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Change History

This section describes the change history of this document and board. Document changes are not always a result of a board change. A board change will always result in a document change.

Document Change History

Table 101 Change History

Rev

Changes

Date

By

A.x

Production Document

December 7, 2017

JK

0.0.5

Converted to .rst and gitlab hosting

July 21, 2022

DK

Board Changes

Table 102 Board History

Rev

Changes

Date

By

A1

Preliminary

February 14, 2017

JK

A2

Production. Fixed mikroBUS Click reset pins (made GPIO).

September 22, 2017

JK

A2a

Fixed label on P2_24. Was labeled GPIO48, should be GPIO44.

November 7, 2017

JK

A2b

Because there are 2 TI parts which have long lead-time, we made the following changes:

  1. Use ESD discrete devices instead of integrated TVS TI: TPD4S012DRYR.

  2. Change Logic IC TI SN74LVC1G07DCKR to Nexperia 74LVC1G07GV

June 15, 2021

JK

PocketBone

Upon the creation of the first, 27mm-by-27mm, Octavo Systems OSD3358 SIP, Jason did a hack two-layer board in EAGLE called “PocketBone” to drop the Beagle name as this was a totally unofficial effort not geared at being a BeagleBoard.org Foundation project. The board never worked because the 32kHz and 24MHz crystals were backwards and Michael Welling decided to pick it up and redo the design in KiCad as a four-layer board. Jason paid for some prototypes and this resulted in the first successful “PocketBone”, a fully-open-source 1-GHz Linux computer in a fitting into a mini-mint tin.

Rev A1

The Rev A1 of PocketBeagle was a prototype not released to production. A few lines were wrong to be able to control mikroBUS Click add-on board reset lines and they were adjusted.

Rev A2

The Rev A2 of PocketBeagle was released to production and launched at World MakerFaire 2017.

Known issues in rev A2:

Issue

Link

GPIO44 is incorrectly labelled as GPIO48

Issue #4

Rev A2B

Because 2 TI parts had a long lead time, we made the following changes:

Change # | Modification

Reference Designators

Part Type

Before(value )

After(value)

1

Changed C2,C3 from 18pF to 22pF.

C2,C3

Cap Ceramic

18pF

22pF

2

Changed Y1 from 24MHz_18pF to 24MHz_22pF.

Y1

Crystal

24MHz_18pF

24MHz_22pF

3

Use ESD discrete devices(D1-D4) to replace U3.

U3

ESD Solution

integrated

ESD discrete devices(D1-D4)

4

Changed U2 from SN74LVC1G07DCKR to 74LVC1G07GV,125.

U2

Logic

SN74LVC1G07DCKR

74LVC1G07GV,125

5

The PCB Revision for this board is Rev A2b.

The PCB Revision for this board is Rev A2b.