4 layers150 × 30 mm
Single sh proto
andrewsharmon/rp2350-stepper-controller
Low-cost 10-axis sine-microstepping controller for small steppers on the RP2350 (PIO + DMA). WIP.
163 partsMIT
6 layers90 × 80 mm
LoiterGuardPcb
AaronWiersma/LoiterGuardPcb- Size
- 90 × 80 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 205
- Nets
- 185
- Pads
- 700
- Tracks, vias
- 1,659, 364
- Pours
- 51
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Feb 2026
- Updated
- 26 Feb 2026
Overview
LoiterGuardPcb is an open-source printed circuit board by AaronWiersma, from the AaronWiersma/LoiterGuardPcb repository on GitHub. It is a 6-layer board of 90 × 80 mm with 205 parts on 185 nets, routed with 1,659 tracks and 364 vias.
It is built around the DFR0299, ESP32-S3-WROOM-1-N16R8 and SI4435DYPBF-HXY, with the 74AHC1G08GW, KTA1170GVAE-TB and B2B-PH-K-S among its other parts. Its parts include 69 resistors, 64 capacitors, 12 connectors, 10 ICs and 6 transistors. It belongs with the ESP32 boards of this library.
Main components
12
DFR0299
THroughholeTHroughhole V-Audio Modules ROHSDFRobotV-Audio Modules
ESP32-S3-WROOM-1-N16R8
SMD,25.5x18mm-103.5dBm -40℃~+65℃ 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA ESP32-S3R8 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
SI4435DYPBF-HXY
SOP-8-55℃~+150℃ 1 P-Channel 11A 16mΩ@10V 2.5W 210pF 30V 3V 4.7nF 45nC SOP-8 MOSFETs ROHSHXY MOSFETMOSFETs
74AHC1G08GW
SOT-353-40℃~+125℃ 1 1.5V~3.85V 1.9V~2V、2.9V~3V、3.7V~3.94V、4.4V~4.5V 100mV、360mV~550mV 10nA 2 2V~5.5V 500mV~1.65V 74AHC Series 9.5ns@3.3V,15pF AND Gate Overvoltage-tolerant input StandardCMOS SOT-353 Logic Gates ROHSMDDLogic GatesKTA1170GVAE-TB
-- Lack of specifications ROHSKINETICUncategorised
B2B-PH-K-S
插件,P=2mmUncategorisedJST
PDTC114EU,115-JSM
SOT-323-55℃~+150℃ 1 NPN (Pre-Biased) 1.2 13kΩ 250MHz 300mV@10mA,0.5mA 3V@10mA,0.3V 500mV@100uA,5V NPN SOT-323 Digital Transistors ROHSJSMSEMIDigital Transistors
SS54
SMA(DO-214AC)-55℃~+125℃ 1mA@40V 40V 550mV@5A 5A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
B6B-PH-SM4-TB
SMD,P=2mm-25℃~+85℃ 1 100V 15.95mm 1x6P 2A 2mm 6 6.6mm 6P 7mm Auxiliary Solder Pin Beige Copper alloy PA PH Surface Mount,Vertical Tin UL94V-0 SMD,P=2mm Wire To Board Connector ROHSJSTWire To Board Connector2920L400/15MR-A
SMD,5.1x7.4mm-40℃~+85℃ 1.5W 10mΩ 15V 40A 40mΩ 4A 4s 8A SMD,5.1x7.4mm Resettable Fuses ROHSLittelfuseResettable Fuses
7M-25.000MAAJ-T
SMD3225-4P-20℃~+70℃ 18pF 25MHz 60Ω ±30ppm ±30ppm SMD3225-4P Crystals ROHSTXC CorpCrystals
Parts
205| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 10k | Resistor_SMD:R_0603_1608Metric | R24, R25, R26, R43, R44, R45, R46, R48, R51, R55, R56, R58, R59, R60, R61, R62 +2 |
| 17 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C6, C23, C28, C29, C34, C35, C36, C37, C38, C40, C47, C49, C52, C55, C57, C59 +1 |
| 8 | 22uF | Capacitor_SMD:C_0805_2012Metric | C10, C11, C14, C15, C30, C31, C32, C33 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP1, TP8, TP9, TP10, TP11, TP12, TP13, TP14 |
| 7 | 10nF | Capacitor_SMD:C_0603_1608Metric | C26, C27, C39, C53, C54, C56, C58 |
| 6 | 0 | Resistor_SMD:R_0603_1608Metric | R22, R32, R33, R34, R35, R52 |
| 6 | 10uF | Capacitor_SMD:C_0805_2012Metric | C2, C24, C25, C46, C51, C61 |
| 5 | 5VIN | TestPoint:TestPoint_Pad_D2.0mm | TP3, TP15, TP16, TP17, TP18 |
| 4 | 0.03R/1%/R1206 | OLIMEX_RLC-FP:R_1206_5MIL_DWS | R7, R8, R9, R10 |
| 4 | 100k | Resistor_SMD:R_0603_1608Metric | R4, R11, R65, R67 |
| 4 | B2B-PH-K-S | B2B-PH-K-S:JST_B2B-PH-K-S | J4, J6, J8, J9 |
| 3 | 100 | Resistor_SMD:R_0603_1608Metric | R47, R66, R68 |
| 3 | 18pF | Capacitor_SMD:C_0603_1608Metric | C20, C21, C22 |
| 3 | 3V3 | TestPoint:TestPoint_Pad_D2.0mm | TP4, TP5, TP7 |
| 3 | PDTC114EU_115 | PDTC114EU_115:SOT65P210X110-3N | Q3, Q4, Q5 |
| 3 | SS54 | SS34:DIOM7959X265N | D2, D3, D4 |
| 2 | 100nF/100V/10%/X7R/C0603 | OLIMEX_RLC-FP:C_0603_5MIL_DWS | C12, C13 |
| 2 | 100uF | T495X107M025ATE150:CAPMP7.6X4.3_4.3N_KEM | C48, C50 |
| 2 | 10k_0402_0402WGF1002TCE | Resistor_SMD:R_0402_1005Metric | R49, R50 |
| 2 | 12pF/50V/5%/C0G/C0402 | OLIMEX_RLC-FP:C_0402_5MIL_DWS | C16, C17 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R54, R57 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C4, C45 |
| 2 | 2.05k 1% | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R17, R18 |
| 2 | 20k 1% | Resistor_SMD:R_0603_1608Metric | R28, R30 |
| 2 | 330 | Resistor_SMD:R_0603_1608Metric | R41, R42 |
| 2 | 33uH/5.5A/60mR/20%/YSRH129-330M | OLIMEX_RLC-FP:HSMRH129_12.0x12.5x9.5(max) | L2, L3 |
| 2 | 470uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C62, C63 |
| 2 | 49.9 1% | Resistor_SMD:R_0603_1608Metric | R36, R38 |
| 2 | 6.9nF | Capacitor_SMD:C_1206_3216Metric | C43, C44 |
| 2 | 82 1% | Resistor_SMD:R_0603_1608Metric | R37, R39 |
| 2 | 9.1k/1W/R2512 | OLIMEX_RLC-FP:R_2512_MM_DWS | R5, R6 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q6, Q7 |
| 2 | AP62201Z6-7 | AP62201Z6_7:SOT563-Z6_1_DIO | U5, U6 |
| 2 | B6B-PH-SM4-TB | B6B-PH-SM4-TB:JST_B6B-PH-SM4-TB | J3, J7 |
| 2 | NA(220pF/100V/C0603) | OLIMEX_RLC-FP:C_0603_5MIL_DWS | C8, C9 |
| 2 | NA(22R/R0603) | OLIMEX_RLC-FP:R_0603_5MIL_DWS | R15, R16 |
| 2 | NRS5024T2R2NMGJ-2.2hF | NRS5024T2R2NMGJ:IND_NRS5024_TAY | L5, L6 |
| 2 | SI4435DYPBF | SI4435DYPBF:SOIC127P600X175-8N | IC1, IC2 |
| 2 | SS510/100V/5A/0.85V/DO214AB(SMC) | OLIMEX_Diodes-FP:DO214AB(SMC)_1(K)-2(A) | D5, D6 |
| 2 | TX4138(ESOIC-8) | OLIMEX_Regulators-FP:ESOIC-8 | U3, U4 |
| 1 | 0.22uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 1.27k 1% 62.5mW | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R2 |
| 1 | 10 1% | Resistor_SMD:R_0603_1608Metric | R40 |
| 1 | 100nF/100V/10%/X7R/C0603 | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 100uF/63V/20%/Low_ESR/RM5/10x13MM | OLIMEX_RLC-FP:CPOL-RM5mm_10.0x16.0mm_PTH | C5 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C41 |
| 1 | 12.4k 1% | Resistor_SMD:R_0603_1608Metric | R31 |
| 1 | 12V | TestPoint:TestPoint_Pad_D2.0mm | TP2 |
| 1 | 1M | Resistor_SMD:R_1206_3216Metric | R69 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 2.2nF | Capacitor_SMD:C_1812_4532Metric | C64 |
| 1 | 220uF/35V/20%8x12MM/LOW ESR | OLIMEX_RLC-FP:CPOL-RM3.5mm_8.0x11.5mm_PTH | C18 |
| 1 | 22nF | Capacitor_SMD:C_1206_3216Metric | C42 |
| 1 | 24.9k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 24.9k 1% | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R1 |
| 1 | 2920L400_15MR | 2920L400_15MR:2920L07560MR | F1 |
| 1 | 30.1k 1% | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R20 |
| 1 | 30.1k/1%/R0402 | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R21 |
| 1 | 3V9 | TestPoint:TestPoint_Pad_D2.0mm | TP6 |
| 1 | 4.7 | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R13 |
| 1 | 4.7R/R0402 | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R14 |
| 1 | 42.9k | Resistor_SMD:R_0603_1608Metric | R53 |
| 1 | 470uF/16V/20%/LOW_ESR/RM3.5/8x12MM | OLIMEX_RLC-FP:CPOL-RM3.5mm_8.0x11.5mm_PTH | C19 |
| 1 | 5.23k/1%/R0402 | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R19 |
| 1 | 5033981892 | 5033981892:CONN_503398-1892_MOL | J5 |
| 1 | 532610971 | 532610971:CONN_532610001-SD_09_MOL | J12 |
| 1 | 63k 1% | Resistor_SMD:R_0603_1608Metric | R27 |
| 1 | 66.5R 1% 125mW 0805 | OLIMEX_RLC-FP:R_0805_5MIL_DWS | R3 |
| 1 | 74AHC1G08 | 74AHC1G08:SOT95P280X140-5N | U11 |
| 1 | 78k 1% | Resistor_SMD:R_0603_1608Metric | R29 |
| 1 | 7M-25.000MAAJ-T | 7M_25_000MAAJ_T:CRYSTAL_TXC_7M | CR2 |
| 1 | 878980204 | 87898-0204:87898-0204_MOL | J10 |
| 1 | ARJM11D7-114-AB-EW2 | ARJM11D7_114_AB_EW2:CONN_ARJM11D7-114-AB-EW2_ABR | J2 |
| 1 | B16B-PH-SM4-TB_LF__SN_ | B16B-PH-SM4-TB_LF__SN_:B16BPHSM4TBLFSN | J11 |
| 1 | B3B-XH-A | B3B-XH-A:JST_B3B-XH-A | J1 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | DFR0299 | DFR0299:MODULE_DFR0299 | U13 |
| 1 | DNP | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | ESP32-S3-WROOM-1-N16R8 | ESP32-S3-WROOM-1-N16R8:ESP32-S3-WROOM-1_EXP | U8 |
| 1 | KTA1170GVAE-TB | KTA1170GVAE-TB:SON65P400X400X80-9N | IC3 |
The 190 most common of 205 parts.
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Questions
How big is the LoiterGuardPcb PCB?
It measures 90 × 80 mm and has 6 copper layers, 1.6 mm thick.
What parts does the LoiterGuardPcb use?
205 parts, built around the DFR0299, ESP32-S3-WROOM-1-N16R8, SI4435DYPBF-HXY and 74AHC1G08GW. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the LoiterGuardPcb KiCad files?
From the AaronWiersma/LoiterGuardPcb repository on GitHub, at the commit this page was made from: the board is LoiterGuardPcb.kicad_pcb and its schematic ESP32-PoE2_Rev_B.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LoiterGuardPcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask AaronWiersma before reusing the design.