Scoms tacnpr
About the Scoms tacnpr PCB
Scoms tacnpr is an open source STM32 PCB design by partio-scout, published on GitHub under the TAPR-OHL-1.0 license. It is a 4-layer board measuring 99.1 × 99.1 mm, with 279 components from 89 distinct parts.
Its main chip is the STM32L432KC, from the STM32 family. Other key parts include the TPS54331DR, XC6206PXXXMR, SI4463, SRV05-4 and 23LC1024. By type, the board carries 114 capacitors, 94 resistors, 18 ICs, 18 inductors, 17 diodes and 10 connectors.
It belongs with the rf & radio designs in this gallery.
From the project
TACNPR by Scoms -- Open hardware high-speed Ethernet/IP data radio for the 433 MHz HAM band, binary-compatible with the original NPR by F4HDK.
NPR-compatible (New Packet Radio) Ethernet-connected radio w/ integrated RF PA for the 70cm HAM band. TACNPR is binary-compatible with the original design /1/ by Guillaume F4HDK.
Designed by Lasse OH3HZB & Tatu OH2EAT & Scoms team (special thanks to Mikko OH2FLO, Vili OH5GE and Tommi OH1GJV (TACBUCK design))
Please note that you need to be licensed HAM radio operator to use this radio. Remember to check your local regulations.
Main components on the Scoms tacnpr
Scoms tacnpr bill of materials (BOM)
279 components, 89 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | TPS54331DR | SOIC-8_3.9x4.9mm_P1.27mm | U1, U2, U3 |
| 4 | XC6206PXXXMR XC6206PxxxMR | SOT-23 | U4, U12, U13, U16 |
| 1 | SI4463 Si4463 | QFN-20-1EP_4x4mm_P0.5mm_EP2.6x2.6mm_ThermalVias | U5 |
| 2 | SRV05-4 | SOT-23-6 | U6, U9 |
| 1 | 23LC1024 | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | STM32L432KC | QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U8 |
| 1 | MHW720A | MHW720A | U10 |
| 1 | CH340G | SOIC-16_3.9x9.9mm_P1.27mm | U11 |
| 1 | C470902 PSA4-5043 (SPF5043Z) | SOT-343_SC-70-4-widepad_Handsoldering | U14 |
| 1 | 74HC04 | SOIC-14_3.9x8.7mm_P1.27mm | U15 |
| 1 | B39431B3710U410 | DCC6C | U17 |
| 1 | W5500 | LQFP-48_7x7mm_P0.5mm | U18 |
| 2 | AO3401A | SOT-23 | Q2, Q4 |
| 1 | MMBT3904 | SOT-23 | Q3 |
| 1 | C9006 25 MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 32.768K | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | 12M | Crystal_SMD_SeikoEpson_TSX3225-4Pin_3.2x2.5mm | Y3 |
| 1 | 30M | Crystal_SMD_SeikoEpson_TSX3225-4Pin_3.2x2.5mm | Y4 |
| 2 | C474881 PWR_TERM | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J1, J2 |
| 1 | C5160789 GPIO_HEADER | PinHeader_1x06_P2.54mm_Vertical_SMD_Pin1Left | J3 |
Show 69 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C5160789 GPIOR_HEADER | PinHeader_1x06_P2.54mm_Vertical_SMD_Pin1Left | J4 |
| 1 | C132563 USB_B_Micro | USB_Micro-B_Amphenol_10118194_Horizontal | J5 |
| 1 | C124413 PROG_CONN | PinSocket_1x04_P2.54mm_Vertical | J6 |
| 1 | C496549 SMA_F | SMA_Amphenol_132134_Vertical | J7 |
| 1 | C88374 U.fl | U.FL_Hirose_U.FL-R-SMT-1_Vertical | J8 |
| 1 | HR911105A | HR911105a | J9 |
| 1 | Powerpole | PowerPole_PP45_1336G1_1x2_Horizontal | J10 |
| 1 | C58066 5x20 fuse 6.3A | Fuseholder5x20_H_universal | F1 |
| 3 | SS34 | D_SMA | D1, D2, D3 |
| 6 | LED | LED_0805_2012Metric | D4, D6, D9, D13, D17, D18 |
| 1 | SMCJ28A | D_SMC | D5 |
| 1 | TVS DIODE | D_SMB | D7 |
| 1 | TVS DIODE | D_SMC | D8 |
| 2 | BA591 | D_SOD-323 | D10, D14 |
| 1 | BAV99 | SOT-23 | D16 |
| 1 | C84256 TX_LED | LED_0805_2012Metric | D19 |
| 1 | 3V3_LNA | LED_0805_2012Metric | D23 |
| 3 | 10U 10u | L_Bourns_SRP7028A_7.3x6.6mm | L1, L3, L4 |
| 2 | 470N 470n | L_Bourns_SRP7028A_7.3x6.6mm | L2, L6 |
| 4 | GZ2012D101TF | L_0805_2012Metric | L5, L7, L14, L18 |
| 4 | 150N 150n | L_0603_1608Metric | L8, L10, L11, L17 |
| 2 | 15N 15n | L_0603_1608Metric | L9, L13 |
| 1 | 22N 22n | L_0603_1608Metric | L12 |
| 2 | 47N 47n | L_0603_1608Metric | L15, L16 |
| 7 | 10N 10n | C_0603_1608Metric | C1, C15, C26, C37, C64, C106, C113 |
| 27 | 100N 100n | C_0603_1608Metric | C2, C12, C16, C23, C27, C34, C38, C40 +19 |
| 20 | 22U 22u | C_1206_3216Metric | C3, C4, C5, C6, C17, C18, C19, C20 +12 |
| 11 | 10U 10u | C_1206_3216Metric | C7, C8, C10, C11, C21, C22, C32, C33 +3 |
| 2 | 220U 220u | CP_Elec_10x10.5 | C9, C62 |
| 2 | 1n | C_0805_2012Metric | C13, C24 |
| 3 | 10P 10p | C_0805_2012Metric | C14, C25, C36 |
| 1 | 2N2 2n2 | C_0805_2012Metric | C35 |
| 12 | 1u | C_0805_2012Metric | C39, C41, C66, C71, C72, C82, C83, C85 +4 |
| 2 | 10P 10p | C_1206_0805_WIDE | C45, C46 |
| 3 | 5P6 5p6 | C_1206_0805_WIDE | C47, C69, C99 |
| 2 | 4P3 4p3 | C_0603_1608Metric | C55, C56 |
| 3 | 10P 10p | C_0603_1608Metric | C63, C68, C92 |
| 2 | 6P8 6p8 | C_1206_0805_WIDE | C65, C102 |
| 2 | 22P 22p | C_1206_3216Metric | C74, C75 |
| 1 | 470N 470n | C_0805_2012Metric | C76 |
| 4 | 100P 100p | C_0603_1608Metric | C81, C91, C95, C98 |
| 2 | 18P 18p | C_0603_1608Metric | C90, C97 |
| 1 | DNP | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C93 |
| 2 | 3P3 3p3 | C_0603_1608Metric | C94, C96 |
| 1 | 8P2 8p2 | C_1206_0805_WIDE | C100 |
| 1 | 4U7 4u7 | C_0805_2012Metric | C108 |
| 2 | 6.8N 6.8n | C_0603_1608Metric | C114, C115 |
| 1 | 22N 22n | C_0603_1608Metric | C116 |
| 3 | C25804 10k 1% | R_0603_1608Metric | R1, R6, R11 |
| 4 | DNP | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R4, R7, R9 |
| 2 | 715R | R_0603_1608Metric | R3, R8 |
| 2 | 30K 30k | R_0603_1608Metric | R5, R10 |
| 1 | 330K 330k | R_0603_1608Metric | R12 |
| 1 | 2K7 2k7 | R_0603_1608Metric | R13 |
| 2 | 100K 100k | R_0603_1608Metric | R14, R44 |
| 8 | 1.5K 1.5k | R_0603_1608Metric | R15, R23, R36, R37, R38, R49, R54, R92 |
| 13 | 10K 10k | R_0603_1608Metric | R16, R33, R34, R35, R46, R47, R48, R51 +5 |
| 26 | 0 | R_0805_2012Metric | R17, R18, R19, R20, R21, R22, R24, R25 +18 |
| 7 | 330 | R_0603_1608Metric | R26, R27, R29, R45, R91, R93, R94 |
| 2 | 68 | R_0603_1608Metric | R28, R57 |
| 10 | C22775 100 1% | R_0603_1608Metric | R39, R40, R42, R68, R81, R82, R83, R84 +2 |
| 1 | 4K7 4k7 | R_0603_1608Metric | R43 |
| 1 | 22 | R_0603_1608Metric | R58 |
| 2 | 220 | R_0603_1608Metric | R60, R61 |
| 1 | 1M | R_0603_1608Metric | R69 |
| 1 | C227572 12.4k 1% | R_0603_1608Metric | R76 |
| 4 | 33 | R_0603_1608Metric | R77, R78, R79, R80 |
| 1 | C22859 10 1% | R_0603_1608Metric | R85 |
| 2 | 1k | R_0603_1608Metric | R86, R87 |
Scoms tacnpr design files
The KiCad project lives in the partio-scout/scoms-tacnpr repository on GitHub; these links point at the commit this page was built from.
- LayoutTACNPR.kicad_pcb
- SchematicTACNPR.kicad_sch
- BOMproduction_files_revE/TACNPR-BOM.csv
Scoms tacnpr: common questions
What microcontroller does the Scoms tacnpr use?
The Scoms tacnpr is built around the STM32L432KC, from the STM32 family.
How big is the Scoms tacnpr PCB?
The Scoms tacnpr measures 99.1 × 99.1 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Scoms tacnpr?
279 components, from 89 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Scoms tacnpr design files?
From the partio-scout/scoms-tacnpr repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Scoms tacnpr design in my own project?
Yes, under the terms of its TAPR-OHL-1.0 license, which partio-scout chose for the repository.
Can I test firmware for the Scoms tacnpr without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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