4 layers100 × 72 mm
Four layer v2
Kayzerjali/UQ_Magnetometer_Data_Logger
Code for the data logging system of the UQ Magnetometer
62 partsMIT
2 layers57.2 × 26.2 mm
Stc89pcb
elight2/stc89pcb- Size
- 57.2 × 26.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 64
- Pads
- 162
- Tracks, vias
- 442, 98
- Pours
- 224
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Mar 2026
- Updated
- 4 Mar 2026
Overview
Stc89pcb is an open-source printed circuit board by elight2, from the elight2/stc89pcb repository on GitHub. It is a 2-layer board of 57.2 × 26.2 mm with 20 parts on 64 nets, routed with 442 tracks and 98 vias.
It is built around the CH340C, CL21B104KBCNNNC and CL21A106KBYQNNE, with the FRC1206F1002TS, GL0805UR01 and TA-3531S-A2 among its other parts. Its parts include 7 capacitors, 4 resistors, 3 connectors, 2 ICs and 2 switches. It belongs with the 8051 (CH55x, STC, AT89) boards of this library.
Main components
8
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
CL21B104KBCNNNC
0805100nF 50V X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMTCL21A106KBYQNNE
080510uF 50V X5R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
FRC1206F1002TS
1206-55℃~+155℃ 10kΩ 200V 250mW Thick Film Resistor ±1% ±100ppm/℃ 1206 Chip Resistor - Surface Mount ROHSFOJANChip Resistor - Surface Mount
GL0805UR01
0805-40℃~+85℃ 1.8V~2.1V 120° 20mA 2mm x 1.25mm square LED 620nm~625nm 80mcd~100mcd Discrete Diode Red Top-mount Water Clear 0805 LED Indication - Discrete ROHSGui guang lightLED Indication - Discrete
TA-3531S-A2
SMD-6P,9.1x3.5mm3.5mm 9.1mm Black DPDT Gull Wing Rectangular Columnar Surface Mount, Right Angle SMD-6P,9.1x3.5mm Slide Switches ROHSYuandiSlide Switches
TS-1088-AR02016
SMD,4x3mm-30℃~+80℃ 1.6N 100,000 cycles 12V 2mm 3.9mm 3mm 50mA Black Round Button SMD(SMT) Tab SPST Surface Mount,Vertical Without Bracket SMD,4x3mm Tactile Switches ROHSXUNPUTactile Switches
X322512MSB4SI
SMD3225-4P-40℃~+85℃ 12MHz 20pF 80Ω Crystal Oscillator ±10ppm ±20ppm SMD3225-4P Crystals ROHSYXCCrystals
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1206W4F5101T5E | lcsc:R1206 | R1, R2, R4 |
| 3 | CL21B104KBCNNNC | lcsc:C0805 | C2, C6, C7 |
| 2 | 0805CG470J500NT_C24659 | lcsc:C0805 | C3, C4 |
| 2 | CL21A106KBYQNNE | lcsc:C0805 | C1, C5 |
| 2 | Conn_01x22_Pin | Connector_PinHeader_2.54mm:PinHeader_1x22_P2.54mm_Vertical | J2, J3 |
| 1 | CH340C | lcsc:SOP-16_L10.0-W3.9-P1.27-LS6.0-BL | U2 |
| 1 | FRC1206F1002TS | lcsc:R1206 | R3 |
| 1 | GL0805UR01 | lcsc:LED0805-R-RD_RED | LED1 |
| 1 | STC89C52RC-40I_C8707 | lcsc:LQFP-44_L10.0-W10.0-P0.80-LS12.0-BL | U1 |
| 1 | TA-3531S-A2 | lcsc:SW-SMD_6P-L9.1-W3.5-P2.50 | SW2 |
| 1 | TS-1088-AR02016 | lcsc:SW-SMD_L3.9-W3.0-P4.45 | SW1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | X322512MSB4SI | lcsc:CRYSTAL-SMD_4P-L3.2-W2.5-BL | X1 |
Questions
How big is the Stc89pcb PCB?
It measures 57.2 × 26.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Stc89pcb use?
20 parts, built around the CH340C, CL21B104KBCNNNC, CL21A106KBYQNNE and FRC1206F1002TS. 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 Stc89pcb KiCad files?
From the elight2/stc89pcb repository on GitHub, at the commit this page was made from: the board is stc89pcb.kicad_pcb and its schematic stc89pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Stc89pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask elight2 before reusing the design.
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