How to assemble the split-flap controller PCB

Рет қаралды 7,622

Күн бұрын

Tutorial on how to assemble the controller PCB for a DIY split-flap display module. Soldering is required, and this video assumes you have some experience already; if not, I'd recommend watching some tutorial videos first.
A completed DIY split-flap display that uses this controller can be seen here: • Random four-letter wor...
The component list and instructions for ordering parts can be found on the split-flap ordering guide here: paper.dropbox.com/doc/Orderin...
This entire project is open-source, so you modify/make the PCBs yourself, or I sell the blank PCBs in my Etsy store: www.etsy.com/listing/98003086...
Recommended assembly order:
- 0:29 4 WS2812b RGB LEDs - U5, U6, U7, U8 - center near A B C D labels
- ⚠️ Make sure to get polarity correct - LED notch aligns with right-angle silkscreen line - top left corner
- 1:02 Arduino pin headers (BOTTOM SIDE):
- 3 pin straight male header - “Arduino D4 D5 D6” label on bottom
- 2x3 Female header - ISP label on bottom
- 2 pin straight male header - VIN label on bottom
- 1:40 470 resistor (Yellow Purple Brown) - R9 (center top side, between the two MIC5842 spots)
- 2:10 Top left corner:
- 2 pin straight male header - JP1
- Yellow LED - D1 (Mot+) - ⚠️ make sure to get polarity correct - match flat side to silkscreen
- Green LED - D2 (5V)- ⚠️ make sure to get polarity correct - match flat side to silkscreen
- 2.2k resistor (Red Red Red) - R1
- 220 resistor (Red Red Brown) - R7
- 3:10 Capacitors:
- 100uF electrolytic capacitor - C1 - ⚠️ make sure to get polarity correct
- 100uF electrolytic capacitor - C3 - ⚠️ make sure to get polarity correct
- 0.1uF capacitor - C2 (to the left of “A” LED)
- 3:59 Sensor connectors (place all of these at once with a sensor cable plugged in across all 3 to ensure proper alignment when soldering)
- 4 pin straight male header - “GND” label
- 4 pin straight male header - “5V” label
- 4 pin straight male header - “A” and “D” labels
- 4:26 47k resistors (Yellow Purple Orange) - R3 R4 R5 R6 R10
- 4:54 Barrel Jack Connector - top right “5-12V” label
- 5:21 Motor connectors - P1 P2 P3 P4 - ⚠️ make sure to get polarity correct (match silkscreen)
- 5:49 ICs - make absolutely sure to get the polarity correct!!!!
- MIC5842 - U2 - ⚠️ make sure to get polarity correct (match silkscreen - notch facing left)
- MIC5842 - U4 - ⚠️ make sure to get polarity correct (match silkscreen - notch facing left)
- 74HC165 - U3 - ⚠️ make sure to get polarity correct (notch facing bottom - see right-angle silkscreen line near pin 1)
This is part of the documentation of how you can build your own split-flap display - check out the open-source project here: github.com/scottbez1/splitflap

Пікірлер: 17

@piperpa4272 3 жыл бұрын

Thank you Scott. I can't wait to have a working display. I just received my order of PCBs from Seeed Studio today.

@piperpa4272 3 жыл бұрын

I finally managed to collect the components needed and solder two boards. It was surprisingly easy, I'd never done any PCB or and soldering prior to this but I had no issues at all. If anybody in Europe needs some boards, either these or for the sensor, please let me know. It might be cheaper than buying a whole load from China.

@NickBontrager 4 жыл бұрын

This is fantastic, Scott! I can't wait to get a build going and may do a variant with mostly smd components for reflowing. I'll send you the files if I get that far!

@joasvdeerden 2 жыл бұрын

Did you manage to?

@g-lurk 9 ай бұрын

I tried your etsy link - do you have any more, or know where I can find a guide as good as this one with links to purchaseable components? 🥺🙏 thanks!

@nehalchandra7417 2 жыл бұрын

Can you please make a video of how can we connect 3 modules together and connect to Arduino

@lauticaceres7694 2 жыл бұрын

Hey, maybe this is a stupid cuestion but i'm new to all this world. If you have a big display and you want to comercialice it (like vestaboard for example), you have to sell it with the arduino inside? or another electronic takes care of all the work? (sorry for my english)

@scottbez1 2 жыл бұрын

Hi Lauti, great question! An Arduino is really just a convenient board for prototyping based around the ATmega328 microcontroller. To commercialize a product, you would generally not include an entire Arduino board and a shield, but instead create your own custom board. Your custom board might use the same core components (like the ATmega328) and also include everything you need from the shield too - this can make the entire assembly much smaller and cheaper since you can remove things you don't need from the Arduino (like pin headers, extra LEDs, etc). However, once you are designing your own board from scatch, it is often worthwhile looking at alternatives that may be cheaper, instead of just copying everything from the Arduino - for example, if your product doesn't need all the features of the ATmega328, you might choose to use a different microcontroller with fewer features instead to save money. There is an interesting middle ground between prototyping and mass-production: if you were to order all of the components of an Arduino yourself in small quantities, they would be substantially more expensive than if you just bought an Arduino (fully assembled!), because Arduinos are mass-produced and can benefit from economies of scale. So for a lot of small scale/hobby electronics, it's typically cheaper to just use the fully assembled Arduino as-is and design a custom "shield" to plug into it with whatever custom electronics you'd like to add. Hopefully that answers your question!

@denniss1618 3 жыл бұрын

thats just amazing !! is it possible to control more then 4 displays with multiple controllers on a single arduino ?

@scottbez1 3 жыл бұрын

You can connect 3 of these boards to a single Uno to control up to 12 modules. I'm currently working on a new electronics design that allows for even larger displays, hopefully 120+, using a single ESP32. I'll try to make a video about that soon.

@denniss1618 3 жыл бұрын

@@scottbez1 please keep me updated I'm in the slack group now as well would love to have one 4*10 display at home

@C.I... 3 жыл бұрын

@@scottbez1 Ooh, exciting!

@camdaman377 3 жыл бұрын

This is really cool, but if I wanted to make a larger board (say a 10x4) would I need to get a different PCB? Or is there a way I can daisy chain multiple boards?

@scottbez1 3 жыл бұрын

You can connect 3 of these PCBs together for 12 total modules from an Arduino Uno. I'm currently working on a new PCB designed for more chaining, using a more powerful microcontroller like an ESP32, with a goal of supporting at least 120 modules - this is called the Chainlink Driver. It's not ready for prime time yet, but you can read more about it on the project README github.com/scottbez1/splitflap#chainlink-driver , or join the slack group if you have more questions.

@camdaman377 3 жыл бұрын

@@scottbez1 awesome! Can’t wait to see what you come up with!