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Witty Pi 3 Mini: Realtime Clock and Power Management for Raspberry Pi uugear

Original price was: $ 19,99.Current price is: $ 11,99.

SKU: mode_4845351534671 Category: Raspberry Pi > Clock Tags: power, Raspberry Pi, Raspberry Pi > Accessories, Real Time Clock, RTC, updated 10-22

Description
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Witty Pi 3 Mini adds RTC (DS3231SN) and power management to your Raspberry Pi, and can define complex ON/OFF sequence with a simple script.

PRODUCT DESCRIPTION

Witty Pi is small electronic circuit board that can add realtime clock and power management to your Raspberry Pi. Witty Pi 3 Mini is a new member of the third generation of Witty Pi, and it has pHAT shape (Raspberry Pi Zero size).

After installing Witty Pi 3 Mini on your Raspberry Pi, you get some amazing new features:

You can gracefully turn on/off Raspberry Pi with single tap on the switch.
After shutdown, Raspberry Pi and all its USB peripherals’ power are fully cut.
Raspberry Pi knows the correct time, even without accessing the Internet.
Raspberry Pi knows the temperature thanks to the sensor in RTC chip.
You can schedule the startup/shutdown of your Raspberry Pi.
You can even write a script to define complex ON/OFF sequence.
Monitor external voltage and turn on/off your Raspberry Pi accordingly.

Witty Pi 3 Mini supports all Raspberry Pi models that has the 40-pin GPIO header, including A+, B+, 2B, Zero, Zero W, 3B, 3B+, 3A+ and 4B.

Witty Pi 3 Mini uses the same software with Witty Pi 3. You just need to run these two commands in your Raspberry Pi to install the software:

pi@raspberrypi:~ $ wget http:///repo/WittyPi3/install.sh

pi@raspberrypi:~ $ sudo sh install.sh

Comparing to Witty Pi 3, Witty Pi 3 Mini uses the same RTC chip (DS3231SN) and same micro-controller (ATtiny841). The main difference is the LDO voltage regulator (LM29150) is not populated on Witty Pi 3 Mini. This reduces the cost for those who don’t need this LDO, and also make things easier to integrate a different DC/DC module into Witty Pi 3 Mini.

Unlike Witty Pi 3 uses a 3V button battery for off-power time keeping, Witty Pi 3 Mini uses a super capacitor (0.08F, or 80000uF) for this purpose.

You can find more information in its user manual: http:///doc/WittyPi3Mini_UserManual.pdf

PACKAGE CONTENT:

Each Witty Pi 3 Mini package contains:

Witty Pi 3 Mini board x 1
M2.5 x 10mm plastic screw x 4
4mm spacer x 4
M2.5 plastic nut x 4

Dimension:	65mm x 30mm x 4mm
Weight	8g (net weight)
Micro Controller	ATtiny841(datasheet)
Realtime Clock	DS3231SN (datasheet)
LED Indicator	Red LED: lights up when Raspberry Pi gets powered. White LED: lights up for a few seconds when a shutdown command is received, or blinks when device is standing by.
Connector	20×2 surface-mounted header with 2.54 mm pitch and 2mm plastic height. Micro USB female connector as 5V DC input. Unpopulated 7-pin header for extension or integration. Unpopulated 3-pin header/connector for VIN, GND and 5V.
Time Keeping	Using 0.08F super capacitor as time keeping power source. Allows about 17 hours off-power time keeping.
Power In	DC 5V (via micro USB). Possible to connect external DC/DC converter (not included) and also have VIN monitored.
Output Current	Up to 2.5A for Raspberry Pi and its peripherals. If using external DC/DC converter, the output current is also limited by the capability of DC/DC converter.
Standby Current	~ 1mA
Operating Temperature	-30℃~80℃ (-22F~176F)
Storage Temperature	-40℃~85℃ (-40F~185F)
Humidity	0~80%RH, no condensing

Fast Shipping and Professional Packing

We offer a broad range of shipping options due to our long-standing partnerships with UPS, FedEx and DHL. Our warehouse staff is highly trained and will pack the goods according to our precise and exact specifications. Before shipping, all goods will be thoroughly examined and securely secured. We deliver to hundreds of thousands of customers every day in different countries. The fact that we are determined to become the largest online retailer in the world is evident. Warehouses and distribution centres can be located in Europe as well as the USA.

Note: Orders with more than one item will be assigned a separate processing time for each item.

Before shipment, all ordered items will be thoroughly examined. Most orders are now shipped within 48 hrs. Delivery is expected to take between 3 and seven days.

Returns

Stock is dynamic, and cannot be fully controlled by us because of the involvement of multiple parties including the factory and our warehouse. This means that the actual stock could alter at any time. It's possible that the stocks could be depleted after your order has been processed.

The policy is for 30 days. Unfortunately, if 30 days have passed from the date you purchased the item, we will not be able to provide a refund or exchange.

The item must not be in use and must be in the original packaging. You must have the item in the original packaging.

Witty Pi 3 Mini: Realtime Clock and Power Management for Raspberry Pi uugear

PRODUCT DESCRIPTION

PACKAGE CONTENT:

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