Magnetic pole indicator
thingiverse
Magnetic pole indicator based on the Hall sensor for arduino. Allows you to quickly and conveniently determine the poles of permanent magnets. For self-production you will need: Printed details Li-ion charging module with protection https://aliexpress.ru/item/4001196670805.html Hall sensor module https://aliexpress.ru/item/32900981503.html Microswitch with fixation https://aliexpress.ru/item/32872196282.html Li-ion 3.7V battery up to 50 * 16 * 5 mm in size https://youtu.be/GMDjGfFG_sw
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