This frame is designed for a tiny octocopter with 40mm props. It is 2mm thick and for 2S+ builds.

Recently, we have 1-2S AIO FCs with F405 MCU by JHEMCU and Flywoo. These AIO FCs do not have soldering pads dedicated for M5-M8. However, they have sufficient UARTs, so it is not difficult to control 8 motors by making resource remapping unused UARTS,  LED_STRIP or SCL (I2C) to M5-M8 and make those pins enable timer and DMA (for DShot).

• FC and ESC Mount : 16x16mm, 20x20mm, 25.5x25.5mm, M2
• Motor Mount : φ6.6mm, M1.4  (recommended to use M1.4x4mm)
• Thickness : 2mm
• Weight : About 7.5g
• Compatible with the whoop-style USB connector

If you want to mout an additioinal 4-in-1 ESC under this plate, the Minimal Bottom Plate 1.5mm is reccomended for protecting it.