Trhmsx
wagnertavares·trhmsx·hardware/trhmsx/trhmsx.kicad_pcb
About the Trhmsx PCB
Trhmsx is an open source ESP8266 PCB design by wagnertavares, published on GitHub. It is a 4-layer board measuring 150.4 × 120.4 mm, with 120 components from 39 distinct parts.
Its main chip is the ESP-01, from the ESP8266 family. Other key parts include the EPCS4, EP1C12Q240C8N, AMS1117-1.5, AMS1117-3.3 and NC7WZU04P6X. By type, the board carries 55 resistors, 32 capacitors, 13 connectors, 9 diodes, 7 ICs and 2 switches.
It belongs with the keyboards, audio and iot & wireless designs in this gallery.
From the project
TRHMSX - Simple FPGA MSX2+ clone
ATTENTION! THIS IS A WORK IN PROGRESS PROJECT!
MSX computers hold a significant place in computing history, and their legacy continues to be celebrated through innovative approaches like FPGA synthesis. Field-Programmable Gate Arrays (FPGAs) provide a unique platform for recreating the MSX architecture, offering a flexible and efficient way to re-create the hardware.

Main components on the Trhmsx
Trhmsx bill of materials (BOM)
120 components, 39 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | EPCS4 | SO08 | IC1 |
| 1 | EP1C12Q240C8N | QFP50P3460X3460X410-240N | U1 |
| 1 | AMS1117-1.5 | SOT-223-3_TabPin2 | U2 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U3 |
| 1 | NC7WZU04P6X | SOT65P210X110-6N | U4 |
| 1 | MT48LC16M16A2TG | TSOP-II-54_22.2x10.16mm_P0.8mm | U5 |
| 1 | M51953BFP | SO08 | U6 |
| 1 | 21.47727 MHz | Crystal_HC49-U_Vertical | Y1 |
| 1 | MODULE-12V | PinSocket_1x05_P2.54mm_Vertical | J1 |
| 1 | ESP-01 | PinSocket_2x04_P2.54mm_Vertical | J2 |
| 1 | Barrel_Jack | BarrelJack_Horizontal | J3 |
| 1 | MICRO-SD | Conn_uSDcard | J4 |
| 2 | CONN_01X02 Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J5, J17 |
| 1 | KEYBOARD-USB | TE_6364372-2 | J6 |
| 1 | KEYBOARD-PS2 | TE_5749180-1 | J7 |
| 1 | CONN_02X05_ODD_EVEN Conn_02x05_Odd_Even | PinHeader_2x05_P2.54mm_Vertical | J8 |
| 1 | AUDIOJACK2_GROUND AudioJack2_Ground | PJ-307 | J11 |
| 1 | PJRAN1X1U02AUX | SWITCHCRAFT_PJRAN1X1U02AUX | J12 |
| 1 | CART2 | TE_5530841-5 | J13 |
| 1 | CART1 | TE_5530841-5 | J16 |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Fuse | Fuse_1210_3225Metric | F1 |
| 1 | SW_DIP_X08 SW_DIP_x08 | SW_DIP_SPSTx08_Piano_10.8x21.88mm_W7.62mm_P2.54mm | SW1 |
| 1 | SW_Push | SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | SW2 |
| 9 | LED3 | LED_0805_2012Metric | D1, D2, D3, D4, D5, D6, D7, D8 +1 |
| 8 | 220UF 220uF | CP_Elec_6.3x3 | C1, C5, C8, C28, C29, C30, C31, C32 |
| 19 | 0.1UF 0.1uF | C_0805_2012Metric | C2, C3, C4, C6, C7, C9, C10, C11 +11 |
| 2 | 27PF 27pF | C_0805_2012Metric | C13, C14 |
| 1 | 2.2UF 2.2uF | C_0805_2012Metric | C25 |
| 2 | 4.7UF 4.7uF | C_0805_2012Metric | C26, C27 |
| 2 | 10K | R_0805_2012Metric | R1, R2 |
| 2 | 10 | R_0805_2012Metric | R3, R7 |
| 3 | 1K | R_0805_2012Metric | R4, R5, R6 |
| 2 | 100 | R_0805_2012Metric | R8, R9 |
| 1 | 22 | R_0805_2012Metric | R10 |
| 1 | 1M | R_0805_2012Metric | R11 |
| 28 | 100 | R_Array_Convex_4x0603 | RN1, RN2, RN3, RN4, RN5, RN6, RN7, RN8 +20 |
| 5 | 10K | R_Array_Convex_4x0603 | RN12, RN25, RN26, RN35, RN44 |
| 3 | 1K | R_Array_Convex_4x0603 | RN17, RN18, RN24 |
| 8 | 200 | R_Array_Convex_4x0603 | RN27, RN28, RN29, RN30, RN31, RN32, RN33, RN34 |
Trhmsx design files
The KiCad project lives in the wagnertavares/trhmsx repository on GitHub; these links point at the commit this page was built from.
Trhmsx: common questions
What microcontroller does the Trhmsx use?
The Trhmsx is built around the ESP-01, from the ESP8266 family.
How big is the Trhmsx PCB?
The Trhmsx measures 150.4 × 120.4 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Trhmsx?
120 components, from 39 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 Trhmsx design files?
From the wagnertavares/trhmsx 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 Trhmsx design in my own project?
The repository has no license, so all rights stay with wagnertavares. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Trhmsx without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.
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