Differences

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

--- tool_access_controllers [2024-11-04 22:10] – [Enclosure and Wiring] tim
+++ tool_access_controllers [2025-07-15 19:22] (current) – [Other Components] tim
@@ Line 63: / Line 63: @@
 | 20x4 LCD module with I2C backpack | by convention we use black text on a yellow backlight, which is more readable than white on blue |
-| [[https://www.elechouse.com/elechouse/index.php?main_page=product_info&products_id=2276|PN532 NFC module]] | Buy direct from Elechouse, clones have poor read range and a high failure rate |
+| [[https://www.elechouse.com/product/pn532-nfc-rfid-module-v4/|PN532 NFC module]] | Buy direct from Elechouse, clones have poor read range and a high failure rate |
 | Two push buttons | CPC SW03314, but others can be used |
 | Current transformer | [[https://www.ebay.co.uk/sch/DL-CT08CL5-20A|DL-CT08CL5-20A]] plus 33R burden resistor |