build_your_own_mobile_phone
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build_your_own_mobile_phone [2025/02/05 09:07] sausage |
build_your_own_mobile_phone [2025/02/05 22:36] (current) sausage |
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| The last few days I've been like a pig in mud working through the T-A7670SA's feature set evaluating it for a project. I discovered that all the required hardware is present to build a working mobile phone. So of course, I went on a little tangent. This board has Bluetooth, WIFI, LTE, GPS, USB, solar charging, condenser mic input, speaker output, 18650 Battery Holder, TF Card slot, SIM slot and plenty of GPIO. | The last few days I've been like a pig in mud working through the T-A7670SA's feature set evaluating it for a project. I discovered that all the required hardware is present to build a working mobile phone. So of course, I went on a little tangent. This board has Bluetooth, WIFI, LTE, GPS, USB, solar charging, condenser mic input, speaker output, 18650 Battery Holder, TF Card slot, SIM slot and plenty of GPIO. | ||
| - | I'll walk you through how to work with the board, what to solder, how to send/receive SMS and how to send/receive calls using the just stock firmware. No code required. | + | I'll walk you through how to work with the board, what to solder, how to send/receive SMS and how to send/receive calls using just the stock firmware. No code required. |
| As there is no keypad or display, all interactions are done via USB/serial interface. Without adding interface and display hardware with our own firmware, there's only so far we can go. But we can do quite a lot as a first step. | As there is no keypad or display, all interactions are done via USB/serial interface. Without adding interface and display hardware with our own firmware, there's only so far we can go. But we can do quite a lot as a first step. | ||
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| - | ===== Hooking up the initial setup ===== | + | ===== The initial setup ===== |
| Before switching it on, it's worth putting your nano SIM card into the slot, and connecting the LTE antenna. You can start it without these, but with your SIM inserted all the auto configuration will connect up to your provider for you, and you'll get good results when testing the signal quality. | Before switching it on, it's worth putting your nano SIM card into the slot, and connecting the LTE antenna. You can start it without these, but with your SIM inserted all the auto configuration will connect up to your provider for you, and you'll get good results when testing the signal quality. | ||
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| You can list out all the Phonebook entries stored on your SIM or search for a number using a string. | You can list out all the Phonebook entries stored on your SIM or search for a number using a string. | ||
| - | ********* list all | + | ''AT+CPBR=1,500'' will list all entries from 1 to 500 which, I believe, might be a SIM maximum. Even if you have less than 500, this will show all entries regardless. |
| AT+CPBR=2 | AT+CPBR=2 | ||
build_your_own_mobile_phone.1738746473.txt.gz ยท Last modified: 2025/02/05 09:07 by sausage
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