Please see Wikipedia for further info on PAL/NTSC video signal. A high voltage (about 1 volt) equals white and lower voltage is darker. The start indicates that a new line is starting and the variation in voltage is simply a way to express the color. So far it has been made for a PAL video signal, but it shouldn’t be very difficult to make it compatible with NTFS.Ī normal analog video-signal can be seen here No SMD components or extra chips are needed.Īt the moment it works just fine, and only LOS and an arrow home needs to be added (this is now done). This makes it pretty easy and cheap for everyone who wants to try it out. I have chosen to make it all compatible with Arduino – so the code can be used directly with a simple arduino board, atmega with bootloader etc. This makes it possible, to build an OSD for less than 10 $ (without GPS and current sensor). I wanted to make the hardware as simple and cheap as possible, so everything has been made using only an atmega micro-controller and a few standard components (resistors, capacitors and diodes). There is a lot of commercial OSD's available, but I figured it would be fun to make one myself. Please be patientĪ few weeks ago i started to play with a DIY-OSD. This post will be updated with more pictures text etc. Same schematic but with a bit further explanation/text by Enthlapy (Dimming/brightness resistor value is a bit different, but you can just change these to what you prefer).Ī work in progress. This is the schematic I use at the moment (Please note, AIN0 and AIN1 is NOT pin A0 and A1 on Arduino). Support SimpleOSD open 16 mhz version with arduino bootloader.Flight summary (max altitude, max speed, max LOS, total distance traveled and average speed).The OSD support theses features at the moment: If you don't want to make the hardware yourself the software also supports SimpleOSD OPEN (16 mhz with arduino bootloader and LM1881 sync seperator). Neither do I intend to sell or produce anything - but others are welcome to use it as they want. I decided to make this project freely available and opensource - and I don't plan to earn anything on my work. I don't mind to implement a feature - but I'm not gonna rewrite it all for another purpose etc. Feel free to post suggestions - but be reasonable. Quite a few updates and features have been added by request from users - and I hope to continue this. ![]() But it's opensource and you can do whatever you want with it. It's not intended to be a graphic-heavy OSD, but an easy readable OSD with the most important info. Only little technical knowledge required.The main purpose of this project was to make a DIY OSD that can be made with
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