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DIY Lap Timer with Multiple Pilot support
#16
(05-Oct-2017, 07:00 PM)Fint Wrote: Quick question, in read that the nano can only offer 40mah to what you connect to it. The receiver pulls way more. Am i missing something?

Hello Fint,

My understanding is the 40mA is the maximum current per analog/digital pin can draw from the chip. In the DIY video the RX is connected to the 5v pin which is powered by USB and typically rated to 500mA minus the draw from chip, however with USB OTG this may also vary from host device as it may limit the current draw for USB OTG devices.

In my experience, I can power the RX5808 and a HC-06 Bluetooth module from the Arduino USB - 5v pin without any issues.

However the full schematic recommends powering from a dedicated 5v regulator connected to the Arduino 5v pin. You can view the schematic @ https://www.pidflight.com/pidflight-lap/build-your-own/

Hope this answers your question Smile

Cheers,
Christian
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#17
Thanks guys, all clear.
Got alle the stuff in now, Will be soldering soon.
Another question, does the rx need An antenna or does it work fine without even a SMA connector?
Check out my videos @ www.youtube.com/Marcelfint and let me know what you think!
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#18
(06-Oct-2017, 07:33 PM)Fint Wrote: Thanks guys, all clear.
Got alle the stuff in now, Will be soldering soon.
Another question, does the rx need An antenna or does it work fine without even a SMA connector?

It's recommended to use the VRx without an antenna -- it works fine and generally less sensitive.
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#19
Finished it yesterday. Works great!
Thanks for the support.

Just trying to find the best antenna solution. Wondering what would happen if i remover the SMA connector.

https://ibb.co/kQiciw
https://ibb.co/ja8XGG
Check out my videos @ www.youtube.com/Marcelfint and let me know what you think!
[-] The following 1 user Likes Fint's post:
  • Tom BD Bad
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#20
Maybe a very stupid question but i would like to know if it's possible to make a race tracker on 2.4 GHz. This because we organize event for kids with stock e010's and it would be great if we could track there time through a lapp. This to give the kids a more competition feeling.
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#21
(11-Oct-2017, 10:21 AM)Fint Wrote: Finished it yesterday. Works great!
Thanks for the support.

Just trying to find the best antenna solution. Wondering what would happen if i remover the SMA connector.

https://ibb.co/kQiciw
https://ibb.co/ja8XGG

Awesome job Fint! Smile

There shouldn't be any issues with running the RX5808 receivers without antennas. All of my timers have no antennas installed and reduce the sensitivity.

You could experiment with using a patch antenna for example, however you may find using a dipole may detect high readings from other parts of the track too.
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#22
(12-Oct-2017, 11:15 AM)Dutch Drone Builder Wrote: Maybe a very stupid question but i would like to know if it's possible to make a race tracker on 2.4 GHz. This because we organize event for kids with stock e010's and it would be great if we could track there time through a lapp. This to give the kids a more competition feeling.

With this lap timer, it reads the signal strength from the video transmitter. However it is the reverse in the case with the e010's, they're receiving the control transmitter signal (i.e. not emitting a signal). There's an app I've seen before called "Whoop Laps", it uses the camera of the smart phone to time laps for these tiny quads -- might be something you could look into Smile
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#23
I have flashed ver 2.2.0 firmware to Arduino using XLOADER.
 
I have set up WiFi in accordance with website:  https://wiki.rotoroverflow.com/pidflight...i#pin-outs
 
I power the PIDFLIGHT device up with 5v.
 
I connect my Android phone to the device’s website through “Settings” on my phone.
 
I open PIDFLIGHT app on my phone.  App verbally says “Connected” to the device website.
 
App starts searching with “Detecting lap timing devices Please wait.”  I do not do anything to make this happen.  It starts this on its own I believe.
 
However, it never finds any lap timing device.  It just keeps searching and saying Please Wait.
 
One steady red light on Arduino and one blinking red light on WiFi module.
 
I have RX from Wifi module going to TX  of PIDFLIGHT Lap PCB rev02 and TX of Wifi module going to RX of PIDFLIGHT Lap PCB rev02 (please see attached picture depicting the wires criss-crossing from Wifi module to PCB).
 
Can anyone please tell me what I am doing incorrectly?  I would very much like to get this PIDFLIGHT Lap Timer up and running, detecting the device, and purchase the premium app.
 
Thank you!
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#24
(08-Oct-2017, 11:17 PM)cmengler Wrote: It's recommended to use the VRx without an antenna -- it works fine and generally less sensitive.

I would like to know what RSSI readings are you having with the drone just at the side of the RX module?
With the drone at 500mW output power I'm having a maximum of 356 RSSI.

Another question: Has anyone experimented with high directional antennas?

Thank you
Reply


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