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ucom

uCom

Description

uCom (micro-Com) is a RS232 adapter for the Z80-MBC2 (or V20-MBC).
It has a power supply for the Z80-MBC2 (or V20-MBC) and a “transparent” serial-USB port.

Details





Hardware Overview

The uCom board, as the uTerm VT100 board, has a “transparent” USB-serial adapter connector, so you can upload firmware to the Z80-MBC2 (or V20-MBC) (using Arduino IDE) or load an Intel-Hex file (with iLoad) or use XMODEM to exchange files with a PC (running a terminal emulator that supports XMODEM file transfer) while the uCom is in use.
Both the “mixed” power supply scenarios (USB-serial adapter not powered from USB but Z80-MBC2 (or V20-MBC) powered and vice-versa) are managed by the HW, so you don't need to worry about it.

The AUX_P connector (J2)

This connector is intended for a better power supply connection for the Z80-MBC2. The use of this connector is recommended only if the uCom and the Z80-MBC2 (or V20-MBC) are connected with a cable.
If they are directly connected (vertically or horizontally) the use of J2 is optional.


The trasparent SER_USB port (J4)

The uCom has a “transparent” USB-serial adapter connector, so you can upload firmware to the Z80-MBC2 (or V20-MBC (using Arduino IDE) or load an Intel-Hex file (with iLoad) or use XMODEM to exchange files with a PC (running a terminal emulator that supports XMODEM file transfer) while the uCom is in use.
Both the “mixed” power supply scenarios (USB-serial adapter not powered from USB but Z80-MBC2 (or V20-MBC powered and vice-versa) are managed by the HW, so you don't need to worry about it.

Custom 3D printed angled brackets

For a solid vertical mounting two 3D printed angled brackets have been created.



The 3D .STL files are the same used for the uTerm, so you can find them there (in the File section).

Custom 3D printed straight brackets

For a solid horizontal mounting two 3D printed straight brackets have been created.




The 3D .STL files are the same used for the uTerm, so you can find them there (in the File section).

How to get a PCB

I've prepared an “easy link” to order a small lot (min. 5 pcs) of PCB here.

How to get a Kit or an Assembled unit

If you are looking for a kit with all the needed parts (including the 3D printed parts) or an assembled unit ready to use there is a professional seller that can sell both and ship worldwide.

The link to the seller is this one.

Credits & License

All the project files are licensed under GPL v3.

Files

Schematic.
A221218-R090419_SCH.pdf.

PCB Assembling Guide.
A221218-R090419_Assembling_Guide.zip.

BOM file.
A221218-R090419_BOM.ods.

PCB Gerber files (100mm x 53mm).
A221218-R090419_Gerber.zip.


ucom.txt · Last modified: 2020/12/14 20:05 by admin

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