The Challenger RP2040 SD/RTC is an Arduino/CircuitPython compatible Adafruit Feather format microcontroller board based on the Raspberry Pi Pico chip.
This board is equipped with an microSD card reader and a Real Time Clock making it super useful for data logging applications.
This board is equipped with a microSD card connector that will house standard microSD cards allowing your application to have many gigabytes of storage room for sensor data or what ever you want to place on it. Together with a fancy display you could also store cool images.
Real Time Clock (RTC)
MCP79410 is a highly integrated real time clock with nonvolatile memory and many other advanced features. These features include a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. Using a low-cost 32.768 kHz crystal or other clock source, time is tracked in either a 12-hour or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multifunction open drain output can be programmed as an Alarm Out or as a Clock Out that supports 4 selectable frequencies.
|Microcontroller ||RP2040 from Raspberry Pi (133 MHz dual-core Cortex-M0) |
|SPI ||One SPI channel configured |
|I²C ||One I²C channel configured |
|UART ||One UART channel configured |
|Analog inputs ||4 analog input channels |
|Flash memory ||8 MB, 133 MHz |
|SRAM Memory ||264 KB (divided into 6 banks) |
|USB 2.0 controller ||Up to 12 MBit/s full speed (integrated USB 1.1 PHY) |
|JST Battery connector ||2.0 mm pitch |
|On board LiPo charger ||500 mA standard charge current |
|RTC ||MCP79410 (uses I²C0 (Wire) for communication) |
|SD Card ||One SPI channel used (uses SPI1 to connect to the SD socket) |
|Dimensions ||51 x 23 x 3,2 mm |
|Weight ||9 g |