2 layers50 × 20 mm
4 layers
RasterGenerator
LukasReil/SEM_DevThis project describes a fully open-source electron microscope.
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 135
- Pads
- 195
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Feb 2026
- Updated
- 3 Mar 2026
Overview
RasterGenerator is an open-source printed circuit board by LukasReil, from the LukasReil/SEM_Dev repository on GitHub. It is a 4-layer board with 15 parts on 135 nets.
It is built around the TPS62933FDRL, AD8566ARMZ-REEL and AZ1117CH-3.3TRG1, with the DG9424EDQ-T1-GE3 and LDL212PU50R among its other parts. Its parts include 11 ICs, 2 inductors and 1 connector. It belongs with the STM32 boards of this library.
Main components
5
TPS62933FDRL
SOT-583-40℃~+150℃@(TJ) 1 125uA 2.2MHz 3.8V~30V 3A 800mV~22V Adjustable Buck Buck Built-in Yes SOT-583 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
AD8566ARMZ-REEL
MSOP-8-40℃~+85℃ 10mV 2 26nV/√Hz@1kHz 35mA 4.5V~16V 54dB 5MHz 600uV/℃ 6V/us 700uA 800nA 80nA Overvoltage protection Rail-to-Rail Input, Rail-to-Rail Output MSOP-8 Operational Amplifier ROHSAnalog DevicesOperational Amplifier
AZ1117CH-3.3TRG1
SOT-223-20℃~+125℃@(Tj) 0.003%Vout 1 1.2V@(800mA) 1.35A 10V 3.3V 4mA 70dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
DG9424EDQ-T1-GE3
TSSOP-16-40℃~+85℃ -8V~-3V、3V~16V、3V~8V 1:1 44ns 4Ω 78ns 89pF TSSOP-16 Analog Switches, Multiplexers ROHSVishay IntertechnologyAnalog Switches, Multiplexers
LDL212PU50R
DFN-6-EP(3x3)-40℃~+125℃@(Tj) 1 1.2A 18V 250uA 350mV@(1.2A) 5V 60uVrms 87dB@(120Hz) Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Enable DFN-6-EP(3x3) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdScanning Electron Microscope
This project describes a fully open-source electron microscope.
Project Structure
The respository is divided into a few folders:
3dcontains CAD models of the microscopepcbcontains schematics and layouts for all relevant PCBs.swcontains the source code to required software. This includes FPGA/SoC designs, microcontroller code and desktop software.doccontains general documentation and instructions on how to build the microscope.knowledgeBasemay serve as a base for understanding how SEMs work. I can't guarantee completeness, but I will try to keep it up to date.
Status
Currently very little progress has been made, as I am learning a lot at the moment before getting any deeper into the actual development. The only thing that is actively being developed is a raster generator.
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | BD70HC0VEFJ-ME2 | CustomKiCadLib:SOIC127P600X100-9N | IC1, IC2 |
| 2 | TPS62933F | Package_TO_SOT_SMD:SOT-583-8 | U1, U2 |
| 1 | 207479-0002 | CustomKiCadLib:2074790002 | J1 |
| 1 | 5.6uH | CustomKiCadLib:INDPM128128X800N | L2 |
| 1 | 6.8uH | CustomKiCadLib:ASPIAIGF60606R8MT | L1 |
| 1 | AD8566ARMZ-REEL | CustomKiCadLib:SOP65P490X110-8N | IC5 |
| 1 | AZ1117CH-3.3TRG1 | CustomKiCadLib:SOT230P700X180-4N | IC8 |
| 1 | DG9424EDQ-T1-GE3 | CustomKiCadLib:SOP65P640X120-16N | IC7 |
| 1 | LDL212PU50R | CustomKiCadLib:SON95P300X300X100-7N-D | PS1 |
| 1 | REF3450TIDBVR | CustomKiCadLib:SOT95P280X145-6N | IC3 |
| 1 | STM32F401VBTx | Package_QFP:LQFP-100_14x14mm_P0.5mm | U3 |
| 1 | TLV2186IDR | CustomKiCadLib:SOIC127P600X175-8N | IC4 |
| 1 | TS12A4514DBVR | CustomKiCadLib:SOT95P280X145-5N | IC6 |
Questions
What parts does the RasterGenerator use?
15 parts, built around the TPS62933FDRL, AD8566ARMZ-REEL, AZ1117CH-3.3TRG1 and DG9424EDQ-T1-GE3. 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 RasterGenerator KiCad files?
From the LukasReil/SEM_Dev repository on GitHub, at the commit this page was made from: the board is pcb/RasterGenerator/RasterGenerator.kicad_pcb and its schematic pcb/RasterGenerator/RasterGenerator.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RasterGenerator design in my own project?
Its repository states no licence, so its author keeps all rights: ask LukasReil before reusing the design.
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