Dodekaedri
About the Dodekaedri PCB
Dodekaedri is an open source STM32 PCB design by e-xla, published on GitHub. It is a 4-layer board measuring 76.2 × 76.2 mm, with 225 components from 78 distinct parts.
Its main chip is the STM32F401, from the STM32 family. Other key parts include the MIC5365, SI5351A, NCP3170-D, 74LVC1G3157 and TL972IDR. By type, the board carries 76 resistors, 68 capacitors, 26 diodes, 18 inductors, 12 ICs and 11 connectors.
It belongs with the rf & radio designs in this gallery.
From the project
dodekaedrin muotoinen radio ":D" / dodecahedron shaped radio ":D"
Some intended specs include: included SWR-meter ~5-10W of raw electromagnetic power graphical UI 2 mixer stages, one physical, one done with software
Main components on the Dodekaedri
Dodekaedri bill of materials (BOM)
225 components, 78 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MIC5365 | SOT-23-5 | U201 |
| 1 | SI5351A | MSOP-10_3x3mm_Pitch0.5mm | U202 |
| 1 | NCP3170-D | SOIC-8_3.9x4.9mm_Pitch1.27mm | U401 |
| 1 | 74LVC1G3157 | SOT-23-6_Handsoldering | U501 |
| 3 | 74LVC1G3157 | SOT-23-6_Handsoldering | U502, U601, U602 |
| 1 | TL972IDR | SOIC-8_3.9x4.9mm_Pitch1.27mm | U603 |
| 1 | WM8731 | SSOP-28_5.3x10.2mm_Pitch0.65mm | U701 |
| 1 | MCP6L02 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U702 |
| 1 | STM32F401 | LQFP-64_10x10mm_Pitch0.5mm | U801 |
| 1 | WM8731 | SSOP-28_5.3x10.2mm_Pitch0.65mm | U802 |
| 1 | BCP56 | SOT-223 | Q501 |
| 1 | IRL510 | TO-220_Neutral123_Vertical | Q502 |
| 1 | BSS84 | SOT-23_Handsoldering | Q801 |
| 1 | BARREL_JACK | BARREL_JACK | CON401 |
| 1 | HANDSFREE | TRRS_jack | J801 |
| 1 | BNC | BNC_right_angle | P301 |
| 1 | USB_OTG | USB_Micro-B | P802 |
| 1 | UART | Pin_Header_Straight_1x02 | P803 |
| 1 | PROG | Pin_Header_Straight_1x02 | P804 |
| 1 | RNG_PINS | Pin_Header_Straight_2x08 | P805 |
Show 58 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CONN_01X08 | Pin_Header_Straight_1x08 | P806 |
| 1 | CONN_01X04 | Pin_Header_Straight_1x04 | P807 |
| 1 | CONN_02X04 | Pin_Header_Straight_2x04 | P808 |
| 1 | BOOT0JMPR | Pin_Header_Straight_1x02 | P809 |
| 1 | TCXO 26MHz | TCXO_1.5x2mm | OSC201 |
| 1 | SW_PUSH | SW_SPST_B3SL-1002P | SW801 |
| 3 | SW | SW_SPST_B3SL-1002P | SW802, SW803, SW804 |
| 1 | encoder | encoder | SW806 |
| 1 | RESET | SW_SPST_B3SL-1002P | SW807 |
| 2 | TRANSFO | TRANSF_pads | T301, T302 |
| 1 | TRANSFO2 | transf_5_pin | T501 |
| 1 | TRANSFO2 | transf_5_pin | T601 |
| 1 | BAT54SL | SOT-23_HS_2-1-3 | D301 |
| 8 | BAT54SL | SOT-23_HS_2-1-3 | D302, D303, D805, D806, D807, D809, D810, D812 |
| 1 | BA891 | SOD-523 | D304 |
| 2 | BA891 | SOD-523 | D305, D306 |
| 1 | 824520141 | SMA_Handsoldering | D401 |
| 1 | MSP3V3 | Micro_SMP | D402 |
| 1 | RED | LED_0805 | D501 |
| 9 | BAT54SL | SOT-23_Handsoldering | D801, D803, D804, D818, D819, D820, D821, D822 +1 |
| 1 | PMEG6020EP | D_0805 | D802 |
| 1 | MSP3V3 | Micro_SMP | D814 |
| 7 | FILTER | R_0805_HandSoldering | FB401, FB402, FB501, FB502, FB801, FB802, FB803 |
| 1 | 660NH 660nH | Neosid_Air-Coil_SML_5turn_HDM0531A | L301 |
| 1 | 1µ6 | Neosid_Air-Coil_SML_5turn_HDM0531A | L303 |
| 5 | 470µH | SMT_1007 | L304, L601, L602, L603, L604 |
| 1 | 100µH | psu_ind | L402 |
| 2 | 1µH | Neosid_Air-Coil_SML_5turn_HDM0531A | L501, L502 |
| 1 | 800NH 800nH | Neosid_Air-Coil_SML_5turn_HDM0531A | L503 |
| 16 | 100nF | C_0805_HandSoldering | C201, C204, C205, C306, C309, C502, C505, C509 +8 |
| 1 | 100NF 100nF | C_0805_HandSoldering | C202 |
| 1 | 1NF 1nF | C_0805_HandSoldering | C203 |
| 15 | 1nF | C_0805_HandSoldering | C301, C302, C304, C305, C307, C308, C513, C514 +7 |
| 1 | 10NF 10nF | C_0805_HandSoldering | C310 |
| 1 | 330PF 330pF | C_0805_HandSoldering | C311 |
| 17 | 10µF | C_0805_HandSoldering | C401, C402, C404, C405, C701, C702, C703, C704 +9 |
| 1 | 6N8 6n8 | C_0805_HandSoldering | C403 |
| 3 | 220µF | CAP_6.3x5.8mm | C501, C816, C819 |
| 2 | 330pF | C_0805_HandSoldering | C503, C512 |
| 6 | 10nF | C_0805_HandSoldering | C504, C506, C507, C508, C510, C511 |
| 1 | 68NF 68nF | C_0805_HandSoldering | C602 |
| 3 | 68nF | C_0805_HandSoldering | C603, C604, C605 |
| 35 | 1k | R_0805_HandSoldering | R201, R202, R306, R307, R308, R309, R501, R502 +27 |
| 15 | 100R | R_0805_HandSoldering | R203, R204, R205, R206, R305, R512, R513, R601 +7 |
| 1 | 100R | R_0805_HandSoldering | R207 |
| 1 | 7K87 7k87 | R_0805_HandSoldering | R301 |
| 1 | 47R | R_0805_HandSoldering | R302 |
| 1 | 47R | R_0805_HandSoldering | R303 |
| 1 | 100K 100k | R_0805_HandSoldering | R304 |
| 8 | 100k | R_0805_HandSoldering | R401, R511, R801, R803, R805, R807, R808, R813 |
| 1 | 4K99 4k99 | R_0805_HandSoldering | R402 |
| 1 | 24K9 24k9 | R_0805_HandSoldering | R403 |
| 2 | 7k87 | R_0805_HandSoldering | R404, R822 |
| 1 | 10R | R_0805_HandSoldering | R504 |
| 1 | 0.1PF 0.1pF | R_0805_HandSoldering | R505 |
| 1 | 0R1 | R_0805_HandSoldering | R508 |
| 4 | 0.1pF | R_0805_HandSoldering | R701, R702, R810, R811 |
| 2 | 0R | R_0805_HandSoldering | R704, R705 |
Dodekaedri design files
The KiCad project lives in the e-xla/dodekaedri repository on GitHub; these links point at the commit this page was built from.
Dodekaedri: common questions
What microcontroller does the Dodekaedri use?
The Dodekaedri is built around the STM32F401, from the STM32 family.
How big is the Dodekaedri PCB?
The Dodekaedri measures 76.2 × 76.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Dodekaedri?
225 components, from 78 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 Dodekaedri design files?
From the e-xla/dodekaedri repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Dodekaedri design in my own project?
The repository has no license, so all rights stay with e-xla. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Dodekaedri 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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