2 layers55.9 × 40.6 mm
2 layers104 × 73 mm
Ardf tx
hmatuschek/ardf-tx5Schematics and firmware for simple ARDF transmitter.
- Size
- 104 × 73 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 55
- Nets
- 28
- Pads
- 169
- Tracks, vias
- 114, 115
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 31 Jul 2020
- Updated
- 4 Nov 2026
Overview
Ardf tx is an open-source printed circuit board by hmatuschek, from the hmatuschek/ardf-tx repository on GitHub. It is a 2-layer board of 104 × 73 mm with 55 parts on 28 nets, routed with 114 tracks and 115 vias.
It is built around the ATTINY45-20PU, MC34063AP and L78L05CZ, with the BS170 and TIP41 among its other parts. Its parts include 16 capacitors, 10 resistors, 5 transistors, 4 diodes and 4 inductors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATTINY45-20PU
DIP-8-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 256Byte 256Byte 4KB 6 8 Bit AVR Built-in FLASH DIP-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)MC34063AP
PDIP-80℃~+70℃@(TA) 1 1.25V~40V 1.5A 100kHz 3V~40V Adjustable Boost、Buck、Inverting Buck、Boost Built-in No PDIP-8 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
L78L05CZ
TO-920℃~+125℃ 100mA 30V 40uV 49dB@(120Hz) 5V Fixed Over Temperature Protection、Short Circuit Protection Positive TO-92 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsPower Management - Specialized
BS170
TO-92-55℃~+150℃ 1 N-channel 1.2Ω@10V 17pF 2.1V 24pF 500mA 60V 7pF 830mW N-Channel TO-92 MOSFETs ROHSonsemiMOSFETs
TIP41
TO-220TO-220 Bipolar (BJT) ROHSTFBipolar Transistors - BJT
Parts
55| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | BS170 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1, Q4, Q5, Q6 |
| 3 | 100n | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C6, C9, C12 |
| 3 | GND | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3 |
| 3 | LED | LED_THT:LED_D3.0mm | D1, D2, D3 |
| 2 | 1.5k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R9, R10 |
| 1 | 0.2 | Resistor_SMD:R_2512_6332Metric_Pad1.52x3.35mm_HandSolder | R2 |
| 1 | 1.2n | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C10 |
| 1 | 1.5k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R11 |
| 1 | 1.8u | DM3MAT:L_Toroid_Vertical_L10.0mm_W5.0mm_P5.08mm_Diagonal | L2 |
| 1 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 100u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C4 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8 |
| 1 | 14.31818MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | 150p | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C8 |
| 1 | 180 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R5 |
| 1 | 1N5819 | Diode_THT:D_DO-41_SOD81_P2.54mm_Vertical_AnodeUp | D4 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R3 |
| 1 | 2 x 10 @ FT37-43 | DM3MAT:Transformer_1P_1S_Toroid_Vertical_D10.5mm_Amidon-T37 | T1 |
| 1 | 2.2u | DM3MAT:L_Toroid_Vertical_L10.0mm_W5.0mm_P5.08mm_Diagonal | L1 |
| 1 | 20uH | Inductor_THT:L_Radial_D12.5mm_P7.00mm_Fastron_09HCP | L4 |
| 1 | 22 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R6 |
| 1 | 220n | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C3 |
| 1 | 220u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C15 |
| 1 | 22p | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1 |
| 1 | 22p | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C2 |
| 1 | 2A Träge | DM3MAT:Fuseholder_Cylinder-5x20mm_ESKA_Clip_Horizontal_Open | F1 |
| 1 | 3.6V | Battery:BatteryHolder_TruPower_BH-331P_3xAA | BT1 |
| 1 | 390p | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C11 |
| 1 | 42u | DM3MAT:L_Toroid_Vertical_L10.0mm_W5.0mm_P5.08mm_Diagonal | L3 |
| 1 | 470p | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C16 |
| 1 | 470u | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C17 |
| 1 | 47p | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C5 |
| 1 | 560p | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C13 |
| 1 | 6.2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R4 |
| 1 | 820p | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C7 |
| 1 | ANT | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H4 |
| 1 | ATtiny45-20PU | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | EXT | DM3MAT:SW_Reed_Meder_MK6-5_P12.7 | SW3 |
| 1 | L78L05 | Package_TO_SOT_THT:TO-92_Inline_Wide | U2 |
| 1 | MC34063AP | Package_DIP:DIP-8_W7.62mm | U3 |
| 1 | ON | DM3MAT:SW_Lever_RND-210-004371 | SW2 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | Start/Stop | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW1 |
| 1 | TIP41 | Package_TO_SOT_THT:TO-220-3_Vertical | Q2 |
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Questions
How big is the Ardf tx PCB?
It measures 104 × 73 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ardf tx use?
55 parts, built around the ATTINY45-20PU, MC34063AP, L78L05CZ and BS170. 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 Ardf tx KiCad files?
From the hmatuschek/ardf-tx repository on GitHub, at the commit this page was made from: the board is TX/TX.kicad_pcb and its schematic TX/tiny.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ardf tx design in my own project?
Its repository states no licence, so its author keeps all rights: ask hmatuschek before reusing the design.