Thanks Marc, great video review! There has been a group working on integrating this with the multiwii platform I added a link to your video on the multiwii forums.
Hi Marc thank you for your quick response, firmware and char set both re flash ok wonder whether I have a wiring problem, have done a schematic but don't know how to send it to you for your comment, OSD and Video Picture can be viewed to the point where it plugs into the TX,
Just a quick FYI regarding the 12v in/out pins. I'm running 5v through it as my FatShark runs at 5v and it works fine. The little chip you said gets hot doesn't seem to be producing much/any heat at 5v.
Lol, There is no avoiding them here in the Jungle, one video some random made a copyright claim on the background noise. Their music did sound just like traffic noise and bugs though.
Hi Marc Thank you for the video, my 12v reg burnt, V0.1, soldered both pads for 5V. but now have video Sig. to 5.8 boscam TX lead but no transmission, am using Key cam with 5V ubec conneccted I have direct feed of 12V to boscam for power i.e. Video Sig. & neutral 12Volt to power TX but no transmission, Tried 2 TX's, 2RX's, but nothing recieved can you help Geoff.
Depending on the failure mode of the v-reg you might have cooked your maxim chip. Another thing you can test is whether the unit will take a firmware re-flash and if the maxim chip will take a new character set.
Hi Marc have fitted a Ground wire between Video ground and 12V ground at connection to Boscam 5.8 G TX, same result (no transmission) but I still have Picture and OSD data, If I fit a .01 mf Capacitor in video line I get no picture is the size of the capacitor my problem, Regards Geoff.
You need an FTDI adapter to do updates with the arducam config tool. If you cannot update the firmware with the arducam config tool then you probably will have to re-flash the bootloader. I assume it uses a standard Arduino bootloader. I have not started using this in anger yet so good luck.
other problem is if you use the 12V and the solderblobs the voltage regulator can power your receiver too + attached servos and a lot of other stuff. Thats why the things blow up.
thanks alot for your hints! i also got one of the cheap ebay clones earlyer. hobbyking and all other cloners should have made their homework better than selling a cheap copies with old layouts! choosing new names for products isnt enough at all to cover their lack of creativity. until now there seems to be not a single improved clone out there so their intention is clear to me now. will buy a new minimOSD from 3DR now i think, no money saved at all going the cheap way.
Hi Marc I have the same board, I've connected it as master to APM (tx and rx connected) and sodered the jumpers to power the second satege, but I have no video, I have data overlay but no vVideo under it, is like Gopro is not connected. I'm connecting a Gopro Hero3 Silver, ground and video only to OSD, since it has it's own battery I'm not feeding it with 5V Video Transmitter and gopro work fine if I connect them to each other I'v flashed the board to the latest version via FTDI, it just works fine. What could be the problem? Thanks
Perhaps the gopro autodetects whether it is hooked up to a video input.. and the Impedance between the gopro and maxim chip is not right. stick a resistor in there between the video and ground. Similar to this: ruclips.net/video/QUdGGHi5YWY/видео.html
This is a guess.. Its an expensive chip ($18 on digikey) and there are fake ones out there. I've seen a copy out there that was non programmable. They only sure way is to get it from 3DR.
Yep, just the MAX7456 chip costs $13 dollars in batches of 2500 on digikey. Time will tell whether the hobbyking clone has a fake chip on it also. Can you email me macro photo of the chip on yours or read the model number?
To be fair HobbyKing just find the stuff in China then re-sell it. They might have tested it briefly or done a little research but obviously the issues did not get noticed. It is for stuff like this is why they have the discussion board and reviews. First buyers take a risk. I can think of one improved clone. The 9XR.
+RCHacker Probably a rectifier diode from the high frequency transformer (Switch downconverter) on the 12V side. I usually connect a wire from this diode (on the side with the line) to the +5V on the data side. Then both chips are running on 5V from the APM.
Those crickets in the background had me searching my house looking for them before I realized where the sound was coming from.
Thanks Marc, great video review! There has been a group working on integrating this with the multiwii platform I added a link to your video on the multiwii forums.
This is one of the best OSDs when used with an APM.
Love your videos!
Hi Marc thank you for your quick response, firmware and char set both re flash ok wonder whether I have a wiring problem, have done a schematic but don't know how to send it to you for your comment, OSD and Video Picture can be viewed to the point where it plugs into the TX,
Does your video tx and minimosd have a common ground? Also perhaps try an AC coupling capacitor inline on your video.
Just a quick FYI regarding the 12v in/out pins. I'm running 5v through it as my FatShark runs at 5v and it works fine. The little chip you said gets hot doesn't seem to be producing much/any heat at 5v.
Lol, There is no avoiding them here in the Jungle, one video some random made a copyright claim on the background noise. Their music did sound just like traffic noise and bugs though.
Yes, for my rssi osd experiment. As for in anger with the ardupilot, not yet.
Thanks yes there missing info about what FTDI to use on DIYDrones website but found similar info on another site.........all good :)
Still useful info in 2018. Thank you
Hi there
Cannot seem to find documentation for the 6 pinouts on the board to connect the FTDI to so I can flash it
heads up. I have these in my shop on sale for $10 usa. Can not beat it. love all the videos. keeep it up
Got it its done through the RX and TX pins right ?
cheers
Hi Marc
Thank you for the video, my 12v reg burnt, V0.1, soldered both pads for 5V. but now have video Sig. to 5.8 boscam TX lead but no transmission, am using Key cam with 5V ubec conneccted I have direct feed of 12V to boscam for power i.e. Video Sig. & neutral 12Volt to power TX but no transmission, Tried 2 TX's, 2RX's, but nothing recieved can you help Geoff.
Depending on the failure mode of the v-reg you might have cooked your maxim chip. Another thing you can test is whether the unit will take a firmware re-flash and if the maxim chip will take a new character set.
Hi Marc have fitted a Ground wire between Video ground and 12V ground at connection to Boscam 5.8 G TX, same result (no transmission) but I still have Picture and OSD data, If I fit a .01 mf Capacitor in video line I get no picture is the size of the capacitor my problem, Regards Geoff.
Try around 220μF. Look up bruces fpv backpack articles and videos. If you hook up your minimosd output straight to your goggles/screen does it work?
You need an FTDI adapter to do updates with the arducam config tool. If you cannot update the firmware with the arducam config tool then you probably will have to re-flash the bootloader. I assume it uses a standard Arduino bootloader. I have not started using this in anger yet so good luck.
other problem is if you use the 12V and the solderblobs the voltage regulator can power your receiver too + attached servos and a lot of other stuff. Thats why the things blow up.
do i need to connect to transmitter to get osd screen. im just trying to see horizon line.
Would there be any way to use the minimosd without an apm? Like just to use as an osd for gps data, voltage, and current?
thanks alot for your hints!
i also got one of the cheap ebay clones earlyer.
hobbyking and all other cloners should have made their homework better than selling a cheap copies with old layouts! choosing new names for products isnt enough at all to cover their lack of creativity.
until now there seems to be not a single improved clone out there so their intention is clear to me now.
will buy a new minimOSD from 3DR now i think, no money saved at all going the cheap way.
So did you ever use this board and if so what were the results...
Hi Marc
I have the same board, I've connected it as master to APM (tx and rx connected) and sodered the jumpers to power the second satege, but I have no video, I have data overlay but no vVideo under it, is like Gopro is not connected.
I'm connecting a Gopro Hero3 Silver, ground and video only to OSD, since it has it's own battery I'm not feeding it with 5V
Video Transmitter and gopro work fine if I connect them to each other
I'v flashed the board to the latest version via FTDI, it just works fine.
What could be the problem?
Thanks
Perhaps the gopro autodetects whether it is hooked up to a video input.. and the Impedance between the gopro and maxim chip is not right. stick a resistor in there between the video and ground. Similar to this: ruclips.net/video/QUdGGHi5YWY/видео.html
RCHacker I have used a 330ohm resistor and got the same result, I'm starting o think there is something wrong with the Max7456 chip
This is a guess.. Its an expensive chip ($18 on digikey) and there are fake ones out there. I've seen a copy out there that was non programmable. They only sure way is to get it from 3DR.
Also, check the pinout and make sure the 7456 is getting power.
RCHacker I've just ordered one form 3DR
Hi sir plzzzzz why we need use apm telem?????
can i attach gps and how do i get flight battery data. thanks!
It should be changed from Hobby King to Hobby Clone.
Great video...
Thanks for all that, got all the info I needed for this.
How do i connect to standard transmitter?
+kennethpappas ground and video_out to the tx.
Sounds like you could have a cheapo clone osd chip on there that has saved on flash memory by having the charset hard wired. You get what you pay for.
Yep, just the MAX7456 chip costs $13 dollars in batches of 2500 on digikey. Time will tell whether the hobbyking clone has a fake chip on it also. Can you email me macro photo of the chip on yours or read the model number?
Yep, do yourself a bit of research of on arduino pro programming, it will explain the FTDI and ISP programming methods.
To be fair HobbyKing just find the stuff in China then re-sell it. They might have tested it briefly or done a little research but obviously the issues did not get noticed. It is for stuff like this is why they have the discussion board and reviews. First buyers take a risk. I can think of one improved clone. The 9XR.
no worries
thanks for the great video !
Its written on the back of the board.
The one with the line on it is a diode!
Got it, cheers. So some reverse polarity protection?
+RCHacker Probably a rectifier diode from the high frequency transformer (Switch downconverter) on the 12V side. I usually connect a wire from this diode (on the side with the line) to the +5V on the data side. Then both chips are running on 5V from the APM.
thank for your tip bro
Cool, I chose right. :) Cheers.
It seems you do not like hobbyking !
Very interesting. Thank you for the video.
Thanks, you welcome.