{"title":"Witty Pi 5 HAT+ RTC & Power Management for Raspberry Pi","handle":"witty-pi-5-hat-rtc-power-management-for-raspberry-pi","url":"/products/witty-pi-5-hat-rtc-power-management-for-raspberry-pi","description":"Add reliable real-time clock and programmable power control to a Raspberry Pi with this HAT+ add-on board. Witty Pi 5 can define your Raspberry Pi’s on/off sequence, trigger power actions based on temperature or voltage thresholds, and help reduce overall energy consumption in remote or battery-conscious projects.This fifth-generation Witty Pi is the first in the line to comply with the Raspberry Pi HAT+ specification. As a Mode 1 Power HAT+ board, it can deliver up to 5A to the Raspberry Pi and connected peripherals, while its onboard DC/DC converter accepts up to 30V DC input.It supports Raspberry Pi models with a 40-pin GPIO header, including A+, B+, 2B, Zero, Zero W, Zero 2 W, 3B, 3B+, 3A+, 4B and 5B. For Zero-series boards, you’ll need to solder a 40-pin header first for a reliable connection.The firmware and software are open-source for developer customisation, with firmware written in C using the pico-sdk and software written in C. Firmware updates are handled via the BOOTSEL button and USB boot mode, and the board can emulate both a USB flash drive and a USB serial device for configuration, logs and debugging. Coin cell battery is not included.Features:Real-time clock: High-precision RTC with an accuracy of ±3.8 to 5 ppm.Temperature sensor: Dedicated temperature sensor with 0.0625°C resolution.DC/DC converter: Onboard DC/DC converter that accepts up to 30V DC input.Ideal diodes: Two “ideal” diodes that isolate VIN and VUSB.Microcontroller: RP2350 MCU with an external 16MB flash memory.ID EEPROM: Compatible with the HAT+ specification.Power sequencing: Can define the on/off sequence of your Raspberry Pi.Threshold actions: Can perform power on/off actions based on temperature or voltage thresholds.Lower power operation: Can significantly reduce overall energy consumption.Developer friendly: Firmware and software are fully open-source for modification and adaptation.Easy firmware updates: Hold BOOTSEL while connecting USB, then drag and drop the compiled .uf2 firmware file.USB tools: Emulates both a USB flash drive and a USB serial device for configuration, logs and real-time monitoring.Specifications:HAT standard: Raspberry Pi HAT+ specification.Power HAT+ mode: Mode 1 Power HAT+ board.Output current: Up to 5A current to Raspberry Pi and its peripherals.Raspberry Pi compatibility: All Raspberry Pi models with a 40-pin GPIO header, including A+, B+, 2B, Zero, Zero W, Zero 2 W, 3B, 3B+, 3A+, 4B, and 5B.Zero-series requirement: For models like Zero, Zero W, and Zero 2 W, you will need to solder a 40-pin header onto the board beforehand to ensure a reliable connection with Witty Pi.RTC accuracy: ±3.8 to 5 ppm.Temperature sensor resolution: 0.0625°C.DC input: Up to 30V DC input.Microcontroller: RP2350.External flash memory: 16MB.ID EEPROM: Compatible with HAT+ specification.Firmware: Written in C using the pico-sdk.Software: Written in C.Software and firmware: Fully open-source.Software installation command 1: pi@raspberrypi:~ $ wget https://www.uugear.com/repo/WittyPi5/wp5_latest.debSoftware installation command 2: pi@raspberrypi:~ $ sudo apt install ./wp5_latest.debFirmware update mode: Hold the BOOTSEL button while connecting the USB cable to make the RP2350 enter USB boot mode and present itself as a virtual USB drive.Firmware file: Drag-and-drop the compiled .uf2 firmware file to flash it.USB emulation: USB flash drive and USB serial device.Battery: Coin cell battery is not included.Customer support: Supplier forum.User Manual: Available from the supplier.Ideal for scheduled Raspberry Pi projects, remote deployments, data loggers and systems that need controlled shutdowns or reliable timekeeping.","vendor":"Adafruit","product_type":"Raspberry Pi HAT","in_stock":true,"options":[],"variants":[{"id":16320,"title":"Default Title","sku":"AF-6449","mpn":"ADA6449","price":147.4,"on_sale":false,"in_stock":true,"available_quantity":70}]}