WEMOS D1 Mini ESP8266 Data Logging Shield, RTC, micro-SD
Backorder accepted for most products. Figure out how.
The MEMOS D1 Mini compatible Data Logging Shield can save data like digital eventsand analog measurements, together with a precisely time and date stamp, on a micro SD card (FAT16/32). An optional CR1220 lithium battery keeps the timekeeper running for several years without external power supply.
These are the I/O lines the Data Logging Shield is using to connect to the WEMOS D1 Mini WiFi board:
I2C for the RTC:
D1 – SCL
D2 – SDA
SPI for CD card:
D5 – CLK
D6 – DO
D7 – DI
D8 – CS
Specification: WEMOS D1 Mini ESP8266 Data Logging Shield, RTC, micro-SD