2 layers30 × 61.3 mm
2 layers65 × 30 mm
PiMod Zero
isotope-engineering/PiMod-Zero39Raspberry Pi Zero RF Modulator Hat
- Size
- 65 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 47
- Nets
- 62
- Pads
- 147
- Tracks, vias
- 150, 8
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 2 Aug 2020
- Updated
- 2 Oct 2022
Overview
PiMod Zero is an open-source printed circuit board by isotope-engineering, from the isotope-engineering/PiMod-Zero repository on GitHub. It is a 2-layer board of 65 × 30 mm with 47 parts on 62 nets, routed with 150 tracks and 8 vias.
It is built around the NJM2519AM#. Its parts include 19 capacitors, 15 resistors, 3 connectors, 2 inductors and 1 IC.
Main components
1README
README.mdPiMod Zero
The PiMod Zero brings old tech back to life by allowing a Raspberry Pi Zero to display color or B&W video—and play audio—on vintage televisions. It provides a super-compact way to watch old movies, play retro games, present digital art, or navigate your operating system using any television that receives standard NTSC broadcasts on VHF channels 2 and 3 (55.25 MHz and 61.25 MHz).
In the past, you would have needed a cumbersome RF modulator box to adapt the HDMI signal from a Pi Zero. Now, with this convenient HAT snapped on top of your Pi Zero, no additional dongles are required. In fact, once the Pi is powered up, the only other cable you need is a piece of coax to connect the PiMod Zero to your TV.
Features
- Supports color and B&W video
- Supports audio
- Small form factor
- No external power supply
- Low power
- Open Source
Tech Specs
- Operating frequency: VHF channels 2 and 3 (55.25 MHz and 61.25 MHz)
- Broadcast format: NTSC
- Supply voltage: 5V
- RF output power: 0.005 mW
- Impedance: 75 Ω
- Power draw: 100 mW
Getting Started
Check out the Setup directory.
Parts
47| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | RPi_Hat:RPi_Hat_Mounting_Hole | , , , | |
| 4 | 0.1u | Capacitor_SMD:C_0805_2012Metric | C6, C7, C8, C13 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R11, R14 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C16, C18 |
| 2 | 150 | Resistor_SMD:R_0805_2012Metric | R12, R15 |
| 2 | 1n | Capacitor_SMD:C_0805_2012Metric | C3, C12 |
| 2 | 1u | Capacitor_SMD:C_0805_2012Metric | C9, C10 |
| 2 | 24p | Capacitor_SMD:C_0805_2012Metric | C4, C5 |
| 2 | 270 | Resistor_SMD:R_0805_2012Metric | R10, R13 |
| 2 | 33n | Capacitor_SMD:C_0805_2012Metric | C17, C19 |
| 2 | 470 | Resistor_SMD:R_0805_2012Metric | R1, R5 |
| 2 | 75 | Resistor_SMD:R_0805_2012Metric | R2, R4 |
| 1 | 100p | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 133n | KiCad-Library-master:Wurth_WE_Inductor_744918213 | L1 |
| 1 | 1u | Capacitor_SMD:C_1206_3216Metric | C11 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 2K | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 30K | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 360p | Capacitor_SMD:C_0805_2012Metric | C14 |
| 1 | 510 | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 68p | Capacitor_SMD:C_0805_2012Metric | C15 |
| 1 | 6p | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | Amphenol 531-40101 | rf_modulator:Amphenol-531-40101 | J3 |
| 1 | F88SM | rf_modulator:F88SM | X1 |
| 1 | LOGO | rf_modulator:modulator_art | G*** |
| 1 | LTRIM | rf_modulator:Coilcraft-Slot-7-Inductor | L2 |
| 1 | NJM2519A | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U1 |
| 1 | Pi Video | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | RPi_GPIO | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J1 |
| 1 | R_US | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW1 |
Questions
How big is the PiMod Zero PCB?
It measures 65 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PiMod Zero use?
47 parts, built around the NJM2519AM#. 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 PiMod Zero KiCad files?
From the isotope-engineering/PiMod-Zero repository on GitHub, at the commit this page was made from: the board is hardware/PiMod Zero.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the PiMod Zero design in my own project?
Its repository states no licence, so its author keeps all rights: ask isotope-engineering before reusing the design.
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