EasyEDA User rodyne
rodyne
Public Project: 17 Footprint Package: 59 Likes: 29 Favorites: 25 Views: 16228

USB-RTC-Dongle for Raspberry Pi

3 months ago  

License: Public Domain

Status: Complete

USBRTCRPiCDCDS130716F1455
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USB dongle Real time clock For raspberry Pi (which does not have one)

Initializes as a USB Serial port when plugged in to any computer and times can be read and set via serial commands

Microchip XC8 Project attached below

PCB Shown is revision 3 as I have been trying to fit it into a small USB dongle enclosure, the one it seems to fit best is the USB-7201-G from Bud Industries.

Have marked the project as complete as it all works, however I reserve the right to make tweaks if required...

RTC Schematic

RTC Schematic

New PCB

New PCB

Attachments

FilenameDownload
RPI-RTC XC8 for PIC16F1455.zipDownload

BOM

IDValueQty.PackageComponentsManufacturer PartSupplierManufacturerLCSC
11u2C1210C1,C4
2100nF1C0805C3
3DS13071SOIC-8U3
4PIC16F1455-ISL1SOIC14NU5
52.2K3R0805R1,R2,R3
6ACTIVITY1R0805L1
7USB-A-11USB-A-1USB1A/M Stick plate bent legs VinylPBT With a columnLCSCValuePro C46394
832.768KHz13*8X1DT-38 32.768KHzLCSCKDS C93228
9CR1220-21BATTERY-2B1CR1220-2LCSCQ&J C70381

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