In this video I'll make an emulator of the well-known iButton key based on ATtiny13. The frame of the key is the same size as the original one, and the microcontroller's EEPROM memory allows to store up to 8 key codes.
The key itself runs on parasitic power, but programming requires an external 8-30 volt power source, for example, a CR-9V (PP3) battery.
** English subtitles available **
Attention! The video has been created for research purposes only. All information carried within is exploratory in nature. The creators take no responsibility for any incorrect use of the technologies mentioned.
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CONTENTS:
00:00 - Trailer
01:12 - Task setting
03:21 - Overview of a similar project
04:52 - Emulator schematic
05:39 - PCB
05:52 - A long and tedious source code review
15:04 - Compilation, programming
15:31 - Testing
16:53 - Soldering
21:02 - Field tests
22:12 - Conclusion
🎵 BACKING TRACKS (Billions of thanks to the authors!):
@N&MCreation ( / nmcreation ) - • Industrial Metal Backi... , • Industrial Rock Backin...
Now YOU Shred ( / nowyoushredjamtrackson... ) - • Massive Jimi Hendrix J...
LINKS:
Project - oshwlab.com/sneer2sneer/batte...
Code - github.com/DmitryMuravyev/ATt...
Additional project files - drive.google.com/drive/folder...
ATtiny13 Datasheet - ww1.microchip.com/downloads/e...
Tips and Tricks to Optimize Code for 8-bit AVR - ww1.microchip.com/downloads/e...
1-Wire protocol (Book of iButton standards) - pdfserv.maximintegrated.com/e...
USBasp firmware - www.fischl.de/usbasp/
USBasp firmware update guide - www.electronics-lab.com/proje...
MicroCore (ATtiny13) for Arduino IDE - github.com/MCUdude/MicroCore
Battery-free 4in1 DS1990 emulator based on tiny13 - anyram.net/blog_ru/?p=1050
COMMANDS:
Uploading/fuses:
avrdude -v -pt13 -cusbasp -Pusb -B32 -Uhfuse:w:0xff:m -Ulfuse:w:0b00111010:m -Uflash:w:iButton_Emulator.ino.hex:i
Decompiling binary file:
avr-objdump -Dzmavr:25 Binary_file.hex
Decompiling ELF file (Executable and Linking Format):
avr-objdump -S Binary_file.elf
TOOLS:
TS-100 Soldering Iron - ali.ski/0Hc5ES
Soldering Iron Tip (original) for TS-100 - ali.ski/-sdF1
Soldering Iron Tip (not original) for TS-100 - ali.ski/1z8cdh
Soldering Hot Air Gun - ali.ski/DzD9L
Silicone Mat - fas.st/MbWBDK
Syringe Needles - ali.ski/FQB6qc
Syringe Plunger - ali.ski/EFeLq
Soldering PCB Holder - ali.ski/-gqP1z
LAOA Tweezers - ali.ski/BgsBF
Breadboard with wires - ali.ski/ZcGWy_
40-pin Jumper Wires - ali.ski/BuQlZ
Alligator Clip to Banana Plug Cable - ali.ski/lyopJ
Banana Plug to Test Hook Clip Cable - ali.ski/u1ceJ6
Bench Vise - ali.ski/enn2Z
LAOA Nippers - ali.ski/buDNO_
SUPPLIES:
Soldering Flux WNB - ali.ski/FElC4
Solder Wire (KAINA) - fas.st/NcwLm
Solder Paste WNB 183С Sn63Pb37 - ali.ski/iyqYTE
Copper Solder Remover Wick - ali.ski/Q_v_C
High Temperature Kapton (Polyimide) Tape - ali.ski/XS71T6
EQUIPMENT:
Hantek DSO5102P Oscilloscope - ali.ski/ywoBaZ
UNI-T SMD Tester - ali.ski/LGZsF
USBASP AVR Programmer - ali.ski/vO7zsd
COMPONENTS:
ATMega328 Arduino Nano (replica) - ali.ski/IhW7Ob
iButton Reader - ali.ski/kSQ7Sk
Tactile Push Button - ali.ski/_C8te
Tactile Push Button Omron - ali.ski/_DjUP3
MB10F Bridge Rectifier - ali.ski/M6YIn
SMD SOD-123 Schottky Diode - ali.ski/xVbiN
SMD LED Kit - ali.ski/iIKYU
SMD Capacitor Sample Book - ali.ski/E2jOv
SMD Resistor Sample Book - ali.ski/jXRM8_
#attiny13 #ibutton #dmitrymuravyev