Parsnip
About the Parsnip PCB
Parsnip is an open source ESP32 PCB design by LimesKey, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 60 × 130 mm, with 400 components from 161 distinct parts.
Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the QMC6309, TVS2200DRVR, TPD8S300ARUKR, TPS25751DREFR and MAX17320G22+. By type, the board carries 168 capacitors, 130 resistors, 23 diodes, 20 ICs, 16 transistors and 13 connectors.
It belongs with the rf & radio, power & battery and displays & leds designs in this gallery.
From the project
A portable LoRa communicator. Custom 4-layer PCB (ESP32-S3 + E22P-915M30S LoRa + NEO-M9N GNSS), designed in KiCad for 915 MHz.
The goal is a self-contained LoRa node that pairs one of the longest range, best value LoRa modules, with an accurate GNSS reciever, running off two 21700 cells in series, to connect to other people on the LoRa mesh network community.
- 4-layer with ENIG, 60 x 130 mm - JLCPCB JLC04161H-7628 stackup, 2 oz copper outer, 2 oz copper inner - L1-L2 prepreg 0.2104 mm, Dk 4.4 - RF: 0.36mm trace width for ~50 Ω CPWG on this stackup, ground rails stitched with 0.3 mm / 0.6 mm vias at roughly 1.5 to 2 mm pitch
Main components on the Parsnip
Parsnip bill of materials (BOM)
400 components, 161 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S3-WROOM-1-N16R8 Espressif Systems | ESP32-S3-WROOM-1 | U1 |
| 1 | QMC6309 QST | X1-WLB0808-4_L0.8-W0.8-P0.40-TL | U2 |
| 1 | TVS2200DRVR TVS2200DRV Texas Instruments | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U3 |
| 1 | TPD8S300ARUKR TPD8S300A Texas Instruments | WQFN-20_L3.0-W3.0-P0.40-TL-EP1.7 | U4 |
| 1 | TPS25751DREFR Texas Instruments | Texas_REF0038A_WQFN-38-2EP_6x4mm_P0.4 | U5 |
| 1 | MAX17320G22+ Analog Devices (Maxim) | QFN-24_L4.0-W4.0-P0.50-BL-EP2.6 | U7 |
| 1 | BQ25798RQMR BQ25798 Texas Instruments | Texas_RQM0029A_VQFN-29_4x4mm_P0.4mm | U8 |
| 1 | NEO-F10N-00B NEO-F10N u-blox | ublox_NEO | U9 |
| 1 | TPS7A2033PDBVR Texas Instruments | SOT-23-5_L2.9-W1.6-P0.95-LS2.8-BR | U10 |
| 1 | TPS259474LRPWR Texas Instruments | VQFN-10_L2.0-W2.0-P0.45-TL | U11 |
| 1 | E22P-915M30S Ebyte | COMM-SMD_22P-P2.54-L38.5-W24.0_E22-400M33S | U12 |
| 2 | LM61460AASQRJRRQ1 Texas Instruments | VQFN-14-HR_L4.0-W3.5-TL_LM61460AASQRJRRQ1 | U13, U14 |
| 1 | TPS259474ARPWR Texas Instruments | VQFN-10_L2.0-W2.0-P0.45-TL | U15 |
| 1 | SN74LVC1G74DQER SN74LVC1G74 Texas Instruments | X2SON-8_1.4x1mm_P0.35mm | U16 |
| 1 | TCAL9539RTWRQ1 Texas Instruments | TQFN-24_L4.0-W4.0-P0.50-BL-EP2.3 | U17 |
| 2 | WS2816B Worldsemi | LED-SMD_6P-L5.0-W5.0-TL | U18, U20 |
| 1 | SN74LV1T34DCKR SN74LV1T34DCK Texas Instruments | SOT-353_SC-70-5 | U19 |
| 1 | M24512-DFMC6TG STMicroelectronics | DFN-8-1EP_3x2mm_P0.5mm_EP1.36x1.46mm | U21 |
| 2 | CSD23280F3T CSD23280F3 Texas Instruments | Texas_PicoStar_DFN-3_0.69x0.60mm | Q1, Q3 |
| 2 | CSD15380F3 Texas Instruments | Texas_PicoStar_DFN-3_0.69x0.60mm | Q2, Q4 |
Show 141 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | AON7544 Alpha & Omega Semiconductor | PQFN-8_L3.1-W3.1-P0.65-LS3.3-BL | Q5, Q6 |
| 2 | CSD18512Q5B Texas Instruments | VSONP-8-1EP_5x6_P1.27mm | Q7, Q8 |
| 2 | SI2308 HXY MOSFET | SOT-23 | Q9, Q10 |
| 1 | CSD17577Q3A Texas Instruments | VSON-8_3.3x3.3mm_P0.65mm_NexFET | Q11 |
| 1 | AO3401A UMW | SOT-23 | Q12 |
| 1 | BSS138 KUU | SOT-23 | Q13 |
| 2 | 2N7002 MSKSEMI | SOT-23 | Q14, Q15 |
| 1 | TPN2R203NC,L1Q(M TPN2R203NC Toshiba | TSON-8_L3.1-W3.1-P0.65-LS3.3-BL-EP | Q16 |
| 1 | 3131M-32.768DT06LL-R50L 32.768kHz HCI | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | SX1M4.000M10F30TNN SCTF | Oscillator_SMD_SiT_PQFN-4Pin_2.0x1.6mm | Y2 |
| 1 | HX PM2.54-1x6P WT SPI BUS HANXIA | HDR-SMD_6P-P2.54-H-F-W11.7 | J1 |
| 1 | SM04B-SRSS-TB(LF)(SN) I2C3 JST | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J2 |
| 1 | HX PM2.54-1x4P WT I2C1 HANXIA | CONN-SMD_4P-P2.54_HX-PM2.54-1X4PWT | J3 |
| 1 | WAFER-MX1.25-8PWB e-Ink Display Connector XUNPU | Molex_PicoBlade_53261-0871_1x08-1MP_P1.25mm_Horizontal | J5 |
| 1 | SM03B-SRSS-TB(LF)(SN) UART0 JST | JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J6 |
| 1 | USB4105-GF-A-060 GCT | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J7 |
| 1 | 1.25-2PWB BAT_PORT DEALON | Molex_PicoBlade_53261-0271_1x02-1MP_P1.25mm_Horizontal | J9 |
| 1 | S2B-PH-SM4-TB(LF)(SN) SOLAR JST | JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | J10 |
| 2 | SMA-KE-347-H13.5-1.6 XUNPU | SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount | J11, J13 |
| 1 | U.FL-R-SMT-1(80) U.FL Hirose | U.FL_Hirose_U.FL-R-SMT-1_Vertical | J12 |
| 1 | HX PM2.54-2x8P WT GPIO_Expander HANXIA | HDR-SMD_16P-P2.54_HXPM2.54-2X8PWT | J14 |
| 1 | S4B-XH-SM4-TB(LF)(SN) LED 5V JST | JST_XH_S4B-XH-SM4-TB_1x04-1MP_P2.50mm_Horizontal | J15 |
| 2 | BH-21700-B1BJ001 21700 Li-ion MYOUNG | BAT-SMD_L82.5.5-W25-BH-21700-B1BJ001 | BT1, BT2 |
| 1 | MS621FE-FL11E MS621FE 5.5mAh Seiko Instruments | BatteryHolder_Seiko_MS621F | BT3 |
| 2 | ASMD0805-100 1A hold JDT | Fuse_0805_2012Metric | F1, F3 |
| 1 | SL0805200-12V 2A hold TECHFUSE | Fuse_0805_2012Metric | F2 |
| 1 | SMD0805B035TF 350mA hold Brightking | Fuse_0805_2012Metric | F4 |
| 1 | BSMD2920L-1000-21V 10A Hold BHFUSE | Fuse_2920_7451Metric | F5 |
| 1 | JSMD1812-300 3A hold JKSEMI | Fuse_1812_4532Metric | F6 |
| 1 | B39162B8389P810 Qualcomm (RF360) | Filter_1411-5_1.4x1.1mm | FL1 |
| 1 | 0900LP15B0063001E Johanson Technology | FILTER-SMD_0805-8P-L2.0-W1.2-TL | FL2 |
| 1 | SKRKAHE020 ESP_RESET Alps Alpine | SW_Push_SPST_NO_Alps_SKRK | SW1 |
| 1 | SKRKAHE020 BOOT Alps Alpine | SW_Push_SPST_NO_Alps_SKRK | SW2 |
| 1 | SKRKAHE020 RESET_GNSS Alps Alpine | SW_Push_SPST_NO_Alps_SKRK | SW4 |
| 1 | SKRKAHE020 SAFEBOOT_GNSS Alps Alpine | SW_Push_SPST_NO_Alps_SKRK | SW5 |
| 5 | NCU18XH103D60RB 10k Murata | R_0603_1608Metric | TH1, TH2, TH3, TH4, TH5 |
| 3 | ESDS314DBVR Texas Instruments | SOT-23-5 | D1, D2, D3 |
| 1 | 1N5819WS Hottech | D_SOD-323 | D4 |
| 1 | SMF10A AnBon | D_SOD-123 | D5 |
| 1 | BZX585-C15,135 BZX585-C15 Nexperia | D_SOD-523 | D6 |
| 1 | TVS2200DRVR TVS2200DRV Texas Instruments | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | D7 |
| 1 | YLED0805YG CHARGING YONGYUTAI | LED_0805_2012Metric | D8 |
| 1 | SS36B Baocheng | D_SMB | D9 |
| 2 | ESD501DPYR ESD501 Texas Instruments | Texas_DPY0002A_0.6x1mm_P0.65mm | D10, D13 |
| 1 | GL0805UR01 LED Red Guiguang | LED_0805_2012Metric | D11 |
| 1 | GL0805UB01 LED Blue Guiguang | LED_0805_2012Metric | D12 |
| 1 | ESD351DPYR Texas Instruments | Texas_DPY0002A_0.6x1mm_P0.65mm | D14 |
| 2 | RB531SM-30T2R RB531SM-30 ROHM | D_SOD-523 | D15, D16 |
| 2 | TPD1E10B06DPYR TPD1E10B06 Texas Instruments | Texas_DPY0002A_0.6x1mm_P0.65mm | D17, D19 |
| 1 | PGB1010603NR PGB1010603 Littelfuse | D_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D18 |
| 1 | SMF6.0A UMW | D_SOD-123F | D20 |
| 1 | BAT54A ALJ | SOT-23 | D21 |
| 1 | BAT54W Slkor | SOT-323_SC-70 | D22 |
| 1 | BAT54SLT1G BAT54S onsemi | SOT-23 | D23 |
| 1 | BLM18HG601SN1D Murata | L_0603_1608Metric | FB1 |
| 1 | MWSA0503S-2R2MT 2.2uH Sunlord | L_Sunlord_MWSA0503S | L1 |
| 1 | LQW18AN47NG00D 47nH Murata | L_0603_1608Metric | L2 |
| 1 | LQW18ANR47G00D 470nH Murata | L_0603_1608Metric | L3 |
| 1 | CMLO1040H2R2MTT 2.2uH Cybermax | L_APV_APH1040 | L4 |
| 1 | CMLO1040H3R3MTT 3.3uH Cybermax | L_APV_APH1040 | L5 |
| 2 | MLG1005S5N1CTD25 5.1nH TDK | L_0402_1005Metric | L6, L7 |
| 7 | HGC0402R5225K350NTEJ 2.2uF Chinocera | C_0402_1005Metric | C1, C2, C3, C8, C13, C104, C181 |
| 19 | 0402B104J500NT 100nF FH (Fenghua) | C_0402_1005Metric | C5, C19, C24, C49, C50, C51, C54, C61 +11 |
| 2 | FN15N7R0D500PNG 7pF PSA (Prosperity Dielectrics) | C_0402_1005Metric | C6, C7 |
| 24 | TCC0603X5R106M350CT 10uF CCTC | C_0603_1608Metric | C10, C11, C12, C16, C110, C122, C123, C124 +16 |
| 10 | CGA0805X5R106M500MT 10uF HRE | C_0805_2012Metric | C14, C38, C40, C42, C44, C48, C67, C68 +2 |
| 17 | TCC0402X7R105K250AT 1uF CCTC | C_0402_1005Metric | C17, C18, C20, C25, C39, C41, C43, C45 +9 |
| 8 | TCC0402X7R103M500AT 10nF CCTC | C_0402_1005Metric | C21, C22, C23, C47, C98, C105, C132, C134 |
| 24 | HGC1206R7106K500NSPJ 10uF Chinocera | C_1206_3216Metric | C26, C27, C28, C29, C30, C32, C34, C35 +16 |
| 1 | HGC0805R7475K500NSLJ 4.7uF Chinocera | C_0805_2012Metric | C31 |
| 2 | TCC0402COG331F500AT 330pF CCTC | C_0402_1005Metric | C33, C36 |
| 1 | HGC0603R7105K500NTHJ 1uF Chinocera | C_0603_1608Metric | C37 |
| 3 | HGC0402R5105K500NTEJ 1uF Chinocera | C_0402_1005Metric | C52, C117, C118 |
| 4 | HGC0402R5474K250NTEJ 0.47uF Chinocera | C_0402_1005Metric | C53, C55, C56, C58 |
| 2 | CS2012X7R225K500NRE 2.2uF Samwha | C_0805_2012Metric | C62, C79 |
| 3 | TCC0402X7R473K500AT 47nF CCTC | C_0402_1005Metric | C75, C76, C77 |
| 1 | HGC0603R5475K350NTHJ 4.7uF Chinocera | C_0603_1608Metric | C78 |
| 1 | TCC0402COG220J500AT 22pF CCTC | C_0402_1005Metric | C93 |
| 2 | CGA0402C0G470J500GT 47pF HRE | C_0402_1005Metric | C95, C115 |
| 2 | TCC0402X7R103M500AT 10nF CCTC | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C96, C97 |
| 8 | CGA0402X5R106M100GT 10uF HRE | C_0402_1005Metric | C99, C100, C102, C103, C106, C107, C111, C130 |
| 1 | CGA0402X5R475M250GT 4.7uF HRE | C_0402_1005Metric | C101 |
| 4 | GRM1555C1H222GA01D 2.2nF Murata | C_0402_1005Metric | C108, C109, C161, C162 |
| 3 | CC0402CG50V102JN 1nF TORCH | C_0402_1005Metric | C112, C159, C160 |
| 2 | CL31A226KAHNNNE 22uF Samsung Electro-Mechanics | C_1206_3216Metric | C119, C120 |
| 4 | HGC0603R5225K500NTHJ 2.2uF Chinocera | C_0603_1608Metric | C125, C129, C135, C145 |
| 3 | CL21A226MAYNNNE 22uF Samsung Electro-Mechanics | C_0805_2012Metric | C144, C147, C185 |
| 2 | FN15N5R6D500PNG 5.6pF PSA (Prosperity Dielectrics) | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C153, C158 |
| 8 | HGC0603R5226M160NTHJ 22uF Chinocera | C_0603_1608Metric | C155, C157, C165, C166, C167, C170, C171, C186 |
| 4 | 1RC0402F3309 33 SAE | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2, R3, R4 |
| 14 | CRCW04020000Z0EDHP 0 Vishay | R_0402_1005Metric | R5, R6, R12, R13, R14, R15, R18, R19 +6 |
| 15 | FRH0402D1002TS 10k FOJAN | R_0402_1005Metric | R7, R9, R35, R38, R46, R67, R76, R92 +7 |
| 1 | RS-05L1005FT 10M FH (Fenghua) | R_0805_2012Metric | R8 |
| 2 | ARG02DTC0220 22 Viking Tech | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R10, R11 |
| 3 | ARG02DTC0220 22 Viking Tech | R_0402_1005Metric | R16, R17, R98 |
| 5 | FRH0402D1002TS 10k FOJAN | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R20, R24, R25, R26, R133 |
| 4 | TC0225B2201TCC 2.2k UNI-ROYAL | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R21, R22, R68, R72 |
| 1 | ARG02BTC1003 100k Viking Tech | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R23 |
| 14 | ARG02BTC1003 100k Viking Tech | R_0402_1005Metric | R27, R28, R30, R56, R77, R79, R86, R91 +6 |
| 3 | WF04H1004BTL 1M Walsin | R_0402_1005Metric | R29, R31, R102 |
| 2 | TC0225B2201TCC 2.2k UNI-ROYAL | R_0402_1005Metric | R36, R37 |
| 2 | RT1206BRD07150RL 150 YAGEO | R_1206_3216Metric | R39, R40 |
| 1 | YHR0805SE1DR005F5 5m Yohey | R_Shunt_0805_2012Metric_Kelvin | R41 |
| 2 | 1RC0402F1009 10 SAE | R_0402_1005Metric | R42, R120 |
| 5 | FRH0402B1001TS 1k FOJAN | R_0402_1005Metric | R43, R45, R71, R78, R99 |
| 5 | FRH0402D1000TS 100 FOJAN | R_0402_1005Metric | R44, R48, R59, R63, R103 |
| 1 | FRP1210F3300TS 330 FOJAN | R_1210_3225Metric | R47 |
| 2 | FRC0402F2R00TS 2 FOJAN | R_0402_1005Metric | R49, R62 |
| 1 | RT0603BRD075K23L 5.23k YAGEO | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R51 |
| 1 | TC0325B3012T5F 30.1k UNI-ROYAL | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R52 |
| 4 | RT0402BRD07294RL 294 YAGEO | R_0402_1005Metric | R53, R57, R60, R61 |
| 1 | ARG03BTC2432 24.3k Viking Tech | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R54 |
| 1 | THD03H6812BT 68.1k FH (Fenghua) | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R55 |
| 1 | ARG02BTC8201 8.2k Viking Tech | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R58 |
| 1 | TC0225B3001TCC 3k UNI-ROYAL | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R66 |
| 1 | TC0225B2001TCC 2k UNI-ROYAL | R_0402_1005Metric | R70 |
| 1 | AS05W2J0620T5E 62 UNI-ROYAL | R_0805_2012Metric | R74 |
| 2 | CRCW04020000Z0EDHP 0 Vishay | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R75, R95 |
| 2 | AR02DTC1500 150 Viking Tech | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R80, R83 |
| 1 | RK73H1ETTP37R4F 37.4 KOA Speer | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R81 |
| 1 | AR02BTC4701 4.7k Viking Tech | R_0402_1005Metric | R82 |
| 1 | AR02BTC1503 150k Viking Tech | R_0402_1005Metric | R84 |
| 1 | RT0603BRD07215KL 215k YAGEO | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R85 |
| 1 | ARG02BTC1133 113k Viking Tech | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R87 |
| 1 | GR0402F6K65TAG00 6.65k GiantOhm | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R88 |
| 1 | AT0603BRD07200KL 200k YAGEO | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R89 |
| 1 | RE0402BRE07301KL 301k YAGEO | R_0402_1005Metric | R90 |
| 1 | 0805W8F0000T5E 0 UNI-ROYAL | R_0805_2012Metric | R100 |
| 4 | TC0350B4023T5F 402k UNI-ROYAL | R_0603_1608Metric | R104, R107, R115, R121 |
| 2 | RT0402BRD076K04L 6.04k YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R109, R110 |
| 2 | FRH0402D1000TS 100 FOJAN | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R111, R117 |
| 1 | 1RC0402F1009 10 SAE | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R114 |
| 1 | RT0402BRD07174KL 174k YAGEO | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R116 |
| 1 | RT0805BRD07101KL 101k YAGEO | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R122 |
| 2 | FRH0402B1001TS 1k FOJAN | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R123, R124 |
| 1 | RT0402BRD0786K6L 86.6k YAGEO | R_0402_1005Metric | R125 |
| 1 | PTFR0402B3K92P9 3.92k RESI | R_0402_1005Metric | R126 |
| 1 | RT0402BRD0727K4L 27.4k YAGEO | R_0402_1005Metric | R127 |
| 1 | WR04X5490FTL 549 Walsin | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R128 |
| 1 | RT0603BRD07280KL 280k YAGEO | R_0603_1608Metric | R129 |
| 1 | 4D02WGF1002TCE 10k UNI-ROYAL | R_Array_Concave_4x0402 | RN1 |
Parsnip design files
The KiCad project lives in the LimesKey/parsnip-node repository on GitHub; these links point at the commit this page was built from.
- Layoutparsnip.kicad_pcb
- Schematicparsnip.kicad_sch
- BOMproduction/bom.csv
Parsnip: common questions
What microcontroller does the Parsnip use?
The Parsnip is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.
How big is the Parsnip PCB?
The Parsnip measures 60 × 130 mm, has 4 copper layers and is 1.59648 mm thick.
How many components are on the Parsnip?
400 components, from 161 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 Parsnip design files?
From the LimesKey/parsnip-node 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 Parsnip design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
Can I test firmware for the Parsnip without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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