You are here: start » interfaces » ds3231

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
interfaces:ds3231 [2016/04/09 13:59] – [DS3231 ZS-042] darroninterfaces:ds3231 [2018/03/11 16:08] (current) – [DS3231 for Pi] darron
Line 6: Line 6:
 There are at least two RTC modules containing the There are at least two RTC modules containing the
 DS3231 available from China. Both can operate with DS3231 available from China. Both can operate with
-the Raspberry Pi and one is designed specicially+the Raspberry Pi and one is designed especially
 for it. for it.
  
 One useful feature of the DS3231 other than keeping One useful feature of the DS3231 other than keeping
-the time is it's built-in temperature readout, however,+the time is its built-in temperature readout, however,
 initial tests suggest that this is inaccurate. initial tests suggest that this is inaccurate.
  
Line 20: Line 20:
  
 This device plugs directly into the GPIO header. This device plugs directly into the GPIO header.
 +
 +I bought two of these devices and one was faulty. Fixing it simply involved applying
 +pressure on each pin of the chip in turn with a hot iron, these devices may not be
 +manufactured to a high standard.
  
 === DS3231 ZS-042 === === DS3231 ZS-042 ===
  
-This module contains the RTC and an EEPROM. It tends +This module contains the RTC and an HK24C32 EEPROM. It tends 
-to ship with an incompatible CR2032 battery and as per +to ship with a CR2032 battery and, as the per 
-advice on many web sites, it's desirable to disable +advice of many web sites, it's important to desolder 
-the charge feature of the module (see schematic) when +the charge feature of the module (see schematic). 
-using this battery.+ 
 +By default the EEPROM content is 
 +<code> 
 +./mcp24 1 0x57 -d 
 +EEPROM FOUND AT 0x0057 
 +DUMP 
 +[0000] 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 |ABCDEFGHIJKLMNOP| 
 +[0010] 51 52 53 54 55 56 57 58 59 5A FF FF FF FF FF FF |QRSTUVWXYZ......| 
 +</code>