UPS-14500-IS-HAT-LED.jpg

Latest schematic of the HAT-Like version of the UPS -- with the LED charge indicator.

JPEG Image - 404.16 kB - 04/02/2018 at 18:46

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UPS-14500-IS-HAT-LED.zip

This file contains all of the gerber files to make the UPS-14500-OS-HAT-LED PCB. You can upload this zipped file to OSH Park and order the PCBs from them. There is also a TopPaste.gbr file that you can upload separately to OSH Stencils to get a stencil for applying the solder paste (highly recommended because of the weird TPS61236p package).

Zip Archive - 53.52 kB - 04/02/2018 at 18:43

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HAT_BOM.xls

The Bill of Materials for the UPS-14500-IS-HAT-LED design. I have annotated it will some of the sources (mostly Digikey and eBay) that I use to obtain parts.

application/vnd.ms-excel - 13.50 kB - 09/10/2017 at 04:48

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14500Hat18313.asm

This is the PIC assembly code for the HAT version. The changes are to reverse the ACPR signal from negative edge to positive edge, and to lower the low battery threshold from 3.0V to 2.75V.

asm - 17.41 kB - 07/22/2017 at 19:45

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UPS-18650-NS_BOM.xls

The Bill of Materials for the UPS-18650-NS design. I have annotated it will some of the sources (mostly Digikey and eBay) that I use to obtain parts.

ms-excel - 12.00 kB - 07/02/2017 at 04:46

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UPS-18650-NS.zip

This file contains all of the gerber files to make the UPS-18650-NS PCB. You can upload this zipped file to OSH Park and order the PCBs from them. There is also a TopPaste.gbr file that you can upload separately to OSH Stencils to get a stencil for applying the solder paste (highly recommended because of the weird TPS61236p package and the difficult MSOP-10 package).

Zip Archive - 62.54 kB - 06/27/2017 at 02:19

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UPS-18650-NS.jpg

The latest schematic for the UPS-18650-NS design.

JPEG Image - 334.73 kB - 09/01/2017 at 18:25

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UPS-14500-IS_BOM.xls

The Bill of Materials for the UPS-14500-IS design. I have annotated it will some of the sources (mostly Digikey and eBay) that I use to obtain parts.

ms-excel - 13.00 kB - 06/12/2017 at 23:32

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UPS-14500-IS.zip

This file contains all of the gerber files to make the UPS-14500-IS PCB. You can upload this zipped file to OSH Park and order the PCBs from them. There is also a TopPaste.gbr file that you can upload separately to OSH Stencils to get a stencil for applying the solder paste (highly recommended because of the weird TPS61236p package and the difficult MSOP-10 package). I decreased the stencil openings on the MSOP to dimensions recommended by TI for MSOP pads. Hopefully this will give better results.

Zip Archive - 56.24 kB - 06/12/2017 at 22:10

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UPS-14500-IS.jpg

The latest schematic for the UPS-14500-IS design.

image/jpeg - 354.42 kB - 09/01/2017 at 18:24

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noswitch18313.asm

This is the assembler code for the PIC16F18313 micro controller. I don't really like giving away stuff that I worked hard on, but I have no plans to make this into a commercial endeavor. The only other time that I wrote machine code was on a PDP8, back in '73. This code should match the flowchart pretty closely.

asm - 17.31 kB - 06/02/2017 at 01:28

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Flowchart-noswitch.pdf

This is flow chart for the PIC firmware. It is the best insight for how the UPS operates.

Adobe Portable Document Format - 43.01 kB - 05/31/2017 at 13:40

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