Nextion Foca Max 5V2A Output USB To TTL Serial Converter Board

USD$8.90

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Foca Max is a USB to TTL serial converter board. With a 8-26V DC external power input, Foca Max brings a stable power source and convenience of USB to TTL communication for all series and sizes of Nextion HMI display

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Description
Additional information
Reviews&QA

Foca Max is a USB to TTL serial converter board with maximum 5.5V2A output. For USB to TTL conversion, the Foca Max can be power supplied by USB only or USB together with external DC 8-26V, The USB and external DC power supplies are isolated by using a diode (SS34) to avoid the current backflowed between them.

Note: as for the Nextion HMI display size less than 4.3'', you can only use the USB for power supply, size large than 4.3'', a external DC 8-26V for power supply is recommended.

Features:

SILABS CP2102 chip, maximum baud rate of 2Mbps
High-power and energy-efficient DC-DC converter chip TPS54331 with 8-26V wide voltage input and 5V2A output
Solid capacitors, high Q inductors components
LED indicators for input/output power and TX/RX communication
Small voltage ripple within 100mA
Plug and Use, no firmware programming required

Specification:

Model name: Foca Max

USB Voltage input: 5-5.5V

USB type: USB 2.0

DC Input: DC 8-26V

DC Power Socket: DC-005 (5.5*2.1mm)

Voltage output: 5-5.5V

Current output: 2A（maximum）

Voltage ripple: <100mV

Working temperature: -20°C ~ 70°C

PCB size: 50mm*50mm*1.6mm

Max baud rate: 2Mbps

TTL level: 3.3V

In the box：

Foca Max*1
USB wire*1
XH2.54 4P wire*1

Additional information

Weight	100.7 g
Dimensions	50 × 50 × 12 mm
Brand	Nextion
Model name	Foca Max
USB Voltage input	5-5.5V
USB type	USB 2.0
DC Input	DC 8-26V
DC Power Socket	DC-005 (5.5*2.1mm)
Voltage output	5-5.5V
Current output	2A（maximum）
Voltage ripple	<100mV
Working temperature	-20°C ~ 70°C
PCB size	50mm50mm1.6mm
Max baud rate	2Mbps
TTL level	3.3V

comments on FOCA MAX

Very very happy with the Foca Max, it worked straight out of the box. The SD card reader in my 7" Enchanced display had stopped working and I had tried a couple of USB to TTl converters but without sucess. While I was checking the cost of a replacement display I noticed the Foca Max.
Only comment would be lack of documentation - What is the function of the switch? I did use an external 5v supply but left the switch as delivered!
Another comment relates to the transfer speed my unit auto selected 115000 total load time 1m18sec! how do change to 1mB?
But I am very pleased save me having to purchase a new display.
Thank you.

Ok product

Easy peasy

The product provides a simple solution to provide power to the main card as well as to other relays and contacts. The USB input is especially important if the display is mounted to a control panel using the back cover. When mounted to a panel the input access to the micro SD card reader is virtually impossible to reach and thus a different access point has to be found. While there is an extender for the micro SD card, this also is useless when the display is mounted using the back cover.

Works gteat

Works great

Allows download to HMI with speed of around 1mbit / s.
As power supply it is quite efficient, it doesn't get hot even after long use.

Only bad thing is USB A connector which is normally on host not on device, so you need special cable (included) with 2 USB A connectors. Luckily included cable is long enough for me.
Why don't you use USB B or USB mini or USB micro or USB C (it will be much easier to get replacement cable in case if you need longer one or if you damage included cable).