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NTerm2-S-FT231

RetepV·nTerm2-S-FT231

NTerm2-S-FT231 PCB layout, top view — open source ESP32 board by RetepV
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About the NTerm2-S-FT231 PCB

NTerm2-S-FT231 is an open source ESP32 PCB design by RetepV, published on GitHub. It is a 2-layer board measuring 147.3 × 55.9 mm, with 117 components from 59 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the LM386, MAX3232E, DS2417, NCP1117-3.3_SOT223 and USBLC6-2SC6. By type, the board carries 45 resistors, 33 capacitors, 9 diodes, 8 transistors, 7 ICs and 7 connectors.

It belongs with the usb & debug tools designs in this gallery.

From the project

This is my rendition of the uTerm2-S by Just4Fun (https://hackaday.io/project/181583-uterm2-s-a-multi-emulation-color-rs232-terminal). My one is in SMD, and I hopefully made it easily hand-solderable for everyone. Obviously the 'n' in nTerm stands for 'nano.' :P

This is my rendition of the uTerm2-S by Just4Fun (https://hackaday.io/project/181583-uterm2-s-a-multi-emulation-color-rs232-terminal). My one is in SMD, and I hopefully made it easily hand-solderable for everyone. Obviously the 'n' in nTerm stands for 'nano.' :P

The nTerm2-S has a slightly more usable form than the uTerm2-S, I think. Smaller and more of a format of a useful tool. A "throw it in a drawer and grab it when you need it"- type of device. Taking little desk space and layed out for quick plugging and unplugging serial devices. For that I have also made it so that it can switch…

NTerm2-S-FT231, from the project README
From the project README

Main components on the NTerm2-S-FT231

ESP32-WROOM-32LM386MAX3232EDS2417NCP1117-3.3_SOT223USBLC6-2SC6FT231XS

NTerm2-S-FT231 bill of materials (BOM)

117 components, 59 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROOM-32
U1
1
LM386
U2
1
MAX3232E
U3
1
DS2417
U4
1
NCP1117-3.3_SOT223
U5
1
USBLC6-2SC6
U6
1
FT231XS
U7
8
BC817
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
1
32.768MHz
Y1
1
VGA
J1
1
Keyboard
J2
1
Mouse
J3
1
Line-out/Speaker
J4
1
USB_C_Receptacle_USB2.0_16P
J6
1
Line-out/Speaker
J7
1
10K pot
J8
1
CR2032
BAT1
3
IM41 3V
K1, K2, K3
1
IO0
SW1
1
RESET
SW2
Show 39 more
QtyPartRefs
1
DEFAULTS
SW3
5
BAT43W-V
D1, D6, D8, D9, D10
1
1N5819
D3
1
LED
D4
2
LED_Dual_AKAK
D11, D12
1
220u
C1
1
100u
C2
1
10u
C3
1
47n
C4
1
2.2n
C5
4
100n
C6, C7, C28, C33
7
0.1u
C8, C9, C10, C11, C12, C19, C21
1
10u/25v
C13
1
0.1u/25v
C14
4
1n
C15, C16, C22, C24
1
1u
C17
1
100u
C18
1
10u
C20
1
100u/25V
C23
3
470u
C25, C26, C27
2
47p
C29, C30
2
10p
C31, C32
3
820
R1, R3, R5
3
390
R2, R4, R6
2
220
R7, R8
7
2K2
R9, R10, R13, R14, R32, R33, R34
4
120
R11, R12, R15, R16
1
10
R17
5
10K
R18, R19, R22, R23, R40
1
150
R20
1
270
R21
3
470
R24, R25, R28
2
12K
R26, R29
1
5K
R27
5
2K
R30, R35, R36, R37, R38
2
4K7
R31, R43
1
4.7K
R39
2
27
R41, R42
2
5.1k
R44, R45

NTerm2-S-FT231 design files

The KiCad project lives in the RetepV/nTerm2-S-FT231 repository on GitHub; these links point at the commit this page was built from.

NTerm2-S-FT231: common questions

What microcontroller does the NTerm2-S-FT231 use?

The NTerm2-S-FT231 is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the NTerm2-S-FT231 PCB?

The NTerm2-S-FT231 measures 147.3 × 55.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the NTerm2-S-FT231?

117 components, from 59 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the NTerm2-S-FT231 design files?

From the RetepV/nTerm2-S-FT231 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the NTerm2-S-FT231 design in my own project?

The repository has no license, so all rights stay with RetepV. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the NTerm2-S-FT231 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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