A Hardware

[yumi]

The AD8221-EP is a gain programmable, high performance instrumentation amplifier with the highest CMRR over frequency in its class. The CMRR of today's instrumentation amplifiers drops off at 200 Hz. The AD8221-EP, on the other hand, maintains a minimum CMRR of 80 dB to 10 kHz at G = 1. The AD8221-EP's high CMRR over frequency allows it to reject wideband interference and line harmonics, greatly simplifying filter requirements.

https://www.kynix.com/components/AD8221-Instrumentation-Amplifier-CAD-Models-Datasheet-PDF-Features.html

[yumi]

The HT16K33 is a multi-function LED controller driver with memory mapping. The device has a maximum display segment number of 128 patterns (16 segments and 8 commons) and a 13*3 (MAX.) matrix key scan circuit. The HT16K33's software configuration features make it suitable for a wide range of LED applications, including LED modules and display subsystems. The HT16K33 communicates with most microcontrollers via a two-line bidirectional I2C bus.

https://www.apogeeweb.net/circuitry/ht16k33-led-controller-driver-datasheet-pdf-arduino-applications-faq.html