Circuit Gem FAQ - kiteretro/Circuit-Gem GitHub Wiki

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How do I force the Circuit Gem to shut down?

Turn the power switch "OFF" then press the "mode" button

How do I install Circuit Gem Software updates?

  1. Enable SSH and check that the Circuit Gem is connected to Wi-Fi then log in to the Raspberry Pi Zero using SSH
  2. Run the command cd Circuit-Gem then run the command sudo ./update.sh

How do I connect to Wi-Fi without typing out a password?

Insert your Circuit Gem SD card into a PC then create a file called wpa_supplicant.conf using “Notepad++” that contains the text below (insert your own country, ssid and psk)

country=US
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
    ssid="My Network Name"
    psk="mypassword"
    key_mgmt=WPA-PSK
}

How do I hide the battery icon?

  1. Enable SSH and check that the Circuit Gem is connected to Wi-Fi then log in to the Raspberry Pi Zero using SSH
  2. Open the file /lib/systemd/system/cs-hud.service by running the command sudo nano /lib/systemd/system/cs-hud.service then change ‘ExecStart=/home/pi/Circuit-Gem/cs-hud/cs-hud’ to ‘ExecStart=/home/pi/Circuit-Gem/cs-hud/cs-hud -s’
  3. Press CTRL and X then press ENTER to save
  4. Run the command sudo reboot

How do I solder the wire to the battery?

  1. Carefully remove the tape from the end of the battery and unfold the tabs so that you can see the solder points
  2. Carefully unsolder the existing wires
  3. Carefully solder the new wires
  4. Carefully reassemble

How do I check that the soldering was successful?

Soldering the GPIO pins pf the Raspberry Pi can be difficult. The Circuit Gem has a number of labelled test pads that can be used to verify that each pin was soldered correctly. The table below shows the relationship between test pad and Raspberry Pi GPIO pin:

Circuit Gem test pads labelled below


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