ZUM Radio ZUMspot RPi User manual

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 1 Rev 1.0
Troubleshooting guide
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ZUMspot RPi 1.3” OLED MMDVM-Pi ZUMspot USB
ZUMspot Elite 3.5” LCD AMBE Server ZUMspot RPi Dual Band
ZUMspot RPi Duplex Bluetooth board for Android Bluetooth board for iOS

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 2 Rev 1.0
ZUMspot USB specifications:
Contents
ZUMspot USB specifications: ........................................................................................................................2
Common Issues.............................................................................................................................................3
ZUMspot RPi: ........................................................................................................................................3
ZUMspot USB:.......................................................................................................................................4
ZUMspot RPi 3.5” LCD kit:.....................................................................................................................5
ZUMspot Dual Band:.............................................................................................................................6
ZUMspot Duplex: ..................................................................................................................................7
MMDVM-Pi: ..........................................................................................................................................8
ZUM AMBE Server:................................................................................................................................9
Bluetooth Boards: ...............................................................................................................................10
Using MMDVMCal.......................................................................................................................................11
OLED Display ...............................................................................................................................................13
Configure OLED:..................................................................................................................................14
OLED/Shim Kit:....................................................................................................................................18
Customer Support.......................................................................................................................................19

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 3 Rev 1.0
Common Issues
Note: Testing should be done with a known good Raspberry Pi with a correctly configured
image.
ZUMspot RPi:
●Board not found in Pi-Star or not working in a particular mode.
○Go to Configuration -> Modem and make sure that “ZUMspot RPi GPIO” has been
selected.
○Reflash modem firmware
■Go to Configuration -> Expert -> SSH
■Login
■Run following command: sudo pistar-zumspotflash rpi
○Test using MMDVMCal. More information is found under the Using MMDVMCal
section.
■Test Tx and Rx with the normal 433MHz frequency. If Tx and Rx work then any
issues being experienced are due to a configuration problem or the Pi-Star image
has been corrupted
●If the board has OLED issues go to the OLED Display section

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 4 Rev 1.0
ZUMspot USB:
1. No COM port found under Windows.
a. Go to “Device Manager” and check for USB devices with an exclamation point next
to it.
b. Re-install Maple Drivers
2. Board not found in Pi-Star Suggestion 1.
a. Go to Configuration -> Modem and make sure that “ZUMspot USB” has been
selected.
3. Board not found in Pi-Star Suggestion 2.
a. Go to Expert -> SSH
b. Login to pi-star
c. Type in “lsusb” in terminal
d. If a device named “1eaf:0004” is listed, then the Pi-Star image has been corrupted
4. Board not working in a particular mode.
a. Reflash firmware
i. Go to Configuration -> Expert -> SSH
ii. Login
iii. Run following command: sudo pistar-zumspotflash usb
b. Test using MMDVMCal. More information is found under the Using MMDVMCal
section.
i. Test Tx and Rx with the normal 433MHz frequency. If Tx and Rx work then any
issues being experienced are due to a configuration problem or if under Pi-Star,
the Pi-Star image has been corrupted.

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 5 Rev 1.0
ZUMspot RPi 3.5” LCD kit:
●Board not found in Pi-Star or not working in a particular mode.
○Go to Configuration -> Modem and make sure that “ZUMspot RPi GPIO” has been
selected.
○Reflash firmware
■Go to Configuration -> Expert -> SSH
■Login
■Run following command: sudo pistar-zumspotflash rpi
○Test using MMDVMCal. More information is found under the Using MMDVMCal
section.
■Test Tx and Rx with the normal 433MHz frequency. If Tx and Rx work then any
issues being experienced are due to a configuration problem or the Pi-Star image
has been corrupted
●3.5” LCD screen not showing any user info or just displaying “Initializing”
○Does the green LED on the Pi board flash after power is applied?
■If not then it is likely a SD card image problem –try to reflash the card
with a new image from pistar.uk
○Do all the LEDs on the top of the ZUMspot board flash twice after power is applied?
■If not it is likely a power supply problem –try to use a different power
supply
○Verify Nextion display has been selected
■Go to Configuration
■MMDVM Display Type should be set to Nextion
■Port should be set to modem
■Nextion Layout should be set to ON7LDS L3
○NOTE: There is a known issue in Pi-Star that the IP address sometimes does not
show up when connected via Ethernet

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 6 Rev 1.0
ZUMspot Dual Band:
●Board not found in Pi-Star or not working in a particular mode.
○Go to Configuration -> Modem and make sure that “ZUMspot - Dual Band Raspberry
Pi Hat (GPIO)” has been selected.
■If you can’t find “ZUMspot - Dual Band Raspberry Pi Hat (GPIO)” under the
Modem list then you will need to reload the ZUMspot Dual Band Pi-Star image
onto the SD card.
○Test using MMDVMCal. More information is found under the Using MMDVMCal
section.
■Test Tx and Rx with a UHF frequency and a VHF frequency. If both work then
any issues being experienced are due to a configuration problem or the Pi-Star
image has been corrupted
●If the board has OLED issues go to the OLED Display section

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 7 Rev 1.0
ZUMspot Duplex:
●Board not found in Pi-Star or not working in a particular mode.
○Go to Configuration -> Modem and make sure that “ZUMspot - Duplex Raspberry Pi
Hat (GPIO)” has been selected.
■If you can’t find “ZUMspot - Duplex Raspberry Pi Hat (GPIO)” under the Modem
list then you will need to reload the ZUMspot Duplex Pi-Star image onto the SD
card.
○Test using MMDVMCal. More information is found under the Using MMDVMCal
section.
■Test Tx and Rx with the normal 433MHz frequency. If Tx and Rx work then any
issues being experienced are due to a configuration problem or the Pi-Star image
has been corrupted
●If the board has OLED issues go to the OLED Display section

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 8 Rev 1.0
MMDVM-Pi:
1. Board not found in Pi-Star or not working in a particular mode
a. Go to Configuration -> Modem and make sure that “ZUM Radio-MMDVM for Pi
(GPIO)” has been selected.
b. Reflash firmware
i. Follow instructions in the MMDVM-Pi Configuration Guide:
https://www.hamradio.com/images_managed/misc/H0-016486_MMDVM-
Pi_Configuration.pdf
c. Test using MMDVMCal. More information is found under the Using MMDVMCal
section.

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 9 Rev 1.0
ZUM AMBE Server:
Troubleshooting the AMBE Server board is easier when using it with a 1.3” OLED
2. Device is not working with a Wi-Fi/Ethernet connection
a. Remove SD card from AMBE board, and connect AMBE board via USB cable to a
computer.
i. Go to “Device Manager” to obtain the COM port number of the ZUM AMBE
server.
ii. Open BlueDV and change settings in order to use the COM port of the ZUM
AMBE server.
1. NOTE: Make sure checkbox next to “Use AMBEServer” is unchecked
iii. Exit settings
iv. Turn ON Serial and then turn ON D-Star or DMR and connect to a reflector/talk
group with activity on it.
v. If the audio starts coming through the speakers then the problem is a
configuration issue.
b. Go to http://ambeboard.zumradio.com/configurator/ to download a new configuration
file
i. NOTE: When connecting via Wi-Fi or Ethernet it is easier to select a Static IP
address so that there is no confusion as to what the IP address will be. Make
sure to use an IP address with a high number (EX:192.168.1.80) so that it won’t
clash with any currently connected devices.
3. Device is not working under Wi-Fi
a. Double check the zum.ini file loaded onto the SD card.
i. Verify that wifi=1
ii. Double check the Wi-Fi SSID is correct in the ssid= section
iii. Double check the Wi-Fi password is correct int the ssidpassword= section

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 10 Rev 1.0
Bluetooth Boards:
1. BlueDV can’t connect to ZUMspot after Bluetooth pairing.
a. Connect ZUMspot to known good working Pi-Star setup. Then follow the steps in
ZUMspot RPi section.
b. If the ZUMspot board works under Pi-Star but not on the ZUM Bluetooth board, then
an RMA should be requested for the ZUM Bluetooth board.

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 11 Rev 1.0
Using MMDVMCal
NOTE: MMDVMCal will test Tx/Rx on ZUMspot boards and the MMDVM-Pi boards. The ZUM AMBE
Server board is not supported.
1. Turn on a radio and set it to 433.000 MHz and set it to analog mode.
a. If you want to test VHF (for ZUMspot Dual Band only) try using 145.615MHZ
2. Boot up pi-star
3. Go to Configuration -> Expert -> SSH Access
4. Login to pi-star
5. Type in the following command: sudo pistar-mmdvmcal
6. You will see this menu
7. Press the spacebar on your keyboard to do the transmit test
8. The red PTT LED should turn on. You should hear a tone on the radio. This shows that
the transmit function of the board is working
9. Press the spacebar to stop the transmit test.
10. Press the “s” key on your keyboard for the RSSI test (RX test)
a. RSSI test will not work on MMDVM-Pi board
11. Press the PTT button on the radio.

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 12 Rev 1.0
12. You should see the RSSI drop to around 47-48. This shows that the receive
function of the board is working.
13. Press the “q” key on your keyboard to exit out of MMDVMCal.

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 13 Rev 1.0
OLED Display
1. If you see lines in the display, then the OLED glass is broken. The image on the left
has broken glass while the image on the right is working correctly.
Here is a close up example of broken glass:
1. If you see many dots on the display, then the settings in PiStar have not been configured
correctly. Follow the directions below to correct the setup.
2. If the display comes up blank:
a. The settings in Pi-Star may have been configured incorrectly. Follow the directions
below to correct the setup.
b. Make sure correct ZUMspot modem was selected under Configuration -> Modem

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 14 Rev 1.0
Configure OLED:
On the “Configuration” screen of Pi-Star, set the “MMDVM Display Type” to “OLED”. Make sure the
“Radio/Modem Type” is set to “ZumSpot – Raspberry Pi Hat (GPIO)”. Next, click “Apply Changes”.
Next, select “Expert”

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 15 Rev 1.0
Next, select “MMDVMHost”
Scroll to the bottom of the page to the “OLED” section.
For 0.96” OLED screen, select “Type” “3”. Next, click on “Apply Changes”.

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 16 Rev 1.0
For 1.3” OLED screen, select “Type” “6”. Next, click on “Apply Changes”
Scroll back up to the top of the page and select “Configuration”.

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 17 Rev 1.0
Next, select “Power”
Next, select “Reboot”

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 18 Rev 1.0
OLED/Shim Kit:
2. Lines on the display.
a. See section for OLED display on ZUMspot RPi
3. Dots on the display:
a. See section for OLED display on ZUMspot RPi
4. If the display comes up blank:
a. The settings in Pi-Star have been configured incorrectly. Follow steps for “dots on
the display”
b. A wire has come loose on the back of the OLED or on the shim board

ZUM Radio troubleshooting guide
Copyright 2019-2020 ZUM Radio, Inc 19 Rev 1.0
Customer Support
There are a number of ways for customers to get support in addition to HRO staff:
MMDVM Yahoo group: https://groups.yahoo.com/neo/groups/mmdvm/info
ZUM Radio Facebook page: https://www.facebook.com/groups/249802742395450/
PiStar support forum: https://forum.pistar.uk/
PiStar Facebook page: https://www.facebook.com/groups/pistarusergroup/
Hardware support email: [e-mail]