Showing posts with label Bluetooth. Show all posts
Showing posts with label Bluetooth. Show all posts

Sunday 25 September 2016

UFO talks to Robot - part two

In part one of this series of posts, the project to get Consumable Robotics UFO and Dimm robot was started but focussed on the UFO kit. The goal being for some action on Dimm to trigger a series of messages being passed between the two of them.

In this post, the focus moves to Dimm and the setting up the actions leading to the messaging.

Stage 1 Build
Using the Micro:bits port 0 (as part of the Dimm robot) for the input from the light sensor, which is included in the kit (Red lead going to 3v and the black lead going to GND). Just to note the less light there is the higher the value on the sensor.




Stage 2 Code
Micropython programmed through the Mu editor (see below)

If light levels are high then :
      scroll a message saying "calling UFO" 
      send the code "dimm" via bluetooth.
otherwise: 
      scroll a message saying "I can't see"
If it recieves "ufo" via bluetooth :
      display "Hello, UFO called me"

Micropython code
import radio
from microbit import pin0, pin1, display, sleep

radio.on()

while True:
   incoming = radio.receive()
   if incoming == 'ufo':  
      display.scroll("Hello, UFO called me", 75)
   if pin0.read_analog()<175:
        display.scroll("calling UFO")
        radio.send("dimm")
   else:
        display.scroll("I can't see")

Stage 3 Testing

Video below shows it in action including what happens when the light (in this case a torch) shines on the sensor connected to Dimm; a message is sent and picked up by the UFO kit (LEDs flash and the message saying "DIMM calling" scrolls  across the UFO LED array - see UFO talks to robot - part one for more details). A message is sent back from the UFO kit and on Dimm's LED array the message "Hello, UFO called me").
If the light levels are too low then the message "I can't see" scrolls across Dimm's LED array.






As an aside, the Dimm robot still reminds me, a little, of a colourful, friendly, Ood from Dr Who with all the leads hanging out of the 'mouth' - think that is geeky I know.




All opinions in this blog are the Author's and should not in any way be seen as reflecting the views of any organisation the Author has any association with. Twitter @scottturneruon

Friday 31 July 2015

Lego Mindstorms – Sentry Robots


Sameer Kumar Shrestha, Northampton

The report presents the dissertation on title Prototype of Sentry Robots for Advanced Security which includes the use of LEGO robots showing interaction between each other with the help of wireless communication medium in Bluetooth. The purpose of the work is to build a communication between multiple LEGO robots using the wireless technology. For this task, the NXT version of LEGO Mindstorms has been selected. It is because there is need of complex communication which is possible through wireless medium such as Bluetooth and also a suitable processing device for the proposed task which is present in the LEGO Mindstorms NXT. The report has also focused on the background information about the NXT system and its great flexibility with LeJOS NXJ as the programming platform. The outcome is the implementation of developed work with the use LEGO Mindstorms NXT and the LeJOS NXJ as programming platform. The task was approached with one LEGO NXT robot maintaining the distance between the object in the environment and searching the object by rotating in case of lost. After the completion of the first task, the next task was to study the communication behavior of multiple robots communicating with each other to fulfill the same job. For this, three NXT robots were taken and programmed in such a way that they form the shape of triangle and keep tracking the object.  All three of them send and wait for the information from each other and process this information to produce a suitable output, i.e. to respond to the action from each other. Thus, it was found that the implementation of several processes to multiple LEGO based communication had faults, due to the technical hitches with the communication technology and limitations of the NXT systems.





All opinions in this blog are the Author's and should not in any way be seen as reflecting the views of any organisation the Author has any association with.

ChatGPT, Data Scientist - fitting it a bit

This is a second post about using ChatGPT to do some data analysis. In the first looked at using it to some basic statistics  https://robots...