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Attention! The product has been discontinued. Check other products in category. |
Description: Emergency power supply - Raspberry Pi cap - Arduino MCU + RTC.
A cap to power the RaspberryPiminicomputerfromthe battery. Built-in ArduinoATmega328P-AUand RTCallow to manage power, which ensures longer operation. The module will automatically go into and out of emergency power mode.PH 2.0connector is used to connect batteries from7V to 28V.ThemicroUSBconnector is used forUART communicationand5 Vpower supply.
The Raspberry Pi minicomputer is sold separately.
Main features of the cover plate
- Standard GPIO 40-pin Raspberry Pi output
- Built-in ATmega328P chip, supports Arduino programming
- Built-in RTC PCF8523 provides precise time information
- User-defined buttons can be used to start up, safely disable Raspberry Pi or other selected functions
- Such protections as: protection against reverse connection, too much current, etc. ensuring safe and stable power supply
- Real-time voltage/current monitoring
Arrangement of elements on the board
- ATmega328P-AU
- Energy Management System MP1584
- RTC PCF8523
- UART Converter CP2102
- CAT24C32 EEPROM memory chip
- GPIO Raspberry connector Pi 40pin
- Connector for connecting PH2.0 batteries: 7 to 28 volts
- USB connector for UART communication
- Debugging switch: switched to DEBUG - the power supply bypasses Arduino and directly reaches Raspberry Pi
switched the other way - the power supply is managed by Arduino - PWR button: to enable/disable Raspberry Pi or can be user defined
- RST button: to reset Arduino
- Status light
- Power LED
- RTC battery slot CR1220
- UART selection:
A: access to Arduino via USB - UART
B: control of Raspberry Pi via Arduino
C: access to Raspberry Pi via USB - UART
Overlay specification
- The control system: ATmega328P-AU
- Communication interface: UART + GPIO
- Power interface: USB or PH2.0 connector
- USB power supply voltage: 5 V
- Power supply voltage PH2.0: 7 V to 28 V (adjustable power supply or lithium battery)
- Protections: Reverse connection protection, current protection, voltage and current monitoring
- Mounting holes: 3 mm
- Dimensions: 65 x 56.5 mm
The set includes
- Overlay
- Basket for 2x battery Li-Ion18650 (batteries to be purchased separately)
- USB cable - microUSB
- 2x20 pin connector
- Screw set and distances
Useful links |
