2 layers13.3 × 13.5 mm
2 layers35 × 20 mm
Eclectronicsmp1
Pranav-Bonthu/Eclectronics-MiniProject1Op-amp relaxation oscillator LED blinker — LTspice design with 200-run Monte Carlo tolerance analysis, and a 35x20 mm two-layer KiCad PCB
- Size
- 35 × 20 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 12
- Pads
- 43
- Tracks, vias
- 74, 6
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Sep 2026
- Updated
- 18 Sep 2026
Overview
Eclectronicsmp1 is an open-source printed circuit board by Pranav-Bonthu, from the Pranav-Bonthu/Eclectronics-MiniProject1 repository on GitHub. It is a 2-layer board of 35 × 20 mm with 15 parts on 12 nets, routed with 74 tracks and 6 vias.
It is built around the MCP6021T-E/OT-MS, RC0603FR-07100KL and LTST-C171KRKT. Its parts include 7 resistors, 3 capacitors, 3 ICs, 1 diode and 1 connector.
Main components
3
MCP6021T-E/OT-MS
SOT-23-5-2.75V~-1.1V、1.1V~2.75V -40℃~+85℃ 1 10V/us 11MHz 2.2V~5.5V 20mA 300uA 30pA 400pA 600nV/℃ 60nV/√Hz@1kHz 800uV 95dB Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5 Operational Amplifier ROHSMSKSEMIOperational Amplifier
RC0603FR-07100KL
UncategorisedUnknown maker
LTST-C171KRKT
0805-55℃~+85℃ 130° 20mA 2V 54mcd 631nm 639nm 75mW Discrete Diode Red Water Clear 0805 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
README
README.mdEclectronics Mini-Project 1
Final right up can be found here: 'docs/Electronics-Mini-Project-1.pdf'
Simulation
200-run Monte Carlo over 1 % resistor and 5 % capacitor tolerances:
Schematic
The board
| Top | Bottom |
|---|---|
 |  |
| Front (F.Cu ) | Back (B.Cu) |
|---|---|
 |  |
Repository layout
kicad/ KiCad 10 project: schematic, board, and the
symbol/footprint libraries it depends on
ltspice/ Simulation and results
fabrication/ Gerbers
docs/ Project write-up and schematic PDF
images/ Images for the README Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | RC0603FR-07100KL | RC0603FR_0760K4L:RC0603N_YAG | R1, R2, R3, R4 |
| 3 | C0603C105K3RACTU | C0603C105K3RACTU:CAPC17595_95N_KEM | C1, C2, C3 |
| 2 | MCP6021T-E/OT | MCP6021T_E_OT:SOT-23-5_MC_MCH | U2, U3 |
| 1 | 480370001 | 480370001:CONN_480370001_MOL | J1 |
| 1 | LTST-C171KRKT | LTST_C171KRKT:LED_LTST-C171_LTO | LED1 |
| 1 | MCP1702T-3302E/CB | MCP1702T_3302E_CB:SOT-23A_MC_MCH | U1 |
| 1 | RC0603FR-07301KL | RC0603FR_0760K4L:RC0603N_YAG | R6 |
| 1 | RC0603FR-07301RL | RC0603FR_0760K4L:RC0603N_YAG | R5 |
| 1 | RC0603FR-0760K4L | RC0603FR_0760K4L:RC0603N_YAG | R7 |
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Questions
How big is the Eclectronicsmp1 PCB?
It measures 35 × 20 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Eclectronicsmp1 use?
15 parts, built around the MCP6021T-E/OT-MS, RC0603FR-07100KL and LTST-C171KRKT. 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 Eclectronicsmp1 KiCad files?
From the Pranav-Bonthu/Eclectronics-MiniProject1 repository on GitHub, at the commit this page was made from: the board is kicad/eclectronicsmp1.kicad_pcb and its schematic kicad/eclectronicsmp1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Eclectronicsmp1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Pranav-Bonthu before reusing the design.