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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>
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Heartbeat example
This example, the Pulse-O-Matic 6000, is a heartbeat plotter and BPM display.
Important!
This code should not be used for medical diagnosis, as the basis for a real smoke or fire detector, or in life-critical situations. It's for fun/novelty use only, so bear that in mind while using it.
Pre-requisites
This example requires:
- A Pimoroni Breakout Garden HAT
- A Pimoroni MAX30105 Breakout - Heart Rate, Oximeter, Smoke Sensor
- A Pimoroni 1.12" OLED Breakout (SPI)
Installation
Pop the breakouts into your Breakout Garden, and then run the install.sh
script in the root of this repository with sudo ./install.sh to automagically
install the libraries to run the I2C breakouts.
For this example you'll need to make sure some additional software is installed:
sudo apt install python3-pil
You'll need to clone and install the library for the 1.12" OLED Breakout (SPI) as follows:
git clone https://github.com/pimoroni/sh1106-python
sudo ./install.sh
This example assumes that you have the OLED plugged into the front slot on the
Breakout Garden HAT, which should also work with the Breakout Garden Mini HAT.
To change it to the back slot, change device=1 to device=0 on the line
where the OLED is set up.
Running this example
To run this example, type ./heartbeat.py in the terminal.
It's best to hold the sensor against your fingertip (the fleshy side) using a piece of wire or a rubber band looped through the mounting holes on the breakout, as the sensor is very sensitive to small movements and it's hard to hold your finger against the sensor with even pressure.
If you're using your MAX30105 Breakout with Breakout Garden, then we'd recommend using one of our Breakout Garden Extender Kits with some female to female jumper jerky.