I kept the static method I’d written for having a single, unique lock and changed it to create a single, unique dispatch queue. The static method, however, introduced a new issue I’d overlooked: upon logging out of the app, the queue would persist while the code blocks it ran tried to access deallocated data. This new issue finally pushed me to use an even higher level concurrency abstraction, NSOperationQueue (see Apple’s documenation for more details). NSOperationQueues are built on top of GCD but provide several extra features, including the ability to cancel operations. Moving printer communication code to an NSOperation subclass was a small amount of extra work that paid big dividends. By storing the operation queue as an instance variable on the print controller, I was able to cancel all waiting printing and printer discovery operations and deallocate the queue itself in just a few lines of code.
STAR MICRONICS 39472310 TSP143UIII ECO Thermal Receipt Printer KIT with AUTO-CUTTER and USB Interface. Compatible with Square Stand. Includes USB and Power Cables. Printer Drivers Included In The Box, Color: DARK GRAY (TSP143U-GRY), 39472310 $287.56 $214.60
( FREE 58mm Paper Roll is included!). Support Cash Drawer driving, connect cash drawer with RJ11. Connector Cable(RJ11 cable is not included.). Drawer made from robust Steel. ★★★★★. 1 X Cash drawer wi…
I do not nor do I need a receipt printer. All I want is a USB cash drawer that costs less than $235. Square, if you’re reading this, please add support for a wider variety of USB cash drawers. Your focus is small businesses. Not sure why you have only the most expensive cash drawer (more than 2x the Price of the Square Stand) as the only USB one supported). Surely it can’t be that hard to come up with new drivers?
I know that the Square corporate line is that the APG Vasario VB554A-BL1616  is the only USB cash drawer that works with the Square Stand hub (which means you don’t need a printer, which is what I want). I am wondering if anyone has experience using a different, less expensive USB drawer with the Square Stand and USB hub?
Star Micronics TSP100GT Fast, reliable thermal printing is a snap with the Star Micronics TSP100GT. This printer offers additional configuraiton, including embedded graphics and logos, adding flair to retail receipts. The TSP100GT supports iPhones as well, giving you an option for receipt printing with your mobile POS installation.
The following hardware accessories are compatible with Square Stand. All hardware connecting directly to the Square Stand but will connect to the stand via USB. Note that with Square Stand you can use either a cash drawer that plugs into the receipt printer or one that plugs into the USB block of the Square Stand. We recommend using the printer connection since the printer connected cash drawer is simpler and less expensive than the USB version.
It has 5 bill trays, 5 coin trays and a bill entry, keeping your money organized and largely improve your working efficiency and accuracy. Electronic Cash Drawer There are 5 bill trays and 5 coin tray…
Edit to say that the network issues I mentioned were tied to the wireless router we were using. Replaced that piece and the printer started working great. I still recommend purchasing as a package for better price and customer service, but not a bad piece of equipment.
This is an impact printer. So it makes a noise when it prints. Why would you want this? You might want it if you are in an area such as a kitchen where thermal paper receipts don’t print as well because of moisture in the area. You would not want this noise around customers. But if you have a moist area such as a busy kitchen this impact printer may be what you can use. Here is the user manual for the Star Micronics SP742ML.
SM-T300i Mobile Printer (SM-T300I2-DB50 US GRY), 3-Inch Print Width, Bluetooth 2.0, Serial Interface, (Includes Serial Cable, Battery Pack, AC Charger, Sample Paper Roll), Color: Gray (Part Number: 39634010)
Square Register Star TSP100III Thermal Receipt Printer with Auto-Cut, Ethernet Interface 10/100BaseT (LAN), Internal Power Supply, Includes TSP143IIILAN, Power Cable, Ethernet Interface Cable, Mounting Kit, Paper Roll, Dark Grey Color – TSP143IIILAN GY US – 39464910
I am sure that this has been asked and answered, but the search feature on this communities site is not very robust and the information I’ve been able to gather from square/communities is not entirely clear. So I am asking again (maybe).
This video takes a look at which receipt printers you can use with Square and the Square Stand with iOS, and which printers are best for your business. The USB printers can ONLY print with the Square Stand. We go over the TSP100, TSP100ECO, TSP100III, SM-S220i, and SP700. For more information on these printers, see our Square Compatible Receipt Printers article: https://posguys.com/blog/product-info…
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As VanKalkerFarms answer states, Point of Sale is not compatible with standard desktop printers at this time. A possible solution might be to view your receipts on your online Dashboard after the transaction is complete and you can print them from there on a desktop printer. 
Native Technology, Inc. is a third-party hardware reseller and is in no way affiliated with Square, Inc. Native Technology offers POS hardware that is compatible with the Apple iPad and Square, Inc. products. Square, the Square logo, Square Register, and Square Reader, are registered trademarks or trademarks of Square, Inc. iPad™ is a trademark of Apple Inc. iPod touch®, and iPhone® are registered trademarks of Apple Inc.
I’m a software engineering intern at Square and have been working on Bluetooth printer support for iPad. This feature was released in our latest Square Register build and brings physical receipt printing using Star printers to a mobile customer base. Before this version, Register for iPad supported printed receipts through Star printers connected by WiFi and USB. Adding support for a new type of printer was a great choice for an intern project as it was a combination of building off of an existing hardware integration layer and extending it to support new concurrency requirements. Integrating this new feature into Square’s codebase was a great lesson of how a well-designed code base can make writing new code easier.
If you accept credit card payments from your customers at your place of business, you’ll want a receipt printer. A receipt printer automatically prints a receipt for your customer when they make a purchase.
POS-X CD16 Electronic Cash Drawer, 15.9″(W) x 16.7″(L) w/ CANADIAN 8coin/4bill cash tray insert and DUAL MEDIA SLOTS, Painted Face – Includes STAR Receipt Printer Interface Cable and 2 Keys. COLOR: BLACK, CC-410-B2-C $119.51 $89.19
Square Register Star TSP654 LAN Thermal Receipt Printer with Auto-Cut, Ethernet/LAN Interface, Dark Grey Color, No Power Supply, No Interface Cable – TSP654L-24GRY – 37999540 **TSP654L-24GRY has been Discontinued – Replace with TSP654IIE3-24 GRY**
You can add your logo and text to your receipt. This is done with software that is included with the receipt printer. By adding your logo to your receipts you have a place to advertise your business. You can also put your phone number on your receipt or your website URL. This is a good thing to do if you’re selling at a craft show, fair, farmers market and etc. The customer may not remember your name and may not go online to search for your website. But if you put your website on the receipt you have a better chance of the customers visiting your website to make a purchase.
You may plug a receipt printer into one of the three USB ports found on the Square Stand accessories hub, but kitchen printers are typically located some distance away from your checkout register – farther away than a USB cable will reach.
Everything you need to get started taking in orders and money (except the iPad and the cash for the till!). Includes, Square credit card reader,  receipt printer with Ethernet interface, 2 rolls of receipt paper, 13″ wide cash drawer with till, and all cables for connecting the printer and cash drawer.
The STAR MICRONICS TSP654IIBI is fast and easy to configure. It is Apple MFi certified. It has auto connect and so it will connect to your iPad automatically. If you want to setup your receipt printer fast, this may be one of the best options. There is no serial cable, ethernet cable or USB connection. That seems like a positive benefit. If you move around a lot or you don’t want to mess with cables the STAR MICRONICS TSP654IIBI may be want you want.
A simple print button on the tablet application would allow us to connect to a local or network printer and print the same form data. Why is this still impossible? Why can we still not utilize our desktop or local printers to print receipt data from the app? 
The new Square Contactless and Chip Reader is included so you can accept every way your customers want to pay. Place the reader in the dock, connect the dock to the USB hub, and you’re ready for business. Accept magstripe cards, chip cards, and NFC payments like Apple Pay.
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SQUARE and SHOPIFY POS BUNDLE INCLUDES: • Square and Shopify recommended Star Micronics TSP654IIBI-24 Wireless/Bluetooth receipt printer. • Shopify/Square recommended printer driven 16X16 Cash Drawer. Comparable to APG 16×16 Vasario Series Cash Drawer Part #: VB320-BL1616 The compact footprint fits easily on your countertop and saves precious counter space. The clamshell design allows for fast and easy paper and ribbon loading. This printer can print 60 receipts per minute via Bluetooth connection, so you can tackle your daily needs with ease and efficiency. Pair it to your Shopify POS without a Wi-Fi connection. Need more counter space? Mount the printer to the wall with the included wall mount bracket. • Avoid complicated network setups – simply sync via Bluetooth, and you’re ready to print receipts from your iPad. • Uses thermal printing technology, so you’ll never need expensive ink or toner. • The Retail Package upgrade is required for this to connect to Shopify POS. Recommended for merchants who are looking for an easy to set up, reliable receipt printer.
Connect your Square Stand with a compatible iPad and recommended hardware accessories to help run your business. Before purchasing a Square Stand, make sure you’re using a supported iPad. You can identify your iPad model on Apple’s Support site.