I’d like to take a step back from discussing integration challenges to mention a few examples from the Square Register code base that made my life easier for this project. The code separates operations looking for connected peripherals and interacting with them and uses abstract superclasses to provide a consistent API to the rest of the app. Because the code was so robust, my new printer code fit well into the rest of the app, and existing code used by other printers fit well into my own new code. One good example is our receipt image renderer. The renderer works by putting data into an HTML document styled by CSS, rendering that HTML into an unseen web view and then rendering the view into PNG image data that can be sent to the printer. The HTML and CSS scale to fit different-sized windows and thus are a good generalizable solution for multiple print widths. All of the printers that we had previously supported (WiFi and USB printers) printed three-inch wide receipts. However most of the Bluetooth printers I worked with use two-inch wide paper. Thanks to the flexibility of our renderer, all I had to do was set the correct print width of a printer and voilà — the receipts were seamlessly resized and looked great.
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**
Drawer made from robust Steel. 1 x Cash drawer with RJ11 cable. Thermal Receipt Printer. THERMAL RECEIPT PRINTER. 1 Fixed mount(1 Saddle stande with one turning axis, 1 Link pole with one Nut Sheath, …
I spent years in jobs that included lots of cash handling. This cash drawer is the nicest I’ve seen. It’s solid build will last for years and its finish is just lovely. It triggers cleanly and the drawer all but shoots out when triggered. I’m very pleased.
EASY INTEGRATION – Star Micronics Printer and Cash Drawer Easily integrate with Square POS system. STAR MICRONICS RECEIPT PRINTER – Integrates easily with Square POS. Comparable to APG 16 x 16 Vasario…
STAR MICRONICS 39336532 SP742ME Receipt/Kitchen Printer, Impact Dot Matrix, 4.7 lps print speed, ETHERNET Interface, with AUTO-CUTTER and Internal Universal Power supply. Order Printer Cable Separately. Color: GRAY (replaces 39336531), 39336532 $367.23 $274.06
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
APG CASH DRAWER VB554A-BL1616 Vasario Cash Drawer, USB INTERFACE, Painted Front with Dual Media Slots, 16.2”W x 16.3”D x 4.3”H, Adjustable Width Slots, 5 bill/5 coin till. COMPATIBLE WITH SQUARE STAND. Color: BLACK, VB554A-BL1616 $322.78 $240.88
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.
@usascottwright – While we don’t currently support Epson printers, it’s definitely a popular feature request. I’ll update this thread if that changes in the future! Also, apologies for the delay in following up with you. 
If your customer entered an email address to receive a receipt from a Square merchant in the past, they may already be opted in to automatic receipts. These customers won’t be asked to enter their contact information after a sale, and a receipt will automatically be sent to their preferred email address. 
With resistance to the most brutal environments, APG drawers feature sturdy steel frames powder coated in cloud white or black to resist scratches and other external abuse. Industrial grade steel ball bearing slides on the drawer won’t wear like silicon wheels and promote silky smooth opening and closing every time. The heavy duty latch mechanism is rated for over 4 million operations, allowing you to open the drawer 200 times a day, every day, for nearly 55 years.
With your choice of one or two under till media slots, the Series 4000 makes safely storing receipts, large bills, or other important media a snap. The spacious heavy duty till features coated bill stays and stronger than average dividers, so you can be sure your money stays put.
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).
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My first inclination, having just taken a class in C++ using pthreads, was to simply use locks. I created a shared NSLock through a class method and locked before listening and printing, as described in Apple’s Threading Programming Guide. I was excited when it accomplished the mutual exclusion I wanted, but my coworkers were less thrilled about using such a low-level solution given the higher level abstractions available in iOS. In search of a higher-level solution, I replaced the global concurrent queue on which I was running the printer code with a serial dispatch queue, allowing only one block to be run at once. I was getting warmer, but my new solution still raised some concerns.
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?
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Star Micronics TSP100 futurePRNT is the first all-in-one receipt printer. Yes, all the parts and software are included in one box. To get you setup quickly, we’ve included an internal power supply, interface cable, power cable, complete mounting kits and a paper roll. To bring you the future of receipt printing now, we’re also including a full set of software utilities. Redesign your receipt without modifying your application. Add your logo. Add coupons. Preview receipts and enhance bar codes. Included operating system drivers allow for ‘Plug & Play’ automatic installation.

Learn more.
Plan term and select coverage begins date of purchase and is inclusive of the manufacturer’s warranty. All other coverage begins after the manufacturer’s warranty expires. Plan is fully refunded if canceled within 30 days.
Square Point of Sale (formerly Register) is the free point-of-sale app that gives you everything you need to run and grow your business. Accept debit and credit cards with a Square Reader for magstripe, and accept EMV chip cards and Apple Pay with the Square Reader for contactless and chip. Funds are deposited fast—see money in your bank account in one to two business days. Use your point of sale system to keep track of sales and inventory in real time, manage items and employees, and view analytics about your business. All this with no long-term contracts or surprise fees.
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Note that you may connect a barcode scanner via USB cable to the Square Stand, but if you are using an iPad without Square Stand, the barcode scanner must be a bluetooth barcode scanner. For more information on the correct bluetooth scanner to use when connecting directly to an iPad, click here.
Kitchen printers are typically impact printers. They use a ribbon in the printing process. Impact printers are not affected by heat and are therefore best suited for use in places like kitchens. Impact printers, (called dot matrix printers), use an ink ribbon to print on regular paper. The Star Micronics SP742 is an ideal printing solution for the kitchen. This fast, two-color printer offers crisp, easy to read type for quick viewing, a clamshell design for easy paper loading and an embedded power supply for space efficiency.
The TSP143UII ECO thermal receipt printer is directly supported in Square Stand and is both fast and reliable. This receipt printer can print as many as 30 six inch receipts per minute. The Mean Cycles Before Failure (MCBF) is 60 million lines and the Guillotine Auto cutter of 1 Million cuts. It has a clamshell design that allows for very fast and easy paper loading. There is no need to download drivers or utilities – they’re all included in the box. The futurePRNT Receipt Redisign Software allows you to customize and brand receipts – to help you keep customers coming back time and time again with professional graphics (logos, coupons, and merge images), word-triggered advertising, and more! It is also included on installation CD and is free and simple to use. In fact, the TSP143UII ECO thermal receipt printer comes complete with everything you need including: printer, power supply, USB cable, wall bracket – even a sample (partial) roll of thermal paper to get you started.
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
POSGuys.com Square Stand POS Kit The Square Stand point of sale kit leaves the guess work out of purchasing compatible hardware that is reliable and looks fantastic with the Square Stand. These kits are designed for customers who need every part to just a few pieces to make a complete Square Stand register.
We really like the Apple MFi certification with the auto connect feature. We also like the small footprint of this receipt printer. Overall this is one easy and fast printer to setup. The Apple MFi makes it real easy. You just turn the printer on within range of your iPad.