Board-dat/DAR/DAR1064-DAT/DAR1064-DAT.md
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@@ -30,20 +30,30 @@
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| Power Supply of Vdd_io2 | to Vdd | to Vdd |
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| USART of Programming | PB0 PB1 (USART 3) or PE0 PE1 (USART 4) | PB0 PB1 (USART 3) |
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+- check back board jumper is set to USART 3
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+## precheck
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-## Usage
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+- double check if the [[serial-dat]] recognized correctly , install Driver for [[CH340-DAT]], check CH340K
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+- Power LED indicator should be light up next to the PCB
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+- default sketch: press button, another LED should be light up == sketch https://github.com/Edragon/arduino-main2/blob/main/0-BSP/DAR/DAR1064/Button/Button.ino
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+- click "upload the sketch" to upload, not flash bootloader, the bootloader is already pre-flashed.
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-- Install Driver for [[CH340-DAT]], check CH340K
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-- Power LED indicator should be light up
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+sketch upload
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+- Clock `-24 mhz internal`
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+- Bootloader serial port: `PB0 / PB1`
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+- Reset pin: `default`
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-## bootloader settings
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-- Clock -24 mhz internal
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-- Bootloader serial port: PB0 / PB1
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-- Reset pin: default
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+
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+
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+
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+
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+## bootloader settings for the board
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+
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+
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![](55-05-18-02-02-2023.png)
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Chip-cn-dat/EY-dat/EY-23A-dat/EY-23A-dat.md
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@@ -1,7 +1,17 @@
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-# EY-23A
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+# EY-23A-dat
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+
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+
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+- [[bt-dual-mode-dat]] - [[EY-23A-dat]] - [[EY-33-dat]]
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+
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+- [[CC2541-dat]] - [[EY-23A-dat]]
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+
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+
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The EY-23A module has clear advantages: it supports SPP for PC Bluetooth communication and BLE 5.0 for mobile apps or WeChat mini programs. It can work with an EY-34 as a master to form master-slave communication with EY-23A as slaves. In EY-34 multi-connect mode, one EY-34 can connect to up to seven EY-23A slave modules simultaneously.
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+
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+
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+
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## EY-23A — Bluetooth 3.0 SPP + BLE 5.0
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Features:
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@@ -46,4 +56,7 @@ Common AT commands supported by the module:
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## References
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-- [[EY-dat]]
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\ No newline at end of file
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+- [[EY-dat]]
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+
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+
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+- [[EY-23A]] - [[EY]]
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\ No newline at end of file
Chip-dat/TI-dat/TI-AMP-dat/TI-AMP-dat.md
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@@ -2,6 +2,11 @@
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# TI-AMP-dat.md
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+
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+
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+- [[TI-AMP-dat]] - [[TI-audio-dat]]
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+
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+
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OPA2188 == OPA2188 0.03-μV/°C Drift, Low-Noise, Rail-to-Rail Output, 36-V, Zero-Drift Operational Amplifiers
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OPA2197
Chip-dat/TI-dat/TI-Network-dat/CC2541-dat/CC2541-dat.md
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@@ -1,6 +1,20 @@
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# CC2541-dat
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+
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+
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+
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+
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+## chip
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+
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+- [[CC2541-dat]] - [[EY-23A-dat]]
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+
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+
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+
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+
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+## info
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+
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+
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CC2541 is a Bluetooth Low Energy (BLE) System-on-Chip (SoC) developed by Texas Instruments. It is widely used in various applications such as wireless sensor networks, wearable devices, health and fitness devices, and home automation.
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The CC2541 offers low power consumption and a small form factor, making it suitable for battery-powered and energy-efficient devices. It includes a powerful 8051 microcontroller unit (MCU), along with an integrated Bluetooth radio and a range of peripherals.
Chip-dat/TI-dat/TI-audio-dat/TI-audio-dat.md
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# TI-audio-dat
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+
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+
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+- [[TI-AMP-dat]] - [[TI-audio-dat]]
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+
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+
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+
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+
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+
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- [[TPA3116-dat]]
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- [[PCM2906-dat]] - [[PCM5122-dat]] - [[PCM5102-dat]]
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@@ -11,6 +19,8 @@
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- [[PCM1804-dat]]
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+- [[amplifier-audio-dat]]
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+
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## ref
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Home.md
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@@ -25,7 +25,7 @@
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- [[battery-dat]] - [[battery-BMS-dat]]
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-- [[network-dat]] - [[RC-dat]] - [[MQTT-dat]]
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+- [[network-dat]] - [[RC-dat]] - [[MQTT-dat]] - [[bluetooth-dat]] - [[wifi-dat]]
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- [[app-dat]] - [[RC-apps-dat]] - [[FPV-dat]] - [[rover-dat]]
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Network-dat/Bluetooth-dat/BT-dual-mode-dat/BT-dual-mode-dat.md
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@@ -3,9 +3,12 @@
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- [[EY-23A-dat]] - [[NBL1064-dat]]
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-- [[EY-34-dat]]
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+- [[bt-dual-mode-dat]] - [[EY-23A-dat]] - [[EY-33-dat]] - [[EY-34-dat]]
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+
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+- [[CC2541-dat]]
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+
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## ref
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- [[bluetooth-dat]]
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\ No newline at end of file
Tech-dat/Interface-dat/Serial-dat/2026-02-07-18-57-06.png
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Binary files /dev/null and b/Tech-dat/Interface-dat/Serial-dat/2026-02-07-18-57-06.png differ
Tech-dat/Interface-dat/Serial-dat/Serial-dat.md
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@@ -17,6 +17,11 @@
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- [[USB-dat]]
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+## on board USB to TTL serial adapters check
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+
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+below is the variation of [[CH340-dat]]
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+
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+![](2026-02-07-18-57-06.png)
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## Usage
Tech-dat/amplifier-dat/amplifier-audio-dat/amplifier-audio-dat.md
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@@ -29,7 +29,7 @@
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- [[diodes-dat]] - [[PAM-dat]]
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-- [[TI-AMP-dat]]
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+- [[TI-AMP-dat]] - [[TI-audio-dat]]
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- [[OPA1622-dat]] == SoundPlus™ Audio Operational Amplifier with High Performance, Low THD+N and Bipolar Input
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