here is a 32Bit MCU, ARM Cortex-M3, for $0.08 https://www.alibaba.com/product-detail/New-Original-In-Stock-GD32F130K8U6-QFN_1600676544577.html https://www.alib

here is a 32Bit MCU, ARM Cortex-M3, for $0.08 https://www.alibaba.com/product-detail/New-Original-In-Stock-GD32F130K8U6-QFN_1600676544577.html https://www.alibaba.com/product-detail/New-Original-In-Stock... This can probably run all the software needed for a simple drone, control, navigation, etc. Here is an EU supplier: https://eu.mouser.com/ProductDetail/Lumissil/IS31CS8977-QFLS2-TR?qs=Znm5pLBrcAJGieF8PCPwjg%3D%3D https://eu.mouser.com/ProductDetail/Lumissil/IS31CS8977-QFLS... They cost less than nails, how are you gonna track this shit?