2 layers80 × 50 mm
Eink clock
kaini/eink-clock
Source code and schematics for a clock using the ED060SC4 E-Ink display
81 parts11MIT
2 layers30.4 × 65.4 mm
H1 Board 3
N5BRG/RPi_ControlA Raspberry Pi Hat which will produce a 6.0 or 6.5 voltage reference.
- Size
- 30.4 × 65.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 73
- Nets
- 38
- Pads
- 138
- Tracks, vias
- 80, 2
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 14 Jun 2026
- Updated
- 14 Jun 2026
Overview
H1 Board 3 is an open-source printed circuit board by N5BRG, from the N5BRG/RPi_Control repository on GitHub. It is a 2-layer board of 30.4 × 65.4 mm with 73 parts on 38 nets, routed with 80 tracks and 2 vias.
It is built around the TPS61041DBV and MBR0530. Its parts include 5 resistors, 3 capacitors, 1 IC, 1 diode and 1 transistor.
Main components
2
TPS61041DBV
SOT-23-5-40℃~+125℃@(TJ) 1 1.8V~6V 1MHz 250mA 28V 28uA Adjustable Boost Boost Built-in No SOT-23-5 DC-DC Converters ROHSTexas InstrumentsLED Drivers
MBR0530
SOD-1231 Independent 30V 5.5A 500mA 550mV@500mA 80uA@30V SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
README
README.mdRPi_Control
Copyright (c) 2026 Robert S. Stricklin Jr
This hardware design is licensed under the CERN Open Hardware Licence Version 2 - Permissive (CERN-OHL-P-2.0).
You may obtain a copy of the license in the LICENSE file included with this repository.
Overview
This design is a Raspberry Pi Hat board which can be used to genrate 6.0 Volt or 6.5 volt output voltages under program control. The board gets it power from the host Raspberry Pi.
The goal of this design is to provide the control voltage required to operate a remote H1 control PCB.
The voltages produced are generated by an onboard switching boost regulator. This is not ideal to minimize noise on the power line for the radio astronomy preamp. It does work as a simple way to test circuits. There is another repository with a which includes a low noise power supply called H1_Control_and_Power. That board includes a low noise power supply which may prove adaquite for the a sensitive receiver. The user would not want to feed the voltage down a common RF cable because switching noise would be added to the RF signals. There is a prototying area on the board. It would be possible to use external well regulated linear voltage supplies switched by the Raspberry pi by adding an additional switching circuit.
KiCad Version 10 was used to create the files in this repository.
Amateur Radio Astronomy
This design was created to support the educational and scientific goals of the Society of Amateur Radio Astronomers (SARA). Additional information about SARA can be found at:
https://www.radio-astronomy.org/
Many of the ideas incorporated into this design were discussed during SARA's regular monthly Zoom meetings and educational activities.
If you enjoy physics, astronomy, radio astronomy, electronics, and scientific experimentation, please consider joining SARA (https://www.radio-astronomy.org) and participating in their programs. SARA is an especially good opportunity for students and young people who are interested in science, engineering, and technology. Most participation is conducted online through video conference meetings.
Acknowledgements
If you use KiCad, please consider making a donation to the project to help support the continuing development and distribution of this outstanding open-source electronic design software.
Parts
73| Qty | Value | Footprint | References |
|---|---|---|---|
| 54 | , , , , , , , , , , , , , , , +38 | ||
| 3 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3 |
| 2 | 100K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18, R22 |
| 2 | TestPoint | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | TP1, TP2 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric | C17 |
| 1 | 10u | Inductor_SMD:L_1008_2520Metric | L2 |
| 1 | 20K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R16 |
| 1 | 22K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
| 1 | 2N7002 | Package_TO_SOT_SMD:TSOT-23 | Q2 |
| 1 | 4.7u | Capacitor_SMD:C_1206_3216Metric | C19 |
| 1 | 4.7u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C18 |
| 1 | 453K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17 |
| 1 | MBR0530 | Diode_SMD:D_SOD-123 | D2 |
| 1 | Raspberry_Pi_4 | Module:Raspberry_Pi_Zero_Socketed_THT_FaceDown_MountingHoles | J3 |
| 1 | TPS61041DBV | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | TestPoint_2Pole | Bob:TestPoint_Bridge_Pitch2.54mm_Drill1.0mm | TP12 |
Questions
How big is the H1 Board 3 PCB?
It measures 30.4 × 65.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the H1 Board 3 use?
73 parts, built around the TPS61041DBV and MBR0530. 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 H1 Board 3 KiCad files?
From the N5BRG/RPi_Control repository on GitHub, at the commit this page was made from: the board is H1_Board_3.kicad_pcb and its schematic H1_Board_3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the H1 Board 3 design in my own project?
Its repository states no licence, so its author keeps all rights: ask N5BRG before reusing the design.
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