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RP2040 processor with firmware upload by USB mass storage interface.
UART interface to external sensor device.
Embedded GPS with UART interface.
DOGM LCD display and buttons to control the external sensor settings and operational modes.
Onboard 1GB SPI flash memory for log storage.
Integration of GPS and sensor data.
download of log by USB serial connection.

Replacement for Digi RCM3000 Module based on RP2040 processor.
Hardware interface abstracted for minimal change to original Dynamic C code base.
Adds Wifi and Bluetooth functions to original system.
FRAM memory replaces battery-backed RAM.
Includes RV3028 low power battery-backed RTC chip.

RP2040 processor.
RS232 interface to external master CPU.
SPI interface to 2 x MAX31855 Type-T thermocouple devices.
Status indication by coloured WS2812B LEDs.

RP2040 processor with external FRAM memory.
UART interface to HC-06 serial bluetooth device.
I2C interface to 4 x BH1750 ambient lux sensors.
UART interface to TFT display module.
Battery charging using TP5000 module.