Supercap
About the Supercap PCB
Supercap is an open source RP2040/RP2350 PCB design by Twisted-Fields, published on GitHub. It is a 4-layer board measuring 109 × 155.5 mm, with 184 components from 66 distinct parts.
Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the USBLC6-4SC6, W25Q128JVSIQ, ADC081S021CISD/NOPB, INA181A2 and USBLC6-2P6. By type, the board carries 53 capacitors, 42 resistors, 34 diodes, 15 transistors, 14 ICs and 10 jumpers.
It belongs with the robotics & motion designs in this gallery.
From the project
PCB hardware designs in KICAD for Acorn, the precision farming rover from Twisted Fields.
PCBs designed in Kicad for Acorn the farming robot.
Our dream is that you will fab your own boards, make changes, and share your work - giving this design life beyond our efforts.
Designed by Taylor Alexander for Twisted Fields, for the Acorn Precision Farming Rover.
Many thanks to Daniel Theobald. Without your financial support and encouragement this project would not have been possible.
Main components on the Supercap
Supercap bill of materials (BOM)
184 components, 66 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-4SC6 | SOT-23-6 | U1 |
| 1 | W25Q128JVSIQ | SOIC-8_5.23x5.23mm_P1.27mm | U2 |
| 2 | ADC081S021CISD/NOPB | SOT-23-6 | U3, U5 |
| 1 | RP2040 | RP2040-QFN-56 | U4 |
| 2 | INA181A2 | SOT-23-6 | U6, U7 |
| 1 | USBLC6-2P6 | SOT-666 | U8 |
| 1 | MT2492 | SOT-23-6 | U9 |
| 1 | ADS7822U | SOIC127P599X175-8N | U10 |
| 1 | TX4139 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm_ThermalVias | U11 |
| 1 | TLV1117LV33DCYR | SOT-223-3_TabPin2 | U12 |
| 1 | TXS0101DCKR | SOT-363_SC-70-6 | U13 |
| 1 | C29981 EL357N(C)(TA)-G | SO-4_4.4x3.6mm_P2.54mm | U14 |
| 3 | C2891566 Q_NMOS_GSD | SOT-23 | Q1, Q10, Q11 |
| 12 | C2758447 100V 34A PMOS | TO-252-2 | Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9 +4 |
| 1 | 12MHZ 12MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | C2835315 CPU2 USB | USB_C_Receptacle_XKB_U262-16XN-4BVC11 | J1 |
| 1 | CONN_01X06 Conn_01x06 | Ckmtw-W-2510S06P_1x06_P2.54mm_Vertical | J2 |
| 1 | Power Output | PowerPole_PP45_1336G1_1x2_Horizontal | J3 |
| 2 | CONN_01X02 Conn_01x02 | PowerPole_PP45_1336G1_1x2_Horizontal | J4, J5 |
| 1 | C402777 CAN2 PLUG | PINREX-744-81-04TW00 _1x04_P2.54mm_Vertical | J6 |
Show 46 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 10 | SOLDERJUMPER_2_OPEN SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8 +2 |
| 4 | SW_MEC_5G | SW_TS_1101_C_W | SW1, SW2, SW3, SW4 |
| 2 | C13564 Thermistor 10k | R_0603_1608Metric | TH1, TH2 |
| 1 | TestPoint | TestPoint_Loop_D2.60mm_Drill1.6mm_Beaded | TP1 |
| 1 | C8598 B5819W SL | D_SOD-123 | D1 |
| 20 | C551192 2.4v zener | DIO_PESD5V0S1UL_315 | D2, D3, D4, D5, D6, D7, D8, D9 +12 |
| 2 | SMAJ51A | D_SMA | D22, D24 |
| 2 | C95872 D | D_SMA | D23, D25 |
| 1 | SS310 | D_SMA | D26 |
| 3 | 1N4148WS | D_SOD-323 | D27, D28, D29 |
| 3 | WS2812B | LED_WS2812_3528_3.5x2.8mm_P1.5mm | D30, D31, D32 |
| 2 | C85383 Zener 10v | D_SOD-323 | D33, D34 |
| 1 | 10UH 10uH | L_Sunlord_SWPA5040S | L1 |
| 1 | 47UH 47uH | L_Chilisin_BMRB00060612 | L2 |
| 2 | 20P 20p | C_0603_1608Metric | C1, C2 |
| 6 | 1u | C_0603_1608Metric | C3, C16, C28, C32, C39, C45 |
| 14 | 100N 100n | C_0603_1608Metric | C4, C14, C15, C29, C30, C31, C33, C34 +6 |
| 20 | 120F 2.3v | CP_Radial_D18.0mm_P7.50mm | C5, C6, C7, C8, C9, C10, C11, C12 +12 |
| 1 | C2887234 47uF 63V solid | CP_Radial_D8.0mm_P3.50mm | C40 |
| 2 | C602037 22uF 25V | C_0805_2012Metric | C42, C52 |
| 1 | C342614 4.7uF 100V | C_1210_3225Metric | C43 |
| 1 | C28233 100nF 100V | C_0805_2012Metric | C44 |
| 1 | 22NF 22nF | C_0603_1608Metric | C46 |
| 1 | 10U 10u | C_0805_2012Metric | C48 |
| 1 | 22PF 22pF | C_0603_1608Metric | C49 |
| 1 | C59461 47uF 10v | C_0805_2012Metric | C50 |
| 1 | 47PF 47pf | C_0603_1608Metric | C51 |
| 1 | C340768 220uF 25V | CP_Elec_6.3x7.7 | C53 |
| 2 | 10K 10k | R_1206_3216Metric | R1, R24 |
| 2 | C270948 1k 2 watt | R_2512_6332Metric | R2, R3 |
| 2 | 1.1K 1.1k | R_0603_1608Metric | R4, R8 |
| 3 | 5.1K 5.1k | R_0603_1608Metric | R6, R7, R43 |
| 2 | 10K 10k | R_0603_1608Metric | R9, R10 |
| 2 | 27 | R_0603_1608Metric | R11, R12 |
| 3 | 3mΩ | R_2512_6332Metric | R13, R14, R15 |
| 8 | C309610 100R 2W | R_2512_6332Metric | R16, R17, R18, R19, R20, R21, R22, R23 |
| 1 | 50mΩ | R_0603_1608Metric | R25 |
| 1 | 10Ω | R_0603_1608Metric | R26 |
| 6 | C304067 50k 0.1% | R_0603_1608Metric | R27, R28, R34, R35, R37, R38 |
| 3 | C122969 5.1k 0.1% | R_0603_1608Metric | R29, R36, R39 |
| 1 | C100721 110k 0.1% | R_0603_1608Metric | R30 |
| 1 | C22809 15k 0.1% | R_0603_1608Metric | R31 |
| 1 | 300K 300k | R_0603_1608Metric | R32 |
| 1 | 21.5K 21.5k | R_0603_1608Metric | R33 |
| 2 | C175463 2k 2 watt | R_2512_6332Metric | R40, R41 |
| 1 | 120R | R_0603_1608Metric | R42 |
Supercap design files
The KiCad project lives in the Twisted-Fields/acorn-robot-electronics repository on GitHub; these links point at the commit this page was built from.
Supercap: common questions
What microcontroller does the Supercap use?
The Supercap is built around the RP2040, from the RP2040/RP2350 family.
How big is the Supercap PCB?
The Supercap measures 109 × 155.5 mm, has 4 copper layers and is 1.609 mm thick.
How many components are on the Supercap?
184 components, from 66 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 Supercap design files?
From the Twisted-Fields/acorn-robot-electronics 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 Supercap design in my own project?
The repository has no license, so all rights stay with Twisted-Fields. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Supercap without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.
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