#Minim osd v1 1 android#
The Nexus 7 has the normal connection of both Rx and Tx to the telemetry radio, the OSD only listens to the data but does not send any data as this would collide with the Android device. This is also handy as there are two USB outputs so I can charge my Zeiss Cinemizers at the same time.
If no Android device is used I only connect an USB charger to the cable normaly going to the Android device, the kind to charge your mobile phone in the field like this one. The USB power of the Nexus7 also feeds the OSD with 5V.
If your frame has not a good air flow for cooling. I made a parallel 90° connector on my telemetry ground radio so I can connect the Nexus7 at the same time as the OSD. The second stage regulator from the MinimOSD boards earlier than V1.1 gets too hot on 12V video setups. Connect the Tx output of the telemetry radio to the data input (Rx) on the MinimOSD. I use a 3DR radio as they are reliable and quite small. Connect 12 V power (bridge on MinimOSD is not closed).ĭata part: you need some kind of telemetry to get the data to the ground. It's main components are an ATmega328P 8 bit microcontroller with an Arduino bootloader, and a MAX7456 monochrome on-screen display. It's tailored for use with ArduPilot Mega and the MAVlink protocol, and designed to be as small as possible. This board features two independent power and ground sections to isolate the OSD’s analog stage: a +5V section for the ATmega and the OSD’s digital stage, powered through the FTDI cable or other +5V source and a regulated +5V section. Video part: Instead of putting the OSD inbetween the camera and VTx you feed the MinimOSD with the signal coming out of the VRx at the ground and connect the output to your screen or goggles. This is a mini Arduino based on-screen display board. I like that it is a mini Arduino (328P) based on-screen display board. Im using a MinimOSD V1.
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