Key Features & Port Changes
Platform
Optimized for iOS 15.0+ and Swift 5.9
Transport
Fully rewritten using CoreBluetooth
Image Processing
Uses CoreGraphics and UIKit for bitmap conversion
Modern Architecture
Asynchronous API using Swift Concurrency (async/await)
Optimization
Checksum-free encoding for faster transmission
Compatibility
Supports D11/B21/B1 via Bluetooth or USB
Quick Start
Setup Example
Preview of Niimprint-Swift integration:
Swift
import UIKit
import Niimprint
import CoreBluetooth
class PrinterViewController: UIViewController {
private var printer: NiimprintClient?
override func viewDidLoad() {
super.viewDidLoad()
setupPrinter()
}
}Technical Specifications
Print Resolution & Constraints
Niimbot printers utilize a density of 8 pixels per mm (~203 dpi). Before sending data, ensure your UIImage matches the pixel constraints of the print head:
| Printer Model | Max Pixel Width | Approx. Physical Width |
|---|---|---|
| B21, B1, B18 | 384 px | 50 mm |
| D11 | 96 px | 15 mm |
Ready to Get Started?
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