Radio controlled microbit Robot Unicorn

In a previous post a robot unicorn was built from a kit (Do it Kits https://doitkits.com/product/robot-unicorn/) and controlled to do a fixed sequence of actions. In this post a similar thing will be done, but this time the actions are not fixed within the robot itself, but in response to messages sent from another microbit via the radio module.

Sending

Sends out messages via the microbit's radio module, e.g. fwd for forward or tr for turn right; as well the name of the actions scrolls across the microbit.

	from microbit import *
	import radio
	radio.on()
	while True:
	radio.send("fwd")
	display.scroll("forward")
	sleep(2000);
	radio.send("bwd")
	display.scroll("backward")
	sleep(2000);
	radio.send("tl")
	display.scroll("Left")
	sleep(2000);
	radio.send("tr")
	display.scroll("right")
	sleep(2000);
	radio.send("stp")
	display.scroll("stop")
	sleep(2000);

view raw sender_unicorn_test hosted with ❤ by GitHub

On the Unicorn

Revieves messages via the microbits radio module, e.g. bwd for backward or tl for turn left; then carries out the action for 500ms. The time was selected to give the system enough time to finish the action before the next message is expected.

	from microbit import *
	import radio
	pin0.set_analog_period(20)
	pin0.set_analog_period(20)
	def backward(N):
	pin0.write_analog(10)
	pin1.write_analog(100)
	sleep(N)
	def forward(N):
	pin0.write_analog(100)
	pin1.write_analog(10)
	sleep(N)
	def turnRight(N):
	pin0.write_analog(100)
	pin1.write_analog(100)
	sleep(N)
	def turnLeft(N):
	pin0.write_analog(10)
	pin1.write_analog(10)
	sleep(N)
	def stopIt(N):
	pin0.write_analog(0)
	pin1.write_analog(0)
	sleep(N)
	radio.on()
	while True:
	incoming = radio.receive()
	stopIt(100);
	if incoming == 'fwd':
	forward(500)
	if incoming == 'bwd':
	backward(500)
	if incoming == 'tl':
	turnLeft(500)
	if incoming == 'tr':
	turnRight(500)
	if incoming == 'stp':
	stopIt(100)

view raw recieve_unicorn.py hosted with ❤ by GitHub

All the code available at Turner, S., 2017. Robo_unicorn_python. Available at: <Robo_unicorn_python> https://doi.org/10.6084/m9.figshare.5729583.v7

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