OpenGD77

Yes, the official charger isn't great and charges rather slowly. That is why I replaced the board with a TP5100 charge module. It charges much faster, but unfortunately it doesn't seem to charge all the way to 8.4 volts, and I have tried more than one of them. I don't mind sacrificing a little capa...

Yes. But most online resources about Lipo charging state the charger has to charge a 2S battery to 8.4V for it to be 100% charged. e.g. https://blog.ampow.com/lipo-voltage-chart/ Even Wikipedia shows the fully charged voltage of a Lipo as 4.2V per cell https://en.wikipedia.org/wiki/Lithium_polymer_b...

KI5GZK wrote: ↑

Thu Nov 12, 2020 6:55 am

How about a battery voltage calibration setting?
That way my radio might actually show 100% when it stops charging instead of 94%.
It seems to be about 0.1 volt low compared to the actual battery voltage.

So what voltage does your battery reach at top of charge ?

I presume < 8.2V

I've released a new development version.

Click here for the details

https://github.com/rogerclarkmelbourne/ ... 0.11.12.01

Welcome Goki

KI5GZK wrote: ↑

Wed Nov 11, 2020 12:33 am

Are the quick keys still a work in progress?

Yes.

They do work,but there are still some problems, which may require a complete rewrite of the functionaliy

Can anyone tell me whether in the USA, the temperature is always displayed in deg F, or whether perhaps technical equipment displays the value in deg C ?

The RF and other hardware in this nradio is much worse than the GD77 or the DM1801 The GD77 has separate Tx and RX sections for VHF and for UHF. The RD5R just has one wide band RF section for 100Mhz to 600MHz, with a low quality switchable output filter for UHF. The spectrum analysis of the RD5R sho...

Hello good night Daniel thanks for your help, I was able to get a cable and I was able to recover the walkie now it works with opengd, but I tried to install the original firmware and low bt version error ... E tested with firmware v2.1.9sgl Flash_lower_64k and it doesn't work. I read that someone ...

Thanks Peter, From my measurements I have established that the raw value changes by 2 for ever 1 deg C This seems consistent across my radios. However the absolute offset value for 0 deg C varies by +/- 10 between each radio. To calculate the 0 offset use the calculation Offset = RAW_VALUE + (ACTUAL...