From the album: Midibox seq_v4 und MbNg_cv_fm
On the left side you see the STM32F4 core with its shield and the DINX /DOUT Modules. On the right side you see the new residing of my old midibox FM, the midibox CV and a switched power supply which delivers +5V +/-12V with any notebook PS. Despite the setup with two LM2576 and a MC34063, it is very low on noise.