allows you to link the transceivers in a binary tree like structure to create a zigbee like mesh network (good for automating a house for example). There are a bunch of tutorials on the internet what shows the usages of the libraries, the general usage is the same as standard file IO in C. There is a READ() function and a WRITE() function and the library does the rest. In assembler the transceivers are also easily controlled if you know how to communicate with them (specific sequence of pins that need to be toggled to tell the module what you're attempting to do, etc).

As for range I haven't had a chance to play with them yet, but I know people who can easily cover a pretty standard sized house. One article on the internet said that the NRF24L01+ model does around 200 meters open air. There are more beefy versions, costing 6-7 dollars per transceiver) that include amplifiers and a RP-SMA connector for external antennas to boost wireless gain which boast 1000 meters of range but I haven't seen proof of that yet. I have 10 being shipped to me right now and I am in the process of revamping a colleagues assembler code to make wireless Nintendo 64 controllers powered by an attiny2313.

Even if you only buy 2 transceivers to play around with, I highly suggest it. Anything is possible but it could proove difficult. You are right.

If you try to send it all at once you would flood the buffers. You could implement you own transfer protocol which so the receiving end would acknowledge each chunk before the next. Or you could slow it down on the sender. Shouldn't be too hard.

However, in both cases you could loose data and you would have to implement checksums and re-send in the protocol for it to be useful. To sum it up. - yes, Practical and worth while? Nice tutorial mate!! Just what i want.

But i have a problem i bought two of this modules i was able to connect one module to pc via usb to serial successfully.but unfortunately i found none of arduino example codes which can be successfully compiled so that i could send serial data wireless to the PC.these were the pages i tried and some others too but none of them worked(codes give compile errors)i am sure that i have correctly installed the libraries. Please can you help me and direct me to simple arduino code snippet so that i can send data to pc remotely from a distance. I haven't heard of any such long range trancievers. I think you would have to play around with directional antennas (maybe some version of a pringles can antenna or parabolic). If you need omni-directional range you would need high powered transcievers which would not be legal in most countries. Countries regulate output wattage. As a general rule, lower frequencies carry longer.

There is a range/speed trade-off in wireless comms. In other words, 433MHz devices have better range but at lower throughput than 2.4GHz devices. If you want unlimited range go for a GSM module.