4 layers55 × 85 mm
4 layers55 × 85 mm
Alchemy
SteveLRojas/Alchemy1Reusable microcontroller module with USB
- Size
- 55 × 85 mm
- Copper layers
- 4
- Thickness
- 4.69 mm
- Parts
- 66
- Nets
- 78
- Pads
- 297
- Tracks, vias
- 549, 69
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 29 Dec 2023
- Updated
- 31 Oct 2026
Overview
Alchemy is an open-source printed circuit board by SteveLRojas, from the SteveLRojas/Alchemy repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 55 × 85 mm with 66 parts on 78 nets, routed with 549 tracks and 69 vias.
It is built around the CH32V203C8T6, CH340G and LM5164DDA, with the MT9700 and AMS1117-3.3 among its other parts. Its parts include 27 capacitors, 16 resistors, 7 ICs, 5 connectors and 2 crystals. It belongs with the RISC-V boards of this library.
Main components
5
CH32V203C8T6
LQFP-48(7x7)144MHz 64KB FLASH Others LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSWCH (Nanjing Qinheng Microelectronics)Microcontrollers (MCU/MPU/SOC)
CH340G
SOP-16-40℃~+85℃ 2Mbps 3.3V、5V USB 2.0 USB to UART SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
LM5164DDA
SOIC8100-V Input, 1-A Synchronous Buck DC/DC Converter with Ultra-low IQTexas InstrumentsUncategorised
MT9700
SOT-23-5-40℃~+85℃ 1 2.4V~5.5V 2A 80mΩ Active High High Side Switch Short-Circuit Protection(SCP)、Overcurrent Protection(OCP)、Over Temperature Protection SOT-23-5 Power Distribution Switches ROHS西安航天民芯Power Distribution Switches
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdAlchemy
Reusable microcontroller module with USB
Parts
66| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 0.1u | Capacitor_SMD:C_0805_2012Metric | C9, C12, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27 |
| 4 | 20p | Capacitor_SMD:C_0805_2012Metric | C10, C11, C13, C14 |
| 4 | 22u | Capacitor_SMD:C_1206_3216Metric | C5, C6, C7, C8 |
| 4 | 5K1 | Resistor_SMD:R_0805_2012Metric | R7, R8, R9, R10 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 3 | 100k | Resistor_SMD:R_0805_2012Metric | R1, R3, R6 |
| 3 | 2.2n | Capacitor_SMD:C_0805_2012Metric | C2, C3, C4 |
| 3 | 4.7k | Resistor_SMD:R_0805_2012Metric | R14, R15, R16 |
| 3 | MT9700 | Package_TO_SOT_SMD:SOT-23-5 | U5, U6, U7 |
| 2 | 10u | Capacitor_SMD:C_1206_3216Metric | C15, C16 |
| 2 | 4.7K | Resistor_SMD:R_0805_2012Metric | R11, R13 |
| 2 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4, J5 |
| 2 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J2, J3 |
| 1 | 100u | Inductor_SMD:L_10.4x10.4_H4.8 | L1 |
| 1 | 12Mz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C17 |
| 1 | 2.2u | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | 22k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 330k | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 470 | Resistor_SMD:R_0805_2012Metric | R12 |
| 1 | 560k | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 8MHz | Crystal:Crystal_HC49-4H_Vertical | Y2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | CH32V203C8T6 | CH32V203:CH32V203C8T6_LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | CH340G | Package_SO:SOP-16_3.9x9.9mm_P1.27mm | U3 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Horizontal | J1 |
| 1 | LL3301NF065QG | SamacSys_Parts:LL3301NF065QG | S1 |
| 1 | LM5164DDA | Package_SO:HSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.1mm_ThermalVias | U2 |
| 1 | ORANGE | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | SWCLK | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1 |
| 1 | SWDIO | TestPoint:TestPoint_Pad_1.5x1.5mm | TP2 |
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Questions
How big is the Alchemy PCB?
It measures 55 × 85 mm and has 4 copper layers, 4.69 mm thick.
What parts does the Alchemy use?
66 parts, built around the CH32V203C8T6, CH340G, LM5164DDA and MT9700. 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 Alchemy KiCad files?
From the SteveLRojas/Alchemy repository on GitHub, at the commit this page was made from: the board is V1.0/Alchemy.kicad_pcb and its schematic Alchemy_to_Landungsbruecke/V1.0/Alchemy_to_Landungsbruecke.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Alchemy design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).