2 layers66.9 × 74.5 mm
2 layers50 × 40 mm
M252
mhorimoto/M252TB2 adapter for M302
- Size
- 50 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 21
- Pads
- 59
- Tracks, vias
- 129, 1
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 8 Dec 2024
- Updated
- 30 Mar 2025
Overview
M252 is an open-source printed circuit board by mhorimoto, from the mhorimoto/M252 repository on GitHub. It is a 2-layer board of 50 × 40 mm with 20 parts on 21 nets, routed with 129 tracks and 1 via.
It is built around the PIC16F1827-I/P. Its parts include 5 capacitors, 5 resistors, 3 connectors, 1 IC and 1 transistor. It belongs with the PIC boards of this library.
Main components
1README
README.mdM252
TB2で使用したPICのシリアル出力をM302Kに接続するためのアダプタ。 M302Kの接続先はU1のHV側に接続する。
Arduino UNO側のD6,D7が接続対象となる。 接続速度は、19200bps。
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 0.1uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C101, C104, C105 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R101, R105 |
| 2 | 22pF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C102, C103 |
| 1 | !MCLR | HOLLY2:TVDT18-050 | SW101 |
| 1 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R103 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R104 |
| 1 | 10MHz | Crystal:Crystal_HC49-4H_Vertical | Q101 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R102 |
| 1 | PIC16F1827-I/P | Package_DIP:DIP-18_W7.62mm_Socket_LongPads | IC101 |
| 1 | PROG | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J102 |
| 1 | TRIP | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J103 |
| 1 | UART | Connector_JST:JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J101 |
The 16 most common of 20 parts.
Questions
How big is the M252 PCB?
It measures 50 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the M252 use?
20 parts, built around the PIC16F1827-I/P. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the M252 KiCad files?
From the mhorimoto/M252 repository on GitHub, at the commit this page was made from: the board is M252/M252.kicad_pcb and its schematic M252/M252.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the M252 design in my own project?
Its repository states no licence, so its author keeps all rights: ask mhorimoto before reusing the design.
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