2 layers104 × 73 mm
2 layers62 × 42 mm
Schematics and firmware for simple ARDF transmitter.
- Size
- 62 × 42 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 24
- Pads
- 101
- Tracks, vias
- 175, 39
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Jul 2020
- Updated
- 4 Nov 2026
Overview
Tiny is an open-source printed circuit board by hmatuschek, from the hmatuschek/ardf-tx repository on GitHub. It is a 2-layer board of 62 × 42 mm with 29 parts on 24 nets, routed with 175 tracks and 39 vias.
It is built around the ATTINY84-20SSU and 74HC00D. Its parts include 8 capacitors, 7 resistors, 3 ICs, 2 switches and 2 inductors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATTINY84-20SSU
SOIC-14-40℃~+85℃ 10bit 12 2.7V~5.5V 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH SOIC-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)74HC00D
SOP-14-40℃~+125℃ 1.5V、3.15V、4.2V 1.9V、3.7V、5.9V 100mV、400mV、400mV 2 2V~6V 4 40uA 5.2mA 5.2mA 500mV~1.8V 74HC Series 7ns@6V,50pF NAND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3, C9 |
| 2 | 1.5k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R6 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R7 |
| 2 | 33p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7 |
| 1 | 1.2V | Battery:BatteryHolder_Keystone_2466_1xAAA | BT1 |
| 1 | 100u | Inductor_THT:L_Axial_L6.6mm_D2.7mm_P10.16mm_Horizontal_Vishay_IM-2 | L2 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C5 |
| 1 | 15p | Capacitor_SMD:C_Trimmer_Murata_TZW4 | C4 |
| 1 | 2.2M | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 3.579545 | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | 309k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 4.7u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | 4.7u | Inductor_SMD:L_1206_3216Metric_Pad1.42x1.75mm_HandSolder | L1 |
| 1 | 74HC00 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | 967k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | ANT | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1 |
| 1 | ATtiny84-20SS | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U2 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1 |
| 1 | MCP1640x-xCHY | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H2 |
| 1 | SW_DIP_x04 | Button_Switch_SMD:SW_DIP_SPSTx04_Slide_KingTek_DSHP04TJ_W5.25mm_P1.27mm_JPin | SW2 |
| 1 | Start/Stop | DM3MAT:SW_Reed_Meder_MK6-5_P12.7 | SW1 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_4.0x4.0mm | TP1 |
Questions
How big is the Tiny PCB?
It measures 62 × 42 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tiny use?
29 parts, built around the ATTINY84-20SSU and 74HC00D. 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 Tiny KiCad files?
From the hmatuschek/ardf-tx repository on GitHub, at the commit this page was made from: the board is TX/tiny.kicad_pcb and its schematic TX/tiny.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tiny design in my own project?
Its repository states no licence, so its author keeps all rights: ask hmatuschek before reusing the design.
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