I've set up my minimOSD as per the diagram below, and, my Transmitter, Camera all work fine, however, there is no overlay data from the APM through the minimOSD board.
When I first set up the configuration below, the minimOSD board showed a progress 'booting up" bar on my screen, then paused and would stay at "Update Char Set".
I purchased a FTDI serial converter, and using the OSD_Config software, I updated the firmware, the character set, and saved the current 'tab' to the OSD board. Done.
When I plugged the minimOSD back in to my setup, there's no telemetry overlay.
I've tested my 3DR radio and it sends all my telemetry data to the mission planner fine, so the 3DR Radio and cable are working.
I've even set up the 3DR radio and minimOSD in parallel, (making sure the tx is not connected), and, still no joy.
- The only thing I haven't done is solder the D GND and A GND, and the D VDD and A VDD, because I have a secondary battery powering up the FVP camera and Transmitter, as in the diagram.
- And, the telemetry cable from the APM has an extra GND wire going to the 6th pin from the top, (as in the diagram), and, I've left it there as I don't think an extra GND would hurt or help.
- Bad board? How would I know?
Anybody have any ideas?
What am I missing?
Thanks
Replies
This is an old thread, but I have pertinent info to add. I experienced the same issue as the OP but finally happened on my issue after reading through this thread and many sleepless nights. Turns out my minimosd doesn't like my camera. I have a PZO420 and a fatshark 600TVL camera. I can't get my whitespy, my multirotormania board, my hobbyking minimosd, nor my radiotoflyquads minimOSD to show an overlay while using my fatshark camera. If I switch over to my PZO420 I have no issues.
I wanted to let anyone know I found another problem and solution. I have a 3dr APM 2.6, a HK mega mini and a HK Mega 2.7 (APM 2.6 with fixes). I could not get the minimOSD to overlay data on any of those FC. In trouble shooting, I discovered that the voltage coming from the APM's Tele/OSD y-cable was only outputing 4.6 volts. I replaced 5+ and GND to the OSD (leave the Rx wire) with power from a UBEC (powered by the FC battery) and its been working! I also check the power coming from the 3DR Power Module and it was outputting 5.1 volts. So it appears that that APM is dropping the PM's BEC from 5.1 to 4.6 volts.
Hope this helps anyone
Chad
Thanks Chad, solved my blank screen problem by powering my minimosd separately, not from the Tele/OSD Y-lead.
No, RenzibiOSD is not Mavlink compatible as PNP, you need some separate adapter. Search on DIYDrones, you will find many discussion
Hey Guys,
I fixed my Miniosd issue months ago.
Refer to my diagram above.
I have no idea about the remzibi.
"the dance" is the hours one spends trying to figure this stuff out.
Sorry I couldn't be of more help.
D
I've been trying to fix my problem with this, and it's interesting to note that I have *exactly* the same problem, and *exactly* the same camera (PZ0420). Only difference is I use a 5V BEC for the APM circuit, and a 12V BEC for the video and gimbal circuit.
Without having to dismantle my quad to get to the minim, is there a way I get check the crystal frequency via software? And what is "the dance"?
Hi David, I have the same setup as you and had the same problem... Then I found out that the following "pre flight procedure" solved my problem:
1. Connect APM to its Lipo --> the 5V stage of MinimOSD gets power.
2. Connect the second Lipo which powers the Camera and the VTx --> the 12V stage of MinimOSD gets power, but at this time no OSD overlay appears.
3. Press the reset button of the MinimOSD once or twice --> still no overlay.
4. Disconnect the second Lipo (the "Cam Lipo")
5. Reconnect it. --> And - yes! - I get overlay data. This works every time, I don't know why...
Hi David,
1) Which Version MinimOSD do you have?
2) Which Version of the CT tool are you using to upload the firmware/panels?
3) Which Version of Firmware are you using?
4) Which character set are you uploading?
5) Using the CT tool, can you read the panel data successfully?
6) What voltage is being supplied to the VTx side of the MinimOSD?
7) I assume you are using the MP with the telemetry, are you receiving heartbeats in the MP?
8) Do you have both SR3 AND SR0 parameters configured as seen here?
When you have the parallel cable installed you have the Tx connected to the telemetry radio right? You won't get any mavlink messages until the telemetry radio requests them.
I know it's a lot of questions but there are a number of possible issues that can cause this. Have you checked out the thread 'Adding Extra Functions to the MinimOSD'? It's a very active group that has a lot of experience with the MinimOSD; if you continue to have trouble try asking your question there.
Regards,
Nathaniel ~KD2DEY
I've triple checked my connections, mavlink works, and, I've even updated the minimOSD with the OSD_config program several times, still no joy.
-
1
-
2
of 2 Next