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FlightRecorder
Ash1of1/FlightRecorderFR-1 is a standalone rocket telemetry module. It samples pressure/altitude, temperature, acceleration, and gyro data, and serves a live dashboard over its own WiFi network — no internet, router, or app install required.
- Size
- 35 × 70 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 29
- Pads
- 111
- Tracks, vias
- 209, 16
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Sep 2026
- Updated
- 3 Sep 2026
Overview
FlightRecorder is an open-source printed circuit board by Ash1of1, from the Ash1of1/FlightRecorder repository on GitHub. It is a 2-layer board of 35 × 70 mm with 37 parts on 29 nets, routed with 209 tracks and 16 vias.
It is built around the ZD25WQ80CTIGT, BMP280 and ME6211A33PG-N, with the TP4056-MS, HX-XH2.54-2PZZ and QMB-09B-03 among its other parts. Its parts include 13 resistors, 8 capacitors, 4 ICs, 3 diodes and 1 transistor. It belongs with the ESP32 boards of this library.
Main components
6
ZD25WQ80CTIGT
SOP-8NOR FLASHZetta
BMP280
LGA-8(2x2.5)-40℃~+85℃ 0.12hpa 1.5pa/K 1.71V~3.6V 1hpa 300nA 30Kpa~1.1bar I2C、SPI Integrated ADC and digital interface、On-chip calibration and non-volatile storage、Standby mode、On-chip temperature output LGA-8(2x2.5) Pressure Sensors ROHSBoschPressure Sensors
ME6211A33PG-N
SOT-89-40℃~+150℃@(Ta) 1 120mV@(100mA) 3.3V 30uA 500mA 50uVrms 6V 70dB@(1kHz) Fixed Over Current Protection、Enable、Short Circuit Protection Positive SOT-89 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMICRONEVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
TP4056-MS
SOP-8-EP-40℃~+85℃ 1 1A 4.2V 4.2V~5.5V 70uA Charging IC Constant current charging、Constant voltage charging、Trickle charging、Automatic recharge、Charge termination、Programmable charging current、Soft-start、Under-voltage lockout Lithium Battery Support SOP-8-EP Battery Management ROHSMSKSEMIBattery Management
HX-XH2.54-2PZZ
插件,P=2.54mm-25℃~+85℃ 1 1x2P 2 2.54mm 250V 2P 3A Brass PA66 Through Hole Tin UL94V-0 White XH Plugin,P=2.54mm Wire To Board Connector ROHShanxiaWire To Board Connector
QMB-09B-03
插件,D=9mm-20℃~+70℃ 2.7kHz 2V~5V 3V 5.7mm 50mA 85dB 9mm Electromagnetic Passive (Externally Driven) 插件,D=9mm Buzzers ROHSJiangsu Huaneng ElecBuzzers
README
README.mdFlightRecorder (FR-1) — Board Usage Guide
FR-1 is a standalone rocket telemetry module. It samples pressure/altitude, temperature, acceleration, and gyro data, and serves a live dashboard over its own WiFi network — no internet, router, or app install required.
Power on
Apply power to the board. On boot it:
- Initializes the BMP280 (pressure/temperature) and MPU6500 (accel/gyro) sensors.
- Starts sampling at 10 Hz.
- Starts a WiFi access point (SoftAP) — the board is the network.
- Starts the onboard web server and dashboard.
Connect
-
On your phone or laptop, open WiFi settings and join the network:
- SSID:
FlightRecorder-XXXX(theXXXXsuffix is derived from the board's MAC address, so each board has its own stable, unique name — useful when multiple units are powered up in the same room) - Password:
blackbox1
- SSID:
-
Open a browser and go to:
text http://192.168.4.1/This address is fixed — the board is always the gateway/DHCP server for its own AP, so it's the same for every board and every session.
Dashboard
The page connects automatically over a WebSocket and updates live as new samples arrive:
| Field | Description |
|---|---|
| Altitude (m) | Relative to the ground reference captured at boot |
| Pressure (Pa) | Raw barometric pressure |
| Temperature (°C) | BMP280 die temperature (not ambient air) |
| Sample rate (Hz) | Live samples/sec being pushed to the dashboard |
| Accel X/Y/Z (m/s²) | From the MPU6500, ±4 g range |
| Gyro X/Y/Z (°/s) | From the MPU6500, ±500 dps range |
The LINK indicator and status badge reflect whether the WebSocket connection to the board is currently live.
Notes / limitations
- Only one WiFi client can meaningfully view live data at a time in practice, though the AP allows up to 4 connections.
- The board has no internet access itself and doesn't need one — connecting
your device to
FlightRecorder-XXXXwill likely disable your device's own internet access for the duration (no route out), which is expected. - On-board flash logging (for full-flight CSV export) is planned but not yet exposed over HTTP.
- If the dashboard doesn't load, confirm you're joined to the
FlightRecorder-XXXXnetwork (not your home WiFi) and retryhttp://192.168.4.1/.
Building / flashing firmware
This is an ESP-IDF project. Standard workflow:
idf.py build
idf.py -p PORT flash monitorSee main/app_main.c for the startup sequence and components/flight_common/include/app_config.h
for pin mappings and other board configuration.
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R5, R12 |
| 4 | 10u | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C3, C5, C7, C8 |
| 4 | Mounting | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R7, R8 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R6 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10 |
| 2 | 1u | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C4, C6 |
| 2 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2 |
| 1 | 100n | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 100nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C2 |
| 1 | 1N4148_C258182 | lcsc_footprints:C258182_DO-35_BD2_0-L4_0-P8_00-D0_5-FD | D3 |
| 1 | 2.4k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R13 |
| 1 | 2N3904_C2874602 | lcsc_footprints:C2874602_TO-92-3_L4_6-W3_6-P1_27-L_1 | Q1 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R11 |
| 1 | BMP280 | IEEE_lib:BPM280_Module | BMP1 |
| 1 | ESP32 S3 Super Mini | Project:ESP32-S3-SuperMini | U1 |
| 1 | HX-XH2.54-2PZZ | lcsc_footprints:C42391660_CONN-TH_2P-P2_50_HX-2_54MM-2P-ZZ-MS | CN1 |
| 1 | ME6211A33PG-N | lcsc_footprints:C236673_SOT-89_L4_5-W2_5-P1_50-LS4_2-BR | U5 |
| 1 | MPU6500 | IEEE_lib:MPU6500 | MPU1 |
| 1 | QMB-09B-03 | lcsc_footprints:C96256_BUZ-TH_BD9_0-P4_00-D0_6-FD | BUZZER1 |
| 1 | TP4056-MS | lcsc_footprints:C7473158_SOP-8_L4_9-W3_9-P1_27-LS6_0-TL-EP | U4 |
| 1 | ZD25WQ80CTIGT | lcsc_footprints:C7525143_SOP-8_L4_9-W3_9-P1_27-LS6_0-BL | U2 |
Questions
How big is the FlightRecorder PCB?
It measures 35 × 70 mm and has 2 copper layers, 1.6 mm thick.
What parts does the FlightRecorder use?
37 parts, built around the ZD25WQ80CTIGT, BMP280, ME6211A33PG-N and TP4056-MS. 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 FlightRecorder KiCad files?
From the Ash1of1/FlightRecorder repository on GitHub, at the commit this page was made from: the board is flight_recorder/flight_recorder/.history/flight_recorder.kicad_pcb and its schematic flight_recorder/flight_recorder/.history/flight_recorder.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FlightRecorder design in my own project?
Its repository states no licence, so its author keeps all rights: ask Ash1of1 before reusing the design.
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