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2 layers68.2 × 53.3 mmBack Panel Board, the printed circuit board in 3D

Retro-cyling a Practical Peripherals 9600SA into a WiFiModem

Size
68.2 × 53.3 mm
Copper layers
2
Thickness
1.6 mm
Parts
39
Nets
58
Pads
125
Tracks, vias
186, 39
Pours
6
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
29 Nov 2020
Updated
22 Mar 2021

Overview

Back Panel Board is an open-source printed circuit board by baldengineer, from the baldengineer/WiFi9600-Modem repository on GitHub, published under the MIT licence. It is a 2-layer board of 68.2 × 53.3 mm with 39 parts on 58 nets, routed with 186 tracks and 39 vias.

It is built around the MAX3232ID. Its parts include 7 connectors, 5 capacitors, 3 resistors, 3 diodes and 2 ICs.

Main components

1

README

README.md

WiFi9600 Modem

Retro-cyling a Practical Peripherals 9600SA into a WiFiModem

Design files and code for WiFi9600.

As a kid, I had a Practical Peripherals 9600SA. For years I used it to connect to BBSes and then the Internet. At least, until I upgraded to a 56K USR Sportser.

This project removes the original electronics and replaces them with an ESP8266, MP3 Player, and some relays. It allows classic computers with a RS-232 port to connect to the internet via telnet.

The MP3 player enables authentic fake modem sounds. And the relays are there for authentic real clicky-clicks.

Live stream archive of the project work is available here: https://www.twitch.tv/baldengineer/videos

Watch the stream and help out in chat here: https://twitch.tv/baldengineer

Parts

39
QtyValueFootprintReferences
51uCapacitor_SMD:C_0805_2012MetricC1, C2, C3, C4, C5
4MountingHoleMountingHole:MountingHole_2.5mmH1, H2, H3, H4
31kResistor_SMD:R_0805_2012MetricR7, R8, R9
3GNDMy Libraries:Harwin-S1751-46-Test-PointTP1, TP18, TP19
15vLED_SMD:LED_1206_3216MetricD3
18266-SerialConnector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_VerticalJ13
1DB25_Female_MountingHolesConnector_Dsub:DSUB-25_Female_EdgeMount_P2.77mmJ14
1DBtoMAXConnector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_VerticalJ18
1DinMy Libraries:Harwin-S1751-46-Test-PointTP13
1Front_PanelConnector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_VerticalJ12
1G***My Libraries:BE10svg2mod
1LEDLED_SMD:LED_1206_3216MetricD1
1LatchMy Libraries:Harwin-S1751-46-Test-PointTP15
1MAX3232Package_SO:SOIC-16W_7.5x10.3mm_P1.27mmU7
1Power_InConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ15
1Quiic MP3Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJ16
1RXMy Libraries:Harwin-S1751-46-Test-PointTP12
1RelaysConnector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_VerticalJ17
1SCLMy Libraries:Harwin-S1751-46-Test-PointTP9
1SDAMy Libraries:Harwin-S1751-46-Test-PointTP10
1Ser-ClkMy Libraries:Harwin-S1751-46-Test-PointTP14
1TXMy Libraries:Harwin-S1751-46-Test-PointTP11
1VCCMy Libraries:Harwin-S1751-46-Test-PointTP17
1VinMy Libraries:Harwin-S1751-46-Test-PointTP16
1VinLED_SMD:LED_1206_3216MetricD2
1WeMos_miniMy Libraries:D1_mini_boardU6

The 37 most common of 39 parts.

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Questions

How big is the Back Panel Board PCB?

It measures 68.2 × 53.3 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Back Panel Board use?

39 parts, built around the MAX3232ID. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Back Panel Board KiCad files?

From the baldengineer/WiFi9600-Modem repository on GitHub, at the commit this page was made from: the board is KiCad Design Files/Back Panel Board/Back Panel Board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Back Panel Board design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).