But it’s actually an extremely simple solution. In fact, the conclusion you came up with is in-line with all the information out there. Hi Paul… To be honest I couldn’t find any tutorials to explain how to program/upload sketches with the HC-05. Quote from: gabenix on Feb 15, 2014, 02:18 pm A way of resetting the Arduino to accept firmware uploads The configuration step is a one-time deal once the HC-05 is configured, it does not need to be done again unless the application requirements change. The reason is that several AT commands must be used in order to configure the HC-05 correctly for wireless Arduino program upload, and (as I understand it anyway), AT commands can only be communicated to the HC-05 via it’s hardware serial lines, and only when the HC-05 is in ‘Command’ or ‘AT’ mode. This part is discussed and demoed in many tutorials, but the piece that is almost always missing is why you need to have this link in the first place. A serial link between the PC, the Arduino and the HC-05 Don’t know if that is the right thing, but…. In this last iteration, I found that I could remove the two ‘incoming’ COM ports and use just the ‘outgoing’ one. As another poster mentioned, the pairing mechanism creates multiple ‘outgoing’ and ‘incoming’ COM ports, and it’s hard for me to figure out which to use. Here’s a link to a tutorial on pairing with the HC-05, and here’s another. I plan to use this with my Dell XPS15 9570 laptop, and I can pair with the HC-05 no problem. The HC-05 is a generic Bluetooth device, and as such is compatible with just about everybody’s Bluetooth setup – phones and PC’s. A serial connection between the HC-05 and Tx/Rx0 on the microcontroller – more about this later.A way of resetting the Arduino to put it back into programming mode, so the new firmware can be uploaded.My tutorial uses the Mega 2560, so I use Tx/Rx1 (pins 18/19) for the Arduino-to-HC-05 link This part is also well established, and the Arduino-to-HC-05 link can be done with either a hardware port (as with the Mega 2560) or a SoftwareSerial port using the SoftwareSerial library. A serial link between the PC and the Arduino and between the Arduino and the HC-05.A wireless link (obviously) between the PC and the HC-05.In order to remotely program an Arduino using a HC-05, the following basic parts are required: I found some posts claiming to have succeeded in remotely programming an Arduino using a HC-05 module, but the information was sketchy and incomplete, so I decided I would try and pull all the various sources together into a (hopefully) more complete tutorial for folks like me who want to use a HC-05 module for this purpose. However, I have been playing around with the cheap and small HC-05 Bluetooth module, and decided to see if there was maybe a way to use this module as a replacement for the Wixel.Īs I usually do, I started with LOTS of web research. On my Wall-E2 robot, remote programming/telemetry is accomplished using the very nice Pololu Wixel Shield. When I got the robot put together and started testing the motors, I realized I needed a way to remotely program the Arduino controller and remotely receive telemetry, just as I currently do with my 4-wheel Wall-E2 robot. The same can be done with the standard ATmega328p board, which has more pins and flexibility compared to the ATtiny85, however the ATtiny85 is advantageous because of its small profile and low power capabilities.As part of my recent Wall-E2 Motor Controller Study, I reincarnated my old 2-motor robot as a test platform for Pololu’s ’20D’ metal gear motors. And in the next section, the opposite way of communication will be explored: smartphone control of the ATtiny85. This, however, will be left for another time. With a Raspberry Pi and a few ATtiny85 nodes, a similar system could be contrived. This type of IoT node could be integrated into a group of nodes, perhaps with a base station receiver, which acts as a connected system, similar to the Amazon Alexa or Google Home. This ultimately allowed us to send temperature and humidity data read by the ATtiny85 to the smartphone. The BLE module allowed back and forth communication between the ATtiny85 and the smartphone. Then, I used a CC2541 Bluetooth Low Energy (BLE) module to communicate with an iOS device using the BLExAR app. First, I recalled some of the basic process involved in burning the bootloader to the ATtiny85 and using the Arduino board as an in-system programmer (ISP). In this tutorial, the ATtiny85 was reintroduced, this time as a Bluetooth-enabled device. ATtiny85 DHT22 + BLE sender #include #include SoftwareSerial ble_device ( 0, 1 ) // BLE TX-> ATtiny85 PB0, BLE RX-> ATtiny85 PB1 DHT dht ( 4, DHT22) // select DHT22 and comm on PB4 void setup ()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |