4 layers80 × 80 mm
Telemetry
chithigun23/ANUFS-Telemetry
To use custom hardware to measure parameters and dynamics of an ICE Formula SAE car.
159 parts
4 layers58.9 × 48.4 mm
An update to the Accelerator Pedal Position Plausibility Device to remain compliant with the use of a paddle shift system.
- Size
- 58.9 × 48.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 103
- Nets
- 83
- Pads
- 329
- Tracks, vias
- 620, 195
- Pours
- 324
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 4 Sep 2026
- Updated
- 28 Oct 2026
Overview
Apppd is an open-source printed circuit board by chithigun23, from the chithigun23/ANUFS-APPPD repository on GitHub. It is a 4-layer board of 58.9 × 48.4 mm with 103 parts on 83 nets, routed with 620 tracks and 195 vias.
It is built around the TCAN337D, AP2112K-3.3 and USBLC6-2SC6, with the AQ1005-01ETG, AO3400A and PMEG2010BER among its other parts. Its parts include 30 resistors, 27 capacitors, 13 diodes, 7 ICs and 4 connectors. It belongs with the audio and music boards and the STM32 boards of this library.
Main components
12
TCAN337D
SOIC-8-40℃~+125℃ 1Mbps 2.5mA 3V~3.6V 60mA CAN Transceiver SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
AQ1005-01ETG
SOD-882-40℃~+150℃ 100nA 10A@8/20us 15.6V 30pF 6V 8.5V IEC 61000-4-2 TVS SOD-882 ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
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
PMEG2010BER
SOD-123W1 Independent 1A 20V 450mV@1A 50A 50uA@20V SOD-123W Schottky Diodes ROHSNexperiaSchottky DiodesPMEG6010ER
SOD-123FL-55℃~+125℃ 1A 300uA@60V 40A 60V 700mV@1A Independent SOD-123FL Schottky Diodes ROHSShikuesSchottky Diodes
TS-1088-AR02016
SMD,4x3mm-30℃~+80℃ 1.6N 100,000 cycles 12V 2mm 3.9mm 3mm 50mA Black Round Button SMD(SMT) Tab SPST Surface Mount,Vertical Without Bracket SMD,4x3mm Tactile Switches ROHSXUNPUTactile Switches
BZT52-C15S-AU_R1_000A1
SOD-323-55℃~+150℃ 1 Independent 100nA@11V 14.25V~15.75V 15V 200mW 200Ω 30Ω SOD-323 Zener Diodes ROHSPANJIT InternationalZener DiodesPMV100EPAR
SOT-23-55℃~+175℃ 1 P-Channel 130mΩ@10V 17nC@10V 2.2A 26pF 3.2V 60V 616pF 8.3W P-Channel SOT-23 MOSFETs ROHSNexperiaMOSFETs
SMF16A
SOD-123FL-65℃~+150℃ 17V 19.7V 1uA 200W 26V 7.2A@10/1000us IEC 61000-4-2、IEC 61000-4-4 TVS Unidirectional SOD-123FL ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
TPS1
BGA-196(15x15)BGA-196(15x15) New Arrivals ROHSPhoenix ContactUncategorised
README
readme.mdANUFS APPPD
Accelerator pedal position (APPS) and throttle position (TPS) sensor interface for the ANUFS vehicle, with dual-redundant sensing, ignition/electronic-throttle-body kill-switch control, and CAN reporting. A single 8-pin harness connector carries power in, both raw sensor pairs, and the two kill lines out.
Architecture
- Power - the LV battery feed arrives on the shared harness connector, passes through an ideal-diode PFET (Zener-biased) for reverse-polarity/surge protection, and feeds
U6(LMR33610), which bucks it to 5V. That 5V is diode-ORed with USB-C VBUS onto a single fused node that only ever feedsU1(AP2112K-3.3) - the +3.3V rail is the only supply that leaves the power stage, reaching the MCU, CAN transceiver, both op-amps and the status LED. - Pedal & throttle sensing - the harness carries two raw accelerator-pedal signals (APPS1/APPS2) and two raw throttle-position signals (TPS1/TPS2), each individually clamped by an automotive
AQ1005-01ETGTVS array.U5andU7(TLV9062dual op-amps) buffer them with unity gain straight into the MCU's ADC inputs. - Compute -
U2, an STM32F072CBTx (Cortex-M0), is the hub, clocked from a 24MHz crystal (Y1). - Shutdown control - the MCU drives two low-side MOSFETs (
Q1for ignition,Q2for electronic throttle body) that pull the corresponding harness line to ground to trip the external kill relay. Each line has an inline LED (D3,D5) that lights while its kill switch is active, so the cut state is visible without a laptop. A separate GPIO-driven LED (LED1) gives a general board heartbeat/fault indication. - Comms - a
TCAN337transceiver (U4) puts pedal/throttle status and kill-line faults on the vehicle CAN bus viaJ4. - Debug & USB - USB-C (
J5, ESD-protected byU3) for bench debug/firmware and D+/D- to the MCU;J1(Conn_SWD) for programming.
The diagram above is a live SVG: dashed lines show active power/signal paths, and the small dots trace the flow through each domain (open assets/architecture.svg directly if your viewer doesn't animate it).
Repo contents
Parts
103| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C5, C6, C7, C8, C10, C12, C18, C26, C27, C28, C29, C30, C31 |
| 8 | 100k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R9, R10, R11, R15, R29, R30, R31, R32 |
| 7 | 150 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R7, R14, R19, R26, R27, R28, R33 |
| 5 | 1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C2, C3, C11, C17, C23 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R4, R5, R6 |
| 4 | 10uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C9, C15, C24 |
| 4 | 150k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R38, R39, R40, R41 |
| 4 | AQ1005-01ETG | apppd:AQ1005-01ETG | D4, D6, D9, D12 |
| 4 | MountingHole_Pad | H1, H2, H3, H4 | |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R21, R22 |
| 2 | 22uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C19, C20 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2, R3 |
| 2 | 8pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C13, C14 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | BPS | TestPoint:TestPoint_Keystone_5000-5004_Miniature | TP3, TP4 |
| 2 | LED | apppd:AP2012EC | D3, D5 |
| 2 | PMEG2010BER | Diode_SMD:Nexperia_CFP3_SOD-123W | D10, D11 |
| 2 | PMEG6010ER | Diode_SMD:Nexperia_CFP3_SOD-123W | D13, D14 |
| 2 | TLV9062xD | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5, U7 |
| 1 | +3V3 | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP7 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R8 |
| 1 | 220nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C16 |
| 1 | 24.9k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R12 |
| 1 | 2601-1102 | apppd:WAGO-2601-1102 | J4 |
| 1 | 300mA Polyfuse | Fuse:Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F1 |
| 1 | 470 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R20 |
| 1 | 8.2uH, 86m | Inductor_SMD:L_Vishay_IHLP-2525 | L1 |
| 1 | ABM8AIG-24.000MHz-8-2Z-T | apppd:ABM8AIG-24.000MHZ-8-2Z-T | Y1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | APPPD Connector | apppd:MOLEX_430450800 | J2 |
| 1 | BOOT0 | apppd:SW-SMD_L3.9-W3.0-P4.45 | SW2 |
| 1 | BZT52-C15S-AU_R1_000A1 | Diode_SMD:D_SOD-323_HandSoldering | D1 |
| 1 | CAN+ | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP5 |
| 1 | CAN- | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP6 |
| 1 | Conn_SWD | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | FerriteBead | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | FB1 |
| 1 | GND | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP9 |
| 1 | LMR33610ADDAR | apppd:LMR33610_HSOP8_SolidGND | U6 |
| 1 | NRST | apppd:SW-SMD_L3.9-W3.0-P4.45 | SW1 |
| 1 | PMV100EPA | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | SMF16A | apppd:SMF16A | D2 |
| 1 | STM32F072CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | TCAN337 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | TPS1 | TestPoint:TestPoint_Keystone_5000-5004_Miniature | TP1 |
| 1 | TPS2 | TestPoint:TestPoint_Keystone_5000-5004_Miniature | TP2 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | USB_C_Receptacle_USB2.0_16P | apppd:USB-C-SMD_TYPE-C-16PIN-2MD-073 | J5 |
| 1 | VIN_LDO | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP8 |
| 1 | XL-2012SURUGC | apppd:XL-2012SURUGC | LED1 |
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Questions
How big is the Apppd PCB?
It measures 58.9 × 48.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Apppd use?
103 parts, built around the TCAN337D, AP2112K-3.3, USBLC6-2SC6 and AQ1005-01ETG. 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 Apppd KiCad files?
From the chithigun23/ANUFS-APPPD repository on GitHub, at the commit this page was made from: the board is apppd.kicad_pcb and its schematic apppd.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Apppd design in my own project?
Its repository states no licence, so its author keeps all rights: ask chithigun23 before reusing the design.