View source for KAmod USB-UART-mini

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===== Description =====
<b>[https://kamami.pl/konwertery-usb---uart--rs232/1190298-kamod-usb-uart-mini-miniaturowy-konwerter-usb-uart-5906623433421.html KAmod USB-UART-mini]</b> is a USB-C interface converter to the UART serial interface with small dimensions - only 20.5x10.5 mm. The module is based on the FT230XS system and has only basic signal lines - RX and TX, which operate at a voltage of 3.3 V. Additionally, the module contains communication indicators in the form of miniature LEDs. Optionally, the converter can be equipped with a front panel, which allows easy and aesthetic mounting of the module on the wall of almost any housing.

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[[File:KAmod_USB-UART-mini_3.jpg|430px]]
[[File:KAmod_USB-UART-mini_1.jpg|500px]]

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===== Basic parameters =====
* The converter is based on the FTDI FT230XS chip
* Compatible with USB 2.0 Full Speed
* Drivers for Windows/Linux/Mac systems
* On the USB interface side it contains a USB-C connector
* Contains only the basic UART interface signal lines - RX and TX
* 5 V power supply supplied to the USB connector
* The voltage level for serial interface signals is 3.3 V (tolerates 5 V voltage at the input)
* Optionally, the voltage level for serial interface signals can be set to 5 V
* Communication speed (bit rate): 300 bps...3 Mbps
* LEDs indicating communication
* Small board dimensions 20.5x10.5 mm, height approx. 7 mm
* Optionally, it can be equipped with a front panel, which allows easy and aesthetic installation of the module on the wall of almost any housing

===== Standard equipment =====
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{| class="wikitable" style="width: 1000px;"
|-
! style="text-align: center;"|Code
! style="text-align: center;"|Description
|-
| style="text-align: center;"|<b>KAmod USB-UART-mini</b>
| style="text-align: left;"|
* Assembled and started module
* Front panel (to be soldered)
* Straight goldpin male connector (to be soldered)
* Angled goldpin male connector (to be soldered)
|}
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===== Electrical diagram =====
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[[File:KAmodUSB-UART-mini sch.jpg|none|1000px|thumb|center]]
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=====USB interface connector =====
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{| class="wikitable" style="width: 1000px;"
|-
! style="text-align: center;"|Connector
! style="text-align: center;"|Function
|-
| style="text-align: center;"|<b>USB-C</b>
| style="text-align: left;"|
* It implements communication in the USB 2.0 Full Speed standard
* It provides 5 V power
|}
</center>
The USB-C connector is small, but convenient to use and resistant to damage. Additionally, it allows for the conduction of significant currents and can be used in the latest generation of interfaces - USB 3.x. These features make USB-C replace the old standards of USB connectors in many applications, which is why KAmod USB-UART-mini has been equipped with a USB-C connector.
<br><br>

<center>
[[File:KAmodUSB-UART-mini_1.jpg|300px]]
</center>
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=====Serial interface connector =====
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{| class="wikitable" style="width: 1000px;"
|-
! style="text-align: center;"|Connector
! style="text-align: center;"|Function
|-
| style="text-align: center;"|<b>RX, TX, 5V, GND</b>
| style="text-align: left;"|
* RX and TX signals of the serial UART interface are derived
* 5 V power supply connected to the USB connector
|}
</center>
The serial interface connector is adapted to mount goldpin pins with a pitch of 2.54 mm, but it also allows for soldering wires directly to the converter board. The signals derived on the connector are as follows:
:* <b>TX</b> – data output from the serial UART interface;
:* <b>RX</b> – data input to the UART interface;
:* <b>5V</b> – power output with a value of approx. 5 V supplied to the USB connector;
:* <b>GND</b> – power/signal ground.

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[[File:KAmodUSB-UART-mini_2.jpg|360px]]
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=====Voltage level on UART interface lines =====
The RX and TX lines of the UART interface operate at a voltage of 3.3 V. Additionally, the RX input tolerates higher voltages, up to a maximum of 5 V.<br><br>
Optionally, the module can be configured so that the RX and TX lines of the UART interface operate at a voltage of 5 V. Permanently shorting the pads located on the bottom of the board, marked "<b>Vio=5V</b>", with a drop of hot solder, will cause the interface to operate at a voltage of 5 V.
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[[File:KAmodUSB-UART-mini_3.jpg|300px]]

[[File:KAmod_USB-UART-mini_2a.jpg|500px]]

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=====Signaling =====
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{| class="wikitable" style="width: 1000px;"
|-
! style="text-align: center;"|Type
! style="text-align: center;"|Function
|-
| style="text-align: center;"|<b>LEDs</b>
| style="text-align: left;"|
* Signaling of data transmission and reception
|}
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There are 2 miniature LEDs on the converter board, which signal the flow of data between the interfaces.
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<center>
[[File:KAmodUSB-UART-mini_4.jpg|300px]]
</center>

=====Dimensions=====
The KAmod USB-UART-mini converter has small dimensions, the board measures 20.5x10.5 mm, and its heightis approx. 7 mm.

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[[File:KAmodUSB-UART-mini_5.jpg|360px]]

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=====Mounting in the housing=====
The KAmod USB-UART-mini converter can optionally be equipped with a front panel, which allows easy and aesthetic mounting of the module on the wall of almost any housing. The dimensions of the front panel are shown in the drawing below.
<br><br>
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[[File:KAmodUSB-UART-mini_6.jpg|500px]]
</center>
<br>
Mounting the converter requires making a main hole with a diameter of 11 mm and two holes in one line, for mounting screws with a diameter of approx. 2...3 mm at a distance of 8.75 mm from the center of the main hole. An example of the assembly is shown in the photos:
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<center>
[[File:KAmod_USB-UART-mini_5.jpg|400px]]
[[File:@KAmodUSB-UART-mini_2.jpg|400px]]
[[File:@KAmodUSB-UART-mini_3.jpg|400px]]
[[File:@KAmodUSB-UART-mini_4.jpg|400px]]
</center>

=====External links=====
*[https://wiki.kamamilabs.com/images/1/10/FT230X.pdf FTDI FT230XS datasheet]
*[https://ftdichip.com/drivers/vcp-drivers/ FTDI drivers]