# FYI: Model 01 ICSP pin numbering is rotated

**URL:** <https://community.keyboard.io/t/fyi-model-01-icsp-pin-numbering-is-rotated/5322>\
**Category:** Programming\
**Created:** [May 22, 2022, 11:18pm UTC](https://community.keyboard.io/t/fyi-model-01-icsp-pin-numbering-is-rotated/5322 "2022-05-22T23:18:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![argonblue](https://avatars.discourse-cdn.com/v4/letter/a/a9a28c/32.png) [@argonblue](https://community.keyboard.io/u/argonblue)\
**Post date:** [May 22, 2022, 11:18pm UTC](https://community.keyboard.io/t/fyi-model-01-icsp-pin-numbering-is-rotated/5322/1 "2022-05-22T23:18:59Z")

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In case it becomes relevant for anyone else with a Model 01, the ICSP connectors are numbered differently from the usual Arduino and AVR ICSP pinouts.

On the schematics and silkscreens, pin 1 is GND, while the AVR ICSP standard seems to have MISO on pin 1. The name labels and relative positions of the pins are correct, so rotating the connector (if you’re using a multi-conductor connector instead of individual jumpers) from what you might expect should work.

I’m glad I double checked this.

Somewhat relatedly, the Model 01 seems to present an electrical challenge for my Arduino Micro as ISP (too much current?); I had to dig out the Dragon and leave the keyboard powered on to get the ATtinys to do ISP programming reasonably.