2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers78.7 × 81.3 mm
CluePCB
M2I-HABET/HAR1High Altitude Report, also named after the Norse god HÁR whose name also litteraly means "high" and is one of the three gods of knowledge. HAR is our main onboard computer that oversees tracking, sensor data and any control needed.
- Size
- 78.7 × 81.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 35
- Pads
- 57
- Tracks, vias
- 39, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 3 Jul 2021
- Updated
- 6 Jul 2026
Overview
CluePCB is an open-source printed circuit board by M2I-HABET, from the M2I-HABET/HAR repository on GitHub. It is a 2-layer board of 78.7 × 81.3 mm with 11 parts on 35 nets, routed with 39 tracks and 0 vias.
Its parts include 5 ICs and 2 resistors.
README
README.mdHigh Altitude Reporter (HAR)
HAR is named after the Norse god HÁR, the Norse god of knowledge whose name means "high." It seemed fitting then that we name our main onboard computer HAR. HAR is used to gather data, store data, transmit data, and perform other housekeeping needs to keep the spacecraft functional through all stages of flight.
Electrical Specification
HAR is the primary avionics system for all HABET missions. It provides a processing system, sensors, and communication functions to support all spacecraft missions.
Electrical Overview
For all HABET missions, a few key things are needed to carry out a successful mission. To be successful, we need to have a system that allows us to track the spacecraft, communicate with the spacecraft, process sensor data, and manage power.
Generally speaking, Power and some sort of data management is usually the bare minimum needed for most payloads. However, many payloads either benefit or require the additional items listed. Therefore, Athena was designed with all of the items listed. As of the date of this document, the following features are currently provided.
| Feature | Specification |
|---|---|
| Power | |
| LoRa Data link | 115,200 bps |
| Data Storage | Up to 2GB per payload |
| Data downlink | 1 packet every 4 seconds or higher. 1 packet must be under 256 bytes |
| Data uplink | 1 packet every 10 seconds or higher, 1 packet must be under 256 bytes |
| GPS Data | NMEA of the GPGGA string is available at 9600 bps |
| Video monitoring | Video stored onboard at 720p |
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | M3, M3, M3, M3 |
| 1 | 2.2k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | 3.3k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2 |
| 1 | Drag3V | HABET_Lib:Dragon3V | U5 |
| 1 | Dragontail | HABET_Lib:Dragontail | U3 |
| 1 | GPS | HABET_Lib:GPS | U2 |
| 1 | LoRa | HABET_Lib:LoRa | U1 |
| 1 | PowerBoost500 | HABET_Lib:Powerboost500 | U4 |
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Questions
How big is the CluePCB PCB?
It measures 78.7 × 81.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CluePCB use?
11 parts. 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 CluePCB KiCad files?
From the M2I-HABET/HAR repository on GitHub, at the commit this page was made from: the board is pcb/CluePCB.kicad_pcb and its schematic pcb/CluePCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CluePCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask M2I-HABET before reusing the design.