2 layers65 × 56 mm
RPi Hat
omc8db/DigitalVoice
An open source codec2 based handheld digital radio for VHF/UHF amateur bands
76 parts1Apache-2.0
2 layers90 × 39.1 mm
PWRBRD
omc8db/DigitalVoice1An open source codec2 based handheld digital radio for VHF/UHF amateur bands
- Size
- 90 × 39.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 61
- Nets
- 58
- Pads
- 209
- Tracks, vias
- 397, 20
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 12 Oct 2016
- Updated
- 8 May 2017
Overview
PWRBRD is an open-source printed circuit board by omc8db, from the omc8db/DigitalVoice repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 90 × 39.1 mm with 61 parts on 58 nets, routed with 397 tracks and 20 vias.
It is built around the LM393. Its parts include 24 resistors, 15 capacitors, 7 diodes, 5 ICs and 3 connectors.
Main components
1README
hardware/PiHat_Final/README.md% RPi B+ Hat
Raspberry Pi B+ Hat
Expansion Board
This is a project template for a Raspberry Pi B+ Hat.
This base project includes a PCB edge defined according to this specification. Both a thru-hole and a surface mount connector are provided, along with a different PCB edge for each. Just keep the PCB edge and connector type that you're using for your design and delete the others.
The component footprints used in this template are here.
The board outline looks like this:
Using the Template
To use the Raspberry Pi Hat template with the through-hole connector, do the following:
- Open the schematic. Remove the SMD connector, J1.
- Generate the schematic netlist.
- Generate the .cmp file. (The J2 connector will be the only component in it.)
- Open the PCB. Hover your mouse over the connector and hit e to edit it. Select the J1 SMD connector. In the Move and Place section of the Footprint Properties window, select the Free radio button. Then click OK. The SMD connector should now be unlocked so it can be removed.
- Read in the netlist from the schematic. In the Extra Footprints section of the Netlist dialog window, select the Delete radio button. Then click Read Current Netlist. The J1 SMD connector should disappear. Then click Close.
- Finally, delete the upper two arcs and the edge of the board outline.
To use the Raspberry Pi Hat template with the SMD connector, do the following:
- Open the schematic. Remove the through-hole connector, J2.
- Generate the schematic netlist.
- Generate the .cmp file. (The J1 connector will be the only component in it.)
- Open the PCB. Hover your mouse over the connector and hit e to edit it. Select the J2 through-hole connector. In the Move and Place section of the Footprint Properties window, select the Free radio button. Then click OK. The through-hole connector should now be unlocked so it can be removed.
- Read in the netlist from the schematic. In the Extra Footprints section of the Netlist dialog window, select the Delete radio button. Then click Read Current Netlist. The J2 through-hole connector should disappear. Then click Close.
- Finally, delete the lower two arcs and the edge of the board outline.
(c)2015 XESS Corp.
Parts
61| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | R | Resistors_SMD:R_0603 | R1, R2, R3, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R18 |
| 6 | 22uF | Capacitors_SMD:CP_Elec_5x5.3 | C8, C9, C10, C12, C13, C15 |
| 5 | C | Capacitors_SMD:C_0603 | C1, C3, C4, C5, C6 |
| 3 | LED | LEDs:LED_0603 | D2, D3, D4 |
| 2 | 10uF | Capacitors_SMD:C_0603 | C7, C14 |
| 2 | 1K | Resistors_SMD:R_0603 | R23, R24 |
| 1 | 100m | Resistors_SMD:R_0603 | R20 |
| 1 | 10M | Resistors_SMD:R_0603 | R17 |
| 1 | 10k | Resistors_SMD:R_0603 | R19 |
| 1 | 1M | Resistors_SMD:R_0603 | R16 |
| 1 | 1k | Resistors_SMD:R_0603 | R4 |
| 1 | 1uH | Resistors_SMD:R_0805 | L5 |
| 1 | 27pF | Capacitors_SMD:C_0603 | C2 |
| 1 | 2K4 | Resistors_SMD:R_0603 | R22 |
| 1 | 4.7uF | Resistors_SMD:R_0805 | L1 |
| 1 | 470 | Resistors_SMD:R_0603 | R15 |
| 1 | 4mH | Choke_Axial_ThroughHole:Choke_Horizontal_RM10mm | L9 |
| 1 | 50nF | Capacitors_SMD:C_0603 | C11 |
| 1 | 51K | Resistors_SMD:R_0603 | R21 |
| 1 | 5V | Resistors_SMD:R_0603 | D5 |
| 1 | ACT2803 | Housings_DFN_QFN:QFN-40-1EP_5x5mm_Pitch0.4mm | U1 |
| 1 | CONN_01X03 | Pin_Headers:Pin_Header_Straight_1x03_Pitch1.27mm | P2 |
| 1 | CONN_01X04 | Pin_Headers:Pin_Header_Straight_1x04 | P3 |
| 1 | D | Resistors_SMD:R_0603 | D1 |
| 1 | D_Schottky | Resistors_SMD:R_0603 | D7 |
| 1 | LED | Resistors_SMD:R_0805 | D6 |
| 1 | LM393 | SMD_Packages:SOIC-8-N | U2 |
| 1 | Q_NPN_BCE | TO_SOT_Packages_SMD:SOT-23 | Q2 |
| 1 | Q_PMOS_GDS | TO_SOT_Packages_SMD:SOT-23 | Q1 |
| 1 | SC189 | TO_SOT_Packages_SMD:SOT-23-5 | U4 |
| 1 | SW_PUSH | Buttons_Switches_ThroughHole:SW_PUSH_6mm | SW1 |
| 1 | THERMISTOR | Discret:R1 | TH1 |
| 1 | TS30012 | Housings_DFN_QFN:QFN-16-1EP_3x3mm_Pitch0.5mm | U3 |
| 1 | USB_B | Connect:USB_Micro-B | P1 |
| 1 | ZXSC420 | TO_SOT_Packages_SMD:SOT-23-6 | U5 |
Questions
How big is the PWRBRD PCB?
It measures 90 × 39.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PWRBRD use?
61 parts, built around the LM393. 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 PWRBRD KiCad files?
From the omc8db/DigitalVoice repository on GitHub, at the commit this page was made from: the board is hardware/PWRBRD/PWRBRD.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the PWRBRD design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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