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An USB-connected In-Circuit Emulator for dwtk.
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README.md

dwtk-ice

An USB-connected In-Circuit Emulator for dwtk.

Hardware

Schematics

dwtk-ice schematics

Bill of materials

ID Description Reichelt Item no.
U1 ATtiny4313 ATTINY 4313 PU
Q1 BC548B BC 548B
Y1 Crystal 20,000MHz 20,0000-HC49U-S
D1, D2 Zener diode 3,6V ZF 3,6
LED1 LED Red 5mm LED 5MM RT
LED2 Led Green 5mm LED 5MM GN
C1 Electrolytic capacitor 10uF/35V RAD 10/35
C2 Multi-layer ceramic capacitor 100nF X7R-5 100N
C3, C4 Ceramic capacitor 22pF KERKO 22P
R1, R2 Carbon film resistor 1/4 W, 5%, 68 Ohm 1/4W 68
R3 Carbon film resistor 1/4 W, 5%, 2,2K Ohm 1/4W 2,2K
R4, R5 Carbon film resistor 1/4 W, 5%, 1,5K Ohm 1/4W 1,5K
R6 Carbon film resistor 1/4 W, 5%, 22K Ohm 1/4W 22K
R7 Carbon film resistor 1/4 W, 5%, 470 Ohm 1/4W 470
USB1 USB panel socket, type A RND 205-00660
H1 + H2 Header pins 1x40 SL 1X40G 2,54
  IC socket, 20-pin GS 20
  Prototype PCB 3cm x 7cm  

Prototype

dwtk-ice prototype front

dwtk-ice prototype back

DISCLAIMER

THIS PROJECT IS PROVIDED AS IS. USE IT AT YOUR OWN RISK. THIS DEVICE IS USB CONNECTED AND MAY DAMAGE YOUR COMPUTER.

The USB connections in the schematics are there just for reference, please check the actual pinout of your connector before assembling and/or using.

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