Rpitx lopafi
About the Rpitx lopafi PCB
Rpitx lopafi is an open source PCB design by F6ITU, published on GitHub under the MIT license. It is a 2-layer board measuring 65 × 56.5 mm, with 50 components from 11 distinct parts.
Other key parts include the TCA9534. By type, the board carries 22 capacitors, 9 connectors, 6 inductors, 6 resistors and 1 IC.
It belongs with the rf & radio and dev boards & breakouts designs in this gallery.
From the project
Low pass filter for the Raspberry-Pi based TX RF transceiver
Low pass filter for the Raspberry-Pi based TX RF transceiver
YAOHKP ! Yet another open hardware kicad project
LoPaFi is a "keep it simple stupid" version of a low pass filter with a Raspberry-Pi (or Up Board) form factor.
It is intended to fit on a RP Board running RpiTX by F5OEO
This filter is made of 5 different Cauer filters with rejection notches on F2 and F3, using T50 toroids and 1206 smd caps
Main components on the Rpitx lopafi
Rpitx lopafi bill of materials (BOM)
50 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TCA9534 | SOIC-16W_7.5x10.3mm_P1.27mm | U1 |
| 1 | RPi_GPIO | Samtec_HLE-120-02-XXX-DV-BE-XX-XX | J1 |
| 1 | Conn_01x01 | Pin_Header_Straight_2x20 | J2 |
| 1 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J4 |
| 3 | Conn_Coaxial | SMA_EDGE_NRW | J6, J8, J10 |
| 3 | Conn_Coaxial | SMA_PINS | J7, J9, J11 |
| 6 | EC2-5NU | Relay_DPDT_NEC_EC2 | RL1, RL2, RL3, RL4, RL5, RL6 |
| 6 | L_Small | T50_V_THT | L1, L2, L3, L4, L5, L6 |
| 21 | C_Small | C_1206_3216Metric_Pad1.24x1.80mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +13 |
| 1 | 100n | C_1206_3216Metric_Pad1.24x1.80mm_HandSolder | C12 |
| 6 | 4k7 | R_0805_2012Metric_Pad1.15x1.50mm_HandSolder | R1, R2, R3, R4, R5, R6 |
Rpitx lopafi design files
The KiCad project lives in the F6ITU/rpitx_lopafi repository on GitHub; these links point at the commit this page was built from.
- LayoutRPi_Hat.kicad_pcb
Rpitx lopafi: common questions
How big is the Rpitx lopafi PCB?
The Rpitx lopafi measures 65 × 56.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Rpitx lopafi?
50 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the Rpitx lopafi design files?
From the F6ITU/rpitx_lopafi repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Rpitx lopafi design in my own project?
Yes, under the terms of its MIT license, which F6ITU chose for the repository.
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