Differences

This shows you the differences between two versions of the page.

--- hamradio:mmdvm:pog [2019/08/14 02:31] – [In-system re-flash] philpem
+++ hamradio:mmdvm:pog [2019/09/05 23:23] – [MMDVM POG board mods and notes] philpem
@@ Line 1: / Line 1: @@
 ====== MMDVM POG board mods and notes ======
-The [[https://github.com/wojciechk8/MMDVM_pog/|MMDVM POG]] board is a widely-available Raspberry Pi HAT. It uses an STM32F105R8T6 microcontroller with a simple analogue front-end to connect a Raspberry Pi to a radio transceiver.
+The [[https://github.com/wojciechk8/MMDVM_pog/|MMDVM POG]] board is a widely-available Raspberry Pi HAT. It uses an STM32F105RBT6 microcontroller with a simple analogue front-end to connect a Raspberry Pi to a radio transceiver.
+**Warning** -- some MMDVM POG boards (especially the Chinese clones) are built in a Raspberry Pi HAT form-factor and have the 3.3V LDO regulator fitted. **The regulator must not be fitted if the board is being used as a HAT!**. Leaving the POG's LDO fitted may damage or destroy the power management IC on your Pi (this is especially common on the Pi 3)!  Remove the LDO regulator before using the HAT.
 ===== In-system re-flash =====