This work uses Hi3861 as the main control chip and uses the Chuanzhi Education Hi3861 IoT WiFi module designated by the training camp. This module can provide complete Wi-Fi IoT development functions. The module has integrated packaging of peripheral components such as crystal oscillator, filter capacitor, WiFi antenna, etc., and only requires 3.3V power supply to operate normally. The main control communicates with PCA9685 through I2C and controls 8 SG90 servos to achieve the effect of a dog walking. Physical picture of the control board:
QQ video20220719130347.mp4
BOM download
PCB_PCB_[Training Camp] Spider Detective_2022-09-22.pdf
PCB_PCB_[Training Camp] Spider Detective_2022-09-22.json
PCB_[Training Camp] Spider Detective_2022-09-22.pcbdoc
Gerber_PCB_[Training Camp] Spider Detective.zip
Schematic_[Training Camp] Bionic Dog_2022-09-22.pdf
SCH_[Training Camp] Bionic Dog_2022-09-22.json
Sheet_1_2022-09-22.schdoc
62012
16*16 dot matrix screen_plug-in
Introduction: Production of a 16*16 dot matrix screen
As we all know, if text needs to be displayed, a 16*16 dot matrix screen is very necessary. However, currently there is not a complete dot matrix screen for sale on a certain product. They are all made of four 8*8 dot matrix panels. , and compared to Jialichuang's 5 yuan board, the price in the twenties and thirties is undoubtedly a sky-high price.
This version is a plug-in version, and a patch version may be released later. Thank you for your support.
BOM download
Schematic_16_16 dot matrix screen_plug-in_2022-09-22.pdf
SCH_16 16-dot screen_plug-in_2022-09-22.json
Sheet_1_2022-09-22.schdoc
PCB_PCB_2020-04-24_20-29-06_2022-09-22.pdf
PCB_PCB_2020-04-24_20-29-06_2022-09-22.json
PCB_2020-04-24_20-29-06_2022-09-22.pcbdoc
Gerber_PCB_2020-04-24_20-29-06.zip
62013
SIMPLEFOC_Brushless motor high-power dual-channel driver (verified)
Introduction: It should be the cheapest solution on the market.
Dual high-power brushless DC motor driver
supports arduino, esp32, esp8266, stm32, etc. ~
supports simplefoc
Video: https://www.bilibili.com/video/BV1QR4y1c78x?spm_id_from=333.1007.top_right_bar_window_history.content.click
was modified with reference to the simplefoc official high-power arduino board.
(Mainly because I can’t afford the ESP32 version made by the official boss, and the DRV is too expensive...)
The maximum current support is 43A.
Since most high-power brushless motors on the market come standard with a 3.5MM banana head, the output end can be directly soldered to the MR60F interface. Or wiring is fine.
Support current detection, the pin has been lead out.
An independent driver board is more convenient for testing various microcontrollers. 3.3V-5.0V can be used. Please give
me some advice.
After testing, no heat dissipation is required within 50W. The temperature is around 30. Above 50W, it is best to use heat dissipation to prolong the service life of the motor and motherboard.
Commercial use is prohibited. Thank you~
BOM download
PCB_PCB_SIMPLEFOC_High Power Dual Channel_2022-09-22.pdf
PCB_PCB_SIMPLEFOC_High Power Dual Channel_2022-09-22.json
PCB_SIMPLEFOC_High Power Dual Channel_2022-09-22.pcbdoc
Gerber_PCB_SIMPLEFOC_High power dual channel.zip
Schematic_SIMPLEFOC_Brushless motor high-power dual-channel driver (verified)_2022-09-22.pdf
SCH_SIMPLEFOC_Brushless motor high-power dual-channel driver (verified)_2022-09-22.json
Sheet_1_2022-09-22.schdoc
62014
[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861
Introduction: The light-turning reminder device based on Hongmeng HI3861 has a built-in OLED 0.96-inch I2C interface that can display information and indicate the ambient light intensity through a photoresistor, so as to remind people to turn on the lights through the display screen when it gets dark.
The light-turning reminder device based on Hongmeng HI3861 has a built-in OLED 0.96-inch I2C interface that can display information and indicate the ambient light intensity through a photoresistor, so that it can remind people to turn on the lights through the display screen when it gets dark.
IMG_20220329_233724.jpg
BOM download
PCB_[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861_2022-09-22.pdf
PCB_[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861_2022-09-22.json
[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861_2022-09-22.pcbdoc
Gerber_[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861.zip
Schematic_[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861_2022-09-22.pdf
SCH_[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861_2022-09-22.json
[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861_2022-09-22.schdoc
62015
DIY magnetic fluid speaker
Introduction: Inspired by YouTube author and Douyin author, DIY magnetic fluid speaker is not expensive, comes with a complete set of drawings, and does not require 3D printing.
[Thank you/doge]
[Video has been uploaded to Station B] https://www.bilibili.com/video/BV12V4y1x7R5?vd_source=182c12d6e4a19ba505f0a20adb31dedc#reply124791415728
I started to see the DIY works of the YouTube boss last year, but it is a pity that it has been delayed. Mass production (it seems to be mass production recently, interested students can pay attention).
[Youtube homepage https://www.youtube.com/c/DAKDJung_burnslap]
I tried to use Arduino to analyze music to control magnetic fluid, but I gave up because I had no coding foundation. It wasn’t until a few months ago that the YouTube master’s work was uploaded to Douyin, and after reading the works of other authors, I learned that electromagnets can be controlled with mos tubes. Then I made this DIY work.
——————————
[Circuit component purchase]
First, I purchased a 2.1 Bluetooth amplifier board. Because I want the magnetic fluid to beat with the bass, 2.1 is a must. (Because the module has been sealed in the box by me, I replaced it with a buyer’s show
and then bought the corresponding mos tube (very cheap, two yuan), boat-shaped switch, and electromagnet (the model I used is p45/30 , diameter 45mm, thickness 30mm, suction power 40kg), speakers (I use box-type speakers to avoid poor sound effects from wooden boxes, it is best to match the impedance and power requirements of your Bluetooth power amplifier module), etc., I will not go into details one by one.
ps: The Bluetooth amplifier I bought supports AUX input, but I don’t think it is commonly used, so there is no wire hole on the casing. If you need it, you can just modify the drawings yourself.
——————
[Magnetic Fluid Preparation]
Purchase online . The magnetic fluids are all high-density water-based, which will sink to the bottom in the water, making it difficult for the electromagnet to pull up. Even if it is attracted, it will always have a tendency to fall, which is not beautiful enough. I bought a formula from Xianyu to improve it. Here is the announcement for everyone:
1. Use pure water to prepare saturated saline, pump out the water in the bottle, and gradually replace it with high-concentration saline.
2. Attract the magnetic fluid to the mouth of the bottle, and inject lighter kerosene into it with a needle. Generally, a few tenths of a milliliter at a time is sufficient, and then shake well.
3. Observe the state until it becomes a complete spherical shape and has a tendency to float (if too much is injected, the effect will be poor)
——————— —
[Shell Production]
Online tutorials are all based on 3D printing, which is expensive and requires secondary processing for rough printing. Here is a website with drawings for laser cutting wood boards. You can adjust the size to generate drawings as needed.
https://www.festi.info/ boxes.py/I
used sketchup modeling to calculate the spatial collision, which is basically the most suitable size ratio for this bottle.
PS: There are no screw holes in the bottom plate of the drawing. I used an electric drill to drill holes and screw the Bluetooth module on the bottom plate.
—————— The
next step is the assembly process. . —————— [I forgot to put the wiring diagram, please make it up] Students with high requirements can also purchase a self-locking switch with an aperture and install it on the front as decoration —————————— [Finally, let’s talk about the cost] Shell Laser cutting 30 acrylic translucent plate 15 speaker pair 16 Bluetooth power amplifier module 45 led light bar 1 meter 11 boat-shaped switch 1 power socket 5 24v power supply 25 lighter kerosene 6 mos tube 2 magnetic fluid about 30 I can’t remember the electromagnet 35 The total is about 220 yuan, and there are also some syringes and other consumables. ——————Please leave a message to me if you have any questions. If there are many people, I may join a group!
WeChat_20220805210803.mp4
WeChat_20220805210758.mp4
Laser cut wooden shell plate thickness 3mm(1).dwg
Cutting acrylic homogeneous plate thickness 1.8mm.dwg
BOM download
Schematic_DIY magnetic fluid audio_2022-09-22.pdf
SCH_DIY magnetic fluid audio_2022-09-22.json
Sheet_1_2022-09-22.schdoc
62016
【CW32】30*30 small size and high power brushless ESC based on CW32
Introduction: [CW32] 30*30 small size and high power brushless ESC for model aircraft based on CW32
The installation size is 30*30MM two-way brushless ESC, single-panel layout, convenient for DIY welding of small-sized and high-power brushless ESC for model aircraft
based on CW32 microcontroller .
4-way brushless motor drive can be realized through superposition. Standard hole position, can be installed on drones such as traversing machines and large four-axis drones
. It supports PWM. The D600 digital protocol will be expanded later, and the forward and reverse rotation can be adjusted for fast response. Connect a copper strip to the bottom to expand the current. The target is 20A single channel and strive for 30A, actual picture. Currently, the flashing light program can be run when connected to power. The motor code is still being modified and debugged.
cw32f030c8t6-master-change definition.zip
BOM download
PCB_PCB_[CW32] 30_30 Small size and high power brushless ESC for model aircraft based on CW32_2_2022-09-22.pdf
PCB_PCB_[CW32] 30 30 Small size and high power brushless ESC for model aircraft based on CW32_2_2022-09-22.json
PCB_[CW32] 30_30 Small size and high power brushless ESC based on CW32_2_2022-09-22.pcbdoc
Gerber_PCB_[CW32] 30_30 Small size and high power brushless ESC for model aircraft based on CW32_2.zip
Schematic_[CW32] 30_30 Small size and high power brushless ESC for model aircraft based on CW32_2022-09-22.pdf
SCH_[CW32] 30 30 Small size and high power brushless ESC based on CW32_2022-09-22.json
Core board_2022-09-22.schdoc
62017
MATEK F411 fixed wing flight control
Introduction: MATEK F411 fixed-wing flight control STM32F411+MPU6500 gyroscope single panel. Two sets of serial ports, 1 soft serial port.
Adjust the BEC on the back of the PCB to 5v in the attachment before soldering.
This is modified based on the F411 fixed-wing flight control of the foggy guy.
The layout has been modified according to my habits
and has been tested as follows: 1. Normal flashing of firmware 2. Ground station identification. Serial ports 1 and 2 are normal. Receiver ELRS identification, GPS identification, barometer identification, 3. OSD normal display. Image transmission is normal 4. 1-6 pwm is normal, ESC and servo are working normally 5. Attitude is normal, no jitter
Supported but not tested function 1. ppm, sbus receiver 2. External compass 3. External galvanometer 4. Figure
Suggestions for making parameter-tuning soft serial ports:
Some friends may encounter difficulties in entering DFU mode. Can't flash firmware. The method of flashing the firmware is the same as that of the F405 flight controller, just search on Station B.
1. Check the welding to see if there are open circuits in 5V and 3.3v, and whether the 5v 3.3v voltage is normal
. 2. If you really cannot flash the firmware, it may be because the USB power supply is insufficient. You can solder the BEC that comes with the flight controller, and then press and hold the boot button on the flight controller. Finally, use battery power to enter dfu mode and connect to the computer to flash the firmware.
Optimized layout of MATEK F411 WING 4-layer board on the left.zip
BOM download
Schematic_MATEK F411 fixed-wing flight control_2022-09-22.pdf
SCH_MATEK F411 fixed wing flight control_2022-09-22.json
Sheet_1 copy_2022-09-22.schdoc
62018
STM F405 flight control bf inav flying machine fixed wing flight control
Introduction: F405 flight control, MPU6500 gyroscope, low cost. 20, 30 hole double version. The PCB file is in the attachment, and the bf and inav ground stations are connected to the USB cable to flash the firmware. Automatic return test video https://b23.tv/GcbdOsY
The flight control has been successfully tested. The board schematic diagram is drawn according to the domestic manufacturer's definition file.
Please note that there are some minor errors in the labeling of some sensor interfaces. The definition is correct, which is the difference between MOSI 1 and MOSI -1. It is recommended to build the board directly. You have to do it yourself. Check the schematic.
Functions that have been tested 1. No jitter during normal takeoff. The S1234 channel outputs normally and the orientation is normal. The gyroscope is stable and does not jitter. 2. OSD displays normally, camera and image transmission are normal 3. Voltage detection is normal 4. Serial ports 1, 4, 5 are used normally, connected to GPS, receiver is used normally 5. BB ring is enabled normally 6. LED light is normal 7. Compass, The barometer is recognized normally. IC2 interface is available.
8. BEC 5V is normal
. 9. Automatic return test is normal.
10. TX 4 serial port uses OSD parameter adjustment to
test normally. NG project
TX2 cannot be used when connected to OSD parameter adjustment
. The newly added 20-hole mini flight control cannot be used. Many group members have already made it successfully, so feel free to make it. If it is not recognized or successful, it must be a problem with your welding or chip.
After the hardware welding is completed, press and hold the BOOT button and use the USB cable to connect the bf and INAV ground stations. After entering the DFU mode, install the driver, and then click Burn Firmware. You do not need
downloaders such as STLINK or serial cables, just use the USB cable.
If you don’t understand, you can refer to the tutorial on Baidu to flash the F4 flight controller firmware
. This is purely a personal DIY communication. Please do not use it for commercial purposes. There are many imitations and references of open source solutions. If there is any infringement, please contact me to delete it. Thank you! !
F405 MPU 6500 on the left has been successfully tested and some functions are to be tested (2).zip
F405+6500 gyro flight control 20 30 dual version contains firmware and configuration files on the left.zip
BOM download
Schematic_STM F405 flight control bf inav traversing aircraft fixed-wing flight control_2022-09-22.pdf
SCH_STM F405 flight control bf inav flying machine fixed wing flight control_2022-09-22.json
mpu6500+405_2022-09-22.schdoc
62019
Concurrently manage 8 tubes for the whole bridge
Introduction: Please pay attention to safety when using
Effect video Tesla coil plays "The Lonely Warrior" - Bilibili] https://b23.tv/lUBVpEL
33321192869@qq.com
WeChat picture_20220419141718.jpg
WeChat picture_20220419141719.jpg
WeChat picture_202204191417181.jpg
WeChat picture_202204191417182.jpg
WeChat picture_20220419142654.jpg
BOM download
PCB_PCB_Parallel management of full bridge 8 tubes_2022-09-22.pdf
PCB_PCB_Parallel management of full bridge 8 tubes_2022-09-22.json
PCB_Parallel management of full bridge 8 tubes_2022-09-22.pcbdoc
Gerber_PCB_Parallel management of full bridge 8 tubes.zip
Schematic_Parallel management of full bridge 8 tubes_2022-09-22.pdf
SCH_Parallel management of 8 tubes in the full bridge_2022-09-22.json
Sheet_1_2022-09-22.schdoc
62020
【Collection】Happy little duck
Introduction: Based on Yuxin's YX-2.4G single-chip transceiver and bidirectional IO monitoring and frequency communication, it cooperates with 1818AM to realize 4-channel motor forward and reverse drive
The 4-channel remote control produced this time is simple to make, has the right level of difficulty, has a high success rate, and does not even require debugging. It can be completed very quickly and efficiently in some basic productions! Make your own model move! It is also
very happy to be able to personally experience the charm of wireless remote control and enrich your life during the summer vacation ! (๑><๑) Delicious!
Thank you Jialichuang EDA@Jialichuang!
Convenient and efficient board-making service support! Provide us with excellent circuit boards!
All merchants or stores that appear are not advertised! No advertising! No advertising! No advertising!
The first-person and third-person test videos of Duck@Car are in the attachment!
This time, a domestically produced 2.4G+MCU packaged chip is used. It is an integrated chip produced by Yuxin Microelectronics. It codes an 8-function remote control car IC and controls the forward and reverse rotation of 4 sets of motors at the same time.
Also used with 1818AM, each one has two H-bridges integrated inside, which can directly drive two DC motors. The average output current of 1.8 A is enough to satisfy this application scenario.
The main features are
low power consumption, convenient design, and saving hardware costs. The bottom layer of the chip has its own communication protocol, and the onboard micro-antenna can be used. As long as simple peripheral circuits are used, it can work normally.
This modification is very convenient.
A charge and discharge management TP4056 is added to the launch board, which saves you the trouble of finding a battery.
A small 200 mAh battery, thanks to its low power consumption, can also be played for an entire afternoon, but it still has a launch distance of 50 meters.
Note that
on the launch board, I merged the two channels into one group for forward and reverse, which can spread some power and reduce the heat of 1818AM. When
receiving
the second version of the board, the soldering pads were replaced with spring-type terminals, which made wiring more convenient and operation smoother!
The standard length of the antenna is 34mm!
The design logic
draws power from USB → boosts the charge to the battery through XL6019. Because it is a non-standard charging voltage, no special charging and discharging power management chip is used.
The recommended maximum charging voltage is 7.5V, and the maximum withstand voltage of 1818AM is 8V.
Welding recommendations for
C4 and C6 chip capacitors are best to put some solder paste on the pads, align them, and use a soldering iron to solder them.
Battery→Power distribution LDO chips
are AMS1117 and 78M05 respectively, which respectively supply the receiving power supply and the +3.3v required by 1818AM, and a set of 5V output power supply, which simultaneously supply power to the relay and also serve as an output to power the TF card player.
The water is clear and the bottom is crystal clear.
The positive VCC output power of the battery is set to 1818AM. Since the motor works underwater, it has greater power and can be provided with an appropriate heat sink. When the power voltage is ≥6v, a heat sink should also be provided.
In the binding method,
first turn on the power supply of the receiving board and then the transmitting board. When the frequency binding is successful, the receiving board indicator light is always off and the transmitting board indicator light is always on. There is a teaching video attached!
Notes on modification:
In order to save costs, a miniature water pump was used to modify the submersible motor with moderate power. Buy a horizontal type with 2 pairs of front and back blades.
Modify the motor and install it like this. It is recommended to use AB or hot melt glue when bonding, and 704 silicone rubber for waterproofing.
The three channels are used to control the entire duck, forward, backward, (turn left, turn right, use one channel)
, and the two-layer grip is more comfortable.
This channel of SW is used here to control the pause and start of the player.
For example, you can use it to light firecrackers wirelessly during the New Year, haha~
There is a first-person perspective video in the attachment.
At this point, our little duck has been modified. Let’s quickly call our friends to modify one! Come on
remote control car
! (๑><๑) Yummy!
39b42e03763ab07e0708699e8f6d41a2.mp4
bacafb7771a0fa8d385c2c2e467b1fb5.mp4
WeChat picture_20220719120953.jpg
WeChat picture_20220719121012.jpg
WeChat picture_20220730224511.jpg
WeChat picture_20220730224852.jpg
WeChat picture_20220730224859.jpg
WeChat picture_202207301618151.jpg
WeChat picture_202207301618152.jpg
WeChat picture_202207301618155.jpg
321e19e3c68e8e0240461e0b43bc0a3f.mp4
22d03b75d936e0165d35d062a083ed0f.mp4
beacd4e9034fb4ceb3022b015503224f.mp4
57d86ef672f4010245ba9af60045a2a7.mp4
WeChat picture_20220731221007.jpg
WeChat picture_202207312210071.jpg
WeChat picture_202207312210072.jpg
b4bb87e3552e246dd27dfd14c54dbaff.mp4
7eb89eaaadf87527ab439f4488a7800e.mp4
d569fcddb3ae038d7fa1fed46ac1aed3.mp4
BOM download
PCB_Receiver Board [Solicitation Order] Happy Little Duck_2_2022-09-22.pdf
PCB_Receiver Board [Solicitation Order] Happy Little Duck_2_2022-09-22.json
Receiving Board【Solicitation Order】Happy Little Duck_2_2022-09-22.pcbdoc
Gerber_Receiving Board【Solicitation Order】Happy Little Duck_2.zip
PCB_Remote Control [Solicitation Order] Happy Little Duck_2022-09-22.pdf
PCB_Remote Control [Solicitation Order] Happy Little Duck_2022-09-22.json
Schematic_[Solicitation Order] Happy Little Duck_2022-09-22.pdf
SCH_[Solicitation Order] Happy Little Duck_2022-09-22.json
[Solicitation Order] Happy Little Duck_2022-09-22.zip
Remote Control [Solicitation Order] Happy Little Duck_2022-09-27.pcbdoc
Gerber_Remote Control [Solicitation Order] Happy Little Duck.zip
62021
electronic
京公网安备 11010802033920号
I5104S
