030172f523
Captures everything needed to redeploy the two-display clock (hour on I2C 0x61, minute on I2C 0x63) on a fresh Pi: - Both systemd units (matrix0x61.service, matrix0x63.service) - Deployed Pimoroni script tree, including the local %I (12-hour) clock customization - Vendored upstream sources (ltp305-python, breakout-garden) so restore is fully offline-capable - Boot config snippet enabling I2C - install.sh that wires it all back up idempotently - Inventory doc cross-referencing every live-system path Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
134 lines
3.8 KiB
Python
Executable File
134 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# NOTE! This code should not be used for medical diagnosis. It's
|
|
# for fun/novelty use only, so bear that in mind while using it.
|
|
|
|
import sys
|
|
import time
|
|
|
|
from PIL import Image
|
|
from PIL import ImageFont
|
|
from PIL import ImageDraw
|
|
|
|
from threading import Thread
|
|
from luma.core.interface.serial import spi
|
|
from luma.oled.device import sh1106
|
|
|
|
from max30105 import MAX30105, HeartRate
|
|
|
|
print("""
|
|
NOTE! This code should not be used for medical diagnosis. It's
|
|
for fun/novelty use only, so bear that in mind while using it.
|
|
|
|
This Pimoroni Breakout Garden example requires a
|
|
MAX30105 Breakout and a 1.12" OLED Breakout (SPI).
|
|
|
|
The Pulse-O-Matic 6000 is a heartbeat plotter and BPM display.
|
|
|
|
Press Ctrl+C a couple times to exit.
|
|
""")
|
|
|
|
# Set up OLED
|
|
oled = sh1106(spi(port=0, device=1, gpio_DC=9), rotate=2, height=128, width=128)
|
|
|
|
# Load fonts
|
|
lsb_18 = ImageFont.truetype("fonts/LiberationSans-Bold.ttf", 18)
|
|
lsr_12 = ImageFont.truetype("fonts/LiberationSans-Regular.ttf", 12)
|
|
|
|
# Set up MAX30105 Breakout
|
|
max30105 = MAX30105()
|
|
max30105.setup(leds_enable=2)
|
|
|
|
max30105.set_led_pulse_amplitude(1, 0.2)
|
|
max30105.set_led_pulse_amplitude(2, 12.5)
|
|
max30105.set_led_pulse_amplitude(3, 0)
|
|
|
|
max30105.set_slot_mode(1, 'red')
|
|
max30105.set_slot_mode(2, 'ir')
|
|
max30105.set_slot_mode(3, 'off')
|
|
max30105.set_slot_mode(4, 'off')
|
|
|
|
hr = HeartRate(max30105)
|
|
data = []
|
|
running = True
|
|
|
|
bpm = 0
|
|
bpm_avg = 0
|
|
beat_detected = False
|
|
beat_status = False
|
|
|
|
|
|
def sample():
|
|
"""Function to thread heartbeat values separately to
|
|
OLED drawing"""
|
|
global bpm, bpm_avg, beat_detected, beat_status
|
|
|
|
average_over = 5
|
|
bpm_vals = [0 for x in range(average_over)]
|
|
last_beat = time.time()
|
|
|
|
while running:
|
|
t = time.time()
|
|
samples = max30105.get_samples()
|
|
if samples is not None:
|
|
for i in range(0, len(samples), 2):
|
|
ir = samples[i + 1]
|
|
beat_detected = hr.check_for_beat(ir)
|
|
if beat_detected:
|
|
beat_status = True
|
|
delta = t - last_beat
|
|
last_beat = t
|
|
bpm = 60 / delta
|
|
bpm_vals = bpm_vals[1:] + [bpm]
|
|
bpm_avg = sum(bpm_vals) / average_over
|
|
d = hr.low_pass_fir(ir & 0xff)
|
|
data.append(d)
|
|
if len(data) > 128:
|
|
data.pop(0)
|
|
|
|
time.sleep(0.05)
|
|
|
|
|
|
# The thread to measure acclerometer values
|
|
t = Thread(target=sample)
|
|
t.start()
|
|
|
|
# The main loop that draws values to the OLED
|
|
while True:
|
|
try:
|
|
img = Image.open("images/heartbeat.png").convert(oled.mode)
|
|
draw = ImageDraw.Draw(img)
|
|
|
|
# Draw the heartbeat trace
|
|
vals = data
|
|
new_vals = [x / float((max(vals) - min(vals))) * 32 for x in vals]
|
|
|
|
for i in range(1, len(new_vals)):
|
|
draw.line([(i - 1, 80 - new_vals[i - 1]), (i, 80 - new_vals[i])],
|
|
fill="white")
|
|
|
|
# Draw the Pulse-O-Matic "branding"
|
|
draw.rectangle([(0, 0), (128, 20)], fill="black")
|
|
if bpm_avg > 40:
|
|
draw.text((0, 1), "BPM: {:.2f}".format(bpm_avg), fill="white",
|
|
font=lsb_18)
|
|
else:
|
|
draw.text((0, 1), "BPM: --.--", fill="white", font=lsb_18)
|
|
if beat_status:
|
|
draw.text((115, 1), u"\u2665", fill="white", font=lsb_18)
|
|
beat_status = False
|
|
draw.line([(0, 20), (128, 20)], fill="white")
|
|
|
|
draw.rectangle([(0, 108), (128, 128)], fill="black")
|
|
draw.text((0, 110), "Pulse-O-Matic 6000", fill="white", font=lsr_12)
|
|
draw.line([(0, 108), (128, 108)], fill="white")
|
|
|
|
# Display on the OLED
|
|
oled.display(img)
|
|
except ZeroDivisionError:
|
|
pass
|
|
except KeyboardInterrupt:
|
|
running = False
|
|
sys.exit(0)
|