diff --git a/lambda-x2/readme.md b/lambda-x2/readme.md
index f5c6f40..ebc87df 100644
--- a/lambda-x2/readme.md
+++ b/lambda-x2/readme.md
@@ -1,12 +1,18 @@
+[Interactive Pinout](https://rusefi.com/docs/pinouts/lambda-x2/)
+
 
 See https://github.com/mck1117/wideband
 
 See https://rusefi.com/forum/viewtopic.php?f=4&t=2314
 
 
+
 * STM32F103 dual channel wideband AFR controller supporting Bosch LSU4.2, LSU4.9 or LSU_ADV.
 * CAN and analog output
 * x2 EGT input using MAX31855KASA or MAX31856
 * x2 auxilary analog input: 0..5V with pull-up or pull-down (configurable by soldering resistor). One can be used to source 5V to external sensor.
 * x2 2 auxilary output 0..5V. Also can be used for slow PWM signal output.
 * x2 open drain outputs: BTS3028 (5A)
+
+
+See also https://github.com/rusefi/rusefi/wiki/WBO