2 layers208.8 × 393.9 mm
Ferris
pierrechevalier83/ferris
A low profile split keyboard designed to satisfy one single use case elegantly
114 parts1.3k
2 layers208.8 × 396.9 mm
A low profile split keyboard designed to satisfy one single use case elegantly
- Size
- 208.8 × 396.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 145
- Nets
- 153
- Pads
- 839
- Tracks, vias
- 1,906, 87
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 30 May 2020
- Updated
- 7 Apr 2024
Overview
Ferris is an open-source printed circuit board by pierrechevalier83, from the pierrechevalier83/ferris repository on GitHub. It is a 2-layer board of 208.8 × 396.9 mm with 145 parts on 153 nets, routed with 1,906 tracks and 87 vias.
It is built around the STM32F072CBT6, MCP1700T-3302E/TT(MS) and MCP23017-E/SO, with the SRV05-4, 1N4148W and FM-B2020RGBA-HG among its other parts. Its parts include 37 diodes, 35 switches, 17 capacitors, 14 resistors and 6 ICs. It belongs with the keyboards and input boards and the STM32 boards of this library.
Main components
12
STM32F072CBT6
LQFP-48(7x7)-40℃~+85℃ 1.65V~3.6V 128KB 12bit 12bit 16KB 32 Bit 37 48MHz ARM Cortex-M0 Built-in FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
MCP1700T-3302E/TT(MS)
SOT-23-40℃~+85℃@(Ta) 1 120uVrms 180mV@(300mA) 2uA 3.3V 300mA 5.5V 80dB@(100Hz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-23 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
MCP23017-E/SO
SOIC-28-300mil-40℃~+85℃ 1.7MHz 1.8V~5.5V 16 1uA 600mV 8 8mA I2C Interrupt Output Reset function、Cascade and address expansion SOIC-28-300mil I/O Expanders ROHSMicrochip TechnologyI/O Expanders
SRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
FM-B2020RGBA-HG
SMD,2.1x2.1mm-30℃~+85℃ 110° 1mm 2.1mm 2.1mm B:460nm~480nm、R:615nm~630nm、G:515nm~540nm Common Anode R:1.6V~2.4V、G:2.4V~3.2V、B:2.4V~3.2V R:20mA、G:20mA、B:20mA R:30mcd~110mcd、G:90mcd~270mcd、B:12mcd~40mcd R:48mW、G:64mW、B:64mW SMD,2.1x2.1mm RGB LEDs ROHSFoshan NationStar OptoelectronicsRGB LEDs
PJ-320A
插件-20℃~+70℃ 3.5mm Headphone Jack 30V 500mA 插件 Audio Connectors ROHSXKB ConnectionAudio Connectors (Headphones)
B3U-1000P
SMD,3x2.5mm-25℃~+70℃ 1.53N 1.6mm 12V 2.5mm 3mm 50mA Round Button SMD(SMT) Tab SPST Surface Mount,Vertical SMD,3x2.5mm Tactile Switches ROHSOmronTactile SwitchesPDTC123JT,215
SOT-23-65℃~+150℃ 1 NPN (Pre-Biased) 1.1V@5mA,0.3V 100 100mA 100mV 100nA 10V 2.2kΩ 230MHz 250mW 26 500mV@100uA,5V 50V NPN SOT-23 Digital Transistors ROHSNexperiaDigital TransistorsRB060M-30TR
SOD-12310uA@30V 2A 30V 440mV@2A 55A Independent SOD-123 Schottky Diodes ROHSROHM SemiconductorSchottky Diodes
SMF9.0CA
SOD-123FLESD And Surge Protection (TVS/ESD)hongjiacheng
TYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
README
0.2/mini/readme.mdFerris 0.2 - Mini
The Ferris 0.2 mini is the tiniest Ferris in all dimensions:
- It uses choc mini switches, like the Ferris 0.1 Low to reduce the keyboard's depth.
- It uses choc spacing between keys, like the Ferris 0.1 and 0.2 compact.
- It has no extra feature needing extra space.
Reminder that like for the Ferris 0.1 low, this keyboard uses uncommon and less readily available "choc mini" switches that can be acquired from Kailh's store on AliExpress:
- Listing for choc mini white (clicky) switches
- Listing for choc mini brown (tactile) and black (linear) switches
Specific features:
- Choc mini switches (PG 1232)
- Choc switches (PG 1350)
- Choc spacing (18x17mm)
- Width: 10.4 cm
- Height: 8.8 cm
- Height: 1.2 cm (from desk to top of keycap with MBK switch and 2mm rubber bumper)
Hardware status:
Working boards are yet to be printed and tested.
Firmware status:
- Support coming to upstream qmk with this PR
- Support coming to upstream zmk with this PR
- Plan to write rust firmware for it eventually tracked in this issue
Parts
145| Qty | Value | Footprint | References |
|---|---|---|---|
| 35 | 1N4148W | Diode_SMD:D_SOD-123 | D0_0, D0_1, D0_2, D0_3, D0_4, D0_5, D0_6, D0_7, D0_8, D0_9, D1_0, D1_1, D1_2, D1_3, D1_4, D1_5 +19 |
| 34 | KEYSW | switches:Choc_PG1350_Choc_Spacing | K0_0, K0_1, K0_2, K0_3, K0_4, K0_5, K0_6, K0_7, K0_8, K0_9, K1_0, K1_1, K1_2, K1_3, K1_4, K1_5 +18 |
| 14 | FM-B2020RGBA-HG | rgb:LED_RGB_FM-B2020RGBA-HG | Left_RGB_0, Left_RGB_1, Left_RGB_2, Left_RGB_3, Left_RGB_4, Left_RGB_5, Left_RGB_6, Right_RGB_0, Right_RGB_1, Right_RGB_2, Right_RGB_3, Right_RGB_4, Right_RGB_5, Right_RGB_6 |
| 7 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5, C9, C10, C12, C13, C15, C17 |
| 5 | 100kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R4, R5, R9, R12 |
| 5 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2, C7, C14, C16 |
| 4 | 4.7kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R7, R8, R10, R13 |
| 3 | VAL** | panelization:mouse-bite-2mm-slot-with-space-for-track | mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C3, C8 |
| 2 | 18kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R11, R14 |
| 2 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C6, C11 |
| 2 | 5.1kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2 |
| 2 | IS31FL3731 | Package_DFN_QFN:QFN-28-1EP_4x4mm_P0.4mm_EP2.3x2.3mm_ThermalVias | U5, U6 |
| 2 | LOGO | copper_pads:ferris_bling | G***, G*** |
| 2 | PJ-320A | kbd:TRRS-PJ-320A | Jack0, Jack1 |
| 1 | 10kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6 |
| 1 | 4.7nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C4 |
| 1 | 500 mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | B3U-1000P | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | LOGO | silkscreens:closed_eyes | G*** |
| 1 | LOGO | silkscreens:open_eyes | G*** |
| 1 | MCP1700T-3302E/TT | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | MCP23017-E/SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U2 |
| 1 | PDTC123JT,215 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | RB060M-30TR | Diode_SMD:D_SOD-123 | D2 |
| 1 | SMF9.0CA | Diode_SMD:D_SOD-123 | D1 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | STM32F072CBT6 | breakout_pins:Dual_MCU_QFP_QFN_48_with_breakout_pins | U1 |
| 1 | TYPE-C-31-M-12 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
The 135 most common of 145 parts.
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Questions
How big is the Ferris PCB?
It measures 208.8 × 396.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ferris use?
145 parts, built around the STM32F072CBT6, MCP1700T-3302E/TT(MS), MCP23017-E/SO and SRV05-4. 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 Ferris KiCad files?
From the pierrechevalier83/ferris repository on GitHub, at the commit this page was made from: the board is 0.2/bling/ferris.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ferris design in my own project?
Its repository states no licence, so its author keeps all rights: ask pierrechevalier83 before reusing the design.