polyvision/EasyRaceLapTimer103This is a transponder intended for indoor microdrones. It's not that bright, which is fine when flying only a few feet from the receiver. It's also very small, which is good when every milligram counts.
Micro transponder is an open-source printed circuit board by polyvision, from the polyvision/EasyRaceLapTimer repository on GitHub. It is a 2-layer board of 10.4 × 13 mm with 11 parts on 9 nets, routed with 54 tracks and 11 vias.
Its parts include 1 resistor, 1 IC and 1 diode. It belongs with the AVR (ATmega, ATtiny) boards of this library.
This is a transponder intended for indoor microdrones. It's not that bright, which is fine when flying only a few feet from the receiver. It's also very small, which is good when every milligram counts.
It can still be programmed using alligator clips on the sides. The lettering on the back will show you which pad goes where (PB0, PB1, etc.). See the ATtiny85 datasheet for how they connect to the physical pins and their extended features.
Solder the +5V and GND pads to the power. If necessary, a +3.7V input (such as from a 1S lipo cell) should be enough.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | CONN_01X01 | Measurement_Points:Measurement_Point_Square-SMD-Pad_Big | , , P1, P2, P3, P4, P5, P6 |
| 1 | 150 Ohm, 0.25W | Resistors_SMD:R_0603_HandSoldering | R1 |
| 1 | ATTINY85-S | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | IC1 |
| 1 | LED | SMD_Packages:SMD-2010_Pol | D1 |
polyvision/EasyRaceLapTimer
This is a transponder intended for indoor microdrones. It's not that bright, which is fine when flying only a few feet from the receiver. It's also very small, which is good when every milligram counts.
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It measures 10.4 × 13 mm and has 2 copper layers, 1.6 mm thick.
11 parts. 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.
From the polyvision/EasyRaceLapTimer repository on GitHub, at the commit this page was made from: the board is datasheets/micro_transponder_v1/micro_transponder.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask polyvision before reusing the design.