HardLabs

TC Interface Board

jtsuka·NTC-1A-Control·KiCad/TC_Interface_Board-Freerouting-old/TC_Interface_Board.kicad_pcb

TC Interface Board layout, top view — open source ESP32 board by jtsuka

About the TC Interface Board

TC Interface Board is an open source ESP32 PCB design by jtsuka, published on GitHub. It is a 2-layer board measuring 68.9 × 121.6 mm, with 30 components from 23 distinct parts.

Its main chip is the XIAO-ESP32S3, from the ESP32 family. By type, the board carries 12 connectors, 6 resistors, 5 diodes, 3 capacitors, 2 transistors and 1 IC.

From the project

NTC-1A-Control for TEST

MC34063 のロード時電圧ドロップ (-8% 程度) を考慮すると、計算値と実測値は完全に整合する。

これは回路図起こし時の読み取り違いと判明。「青-赤-赤」(6.2k) と「茶-赤-黒」(12k) を視認で読み間違えた可能性が高い。

C3 = 470uF/16V を考えると、出力 15V (実用時) は耐圧ぎりぎりの設計。 Nitta の設計者は「15V 動作前提の DC-DC」として MC34063 を構成していたと判明。

Main components on the TC Interface Board

XIAO-ESP32S3

TC Interface Board bill of materials (BOM)

30 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-ESP32S3
MC34063AP
U1
2
2N7000
DTC143E
Q1, Q2
1
CONN_01X04_SOCKET
JST_VH_01x05
J1
1
JST_VH_01x04
J1_24V1
1
JST_VH_01x03
J1_CN1
1
J2_PI_01X06_SOCKET
JST_VH_01x05
J2
2
JST_VH_01x02
J2_CN1, J3_CN1
6
JST_VH_01x05
J3, J4, J5, J6, J7, J8
1
BAT43
1N4148
D1
1
BAT43
1N4148
D2
1
1N4007
D3
1
1N5819
D4
1
1N4148
D5
1
330uH
L1_Inductor1
1
4.7UF
470pF 100V
C1
1
0.1UF
1000uF 35V
C2
1
101
470uF 16V
C3
1
220
R1
1
100K
10k
R2
1
39K
1k2
R3
Show 3 more
QtyPartRefs
1
100R
6k2
R4
1
10K
0R22
R5
1
3K3
1k
R6

TC Interface Board design files

The KiCad project lives in the jtsuka/NTC-1A-Control repository on GitHub; these links point at the commit this page was built from.

TC Interface Board: common questions

What microcontroller does the TC Interface Board use?

The TC Interface Board is built around the XIAO-ESP32S3, from the ESP32 family.

How big is the TC Interface Board?

The TC Interface Board measures 68.9 × 121.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TC Interface Board?

30 components, from 23 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 TC Interface Board design files?

From the jtsuka/NTC-1A-Control 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 TC Interface Board design in my own project?

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

Can I test firmware for the TC Interface Board 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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