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