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Never used a MAX7219 before, but I was able to drive a IVL2-7/5 with 3 pins (PWM for brightness count as 4, but not necessary) using one MAX 6921. Check out my schematic here GitHub
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.