2 layers354.5 × 132.5 mm
Panels001
jibonaronno/documentsA
It is required to change settings using SCLManager.exe when required for new setup.
308 parts4
2 layers80 × 50 mm
Aegis imu carrier
krishharma/aegis-mtstdpInteger STDP continual-learning core for FPGA (Python golden model + Verilog). Tiny-net co-sim. IMU/power carrier PCB. Tables are simulator results. Not an ASIC.
- Size
- 80 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 11
- Pads
- 78
- Tracks, vias
- 78, 10
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 10 Sep 2026
- Updated
- 16 Sep 2026
Overview
Aegis imu carrier is an open-source printed circuit board by krishharma, from the krishharma/aegis-mtstdp repository on GitHub. It is a 2-layer board of 80 × 50 mm with 27 parts on 11 nets, routed with 78 tracks and 10 vias.
It is built around the INA219AID, AP2112K-3.3 and M2.5, with the SS14 among its other parts. Its parts include 5 resistors, 4 capacitors, 4 connectors, 3 diodes and 2 ICs. It belongs with the fPGA and programmable logic and sensors and measurement boards and the FPGA and CPLD boards of this library.
Main components
4
INA219AID
SOIC-8-40℃~+125℃ 0.1uV/℃ 0V~26V 1 10uV 120dB 20nA 3V~5.5V 700uA Bidirectional detection、Zero drift / auto-zero、Input filter、Power monitoring、Digital output interface ±26V SOIC-8 Current Sense Amplifiers ROHSTexas InstrumentsCurrent Sense Amplifiers
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorisedM2.5
-0.45mm 2.5mm 2mm 5mm DIN934 Hex M2.5X0.45 Nickel plated Silver white - Hexagonal nutsShuntianHex Nut
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
pcb/README.mdAegis IMU / power carrier (KiCad 10)
Open aegis_imu_carrier.kicad_pro. This is a 2-layer FPGA harness, not an ASIC.
Regenerate (source of truth):
make kicad
# or:
python3 pcb/gen_kicad.py
python3 pcb/run_kicad.pyrun_kicad.py upgrades the files for KiCad 10, runs ERC/DRC, fills GND zones, and writes Gerbers.
| File | What it is |
|---|---|
aegis_imu_carrier.kicad_sch | Wired schematic (power OR, LDO, shunt/INA219, I2C, connectors) |
aegis_imu_carrier.kicad_pcb | 80 × 50 mm board, footprints, traces, filled GND zones |
bom.csv | Fab / buy list |
gerbers/ | Gerber + Excellon drill + centroid (after make kicad) |
reports/ | ERC/DRC JSON, schematic PDF, board SVG |
preview.png | Layout sketch (not a Gerber) |
What is on the board
- J1 Digilent PMOD 2×6 → PYNQ-Z2 / Arty JA
- Pin 1 UART (FPGA
Y18) — not used by the IMU; leave as a probe - Pin 2 SCL (
Y19) Pin 3 SDA (Y16) - Pin 5 / 11 GND
- Pins 6 / 12 FPGA 3V3 unconnected so the onboard LDO and the FPGA 3V3 do not fight
- Pin 1 UART (FPGA
- J2 GY-521 (MPU-6050) 1×8: VCC GND SCL SDA XDA XCL AD0 INT. AD0 strapped to GND → I2C
0x68 - JUSB Micro-B + J4 5 V header, Schottky-ORed with J3 1S LiPo into
VSYS - U1 AP2112K-3.3 (SOT-23-5) →
+3V3_REG→ R5 10 mΩ →+3V3load rail - U2 INA219 (SOIC-8) high-side on that shunt, A0=A1=GND →
0x40 - 4.7 kΩ I2C pull-ups, 3V3 LED, decoupling, four M2.5 holes
J3 is discharge only. There is no charger. Do not feed USB 5 V into a LiPo.
INA219 current is board-level. Do not quote it as ASIC milliwatts.
Fab (JLCPCB / PCBWay)
make kicad fills zones and writes pcb/gerbers/. Stackup: FR4 1.6 mm, 2-layer, 1 oz, HASL or ENIG, 0.25 mm min track, vias 0.8 / 0.4 mm.
Hand-solder is intended: 0402 pull-ups are the smallest parts; 0805 / SOIC-8 / SOT-23-5 are student-friendly.
Bring-up
- Power USB 5 V (or J4). LED D1 on.
+3V3≈ 3.3 V at J2 pin 1. - PMOD cable JA → J1 (pin 1 marked).
- Plug GY-521 onto J2. I2C scan:
0x68(IMU),0x40(INA219). - Load
mtstdp_fpga_top. LEDs = class; UART on JA pin 1 = ASCII'0'/'1'.
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | M2.5 | MountingHole:MountingHole_2.5mm | H1, H2, H3, H4 |
| 2 | 100n | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | SS14 | Diode_SMD:D_SOD-123 | D2, D3 |
| 1 | +3V3 | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 10m | Resistor_SMD:R_1206_3216Metric | R5 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 5V AUX | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | GREEN | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | GY-521 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | INA219AID | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LiPo JST-PH (discharge only) | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J3 |
| 1 | PMOD JA | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J1 |
| 1 | SCL | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | SDA | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | USB Micro-B | Connector_USB:USB_Micro-B_Molex_105017-0001 | JUSB |
Similar boards
- 4 layers76 × 50 mm
Wigglecam
jadenrhee/wigglecam-controller
RP2040 co-processor board for a 4-lens wigglegram camera: constant-current flash, controls, battery telemetry, Pi 5 I2C interface. 4-layer, DRC-clean, fab-ready.
105 parts - 2 layers61.4 × 74.1 mm
Robot Trash Collector V1.0
Lukikato101/AMR_Robot-Trash-Collector-Simple-PCB
Autonomous trash collector robot simulation with AI object detection and monitoring dashboard.
45 parts - 4 layers88 × 80 mm
Neuronic
kamenzh/neuronics-eeg
A budget-focused EEG brain–computer interface project exploring a custom 8-channel acquisition PCB, ESP32 wireless streaming, and PC-based signal processing and CNN classification for brain-controlled interfaces.
95 parts2MIT - 2 layers52 × 30 mm
Coppertone buffer
seunghyukchoe/copper-mcp
Local-first PCB automation for KiCad with safe MCP tools and deterministic autorouting research.
26 parts2Apache-2.0 - 4 layers70 × 45 mm
Flight computer
Ben-Blair/Rocket-Build
Senior capstone project: demonstrate closed-loop lateral guidance of a high power rocket using forward canards, and handle the canard-wake-on-aft-fin interference problem correctly.
85 parts - 2 layers140 × 135 mm
Compoudrier Bas
favsidv/createch_compoudrier
Ce projet consiste à concevoir, sous KiCad, les cartes électroniques d'un Compoudrier inspiré de Totally Spies. L'objectif est de réunir un écran principal, des commandes de navigation et une horloge dans un objet…
90 parts - 2 layers58 × 40 mm
G29 flap xiao
fdebrus/g29-exhaust-flap-controller
Open-source controller for the exhaust flap of the BMW Z4 G29 M40i: open the flap on demand (even in Comfort mode) while keeping full factory behaviour the rest of the time.
36 partsMIT
Questions
How big is the Aegis imu carrier PCB?
It measures 80 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Aegis imu carrier use?
27 parts, built around the INA219AID, AP2112K-3.3, M2.5 and SS14. 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 Aegis imu carrier KiCad files?
From the krishharma/aegis-mtstdp repository on GitHub, at the commit this page was made from: the board is pcb/aegis_imu_carrier.kicad_pcb and its schematic pcb/aegis_imu_carrier.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Aegis imu carrier design in my own project?
Its repository states no licence, so its author keeps all rights: ask krishharma before reusing the design.