The 16-channel servo control board based on the Hongmeng Hi3861 module can be connected to multiple external servos to complete various functions of writing machines, robot dogs, and robotic arms. You can connect servos according to your specific development projects. In addition, in order to expand the main control The external pins of the chip are led out by pin headers to achieve more project development. The main control chip and the servo control chip use I2C to communicate. The communication addresses A0 to A5 of the servo control chip PCA9685 are grounded, that is, the address is 0x40. Pay attention to the positive and negative poles when connecting the power cord, and pay attention to the positive and negative poles when wiring the servo. The power introduction pin header mainly supplies power to the servos. Each servo is calculated based on 200mA current. It needs to drive most servos and configure the corresponding 5V power supply.
BOM download
PCB_Hi3861 servo control board_2022-09-24.pdf
PCB_Hi3861 servo control board_2022-09-24.json
Hi3861 servo control board_2022-09-24.pcbdoc
Gerber_Hi3861 servo control board.zip
Schematic_Based on Hongmeng Hi3861 main control 16-channel servo control board_2022-09-24.pdf
SCH_Based on Hongmeng Hi3861 main control 16-channel servo control board_2022-09-24.json
Hi3861 servo control board_2022-09-24.schdoc
61577
Hongmeng Hi3861 module IoT switch application +1084566A
Introduction: Use Hongmeng Hi3861 module to remotely control the servo switch and light main control circuit board
Based on Lichuang EDA Hongmeng IoT switch application, the main control chip Hongmeng Hi3860 uses in-line components to facilitate welding, which is suitable for novices to start welding. Based on the teachings of Boxuegu, some component modifications were made. The voltage stabilizing chip was replaced with ASM1117-3V3, the USB was replaced with MICRO-USB, and the restart button and test button were adjusted to both ends of the board. After soldering this PCB board, I found that the 5v and gnd in the middle can be moved to the side, which makes it easier to connect the DuPont wire. In addition, it is a little difficult for novices to solder the 5V of MICRO-USB. You can consider soldering several chip components on the pads.
BOM_Hongmeng Hi3861 module IoT switch application +1084566A_2022-03-07.csv
IMG_20220320_232800.jpg
1655998388994.jpg
BOM download
PCB_PCB_Hongmeng Hi3861 module IoT switch application +1084566A_3_2022-09-24.pdf
PCB_PCB_Hongmeng Hi3861 module IoT switch application +1084566A_3_2022-09-24.json
PCB_Hongmeng Hi3861 module IoT switch application +1084566A_3_2022-09-24.pcbdoc
Gerber_PCB_Hongmeng Hi3861 module IoT switch application +1084566A_3.zip
Schematic_Hongmeng Hi3861 module IoT switch application +1084566A_2022-09-24.pdf
SCH_Hongmeng Hi3861 module IoT switch application +1084566A_2022-09-24.json
Hongmeng Hi3861 chip IoT switch application_2022-09-24.schdoc
61578
[RA] Minimum system development board based on Renesas R7FA2E1A72DFL chip
Introduction: Minimum system development board based on Renesas R7FA2E1A72DFL chip.
Based on the Renesas R7FA2E1A72DFL chip minimum system development board, this development board was developed according to the training camp course jointly organized by Renesas and Lichuang EDA. The touch, PWM adjustment, and light driving in the course can be completed through connecting pins. A green LED that can be controlled by the IO port is added to the board to verify whether the program burning is successful. At the same time, this development board can be easily inserted into a breadboard for the development of more projects. . A problem was discovered during the actual welding. R1 was not connected to LED1. Just swap the positions of R1 and C4 during manual welding. The silk screen of the PCB board was adjusted. Because they are both 0805 packages, we can weld normally by swapping them. .
BOM download
PCB_PCB_[RA] Circuit design based on Renesas MCU desktop assistant_2022-09-24.pdf
PCB_PCB_[RA] Circuit design based on Renesas MCU desktop assistant_2022-09-24.json
PCB_[RA] Circuit design based on Renesas MCU desktop assistant_2022-09-24.pcbdoc
Gerber_PCB_[RA] Circuit design based on Renesas MCU desktop assistant.zip
Schematic_[RA] Minimum system development board based on Renesas R7FA2E1A72DFL chip_2022-09-24.pdf
SCH_[RA] Minimum system development board based on Renesas R7FA2E1A72DFL chip_2022-09-24.json
Sheet_1_2022-09-24.schdoc
61579
electronic
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