[Training Camp] Ordinary Hongmeng Robot Dog

VID_20220723_103205.mp4

Hi3861_wifiiot_app_allinone.bin

BOM download

PCB_PCB_[Training Camp] Hongmeng Robot Dog_2022-09-24.pdf

PCB_PCB_[Training Camp] Hongmeng Robot Dog_2022-09-24.json

PCB_[Training Camp] Hongmeng Robot Dog_2022-09-24.pcbdoc

Gerber_PCB_[Training Camp] Hongmeng Robot Dog.zip

Schematic_[Training Camp] Ordinary Hongmeng Robot Dog_2022-09-24.pdf

SCH_[Training Camp] Ordinary Hongmeng Robot Dog_2022-09-24.json

Sheet_1_2022-09-24.schdoc

61587

ip5328 power bank motherboard (suitable for Laowu case)

Introduction: Lao Wujia’s shell is suitable for Lao Wang’s battery
to make a 2w power bank

A long time ago, Lao Wang's battery was kept naked
until I saw the casing of Lao Wu
. The size is just right.
Lao Wang's battery needs to be changed to a single string. That is to melt the solder and separate the two electrodes and then break them apart. The two batteries were then glued back together and connected in parallel.
The space for placing the board in the case is very small, and I still used a sinking board USB. The case said 5v2a. It should have been an ip5306 type chip. Of
course, you need to fast charge it for your own use.
Then install ip5328. I couldn't draw it,
so I had to draw the stacking structure of two boards. The height was not high enough and the components couldn't be placed on the back of the small board. I couldn't draw the 2nd layer (it was just a few steps away...). I added 4 layers
and then used Lichuang to proof
it and came back from two layers. I bought a single A-port ip5328 board from a junk shop before. After taking it apart and soldering
it, I found that the second port cannot be used. The mos control pin has no power at all. I
replaced both pieces with other chips. Once successful,
this is the single-port customized version. chip? Then the advanced
test fast charging can reach 18w
, that's
all nonsense.
 
Remember not to watch the welding of the BOM machine. There is a resistor next to the lamp to set the battery type. If you weld it, the voltage will be 4.35v. Generally, it is 4.2v. No need to weld it.
There is also a button. I sent it for proofing. JLC lost it twice, so it hasn’t arrived yet and I can’t test it.
That’s it. Remember to like it.
 
 
 
 

PCB_PCB2_2022-11-05.pdf

BOM_Interface Board_PCB2_2022-11-05.xlsx

Altium_ip5328 power bank motherboard (suitable for Laowu case)_2022-11-05.zip

PDF_ip5328 power bank motherboard (suitable for Laowu case)_2022-11-05.zip

BOM_Interface Board_Schematic2_2022-11-05.xlsx

61588

Micro speech synthesis module based on SYN6288

Introduction: Verify the solution verification board design of Lichuang Mall speech synthesis chip SYN6288 (mall number c123765).

* This project is to verify the speech synthesis chip SYN6288 of [Lichuang Mall](https://www.szlcsc.com/index.html) ([Mall No. c123765](https://item.szlcsc.com/125037.html) ) scheme verification board design.
* This project participates in [EDA Open Source Hardware Platform](https://oshwhub.com/)[Solution for Solution Verification Module](https://oshwhub.com/rewards/f4bbab6365034e80aadb8f8ebf77c846)

- - -

* This design is a Speech synthesis module module based on SYN6288.
* SYN6288 is a widely used and low-cost speech synthesis chip
* The circuit designed includes the SYN6288 chip and necessary peripheral circuits. The input voltage of the circuit is 3-5v. The output BN and BP can directly drive the micro-speaker and be used in the array. On the basis of the pin interface, stamp hole SMT pads are added to facilitate rapid integration into other development boards

- - -

* The next step will be PCB board proofing, and then the PCB blank board photos, soldering finished product photos, and program testing will be updated
* Stamp holes The SMT pad file is in the attachment

- - - The

updated proofing was back on 2020/3/2
(actually it has been done for a long time, but I was busy with online classes and did not have time to send it out). Then I took out the components and
prepared the components for welding and the empty board:
![IMG_20200217_110258.jpg] Tin one of the pads of the chip component with a blank board
![IMG_20200217_110804.jpg] Solder the components except the main chip
![IMG_20200217_112059.jpg] Finally solder them (please ignore the flux and too much Too much tin, due to the epidemic, the solder paste I bought did not arrive.)
![IMG_20200217_112706.jpg]
- -

Then, power on, connect the serial port, and send. . . It didn't make any sound. . .
All the components were measured and there were no problems. The noise floor of the power amplifier inside the module could also be heard from the speakers.
So I checked the datasheet and found that the input needs to be connected to an inverter. . .
Put three components on it, power it on, and it's finally ready to use
. Here's what it looks like in the end. . .
![IMG_20200302_110327.jpg] However, the above schematic diagram has been updated and can be used directly.
Since this is a serial port module, you can test
the serial port without a microcontroller at a baud rate of 9600. Just send hexadecimal numbers
. Chinese characters one or two. Data of 34567890:
FD 00 17 01 00 D2 BB B6 FE C8 FD CB C4 CE E5 C1 F9 C6 DF B0 CB BE C5 CA AE 9E. For
the specific data composition, please refer to [Official Document] (https: //atta.szlcsc.com/upload/public/pdf/source/20170810/C123765_1502335211916879745.pdf?Expi res=4070880000&OSSAccessKeyId=LTAIJDIkh7KmGS1H&Signature=It9CIvHiONcDts2bB%2B%2Bx2M3Eg1s %3D&response-content-disposition=attachment%3Bfilename%3DC123765_SYN6288_2017-08-10. PDF)

SYN6288 module pad.json

SYN6288 module PCB.json

Micro speech synthesis module based on SYN6288.json

BOM download

PCB_SYN6288 module PCB_2022-09-24.pdf

PCB_SYN6288 module PCB_2022-09-24.json

SYN6288 module PCB_2022-09-24.pcbdoc

Gerber_SYN6288 module PCB_2022-09-24.zip

Schematic_Micro speech synthesis module based on SYN6288_2022-09-24.pdf

SCH_Micro speech synthesis module based on SYN6288_2022-09-24.json

SYN6288 module circuit_2022-09-24.schdoc

61589

electronic