4 layers100 × 100 mm
Tfr903f
strickyak/tfr9
The TFR/9 Single Board Computer for Hitachi 6309E or Motorola 6809E CPUs (TFR/901)
48 parts12MIT
4 layers82.8 × 62.8 mm
Tfr911h
strickyak/tfr912The TFR/9 Single Board Computer for Hitachi 6309E or Motorola 6809E CPUs (TFR/901)
- Size
- 82.8 × 62.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 116
- Nets
- 86
- Pads
- 408
- Tracks, vias
- 1,392, 100
- Pours
- 121
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Jul 2024
- Updated
- 29 Oct 2026
Overview
Tfr911h is an open-source printed circuit board by strickyak, from the strickyak/tfr9 repository on GitHub, published under the MIT licence. It is a 4-layer board of 82.8 × 62.8 mm with 116 parts on 86 nets, routed with 1,392 tracks and 100 vias.
It is built around the HC-1.0-3PWT, RCLAMP0521P.TCT-MS and K2-1808SN-A4SW-01. Its parts include 26 capacitors, 12 resistors, 5 ICs, 4 diodes and 2 connectors. It belongs with the computers and single-board computers boards of this library.
Main components
3
HC-1.0-3PWT
SMD,P=1mm,卧贴-25℃~+85℃ 1 1A 1mm 1x3P 3 3.2mm 3P 5.05mm 5.3mm 50V Auxiliary Solder Pin LCP Phosphor bronze SH Surface Mount, Right Angle Tin UL94V-0 SMD,P=1mm,Surface Mount，Right Angle Wire To Board Connector ROHSHCTLWire To Board Connector
RCLAMP0521P.TCT-MS
04020.25pF 100W@8/20us 100nA 25V 4A 5V 6V Bidirectional IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 TVS 0402 ESD and Surge Protection (TVS/ESD) ROHSMSKSEMIESD And Surge Protection (TVS/ESD)
K2-1808SN-A4SW-01
SMD,4.2x3.3mm-25℃~+85℃ 100,000 cycles 12V 2.5N 2.5mm 3.25mm 4.2mm 50mA Oval Button SPST Surface Mount,Vertical SMD,4.2x3.3mm Tactile Switches ROHSHRO ElectronicsTactile Switches
README
tfr911h/README.mdRP2350B-Dev-Board
This is an RP2350B Dev board that breaks out all 48 GPIO pins.
It follows the original footprint of the RP2040 dev board, but adds 10 pins on each side.
It is not pin compatible with the original RP2040, though a version that shares the same pinout, at least for the first 20 pins on each side would be interesting.
Pinout:
1 GPIO0 60 VBUS
2 GPIO1 59 VSYS
3 GPIO2 58 GND
4 GPIO3 57 3v3
5 GPIO4 56 3v3_EN
6 GPIO5 55 ADC_VREF
7 GPIO6 54 GND
8 GPIO7 53 GPIO47/ADC7
9 GPIO8 52 GPIO46/ADC6
10 GPIO9 51 GPIO45/ADC5
11 GND 50 GPIO44/ADC4
12 GPIO10 49 GND
13 GPIO11 48 GPIO43/ADC3
14 GPIO12 47 GPIO42/ADC2
15 GPIO13 46 GPIO41/ADC1
16 GPIO14 45 GPIO40/ADC0
17 GPIO15 44 GPIO39
18 GPIO16 43 GPIO38
19 GPIO17 42 GPIO37
20 GPIO18 41 GPIO36
21 GPIO19 40 GPIO35
22 GND 39 GND
23 GPIO20 38 GPIO34
24 GPIO21 37 GPIO33Production files for JLCPCB
The production files for JLCPCB are in the 'production' directory.
RP2350_Dev_board.zip is the zipped Gerber files.
bom.csv and positions.csv are the Bill of materials and placements files respectively.
These were produced with the 'Fabrication Toolkit' plugin, which you will need to install if you need to regenerate them.
Source Designs
Thie design borrows from https://pro.easyeda.com/editor#id=a0a21c97b13d436db5579fc2a8b1625d, which is an RP2350A design. I adapted it for the RP2350B, but it shares most of the schematic, if not the PCB layout.
I also looked at the RP2350B reference designs available here: https://datasheets.raspberrypi.com/rp2350/Minimal-KiCAD.zip
Parts
116| Qty | Value | Footprint | References |
|---|---|---|---|
| 60 | Castellated Pad | My Stuff:Castellated Pad | 3V3_EN1, 3V31, ADC_VREF1, GND1, GND2, GND3, GND4, GND4, GND6, GPI10, GPIO0, GPIO1, GPIO1, GPIO1, GPIO1, GPIO1 +44 |
| 14 | 100nF | PCM_JLCPCB:C_0402 | C1, C2, C3, C4, C5, C6, C7, C8, C9, C13, C14, C15, C16, C36 |
| 3 | 100nF | PCM_JLCPCB:C_0603 | C21, C38, C39 |
| 3 | 10uF | PCM_JLCPCB:C_0603 | C20, C37, C40 |
| 3 | 33Ω | PCM_JLCPCB:R_0402 | R2, R3, R6 |
| 3 | 4.7uF | PCM_JLCPCB:C_0603 | C10, C11, C12 |
| 2 | 15pF | PCM_JLCPCB:C_0402 | C17, C18 |
| 2 | 5.1kΩ | PCM_JLCPCB:R_0402 | R1, R4 |
| 2 | RCLAMP0521P.TCT-MS | RP2350 Dev Board:D0402-BI | D2, D3 |
| 1 | 100kΩ | PCM_JLCPCB:R_0402 | R11 |
| 1 | 1kΩ | PCM_JLCPCB:R_0603 | R28 |
| 1 | 1kΩ | PCM_JLCPCB:R_0402 | R5 |
| 1 | 1Ω | PCM_JLCPCB:R_0603 | R7 |
| 1 | 200Ω | PCM_JLCPCB:R_0603 | R8 |
| 1 | 2kΩ | PCM_JLCPCB:R_0402 | R12 |
| 1 | 4.7uF | PCM_JLCPCB:C_0402 | C19 |
| 1 | 5kΩ | PCM_JLCPCB:R_0402 | R9 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | Conn_02x10_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x10_P2.54mm_Vertical_SMD | J3 |
| 1 | HC-1.0-3PWT | EasyEDA:CONN-SMD_3P-P1.0-HC-1.0-3PWT | U2 |
| 1 | K2-1808SN-A4SW-01 | RP2350 Dev Board:KEY-SMD_4P-L4.2-W3.2-P2.20-LS5.1-TL | Reset1 |
| 1 | K2-1808SN-A4SW-01 | EasyEDA:KEY-SMD_4P-L4.2-W3.2-P2.20-LS5.1-TL | Boot1 |
| 1 | MC6809E | Package_DIP:DIP-40_W15.24mm | U5 |
| 1 | Red | RP2350 Dev Board:LED0603-RD_RED | LED25 |
| 1 | Red | PCM_JLCPCB:D_0603 | PWR_LED1 |
| 1 | TestPoint_Alt | MountingHole:MountingHole_2.2mm_M2_Pad_Via | TP1 |
| 1 | W25Q128 | PCM_JLCPCB:SOIC-8_L5.3-W5.3-P1.27-LS8.0-BL | U4 |
| 1 | ~ | RP2350 Dev Board:CRYSTAL-SMD_4P-L3.2-W2.5-BL | X1 |
| 1 | ~ | EasyEDA:SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR | U3 |
| 1 | ~ | EasyEDA:POWERDI-123_L2.8-W1.8-LS3.7-RD | D1 |
| 1 | ~ | EasyEDA:USB-C-SMD_TYPE-C-6PIN-2MD-073 | USB1 |
| 1 | ~ | RP2350 Dev Board:IND-SMD_L2.0-W1.6_AOTA-B201610S3R3-101-T | L1 |
| 1 | ~ | EasyEDA:QFN-80_L10.0-W10.0-P0.40-TL-EP3.4 | U1 |
More from strickyak/tfr9
4- 2 layers149.9 × 100 mm
Tfr901g
strickyak/tfr9
The TFR/9 Single Board Computer for Hitachi 6309E or Motorola 6809E CPUs (TFR/901)
35 parts12MIT - 2 layers100 × 100 mm
Tfr905h
strickyak/tfr9
The TFR/9 Single Board Computer for Hitachi 6309E or Motorola 6809E CPUs (TFR/901)
35 parts12MIT - 2 layers87.4 × 55.4 mm
Hat fuji-41d
strickyak/tfr9
The TFR/9 Single Board Computer for Hitachi 6309E or Motorola 6809E CPUs (TFR/901)
28 parts12MIT
Similar boards
- 4 layers97.6 × 96 mm
Centipede-32e
strickyak/copico-centipede
A Radio Shack / Tandy Color Computer ("Coco") wildcard peripheral cartridge, with an RP2350 processor and 46 usable GPIO lines, covering most of the Coco's expansion port bus.
135 parts7MIT - 4 layers93.5 × 81 mm
- 4 layers56.8 × 21 mm
Rp2350b pico
Charading/rp2350b-pico
I wanted a board similar to the rp2040 pico so i just designed my own, it's extended by two more pins, in order to break out a ton of gpio and also all 8 ADC pins
59 parts - 2 layers46 × 21 mm
Usb
efogdev/nrf54l15-module
nRF54L15 module with full IO set and external DC-DC regulator for maximum efficiency
28 parts12 - 4 layers21 × 35.1 mm
- 2 layers223.5 × 160 mm
- 4 layers150 × 85 mm
DetentOne
alislaboratory/detentOne
A Customisable BLE Macropad with a Haptic Knob and OLED.
98 parts2MIT - 4 layers82.1 × 21 mm
Pico stretch2
jvanderberg/pico-stretch2
An RP2350B dev board that breaks out all 48 GPIO pins while following the original Raspberry Pi Pico footprint for the first 20 pins on each side.
70 parts2
Questions
How big is the Tfr911h PCB?
It measures 82.8 × 62.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Tfr911h use?
116 parts, built around the HC-1.0-3PWT, RCLAMP0521P.TCT-MS and K2-1808SN-A4SW-01. 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 Tfr911h KiCad files?
From the strickyak/tfr9 repository on GitHub, at the commit this page was made from: the board is tfr911h/tfr911h.kicad_pcb and its schematic hat-fuji-40c/hat-fuji-40c.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tfr911h design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).