pklopping/Microscope-Light-RingA LED light ring for a Baush + Lomb Stereo View 7 microscope made with KiCAD
Microscope Light Ring is an open-source printed circuit board by pklopping, from the pklopping/Microscope-Light-Ring repository on GitHub. It is a 2-layer board of 80 × 60 mm with 68 parts on 46 nets, routed with 379 tracks and 47 vias.
It is built around the IRF540N, NE555 and A11203RNCQ. Its parts include 34 diodes, 19 resistors, 3 capacitors, 2 ICs and 1 connector.
This light ring is designed for use on a Bausch + Lomb Stereo View 7 microscope. It's mounted with a modified version of the part found here: http://transistor-man.com/bausch_lomb_microscope_light.html
The 555 timer configuration was found here:
The mosfet configuration was found here: https://diyodemag.com/education/fundamentals_versatile_555_timer_pwm_control
As of right now, it's still in its prototyping phase and you probably shouldn't make one.
Schematic and PCB design: Paul Klopping https://github.com/pklopping EE santiy checking: Tony K https://github.com/elwoodblues
| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 133 | Resistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 16 | D | Diode_SMD:D_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1, D3, D5, D7, D9, D11, D13, D15, D17, D19, D21, D23, D25, D27, D29, D31 |
| 16 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D2, D4, D6, D8, D10, D12, D14, D16, D18, D20, D22, D24, D26, D28, D30, D32 |
| 2 | 0.1µF | Capacitor_SMD:C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C1, C2 |
| 2 | 1N4148 | Diode_SMD:D_SOD-123 | D33, D34 |
| 1 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R18 |
| 1 | 10K | Microscope-Light-Ring:RK09D1130C2P ALPS Potentiometer | RV1 |
| 1 | 120 | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R19 |
| 1 | 1K | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R17 |
| 1 | 47µF | Capacitor_SMD:C_1210_3225Metric_Pad1.42x2.65mm_HandSolder | C3 |
| 1 | A11203RNCQ | Microscope-Light-Ring:A11203RSCQ-12ps-1p-sw | SW1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | IRF540N | Package_TO_SOT_SMD:TO-263-2 | U2 |
| 1 | NE555 | Package_SO:SO-8_5.3x6.2mm_P1.27mm | U1 |
The 61 most common of 68 parts.
It measures 80 × 60 mm and has 2 copper layers, 1.6 mm thick.
68 parts, built around the IRF540N, NE555 and A11203RNCQ. 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.
From the pklopping/Microscope-Light-Ring repository on GitHub, at the commit this page was made from: the board is Microscope-Light-Ring/Microscope-Light-Ring.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask pklopping before reusing the design.
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