6 layers60.6 × 100 mm
Gecko5education
logisim-evolution/GECKO5Education
Openhardware educational platform based on the ideas of the ulx3s and Gecko4Education
311 parts18MIT
6 layers60.6 × 100 mm
Openhardware educational platform based on the ideas of the ulx3s and Gecko4Education
- Size
- 60.6 × 100 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 141
- Nets
- 239
- Pads
- 814
- Tracks, vias
- 4,349, 470
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 18 Jun 2023
- Updated
- 16 Jul 2025
Overview
CpuAddOn is an open-source printed circuit board by logisim-evolution, from the logisim-evolution/GECKO5Education repository on GitHub, published under the MIT licence. It is a 6-layer board of 60.6 × 100 mm with 141 parts on 239 nets, routed with 4,349 tracks and 470 vias.
It is built around the STM32F103CBU6, ISO1044BD and SN74HC266DR(LX), with the B0505S-1WR3, MAX9867ETJ+ and MX25R3235FM2IL0 among its other parts. Its parts include 57 capacitors, 42 resistors, 16 ICs, 6 connectors and 6 switches. It belongs with the STM32 boards of this library.
Main components
12
STM32F103CBU6
UFQFPN-48(7x7)-40℃~+85℃ 128KB 12bit 20KB 2V~3.6V 32 Bit 37 72MHz ARM Cortex-M3 Built-in FLASH UFQFPN-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
ISO1044BD
SOIC-8-40℃~+125℃ 1.71V~1.89V、2.25V~5.5V、4.5V~5.5V 5Mbps 70mA CAN FD Transceiver SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
SN74HC266DR(LX)
SOP-14Buffers, Drivers, Receivers, Transceiverslingxingic
B0505S-1WR3
SIP,11.7x6mm-40℃~+105℃ 1 1.5kV 10.2mm 11.68mm 1W 200kHz~340kHz 200mA 2400uF 30mVp-p 4.5V~5.5V 5V 6mA 6mm 86% Short Circuit Protection 塑封型 非稳压型 SIP,11.7x6mm Isolated Power Modules ROHSEVISUNIsolated Power ModulesMAX9867ETJ+
TQFN-32(5x5)-40℃~+85℃ 1.65V~1.95V、1.65V~3.6V 8kHz~48kHz Encoder/decoder Serial、I2C TQFN-32(5x5) Audio Interface ICs ROHSMaxim Integrated (Analog Devices)Audio Interface ICs
MX25R3235FM2IL0
SOP-8 200mil-40℃~+85℃ 1.65V~3.6V 100,000 cycles 20 Years 3.2ms 32Mbit 80MHz SPI SOP-8 200mil NOR FLASH ROHSMXICNOR FLASH
NCP1529ASN
TSOP-5-40℃~+85℃ 1 1.7MHz 1A 2.7V~5.5V 28uA 900mV~3.9V Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting Step-down type Yes TSOP-5 DC-DC Converters ROHSonsemiDC-DC Converters
SHT40-AD1B-R2
DFN-4-EP(1.5x1.5)Temperature And Humidity SensorSensirion
TCS34003FNM
WDFN-6(2x2.4)-40℃~+70℃ 2.7V~3.6V 235uA Color Recognition I2C Red, Green, Blue, IR WDFN-6(2x2.4) Ambient Light Sensors ROHSAdvanced Monolithic SystemsAmbient Light Sensors
USB2513B-AEZC
QFN-36(6x6)0℃~+85℃ 3 3.3V Hub I2C USB 2.0 QFN-36(6x6) USB HUB Controllers ROHSMicrochip TechnologyUSB ConvertersAS4C16M16SA-6TAN
TSOP-54-10.2mm-40℃~+105℃ 166MHz 256Mbit 3V~3.6V TSOP-54-10.2mm SDRAM ROHSAlliance MemorySDRAM
HDSM-433C
SMD-10P-40℃~+105℃ 0.39 1 14.3mcd 2V 65mW 7 Segment Common Cathode Red SMD-10P LED Segment Displays ROHSBroadcom LimitedLED Segment Displays
README
README.mdGECKO5Modular
The Gecko5Modular is a new take on an open hardware educational platform. The ideas of the Gecko5Modular are based on the open hardware ULX3S board, the Gecko4Education line of boards, and the recently developed Leguan development board.
3D preview:
This is a small (60.6x100 mm) standalone FPGA board for education, research and general purpose. It's open source and open hardware. It continues my line of educational boards used in the past for teaching and research projects.
Developer's guide
Detailed information how to use the board can be found here.
Production
The prototypes for these boards were produced and mounted by Eurocircuits.
Financement
The prototypes for these board (V1.0 and V1.1) were financed by the computer architecture lab of EPFL. Version V1.2 and the CPU-addon was financed by the HuCE-microlab of BFH.
Parts
141| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | 100n | Capacitor_SMD:C_0402_1005Metric | C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C22, C33, C34, C35, C37 +18 |
| 18 | 10k | Resistor_SMD:R_0402_1005Metric | R10, R11, R12, R13, R15, R16, R17, R18, R21, R24, R25, R26, R28, R30, R31, R32 +2 |
| 11 | 1u | Capacitor_SMD:C_0402_1005Metric | C21, C23, C24, C25, C26, C29, C30, C32, C36, C53, C54 |
| 8 | 62R | Resistor_SMD:R_0402_1005Metric | R35, R36, R37, R38, R39, R40, R41, R42 |
| 5 | B3U-1000P[] | cpuAddOn:SW_B3U-1000P_OMR | SW1, SW2, SW3, SW4, SW5 |
| 4 | C1608X5R0J106M080AB | Capacitor_SMD:C_0603_1608Metric | C1, C3, C4, C5 |
| 3 | 100k | Resistor_SMD:R_0402_1005Metric | R3, R4, R7 |
| 3 | 2u2 | Capacitor_SMD:C_0402_1005Metric | C31, C40, C41 |
| 2 | 220n | Capacitor_SMD:C_0402_1005Metric | C27, C28 |
| 2 | 330R | Resistor_SMD:R_0402_1005Metric | R20, R23 |
| 2 | 5k1 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 768R | Resistor_SMD:R_0402_1005Metric | R19, R22 |
| 2 | 9pF | Capacitor_SMD:C_0402_1005Metric | C56, C57 |
| 2 | APHBM2012SURKCGKC | cpuAddOn:LED_APHBM2012SURKCGKC | D1, D2 |
| 1 | 104031-0811 | cpuAddOn:sdcard | SD1 |
| 1 | 105450-0101 | cpuAddOn:MOLEX_105450-0101 | J2 |
| 1 | 12k | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 150k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 18p | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 1k @ 100MHz | Inductor_SMD:L_0402_1005Metric | L2 |
| 1 | 1k5 | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 2k2 | Resistor_SMD:R_0402_1005Metric | R29 |
| 1 | 3352T-1-103LF | cpuAddOn:TRIM_3352T-1-103LF | R27 |
| 1 | 47E | Resistor_SMD:R_0402_1005Metric | R34 |
| 1 | 680k | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | AP2281-3WG-7 | cpuAddOn:SOT26_DIO | U5 |
| 1 | AS4C16M16SA-6TAN | Package_SO:TSOP-II-54_22.2x10.16mm_P0.8mm | U7 |
| 1 | B0505S-1WR3 | cpuAddOn:CONV_B0505S-1WR2 | PS1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_1060_1x2032 | BT1 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Horizontal | J3 |
| 1 | Conn_02x16_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x16_P2.54mm_Horizontal | J7 |
| 1 | ECS-2520MV-080-BM-TR | Oscillator:Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X2 |
| 1 | ECS-2520MV-240-BL-TR | Oscillator:Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X1 |
| 1 | HDSM-433C | cpuAddOn:HDSM-431W | U16 |
| 1 | ICM-42605 | cpuAddOn:PQFN50P300X250X97-14N | U13 |
| 1 | ISO1044BD | cpuAddOn:SOIC127P599X175-8N | U8 |
| 1 | JS5208 | cpuAddOn:JS5208 | S1 |
| 1 | LP5907MFX-1.8 | Package_TO_SOT_SMD:SOT-23-5 | U11 |
| 1 | LPS22HBTR | cpuAddOn:PQFN50P200X200X80-10N | A1 |
| 1 | LQM2HPN2R2MJ0L | cpuAddOn:LQM2HPN2R2MJ0L | L1 |
| 1 | MAX9867ETJ+ | cpuAddOn:21-0140L_T3255-4_MXM | U10 |
| 1 | MX25R3235FM2IL0 | Package_SO:SOP-8_5.28x5.23mm_P1.27mm | U12 |
| 1 | NCP1529A | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | QTE-020-01-X-D-A | cpuAddOn:SAMTEC_QTE-020-01-X-D-A | J1 |
| 1 | RT2012-32.768-9-20-EXT-TR | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | Y1 |
| 1 | SHT40-AD1B-R2 | cpuAddOn:SHT4X | U14 |
| 1 | SJ-3551B-MSMT-TR-67 | cpuAddOn:CUI_SJ-3551B-MSMT-TR-67 | J4 |
| 1 | SN74HC266DR | cpuAddOn:D14 | U4 |
| 1 | STM32F103CBU6 | cpuAddOn:UFQFPN-48_7X7X0P55MM | U3 |
| 1 | STM32H743ZITx | Package_QFP:LQFP-144_20x20mm_P0.5mm | U6 |
| 1 | TCS34003FNM | cpuAddOn:SON65P200X240X70-6N | U15 |
| 1 | TE_2311765-1 | cpuAddOn:TE_2311765-1 | J5 |
| 1 | TS3A227ERVAR | cpuAddOn:RVA16_2P14X2P14_TEX | U9 |
| 1 | USB2513B-AEZC | cpuAddOn:QFN36_6X6MC_MCH | U1 |
The 138 most common of 141 parts.
Questions
How big is the CpuAddOn PCB?
It measures 60.6 × 100 mm and has 6 copper layers, 1.6 mm thick.
What parts does the CpuAddOn use?
141 parts, built around the STM32F103CBU6, ISO1044BD, SN74HC266DR(LX) and B0505S-1WR3. 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 CpuAddOn KiCad files?
From the logisim-evolution/GECKO5Education repository on GitHub, at the commit this page was made from: the board is kicad/cpuAddOn/cpuAddOn.kicad_pcb and its schematic kicad/GECKO5Education/gecko5education.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CpuAddOn design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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