Most of USBasps are not able to program at 3.3V. Some say they can switch between 5V and 3.3V, but not signal pins, e.g. MOSI.
Project tutorial by Billy cheung
Project tutorial by glennedi
A novel input device implemented with a binary tree.
Add an alarm to a pipette tip box to warn you when you have left your pipette tips uncovered.
Project tutorial by kzra
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