Merge branch 'master' of https://github.com/furrtek/PrecIR

README.md

@@ -1,47 +1,48 @@
 # PrecIR
 
-Collection of tools, their source code and design files for communicating with **infrared based** Electronic Shelf Labels.
+Collection of software and hardware tools, their source code and design files for communicating with **infrared based** Electronic Shelf Labels.
 
-See http://furrtek.free.fr/index.php?a=esl for more details.
+See http://furrtek.free.fr/index.php?a=esl for reverse-engineering of the system, the protocol and electronics.
 
 Thanks to [@david4599](https://github.com/david4599) for infos about color tags.
 
 ## Hardware
 
-* ir_tx_serial: Simple DIY serial port transmitter, using an USB-serial cable.
-* esl_blaster: Newer USB transmitter/remote. Build it yourself or buy it from [Tindie](https://www.tindie.com/products/furrtek/esl-blaster/).
+* ir_tx_serial: Simple DIY serial port transmitter, requires an USB-serial adapter.
+* esl_blaster: Compact USB transmitter/remote. Build it yourself or buy one from [Tindie](https://www.tindie.com/products/furrtek/esl-blaster/).
 
 ## Tools
 
-* img2dm.py: Sends an image to a dot matrix ESL. Run without parameters for usage.
+* img2dm.py: Sends an image to an e-paper ESL. Run without parameters for help.
 * rawcmd.py: Send arbitrary data to ESL.
-* flashtest.py: Test tool to program remote control frame in ESL Blaster (more work needed...).
-
+* setsegs.py: Set display of segment ESL.
+* flashtest.py: Test tool to program the remote control frames of the ESL Blaster (more work needed).
 * vb6: Windows GUI client and VB6 source (sorry).
+* PriceHax: Android app, doubles as a barcode scanner for quick ESL updates.
 
 ## FAQ
 
 ***What can this be used for ?***
 
-To have fun experimenting with mass produced devices ! Compatible ESLs can be found on eBay, or sometimes from stores directly if dumpster diving is your thing.
+To have fun experimenting with mass produced devices ! Compatible ESLs can be found on eBay, or directly from stores shelves ;)
 
-The e-paper ones make cool badges :)
+The e-paper ones can make cool badges:
 
 ![DM badge](dm.jpg)
 
 ***Which brands of ESLs are compatible ?***
 
-You'll have to guess from the picture. Hint: there's only one.
+You'll have to guess from the picture and the page on my website. Hint: there's only one.
 
 ***Can my phone/tablet/handheld/IrDA-capable device work as a transmitter ?***
 
-No. The carrier is in the MHz range and the symbol timing must be very precise. IrDA controller limitation or OS latency makes it impossible.
+No. The carrier is in the MHz range and the symbol timing must be very precise. IrDA controller limitations and OS latency makes it impossible.
 
 ***Can I change the display of all ESLs in a store at once ?***
 
 No. For two reasons:
 * Unlike radio waves, optical communication must be line-of-sight. Even if the walls are painted white, reflections from an unique transmitter has no chance of reaching all of the hundreds or thousands of ESLs in a store.
-* Each ESL has an unique address and must be specified individually to be updated, there's no known way to broadcast display updates.
+* Each ESL has an unique address which must be specified in update commands. There's no known way to broadcast display updates.
 
 ***Is possession and use of such devices legal ?***