Adafruit DS3231 Precision RTC Breakout KitThe datasheet for the DS3231 explains that this part is an "Extremely Accurate IC Integrated RTC TCXO Crystal". And, hey, it does exactly what it says on the tin! This Real Time Clock (RTC) is the most precise you can get in a small, low power package. Most RTCs use an external 32kHz timing crystal that is used to keep time with low current draw. And that's all well and good, but those crystals have slight drift, particularly when the temperature
A new collaboration between Adafruit & Micah from Scanlime
0 hardware and Teensyduino's software support for Arduino timing functions are designed to allow dynamically speed changes
Comes with one fully assembled and tested module
two analog outputs
Checkout the assembly instructions - we're pretty proud of them
it will allow stacking of up 62 shields to control up to 992 PWM outputs
we are happy to now offer a great new thermocouple amplifier/converter that can handle just about any type of thermocouple
added a coin-cell holder for RTC usage
without an Arduino+Shield
This boost converter chip has some really nice extras such as low battery detection
RFM69 @ 900 MHz - basic packetized FSK/GFSK/MSK/GMSK/OOK radio at 868 or 915 MHz for use in Americas ITU 2 license-free ISM
The SHT31-D sensor has an excellent ±2% relative humidity and ±0
