The SparkFun Female DE9 Breakout is a simple breakout board featuring a female DE9 (commonly referred to as DB9) connector. The board comes with the female DE9 connector and breaks all nine pins, along with two extra ground connections to a 0.1in.-spaced plated through-hole (PTH) header.
The INA238 is an amazing power monitoring chip, with best-of-everything support: up to 85VDC common-mode, high or low side measurements, 16-bit ADC for precision measurements from milliamp to Amp, and I2C interface for easy configuration of alerts, oversampling, and gain adjustments and more!
This Wiz5500 Ethernet Breakout will let you add quick and easy wired Internet. Just plug in a standard Ethernet cable, and run the Ethernet Arduino library (or CircuitPython) for cross-platform networking.
The INA237 is an amazing power monitoring chip, with best-of-everything support: up to 85VDC common-mode, high or low side measurements, 16-bit ADC for precision measurements from milliamp to Amp, and I2C interface for easy configuration of alerts, oversampling, gain adjustments and more!