Get Started
This document is intended to guide users to build a software environment for T-TWR hardware development.
Introduction
T-TWR has the following hardware resources:
ESP32-S3-WROOM-1-N16R8
OLED display (128*64)
SA868 Embedded small size wailie talkie module
TP4054 battery charging chip
18650 battery holder
Encoder
What You Need
Hardware:
T-TWR
Computer running Windows, Linux, or macOS
Software:
arduino
platformio
Install prerequisites
Please complete the installation of the tool first. The specific steps are as follows:
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Install dependent libraries
T-TWR supports the following versions of arduino-esp32:
T-TWR needs the support of the following dependent libraries, users can use the library management to install:
Warning
If there is a compilation error, please check whether the above dependent library versions are consistent.
Examples
Pinout
Name |
Pin |
Note |
SA868_TX_PIN |
47 |
Serial transmit data pin |
SA868_RX_PIN |
48 |
Serial receive data pin |
SA868_PTT_PIN |
41 |
SA868 Transmitting/receiving control, “0” force the module to enter TX state; and “1” to Rx state. |
SA868_PD_PIN |
40 |
Power Down control, “0” for power down mode; “1” for the normal work |
SA868_RF_PIN |
39 |
high/low output power control; Leave open for high output power, low level to low output power. |
BUTTON_PTT_PIN |
38 |
transmit/receive button |
BUTTON_UP_PIN |
3 |
volume+ |
BUTTON_DOWN_PIN |
0 |
volume1 |
ENCODER_A_PIN |
9 |
Encoder Pin1 |
ENCODER_B_PIN |
5 |
Encoder Pin2 |
ENCODER_OK_PIN |
7 |
Encoder OK button |
BATTERY_ADC_PIN |
6 |
Battery voltage detection pin |
OLED_POWER_PIN |
21 |
OLED screen power control pin |
LED_PIN |
1 |
User-Defined Indicators |
Datasheet
ESP32-S3-WROOM-1-N16R8 (Datasheet)
OLED Display Module (Datasheet)
SA868 (Datasheet)
Slide and Rotary Encoder Switches (Datasheet)
Troubleshooting
If something goes wrong, first see Troubleshooting. If Troubleshooting doesn’t cover the issue you’re having, please get technical support via GitHub Issue.