96 configuration RGB bricks

This is a 96-configuration mechanical keyboard project, K375S master control!

The following is a boast

　　1. With my case, the battery capacity reaches an unprecedented 15,000mah battery. The 10,000mah battery powers RGB, OLED, human body radar and Arduino main control. The 5,000mah battery is exclusive to the 375s main control. The total power exceeds 55 watt-hours, bringing ultra-long RGB battery life. .

　　2. 29 studs are used to screw together the PCB and the positioning plate. Half of the studs have corresponding holes in the shell. Overall, the stability is the best in the world. I have never seen a keyboard fixed with so many screws.

　　3. Supports bare PCB mode. It can still operate without making a casing. Relying on PCB + positioning board + main control, basic keyboard functions can be completed. There is no RGB. With the opening of the positioning board, it is allowed to be between the PCB and the positioning board. Embedded with two lithium batteries, it provides up to 600mah power.

　　4. Ultra-high brightness RGB. After painstaking wiring, the RGB power supply line is very thick. The main power supply line reaches 1.1mm width, and most of the branches can also reach 0.8mm width. In the test excluding battery life, 102 axis lights (space three Each light) can reach a power consumption of 17 watts and directly shine through the PCB, shaft body and keycaps. 

　　5. According to the idea of ​​high cohesion and low coupling in software engineering, each function is separated. The pcb is only responsible for carrying the keyboard matrix, RGB lines and a set of bare board power supply circuits. More fancy functions include but are not limited to RGBOLED screen human body. The radars are all handled by an additional PCB, which greatly reduces the cost of trial and error, reduces the cost of welding errors, and provides more excellent upgrade space.

　　6. Symmetry involves two strong double-sided pads. Each fixed pad is penetrated by a large number of via holes. The capillary effect is used to greatly enhance the firmness of the pads. Purchase m4 knurled studs to pass through the holes for soldering. , fixed very firmly, used to install CNC aluminum alloy feet in bare board mode.

　　7. Rich RGB interface, combined with my positioning plate, you can get the RGB effect of axis light + positioning plate down-shooting ambient light. There is also an RGB interface that allows you to add light strips.

　　8. The more optimized sinking plate typec is adopted. Now the typec will no longer hold up the positioning plate.

　   9. An encoder pad is added to the ESC position. You can choose to solder an EC11 encoder with a handle height of 15mm and a 2.54mm pitch through-hole pad. This is considered a pitfall. Someone with the ability can do it right on the pad. Modify the control board below and solder the spring probe. It should be able to realize the encoder function and adjust the RGB brightness and so on.

　　9. Update - the shell has been open source, in STL format, and can be printed directly. Please do not use it for commercial purposes. Infringement will be investigated.

——————————————The following is a formal explanation——————————————

Structurally includes:

　　Housing, main PCB, positioning board, control board, battery, others.

The shell is subdivided into:

　　Shell main body, shell bead, hardware screws

The control panel contains:

　　Control board main body, MCU core unit

Others include:

　　0.91-inch OLED screen, HW-07 human body sensing radar , COB warm light strip, K375S main control, and some FPC link cables.

Batteries include:

　　10000mah + 5000mah + 2*300mah , three sets of batteries, the first two sets are for RGB and other devices/main control power supply. Two 2*300mah micro batteries are embedded on both sides of the space bar. They are used for temporary power supply when using in bare PCB mode. The charging circuit is independently onboard on the main PCB and can only be charged through the typec interface on the main PCB. The above batteries are provided with hyperlinks for the convenience of purchasing the appropriate size.

There are four larger PCBs:

　　The main PCB positioning board PCB control board PCB MCU core PCB are all open source. For details of these PCBs, please see their respective homepages. In addition, there are some small FPC adapter pcbs, and the finished products can be purchased online.

Shell analysis:

　　The overall structure is a ship hull structure, with a total of nearly 15 screw posts reserved. After the PCB and the positioning plate are screwed together, some screws penetrate the PCB and screw with the embedded screw posts in the shell to fix it. Considering the assembly problem, There is a small "layer" that is separated from the main structure so that it can be installed into the PCB, and then the layer is installed. In fact, there is no force here and it does not have a pressing effect. It just looks like it. It seems to be pressed on the positioning plate, called a layer.

Hardware purchasing suggestions:

　　m2.5*6 copper double-way studs*15, m2.5*3 copper double-way studs*30, m2.5*5 copper double-way studs*15, m2*3 copper double-way studs Double-way studs*10, m1.4*3 copper knurled double-way studs* 10 , m2.5*6 screws 15 pcs, m2.5*12 screws 15 pcs, m2*6 cup head screws 5 pcs , 5 m1.4*12 cup head screws, m2.5 copper nuts*10, the above hardware is required for the shell.

　　m2.5 copper nut, the shell has been purchased, m2.5*3 nut*5, the above hardware is required for PCB.

　　The quantity mentioned above is only a lot more, not to mention the price is cheap, so buy more and be prepared. When copper is mentioned above, you must purchase the corresponding material. If you purchase stainless steel without authorization, you will be responsible for it. For any of the screws mentioned above, unless otherwise stated in the text, countersunk head screws will suffice. Considering that the printing error of the shell can be high or low, prepare your own strong glue in case of unexpected events.

K375S main control notes:

　　About purchase: Please note that the main control has two screw holes and an exposed pad. For the authentic master control, one screw hole and the exposed pad are copper-colored and adopt the immersion gold process. For the imitation master control, the screw holes are silver. The pads are also silver, so you can tell the authenticity at a glance.

　　Regarding fixation: Use the spring pin energization method to clean and flatten the main control power supply pad. Purchase HY255502 spring pins and embed them into the PCB. On the other side of the PCB, the protruding height of the bottom of the spring pins should be less than 1mm, and the protrusion should be within approximately 0.5mm. After soldering quickly, the molten tin will flow into the needle over time and the spring needle will be scrapped. On one side of the spring pin, there are two slotted pads that roughly correspond to the main control screw holes. Weld the copper nuts on them to allow fine adjustment of the nut position. After alignment, press the main control on and tighten the two screws. The fixation is completed and the power supply is started. It is worth noting that under the main control FPC connector, there is a lamp bead protruding from the PCB surface. Patience and care are required to polish off the protruding part. The circuit part of the lamp bead will not be damaged. The polished part is purely plastic. The other four Each welding leg also needs to be polished flat. The flatter it is, the more stable the installation will be.

　　Regarding FPC cables: Please purchase 30PIN 1MM spacing reverse cables. Cut the remaining 3pins by yourself. 27pin FPC is difficult to buy and expensive.

This project is provided for those with experience. It is not suitable for beginners to start with. The cost is high and the difficulty is high. I am about to take the postgraduate entrance examination, so I will not answer any questions .