The goal for this project was to make an easy-to-use display that doesn’t need power all of the time!
Parts
- PiicoDev Transceiver
- Badger 2040
- A Pico
- PiicoDev Expansion Board
- Misc parts, USB cables, power supply, PiicoDev cables
Instructions
-
Plug the transceivers into the Pico and Badger boards
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Plug both boards into your computer
-
Set Thonny up, making sure that more than 1 window is enabled (Tools > Options > General > Allow only a single Instance - ensure this is unticked)
-
Upload the code below:
For the Badger:
# Listen for LED control messages
# Valid messages set the state of the on-board LED
from PiicoDev_Transceiver import PiicoDev_Transceiver
from PiicoDev_Unified import sleep_ms
from machine import Pin
import badger2040
radio = PiicoDev_Transceiver(bus=0,sda=Pin(4),scl=Pin(5),freq=100000)
display = badger2040.Badger2040()
display.led(128)
display.update_speed(badger2040.UPDATE_FAST)
display.font("bitmap8")
display.thickness(1)
display.pen(0)
#name, size, thickness
font = ("sans", 2, 3)
# Font constants
display.font(font[0]) #name
display.thickness(font[2]) #thickness
# Max length should be handled by the sending device
str_lst = ['','','']
def draw_text_handler():
display.pen(0)
display.text(str_lst[0], 0, 24, font[1])
display.text(str_lst[1], 0, 72, font[1])
display.text(str_lst[2], 0, 108, font[1]/2)
display.update()
def rcv_str_handle(str_inp):
if str_inp.find(':') is not -1:
multi_ln_str = str_inp.split(':')
for split_line_strs in multi_ln_str:
str_line_handle(split_line_strs)
else:
str_line_handle(str_inp)
def str_line_handle(strs):
global str_lst
strs = strs.split(',')
#print(strs)
str_lst[int(strs[0])] = strs[1]
print('Running')
while True:
if radio.receive():
message = radio.message
# print(message)
display.pen(15)
display.clear()
sleep_ms(1500)
rcv_str_handle(message)
draw_text_handler()
sleep_ms(50)
For the Pico
from PiicoDev_Transceiver import PiicoDev_Transceiver
from PiicoDev_Unified import sleep_ms
radio = PiicoDev_Transceiver()
radio.send("0,Wireless:1,Updating:2,Name Badge")
- Customise the text you want to display!
The line that you want to update is specified by the number, a comma then the text
Line one and two use a larger font and can display 7ish characters whereas the third uses a smaller font holding around 14
Any questions or queries lemme know!
