HardLabs

Control and communication card

pozsarzs·zacchaeus·PEIX External interface box/hardware/peix/peix.kicad_pcb

Control and communication card PCB layout, top view — open source AVR/Arduino board by pozsarzs

About the Control and communication card PCB

Control and communication card is an open source AVR/Arduino PCB design by pozsarzs, published on GitHub under the EUPL-1.2 license. It is a 2-layer board measuring 160 × 100.3 mm, with 45 components from 22 distinct parts.

Its main chip is the 87C51, from the AVR/Arduino family. Other key parts include the 27C64, 74LS573, 74LS08, MAX232 and 74LS245. By type, the board carries 16 capacitors, 8 ICs, 8 resistors, 7 connectors, 3 diodes and 2 jumpers.

It belongs with the retro computing designs in this gallery.

From the project

8-bit microcomputer built from commercially available and home-built components

The PEIX serves as an 8-slot external interface, designed to integrate legacy Klöckner-Moeller PS316 I/O modules with the Zacchaeus computer. Although the PS316 family has been obsolete since the mid-2000s, this circuit enables continued functionality by interfacing with the system's original analog and digital I/O modules.

The device is controlled by a circuit built with an 87C51 microcontroller. It is responsible for controlling the PLC modules and communicating with Zacchaeus via the RS-232 serial port.

Main components on the Control and communication card

87C5127C6474LS57374LS08MAX23274LS245

Control and communication card bill of materials (BOM)

45 components, 22 distinct parts.

QtyPartRefs
1
87C51
U1
1
27C64
U2
1
74LS573
U3
1
74LS08
U4
1
MAX232
U5
3
74LS245
U6, U7, U8
1
11.0592 MHz
Y1
2
Conn_01x08_Male
J1, J6
1
Conn_01x03_Male
J2
1
Conn_01x04_Male
J3
2
locked
J4, J5
1
locked
J8
1
Ext ROM
JP1
1
Jumper_3_Bridged12
JP2
3
LED
D1, D2, D3
8
100n
C1, C2, C5, C7, C8, C9, C10, C11
2
33
C3, C4
5
10u
C6, C13, C14, C15, C16
1
100u
C12
1
8.2k
R1
Show 2 more
QtyPartRefs
4
1k
R2, R3, R7, R8
3
470
R4, R5, R6

Control and communication card design files

The KiCad project lives in the pozsarzs/zacchaeus repository on GitHub; these links point at the commit this page was built from.

Control and communication card: common questions

What microcontroller does the Control and communication card use?

The Control and communication card is built around the 87C51, from the AVR/Arduino family.

How big is the Control and communication card PCB?

The Control and communication card measures 160 × 100.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Control and communication card?

45 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Control and communication card design files?

From the pozsarzs/zacchaeus repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Control and communication card design in my own project?

Yes, under the terms of its EUPL-1.2 license, which pozsarzs chose for the repository.

Can I test firmware for the Control and communication card without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

More boards in zacchaeus

Similar boards