Loran c proc board
About the Loran c proc board
Loran c proc board is an open source STM32 PCB design by romavis, published on GitHub under the CC-BY-SA-4.0 license. It is a 4-layer board measuring 170 × 100 mm, with 243 components from 82 distinct parts.
Its main chip is the STM32F407VG, from the STM32 family. Other key parts include the PC817, LD1117S33, 74AC14, LAN8720 and ST3232. By type, the board carries 90 capacitors, 80 resistors, 18 connectors, 15 diodes, 13 ICs and 8 inductors.
From the project
LORAN C (USSR "Chayka") receiver project
LORAN C (USSR "Chayka") receiver project ----
Receiver should also be able to lock onto signal of USSR "Chayka" system, similar to Loran-C, due to my location (nearest transmitter chain is "Chayka" GRI 8000)
Main components on the Loran c proc board
Loran c proc board bill of materials (BOM)
243 components, 82 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | PC817 | dil_4-300 | IC501, IC502 |
| 1 | LD1117S33 | TO-220_Neutral123_Vertical | U101 |
| 3 | 74AC14 | so-14 | U102, U401, U402 |
| 1 | LAN8720 | qfn-24 | U201 |
| 3 | ST3232 | so-16 | U301, U302, U303 |
| 1 | TL072 | so-8 | U601 |
| 1 | LD1117S33 | SOT223 | U602 |
| 1 | STM32F407VG | TQFP-100 | U701 |
| 4 | BC847 | SOT23 | Q501, Q502, Q503, Q504 |
| 1 | BD135 | SOT126_SOT32_Housing_Vertical_BigPads | Q601 |
| 1 | BD136 | SOT126_SOT32_Housing_Vertical_BigPads | Q602 |
| 1 | 25MHz | crystal_hc-49u | X201 |
| 1 | 32.768KHz | crystal_tc-38_horiz | X701 |
| 1 | RJ45 | RJ45_8 | J201 |
| 1 | Power | minifit-8 | P101 |
| 1 | Cortex SWD | vasch_strip_5x2 | P102 |
| 1 | Clock board | vasch_strip_5x2 | P103 |
| 1 | UART1 3V3 | Pin_Header_Straight_1x06 | P301 |
| 1 | DB9 Ribbon 2 | vasch_strip_5x2 | P302 |
| 1 | DB9 Ribbon 1 | vasch_strip_5x2 | P303 |
Show 62 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | UART_SEL | Pin_Header_Straight_1x02 | P304 |
| 1 | SPI Bus A | vasch_strip_7x2 | P401 |
| 1 | SPI Bus B | vasch_strip_7x2 | P402 |
| 1 | RELAY A | kk100_22-23-2021 | P501 |
| 1 | RELAY B | kk100_22-23-2021 | P502 |
| 1 | RELAY C | kk100_22-23-2021 | P503 |
| 1 | RELAY D | kk100_22-23-2021 | P504 |
| 1 | DAC VCO | kk100_22-23-2021 | P601 |
| 1 | DAC AGC | kk100_22-23-2021 | P602 |
| 1 | QUAD In | kk100_22-23-2041 | P603 |
| 1 | LORAN In | kk100_22-23-2021 | P604 |
| 1 | Li CR2032 | bh840 | BT101 |
| 1 | BOOT_SEL | Pin_Header_Straight_1x02 | JP701 |
| 1 | RESET | Pin_Header_Straight_1x02 | JP702 |
| 1 | CC | Symbol_CreativeCommons_CopperTop_Type2_Small | LIC1 |
| 1 | BY | Symbol_CC-Attribution_CopperTop_Small | LIC2 |
| 1 | SA | Symbol_CC-ShareAlike_CopperTop_Small | LIC3 |
| 4 | HOLE | Hole_3-5mm | MH101, MH102, MH103, MH104 |
| 1 | TS8121 | TS8121 | TR201 |
| 2 | SMLVT3V3 | do214aa | D101, D603 |
| 10 | BAS85 | sod80c | D102, D501, D502, D606, D607, D608, D609, D610 +2 |
| 1 | LED_ETH | LED-306 | D201 |
| 2 | 8.2V 1W | diode_do41 | D601, D602 |
| 6 | Bead | RC07 | FB101, FB201, FB301, FB401, FB601, FB602 |
| 1 | Bead | rc07_vert | FB102 |
| 1 | Bead | SM1812E | FB103 |
| 3 | 470u 16V LowE | CP_10x12.5mm | C101, C613, C614 |
| 39 | 100n | c_1206 | C102, C106, C108, C109, C110, C204, C208, C217 +31 |
| 7 | 10u 6.3V Ta | c_tant_B | C103, C107, C207, C404, C501, C704, C705 |
| 2 | 470u 6.3V | CP_6.3x11mm | C104, C617 |
| 7 | 100n | c_0805 | C111, C706, C707, C708, C709, C710, C716 |
| 2 | 22p | r_0805 | C201, C203 |
| 5 | 2.2u 6.3V Ta | c_tant_A | C202, C206, C316, C317, C318 |
| 1 | 470p | r_0805 | C205 |
| 3 | 10n | c_1206 | C209, C210, C701 |
| 5 | 22n | c_1206 | C211, C213, C214, C215, C216 |
| 1 | 1n 2000V | cnp_6mm_disc | C212 |
| 2 | 1n | c_1206 | C601, C602 |
| 2 | 100u 25V | CP_6.3x11mm | C605, C606 |
| 2 | 2.2u | c_1206 | C607, C608 |
| 2 | 10u 16V Ta | c_tant_B | C611, C612 |
| 2 | 1.5u MKT | cnp_7x6mm | C618, C619 |
| 1 | 1u MKT | cnp_7x6mm | C622 |
| 2 | 2.2u 10V CER | c_1206 | C712, C713 |
| 2 | 15p | c_1206 | C714, C715 |
| 1 | 100k | r_1206 | R101 |
| 8 | 33 | r_1206 | R102, R108, R201, R202, R408, R716, R717, R718 |
| 6 | 10 | r_1206 | R103, R402, R403, R404, R405, R406 |
| 8 | 200 | r_1206 | R104, R105, R106, R107, R401, R407, R509, R510 |
| 9 | 33 | r_0805 | R203, R204, R205, R605, R606, R706, R707, R708 +1 |
| 8 | 10k | r_1206 | R206, R209, R502, R504, R505, R506, R514, R515 |
| 1 | 12.1k 1% | r_1206 | R207 |
| 4 | 49.9E 1% | r_1206 | R208, R210, R212, R213 |
| 2 | 240 | r_1206 | R211, R214 |
| 4 | 75E 1% | r_1206 | R215, R216, R217, R218 |
| 2 | 4.7k | r_1206 | R501, R503 |
| 1 | 100 | r_1206 | R507 |
| 20 | 3.3k | r_1206 | R508, R511, R512, R513, R601, R602, R607, R608 +12 |
| 2 | 330 0.5W | RC05 | R603, R604 |
| 2 | 3.3k | r_0805 | R703, R704 |
| 1 | 100 | r_0805 | R713 |
| 1 | 1.5k | r_1206 | R720 |
Loran c proc board design files
The KiCad project lives in the romavis/LoranC repository on GitHub; these links point at the commit this page was built from.
Loran c proc board: common questions
What microcontroller does the Loran c proc board use?
The Loran c proc board is built around the STM32F407VG, from the STM32 family.
How big is the Loran c proc board?
The Loran c proc board measures 170 × 100 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Loran c proc board?
243 components, from 82 distinct parts. The full bill of materials is listed on this page.
Where can I download the Loran c proc board design files?
From the romavis/LoranC repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Loran c proc board design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which romavis chose for the repository.
Can I test firmware for the Loran c proc board 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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