New MinimOSD! Witespy now sells a new version with the KV Team mods already on the board so it is ready to go for either APM or MultiWii; $11, header pins included. I have one on order now.
I would have probably used a small to turn POT so I can get calibrate the voltage precisely. Although I would also have to use another resistor (maybe 10k) between the center pin and the multiwii so that if someone or me moves the pot all the way to one side or the other it does connect the analog input directly to the raw 12.6V battery. It would end up limiting the current if I overcome the dielectric strength of the FETs inside the ATmega, and since it is a high Z input, it also should not affect voltage to much.
Like your infornative videos. When you say MultiWii controllers do you include the Naze32 which I believe is a variation of the software. I have compared this one to the KK2.0 and find it way superior in level/horizon control. Would the MinimOSD suite this board and if so how would it be connected. Cheers John
It should do and there are posts about doing it in the forums but I've not done it myself. Good luck with it. The MinimOSD is a great piece of kit! Happy flying!
Hi Torbjörn, this is one of the keychain cameras - the 808#16 V2 with a 120 degree lens. Cheap and allows for local 720p recording into a micro-SD card and video out for the FPV system. You can see more of this at How to configure a keychain camera (808 #16 V2) to get video out for FPV Happy flying!
I mention the current sensor and show one in the new APM Mini 3.1 videos. The current is then displayed onto the MinimOSD via the telemetry port. Best of luck with your project.
Thanks. I'm looking for information on using the current sensor on a multiwii flight controller (EZ MEga 3.0 by RTFQ). It's my understanding that use of the current sensor on APM is fundamentally different due to the firmware differences.
Another doubt, which kind of resistor do I need? I'm seeing that there are some of 1.5k ohm but 1/2 or 1 W or 22k ohm but of 1/2w 5% 2w 5% etc.. Thanks
I pop a wattmeter in-between the battery and the model and use that to read off the amps being pulled. I use a HK-010 ( see HobbyKing HK-010 power meter overview) I'm not sure you can get this exact one any more but you get the idea. Hope this helps. Happy flying!
You can't use the pixhawk software installed on a MinimOSD with a Multiwii. Multiwii talks MSP, APM and Pixhawk talk MAVlink. The MinimOSD needs to be running the right firmware for the FC you're using. It's all covered in my various MinimOSD videos.. best of luck..
As said..I just want to apply your minimosd setup for a pixhawk installation (with pixhawk minimosd software). Is that working, is my original question?
i have a question, i hope you know the answer...... i have built in the minimosd (with MWOSD firmware) and almost erverything is working... but there is still a problem. OSD shows main battery voltage (signal is coming from fc) and i have also VIDEO voltage... but videovoltage is 0,00volt.... i have the minimosd 2 and there are 2 batt connections, BAT1 and BAT2... so i soldered a + wire from the fpv battery to BAT2 (and also GND...) but i get 0,00volt.... Now i think that i have to connect the fpv voltage to the power pins of the video in/out pins... BUT, the board is powered with a 5v bec now so my question is: Can i connect the 5v (on the FTDI port) and ALSO (at the same time) the 12v FPV voltage on ftdi side??? I hope you can help me, i do not want to fry the osd!! Otherwise i can maybe connect ONLY the 12v fpv side, the i get videovoltage AND the osd board is POWERED with this 12v ONLY........
It will be fine. The Multiwii doesn't plug into the battery directly anyway. You need to make sure you are using ESCs or BECs that can handle the 4s LIPO pack. Happy flying!
Unless it's the latest versions of things like the Micro MinimOSD then you'll need a resistor bridge to drop the voltage to a level the OSD can measure. Check out the documentation for the one you have. Best of luck!
Hi. After doing all the job, I got the wrong voltage. I try all the adjusts at the configuration screen but the max voltage I got was 6 volts for a 3s battery 2200mah. And with a 3000mah battery it goes to 2 volts. Completely non sense. I already did something very similar with my crius 2.5 se, but with 33k and 51k resistor instead, and works perfectly. Any idea why I'm having this problem with minimosd? Thanks.
+Christopher Jacques If you can get the detail from the telemetry from the flight controller then no. In all of the other videos on the MinimOSD you can see we use the data from the FC to populate the OSD now.. Happy flying!
+Painless360 OK I have the plug and resistors all connected and with heat shrink on them. Before I make the attempt of soldering it to the second pin on that chip do you think connecting a power module to the flight controller of my Cheerson CX-20 would give me the same good readings as connecting these resistors to the OSD? I only ask because I do have a power module that I can use.
Not sure I've never tried it like that. There are newer boards that do have these connections at the side now (look for ones with the KV-Team mod) that make the soldering a little less tricky! Best of luck..
I have modified the minimosd same as what is done as you .. using a 1.5k Ohm resistor for the negative cable and 22k Ohm resistor to the positive cable however, why the value of the voltage that appears on the OSD FPV does not match the voltage of the battery is actually I use a 3S battery. measured using a voltage monitor. suppose the value that was obtained voltage monitor tool is 11.27volt, but why in the FPV OSD worth only 10.95volt? I hope you can help in the next video, because your video modification is right for multiwii (MWOSD) I use FC Crius AIO Pro with firmware APM (minimosd-extra.config) yes, I know that in APM using the power module to determine the value of the battery voltage .. Essentially, I do not use the power module in APM, I want you to make modifications minimosd which can also be used in the APM, but without using power module ... I was very plead with you, if necessary, you make a tutorial video please ...
Does this adapter work for all versions of the miniosd firmware? I'm looking to add this onto my naza lite, but I've seen a different soldering/resistor setup. code.google.com/p/minnazaosd/wiki/Stages
The KV_Team with a Micro MinimOSD means that you can use the pads on the edge of the board for voltage and current sensing. Those boards have all these resistor bridges needed build in.. Hope that helps!
Hi, i added my MinimOSD now to my APM Quad, but the reasult is not what i expected. Sometimes there are some icon and text parts missing. Do you know why this is as it is now? I am running MinimOSD Extra on the board. And i am missing some status information. Oh and this was my first test, i have not adjusted the items correctly, i will do this later, when i know which icon shows what ;) Here you can see my OSD record ruclips.net/video/d6thprP5Pkw/видео.html
New MinimOSD! Witespy now sells a new version with the KV Team mods already on the board so it is ready to go for either APM or MultiWii; $11, header pins included. I have one on order now.
Excellent tutorial. I especially like your method, Thanks much,
Thanks Wayne. Glad you liked it! Happy flying.
I would have probably used a small to turn POT so I can get calibrate the voltage precisely. Although I would also have to use another resistor (maybe 10k) between the center pin and the multiwii so that if someone or me moves the pot all the way to one side or the other it does connect the analog input directly to the raw 12.6V battery. It would end up limiting the current if I overcome the dielectric strength of the FETs inside the ATmega, and since it is a high Z input, it also should not affect voltage to much.
Like your infornative videos. When you say MultiWii controllers do you include the Naze32 which I believe is a variation of the software. I have compared this one to the KK2.0 and find it way superior in level/horizon control. Would the MinimOSD suite this board and if so how would it be connected. Cheers John
It should do and there are posts about doing it in the forums but I've not done it myself. Good luck with it. The MinimOSD is a great piece of kit!
Happy flying!
Great video! What fpv camera are u using...im in the process of getting one but im not shure which to buy..the one you are using seems good.
Hi Torbjörn, this is one of the keychain cameras - the 808#16 V2 with a 120 degree lens. Cheap and allows for local 720p recording into a micro-SD card and video out for the FPV system.
You can see more of this at How to configure a keychain camera (808 #16 V2) to get video out for FPV
Happy flying!
Painless360 Ok thx! Will look into it! Continue ur great work doing this ... it greatly apreciated by a newbie like myself. Thx again!:)
Thank you. Great Video
Do you have a tutorial video on setting up a current sensor with Multiwii or minimosd?
I mention the current sensor and show one in the new APM Mini 3.1 videos. The current is then displayed onto the MinimOSD via the telemetry port.
Best of luck with your project.
Thanks. I'm looking for information on using the current sensor on a multiwii flight controller (EZ MEga 3.0 by RTFQ). It's my understanding that use of the current sensor on APM is fundamentally different due to the firmware differences.
Another doubt, which kind of resistor do I need? I'm seeing that there are some of 1.5k ohm but 1/2 or 1 W or 22k ohm but of 1/2w 5% 2w 5% etc.. Thanks
just curious, what is the easiest way to measure current i would like to know what current a speed controller is pulling on initial ground test... ?
I pop a wattmeter in-between the battery and the model and use that to read off the amps being pulled. I use a HK-010 ( see HobbyKing HK-010 power meter overview) I'm not sure you can get this exact one any more but you get the idea. Hope this helps. Happy flying!
Can this be used also with pixhawk if not using the power module with volt and amp? (which is normally providing the data to the minimosd)
You can't use the pixhawk software installed on a MinimOSD with a Multiwii. Multiwii talks MSP, APM and Pixhawk talk MAVlink. The MinimOSD needs to be running the right firmware for the FC you're using. It's all covered in my various MinimOSD videos.. best of luck..
As said..I just want to apply your minimosd setup for a pixhawk installation (with pixhawk minimosd software). Is that working, is my original question?
i have a question, i hope you know the answer...... i have built in the minimosd (with MWOSD firmware) and almost erverything is working... but there is still a problem. OSD shows main battery voltage (signal is coming from fc) and i have also VIDEO voltage... but videovoltage is 0,00volt.... i have the minimosd 2 and there are 2 batt connections, BAT1 and BAT2... so i soldered a + wire from the fpv battery to BAT2 (and also GND...) but i get 0,00volt.... Now i think that i have to connect the fpv voltage to the power pins of the video in/out pins... BUT, the board is powered with a 5v bec now so my question is: Can i connect the 5v (on the FTDI port) and ALSO (at the same time) the 12v FPV voltage on ftdi side??? I hope you can help me, i do not want to fry the osd!! Otherwise i can maybe connect ONLY the 12v fpv side, the i get videovoltage AND the osd board is POWERED with this 12v ONLY........
Apologies, I haven't used this for a very long time so I'm not up to date with the latest firmware. Best of luck
Hi. Nice video! A question, Can I use the minim osd v1.1 to do this? Is the green one that you used in the cc3d video. Or is it different ?
Not sure. If it will take the firmware then it should. Check with the seller before buying.. Best of luck!
If I follow your cc3d with minimosd tutorial and do this, will it work?
***** Depends on the firmware version you are using. Read the notes for the version you are going to use to check.
Best of luck.
Howdy. Can you tell me if the Multiwii SE V2.5 can support a 4S battery? I'm using 30 amp ESCs.
It will be fine. The Multiwii doesn't plug into the battery directly anyway. You need to make sure you are using ESCs or BECs that can handle the 4s LIPO pack.
Happy flying!
Thanks for the direction Painless. That makes sense to me. I'll check on the ESCs next.
Is minim OSD support 4s 14.8v?
Unless it's the latest versions of things like the Micro MinimOSD then you'll need a resistor bridge to drop the voltage to a level the OSD can measure. Check out the documentation for the one you have. Best of luck!
Hi. After doing all the job, I got the wrong voltage. I try all the adjusts at the configuration screen but the max voltage I got was 6 volts for a 3s battery 2200mah. And with a 3000mah battery it goes to 2 volts. Completely non sense. I already did something very similar with my crius 2.5 se, but with 33k and 51k resistor instead, and works perfectly. Any idea why I'm having this problem with minimosd? Thanks.
Not sure, I'd recheck the resistor bridge. best of luck!
would I even need to do this if I have my minimOSD connected to my telemetry? it is showing me voltage I just hope that it is correct.
+Christopher Jacques If you can get the detail from the telemetry from the flight controller then no. In all of the other videos on the MinimOSD you can see we use the data from the FC to populate the OSD now.. Happy flying!
+Painless360 OK I have the plug and resistors all connected and with heat shrink on them. Before I make the attempt of soldering it to the second pin on that chip do you think connecting a power module to the flight controller of my Cheerson CX-20 would give me the same good readings as connecting these resistors to the OSD? I only ask because I do have a power module that I can use.
Not sure I've never tried it like that. There are newer boards that do have these connections at the side now (look for ones with the KV-Team mod) that make the soldering a little less tricky! Best of luck..
I have modified the minimosd same as what is done as you ..
using a 1.5k Ohm resistor for the negative cable and 22k Ohm resistor to the positive cable
however, why the value of the voltage that appears on the OSD FPV does not match the voltage of the battery is actually
I use a 3S battery.
measured using a voltage monitor.
suppose the value that was obtained voltage monitor tool is 11.27volt, but why in the FPV OSD worth only 10.95volt?
I hope you can help in the next video, because your video modification is right for multiwii (MWOSD)
I use FC Crius AIO Pro with firmware APM (minimosd-extra.config)
yes, I know that in APM using the power module to determine the value of the battery voltage ..
Essentially, I do not use the power module in APM,
I want you to make modifications minimosd which can also be used in the APM, but without using power module ...
I was very plead with you, if necessary, you make a tutorial video
please ...
+aDe check out the documentation for the firmware you are using. There is normally a setting/ slur you can change to get it the same. Best of luck!
any video tutorial to configured thats you mean?
i am using APM firmware
If we do then it'll be in the APM series.. Best of luck!
which video did you mean?
please let me address your web video that describes the configuration of the battery voltage in apm . . .
Does this adapter work for all versions of the miniosd firmware? I'm looking to add this onto my naza lite, but I've seen a different soldering/resistor setup. code.google.com/p/minnazaosd/wiki/Stages
Each setup of the firmware seems to have it's own requirements. I'd follow the one for the version of firmware you are looking at.
Happy flying!
Thanks for your reply. I soldered adapters up today : (. Looks like I need to order new resistors.
is it the same by Mico minimOSD or can i use the KV Mod Pins: GND & BAT1?
The KV_Team with a Micro MinimOSD means that you can use the pads on the edge of the board for voltage and current sensing. Those boards have all these resistor bridges needed build in.. Hope that helps!
Hi, i added my MinimOSD now to my APM Quad, but the reasult is not what i expected.
Sometimes there are some icon and text parts missing. Do you know why this is as it is now?
I am running MinimOSD Extra on the board.
And i am missing some status information. Oh and this was my first test, i have not adjusted the items correctly, i will do this later, when i know which icon shows what ;)
Here you can see my OSD record
ruclips.net/video/d6thprP5Pkw/видео.html