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Old 07-05-2017, 11:31 AM   #1
RobinBirch
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Device: KOBO Glo
KOBO Glo serial ports

Hi,
There are two, I believe, serial ports on the Glo. J1 and J2. On the silkscreen they have V, TX, Earth and RX. TX, Earth and RX are self explanatory. Is the V a 5V input to the device to charge or is it 5V out to the serial port? If it isn't a charging input, is there a connection that will take 5V in?

Kind regards

Robin Birch
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Old 01-19-2022, 08:26 AM   #2
Gemini83
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Device: Kobo Glo HD N437
Hello, on the kobo Glo HD the serial connector is in 3.3V for the TX, RX signal and the V power supply. I think it's the same for the Glo. The V connector should not be plugged in if you are using the battery. If you insert 5 volts, you may burn out the microcontroller. It is important to use a USB <-> serial adapter with a true 3.3V for your voltages.

In French
Bonjour, sur la kobo Glo HD le connecteur série est en 3,3V pour le signal TX, RX et l'alimentation V. Je pense que c'est pareil pour la Glo. Le connecteur V ne doit pas être branché si vous utilisez la batterie. Si vous insérez du 5 volts, vous risquez de griller le microcontrôleur. Il est important d'utiliser un adaptateur USB <-> série avec un vrai 3,3V pour tes tensions.
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