PCB5.0E-2016 vs. PCB5.0E-2018 vs. PCB5.0E-2019 vs. PCB5.0E-2020 Board Differences     2020/01/02
by Ami Sapphire

Last Updated: 2020/01/16

2020
[0116]
Added year 2020 variant differences

[0117]
Added year 2018 variant differences

--

Format:
2016 -> 2018 -> 2019 -> 2020

--

Component differences

Near three resistors in top left corner
SN74HC14N -> CD4069UBE -> CD4069BE -> SN74HC14N

Near PLCC32 socket (39 flash series socket)
SN74LS06N -> HD74HC05P -> SN74HC06N -> HD74HC05P

Added on bottom of the board at MC34063A pins 4 and 5 on 2018/2019 boards
33pf or 100nf ceramic capacitor (possible PCB redesign mistake; removed on 2020 variants)

--

Relocated components

Component above top CD4015BE nearest the 32-pin ZIF socket
1N5819 Schottky barrier rectifier -> S8550 transistor -> S8550 transistor -> S9014 transistor
Note: the rectifier has been relocated to x and the S8550 transistor was originally y.

--

Printed text differences

Name on lower area of board
PCB5.0E-2016 -> PCB5.0E-2018 -> PCB5.0E-2019 -> PCB5.0E-2020

Text above J5
Open=3V3 -> Open=3V6 -> Open=3V6 -> Open=3V6

Text between USB port and DC jack
9-12V -> DC: 9-12V -> DC: 9V -> DC: 9V