diff --git a/.markdown-link-check.json b/.markdown-link-check.json
index e29f85f2d3..5446bec56b 100644
--- a/.markdown-link-check.json
+++ b/.markdown-link-check.json
@@ -13,6 +13,7 @@
         { "pattern": "https://www.digikey.com/" },
         { "pattern": "https://www.aliexpress.com/" },
         { "pattern": "https://www.emvlab.org/tlvutils/" },
-        { "pattern": "https://hackaday.io" }
+        { "pattern": "https://hackaday.io" },
+        { "pattern": "https://www.tindie.com" }
     ] 
 }
diff --git a/src/devices/RGBLedMatrix/README.md b/src/devices/RGBLedMatrix/README.md
index 4cc27ecf24..a30f69ca22 100644
--- a/src/devices/RGBLedMatrix/README.md
+++ b/src/devices/RGBLedMatrix/README.md
@@ -6,7 +6,7 @@ RGB LED Matrix interface protocol is sometimes referred as `HUB75`.
 
 - 32x16 32x32 RGB led matrix [documentation](https://learn.adafruit.com/32x16-32x32-rgb-led-matrix/)
 - TLC59283 [datasheet](http://www.ti.com/lit/ds/symlink/tlc59283.pdf)
-- FM6124 [datasheet](https://datasheet4u.com/datasheet-parts/FM6124-datasheet.php?id=1309677) (diagram on page 3)
+- FM6124 [datasheet](https://datasheet.lcsc.com/lcsc/2108230930_Shenzhen-Fuman-Elec-FM6124_C2887410.pdf) (diagram on page 3)
 
 ## Usage
 
diff --git a/src/devices/Sht4x/README.md b/src/devices/Sht4x/README.md
index ce7d2bd94e..cf644dc31d 100644
--- a/src/devices/Sht4x/README.md
+++ b/src/devices/Sht4x/README.md
@@ -4,7 +4,7 @@ SHT4x is a temperature and humidity sensor from Sensirion. This project supports
 
 ## Documentation
 
-- SHT40 [datasheet](https://sensirion.com/media/documents/33FD6951/624C4357/Datasheet_SHT4x.pdf)
+- SHT40 [datasheet](https://sensirion.com/media/documents/33FD6951/63B52FAF/Datasheet_SHT4x.pdf)
 
 ## Usage
 
diff --git a/src/devices/Shtc3/README.md b/src/devices/Shtc3/README.md
index b5664b8245..762ddddc63 100644
--- a/src/devices/Shtc3/README.md
+++ b/src/devices/Shtc3/README.md
@@ -5,7 +5,7 @@ To reduce power cosumption this project use capability of sensor to allow measur
 
 ## Documentation
 
-- SHTC3 [datasheet](https://sensirion.com/media/documents/643F9C8E/6164081E/Sensirion_Humidity_Sensors_SHTC3_Datasheet.pdf)
+- SHTC3 [datasheet](https://sensirion.com/media/documents/643F9C8E/63A5A436/Datasheet_SHTC3.pdf)
 
 ## Usage
 
diff --git a/src/devices/Uln2003/README.md b/src/devices/Uln2003/README.md
index 6ba4053e50..b4ee430fc5 100644
--- a/src/devices/Uln2003/README.md
+++ b/src/devices/Uln2003/README.md
@@ -8,7 +8,7 @@ The 28BYJ-48 is a small stepper motor suitable for a large range of applications
 
 **[Stepper Motor 28BYJ-48]**: <http://www.geeetech.com/Documents/Stepper%20motor%20datasheet.pdf>
 
-**[ULN2003]**: <http://www.geeetech.com/Documents/ULN2003%20datasheet.pdf>
+**[ULN2003]**: <https://www.st.com/resource/en/datasheet/uln2001.pdf>
 
 ## Board