ICSP Levelshifter

Use your TinyISP with a 3.3V device.

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Most TinyISP projects are intended to use with a 5V device since USB is using 5V. Some devices need 3.3V so you
need a programmer supporting different voltage levels. This project allows you to use your existing TinyISP (5V) with
3.3V devices.
  • 8 × SMD 1206 resistor 10k
  • 3 × SMD 1206 resistor 0
  • 2 × SMD pin header 2x3
  • 1 × LD1117S33TR SOT223
  • 4 × BSS138 SOT-23 Discrete Semiconductors / Diode-Transistor Modules

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Mike Szczys wrote 06/08/2020 at 18:07 point

Well done with the circuit layout so you don't need any holes from jumpers.

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Gerben wrote 06/09/2020 at 17:49 point

0 Ohm resistors are great for homemade PCB. To bad EDAs don't really support them

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