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Charger mods and Pi Zero W HotSpot modifcation
Posted: Sun Feb 09, 2020 5:03 pm
by IK8JHL
I made my HS OpenGD77 by modifying the charging base to be able to insert the PiZero W directly inside it. To do this I had to replace the original charging circuit with a TP5100, add an LM2596 module to stabilize the voltage at 5V to power the Pi0, change a USB cable. Obviously or replace the original power supply with a 2A one.
Re: Cherger mods and Pi-zero HotSpot modifcation
Posted: Sun Feb 09, 2020 5:08 pm
by YT5HOK
Very nice! But watch for temperature, even Pi 0 runs very hot when in closed plastic case.
Re: Cherger mods and Pi-zero HotSpot modifcation
Posted: Sun Feb 09, 2020 5:10 pm
by m1dyp
nice one
Re: Charger mods and Pi Zero W HotSpot modifcation
Posted: Sun Feb 09, 2020 6:02 pm
by IK8JHL
YT5HOK wrote: ↑Sun Feb 09, 2020 5:08 pm
Very nice! But watch for temperature, even Pi 0 runs very hot when in closed plastic case.
For now about few hours its stable , if necessary i can create some hole
Re: Charger mods and Pi Zero W HotSpot modifcation
Posted: Tue Feb 11, 2020 9:06 am
by IK8JHL
IK8JHL wrote: ↑Sun Feb 09, 2020 5:03 pm
I made my HS OpenGD77 by modifying the charging base to be able to insert the PiZero directly inside it. To do this I had to replace the original charging circuit with a TP5100, add an LM2596 module to stabilize the voltage at 5V to power the Pi0, change a USB cable. Obviously or replace the original power supply with a 2A one.
Re: Charger mods and Pi Zero W HotSpot modifcation
Posted: Wed Feb 12, 2020 11:56 am
by IK8JHL
Another littele mods, reverse direction of USB cable
Re: Charger mods and Pi Zero W HotSpot modifcation
Posted: Wed Oct 14, 2020 4:17 am
by AB6RF
Here's another pictorial of a GD-77 based hotspot.
I made a somewhat shielded connector for the USB cable, so far the setup seems stable at 500mW using the rubber ducky antenna.
I'll leave it there for few days before I try higher power settings.
Wonder mine doesn't show the IP address on the GD-77 display....
Ab6RF
Re: Charger mods and Pi Zero W HotSpot modifcation
Posted: Wed Oct 14, 2020 6:11 am
by F1RMB
Hi,
To see the IP address, you need to use the
CAST display driver on the Pi-Star (MMDVMHost)
- Using the official Pi-Star
from expert mode, edit the mmdvmhost configuration file, and set Display to CAST, in [General] section
- Using my fork
in the configuration page, in MMDVMHost configuration panel, select the display driver in the MMDVM Display Type drop down list
Cheers.
---
Daniel
Re: Charger mods and Pi Zero W HotSpot modifcation
Posted: Wed Oct 14, 2020 6:52 am
by AB6RF
Thanks Daniel. I didn’t know about that setting.
For posterity, the setting in pi-star is at:
Configuration/Expert/MMDVMHost/General Display=CAST (note that “CAST” is in all caps)
AB6RF