4 layers100 × 83 mm
Module17-Mainboard
M17-Project/Module_17
M17 modem board for 9600-baud capable radios
209 parts129CERN-OHL-W-2.0
4 layers20 × 30 mm
Micro17
M17-Project/Micro1720M17 baseband processor board - OpenRTX on a Module
- Size
- 20 × 30 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 93
- Nets
- 112
- Pads
- 340
- Tracks, vias
- 526, 113
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Dec 2023
- Updated
- 3 Feb 2026
Overview
Micro17 is an open-source printed circuit board by M17-Project, from the M17-Project/Micro17 repository on GitHub. It is a 4-layer board of 20 × 30 mm with 93 parts on 112 nets, routed with 526 tracks and 113 vias.
It is built around the STM32G473CEU6, MCP6002T-E/MC and CPC1117N, with the MCP4451-503E/ST, XC6220B331MR and 0402B104K250NT among its other parts. Its parts include 35 capacitors, 29 resistors, 7 ICs, 3 connectors and 1 diode. It belongs with the STM32 boards of this library.
Main components
12
STM32G473CEU6
UFQFPN-48(7x7)-40℃~+85℃ 1.71V~3.6V 128KB 12bit 12bit 170MHz 32 Bit 42 512KB ARM Cortex-M4 Built-in FLASH UFQFPN-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
MCP6002T-E/MC
DFN-8-EP(2x3)-40℃~+125℃ 1.8V~6V 100uA 1MHz 1pA 1pA 2 23mA 28nV/√Hz@1kHz 2uV/℃ 4.5mV 600V/ms 76dB Rail-to-Rail Input, Rail-to-Rail Output DFN-8-EP(2x3) Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
CPC1117N
SOP-4SOP-4 Solid State Relays (MOS Output) ROHSLittelfuseSolid State Relays (MOS Output)
MCP4451-503E/ST
TSSOP-20-40℃~+125℃ 2.7V~5.5V 200kHz 257 4 50kΩ 50ppm/℃ 75Ω I2C Linear Power-on reset ±20% TSSOP-20 Digital Potentiometers ROHSMicrochip TechnologyDigital Potentiometers
XC6220B331MR
SOT-23-5-40℃~+85℃@(Ta) 1 25uA 3.3V 400mV@(800mA) 5.5V 50dB@(10kHz) 900mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
0402B104K250NT
0402100nF 25V X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSGuangdong Fenghua Advanced Tech (FH)Multilayer Ceramic Capacitors MLCC - SMD/SMTCC0402KRX7R9BB103
040210nF 50V X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
FRC0402F2202TS
0402-55℃~+155℃ 22kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSFOJANChip Resistor - Surface Mount0402WGF3301
0402-55℃~+155℃ 3.3kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface Mount
T491A226K006AT
CASE-A-3216-18(mm)-55℃~+125℃ 22uF 3Ω@100kHz 6.3V ±10% CASE-A-3216-18(mm) Tantalum Capacitors ROHSKEMETTantalum CapacitorsRTT021002FTH
0402-55℃~+155℃ 10kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSRALECChip Resistor - Surface Mount0402B224K160NT
040216V 220nF X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSGuangdong Fenghua Advanced Tech (FH)Multilayer Ceramic Capacitors MLCC - SMD/SMT
README
icom_ICF3_4_5_6XXX/README.mdMicro17 - IC-F3/4/5/6X6X
Variant of Micro17 for ICOM IC-F commercial radios. Compatible model list is available here.
Flashing OpenRTX
WIP - ST-Link needed
Installing Micro17 inside the radio
A Youtube video guide is planned soon:tm:.
Mobiles
Getting inside mobile IC-F5X6X/6X6X is quite straightforward: four screws will allow you to pop the bottom cover off. You'll need to cut/solder the following bridges:
- Cut "K", "A", "B" and "C"
- Solder/bridge "L"
You can then install Micro17 in the J1 slot.
Handsets
Opening a handset is a bit trickier. You'll need to remove the two knobs, unscrew the antenna nut (either using thin needle-nose pliers or the appropriate tool. Be careful as it might be glued, some light blasting with a heat gun might be needed) and the two bottom screws behind the battery. The following bridges will have to be changed:
- Cut "CP2", "MIC", "AFOUT" and "PTT"
- Solder/bridge "CP3" You can then install Micro17 in the J1 slot.
Configuring Micro17
As this module is embedded inside the radio, configuration is pulled from the radio's "codeplug". This is still heavily WIP, but it's planned to use the internal command protocol one the details get figured out.
Wiring details
This variant is based on the experiments documented here. The internal J1 connector breaks out all necessary pins.
| Module17 equivalent Pins | J1 connector |
|---|---|
| GND (DB9 - pin 8) | Pin 2, 17 or 39 - GND |
| +12V/+8V (DB9 - pin 9) | Pin 37 - VCC |
| RX (DB9 - pin 6) | Pin 31 - DISC |
| TX (DB9 - pin 2) | Pin 13 - SIGO |
| PTT_OUT (DB9 - pin 5) | Pin 4 - PTTO (Add a 1K pullup to 5V - pin 38!) |
| AF_OUT (pot middle pin) | Pin 30 - AFOUT |
| MIC_IN (jack's middle pin) | Pin 7 - MCIN |
| PTT_IN (jack's last pin) | Pin 3 - PTTIN (Through a resistive divider: two 2.7k resistors in series between pins 2 and 3, wire to Module17 in the middle) |
Parts
93| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | GP | TestPoint:TestPoint_Pad_D1.0mm | TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14 |
| 11 | 100n | Capacitor_SMD:C_0402_1005Metric | C4, C5, C6, C7, C8, C11, C13, C25, C30, C33, C35 |
| 8 | 10n | Capacitor_SMD:C_0402_1005Metric | C14, C15, C16, C19, C20, C24, C29, C31 |
| 6 | 22k | Resistor_SMD:R_0402_1005Metric | R17, R20, R21, R26, R27, R28 |
| 5 | 3k3 | Resistor_SMD:R_0402_1005Metric | R14, R18, R19, R22, R25 |
| 4 | 22u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C26, C27, C28, C34 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R4, R16 |
| 3 | 220n | Capacitor_SMD:C_0402_1005Metric | C12, C22, C23 |
| 3 | MCP6002 | Package_DFN_QFN:DFN-8-1EP_3x2mm_P0.5mm_EP1.75x1.45mm | U4, U6, U7 |
| 2 | 12k | Resistor_SMD:R_0402_1005Metric | R2, R29 |
| 2 | 13k | Resistor_SMD:R_0402_1005Metric | R8, R9 |
| 2 | 1n5 | Capacitor_SMD:C_0402_1005Metric | C17, C18 |
| 2 | 2p2 | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | 39k | Resistor_SMD:R_0402_1005Metric | R13, R23 |
| 2 | 4k3 | Resistor_SMD:R_0402_1005Metric | R6, R7 |
| 2 | 680p | Capacitor_SMD:C_0402_1005Metric | C21, C32 |
| 2 | 7k5 | Resistor_SMD:R_0402_1005Metric | R10, R11 |
| 1 | 10R | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 1N4148WS | Diode_SMD:D_SOD-323 | D1 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 22u/25V | Capacitor_SMD:C_0805_2012Metric | C10 |
| 1 | 2k2 | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 2u2 | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 36k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 3k9 | Resistor_SMD:R_0603_1608Metric | R24 |
| 1 | 3k9 | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 8 MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AXK640347YG | micro17:AXK640347YG | J2 |
| 1 | CPC1117N | Package_SO:SOP-4_3.8x4.1mm_P2.54mm | U3 |
| 1 | Conn_01x05 | Connector_Harwin:Harwin_M20-89005xx_1x05_P2.54mm_Horizontal | J1 |
| 1 | FerriteBead_Small | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 1 | Logo_Open_Hardware_Small | Symbol:OSHW-Logo_5.7x6mm_SilkScreen | SYM2 |
| 1 | MCP4451-503-ST | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U5 |
| 1 | STM32G473CCUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U1 |
| 1 | SYM_ESD_Small | Symbol:ESD-Logo_6.6x6mm_SilkScreen | SYM1 |
| 1 | TP_RX | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | TP_TX | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Molex_47346-0001 | J4 |
| 1 | XC6220B331MR | Package_TO_SOT_SMD:SOT-23-5 | U2 |
Questions
How big is the Micro17 PCB?
It measures 20 × 30 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Micro17 use?
93 parts, built around the STM32G473CEU6, MCP6002T-E/MC, CPC1117N and MCP4451-503E/ST. 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 Micro17 KiCad files?
From the M17-Project/Micro17 repository on GitHub, at the commit this page was made from: the board is icom_ICF3_4_5_6XXX/micro17.kicad_pcb and its schematic generic/fltrs.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Micro17 design in my own project?
Its repository states no licence, so its author keeps all rights: ask M17-Project before reusing the design.
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