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--- ntb:connections [2020/02/27 18:50] – ursgraf
+++ ntb:connections [2026/09/25 16:03] (current) – ursgraf
@@ Line 17: / Line 17: @@
   - Magnet
-{{ :delta:magnet_print_ntb.jpg?600 |}}
+{{ :delta:ntb:magnet_print_ntb.jpg?600 |}}
+One of our robots has a magnet with high residual magnetization even after the magnet has been turned off. For this purpose The MOSFET was replaced by an H-bridge circuit. When releasing the magnet, the H-bridge drives the magnet in opposite direction for a very short time. This ensures that the magnet immediately releases its block. For driving the H-bridge a second GPIO is necessary and must be defined in the configuration file.