Users Manual

2. Hardware Preparation

2.1. Hardware Preparation

•

ESP32-S2-MINI-1 and ESP32-S2-MINI-1U modules

• Espressif RF testing board

• One USB-TTL serial module

• PC, Windows 7 recommended

•

Micro-USB cable

2.2. Hardware Connection

1. Connect ESP32-S2-MINI-1, ESP32-S2-MINI-1U and the RF testing board, as Figure

2-1 shows.

Figure 2-1. Testing Environment Setup

2. Connect USB -UART serial module to the RF testing board via TXD, RXD and GND.

3. Connect USB-UART module to the PC.

4. Connect the RF testing board to the PC or a power adaptor to enable 5 V power

supply, via the Micro-USB cable.

5. During download, short IO0 to GND via a jumper. Then, turn "ON" the board.

6. Download ﬁrmware into ﬂash using the download tool ESP32-S2 DOWNLOAD TOOL.

7. After download, remove the jumper on IO0 and GND.

Espressif Systems

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Sep. 2020