diff --git a/docs/changelog.md b/docs/changelog.md
index 0ab2c9e..c649e10 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1104,4 +1104,79 @@ Changelog updated 2019-10-30_18-51-54
 - Merge pull request #59, implement "fast" pin operations [view commit](http://github.com/pyr0ball/pyr0piezo/commit/bcc7b254848091533b7deb3d211f6bcc399fe6ba) 
 
 
+------------------------------------
+### v2.1.5 to v2.1.6
+
+Changelog updated 2019-12-28_03-43-10
+
+ *Added Features*
+
+- Adds support for inverting trigger logic.   [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5b8c409c109954ea520e5c1e6de9c1f0834889c2) 
+
+
+------------------------------------
+
+ *Bugfixes*
+
+- Fixed width of thermals on singledisk adapter  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/024c6f79111242985d1ce0a0b3ad4358f0d885bf) 
+
+- Fixed pad thermals, added url, fixed logo  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/041836b40b0e0d6fce617c9f73365e8ca9ecb076) 
+
+- Fix for gain adjustment  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/94e2c127951575f3847e72235969a1623eac13a4) 
+
+- fixing serial input not taking effect immediately  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/4076423e1babf8e6e45f1878481dfe42f29fe211) 
+
+
+------------------------------------
+
+ *Documentation Updates*
+
+- Documentation update for v2.1.5  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5d72861a36e1e76c1264d3bc8b02479edc6d3979) 
+
+
+------------------------------------
+
+ *Full Changelog*
+
+- Documentation update for v2.1.5  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5d72861a36e1e76c1264d3bc8b02479edc6d3979) 
+
+- These code changes are for resetting the config values to the default values by issuing the ERASE word via a serial terminal. [view commit](http://github.com/pyr0ball/pyr0piezo/commit/106e6c85c3c5f97e20d947a8b6ea3a6f8f30a268) 
+
+- Merge pull request #60 from klcjr89/master [view commit](http://github.com/pyr0ball/pyr0piezo/commit/9ae410f011c43e5bf4ccb902ef1734d0a61edb28) 
+
+- Fixed width of thermals on singledisk adapter  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/024c6f79111242985d1ce0a0b3ad4358f0d885bf) 
+
+- Fixed pad thermals, added url, fixed logo  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/041836b40b0e0d6fce617c9f73365e8ca9ecb076) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo [view commit](http://github.com/pyr0ball/pyr0piezo/commit/cd3503beb31c346c0f0f1a1cc53c6ba1a06c57a3) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/64550544467b6e2e5627938338ac63c5a39c5b9b) 
+
+- removed file that shouldn't be tracked [view commit](http://github.com/pyr0ball/pyr0piezo/commit/4f3558b79198da40932a678d410cca57b1e0d801) 
+
+- slight edit to platformio.ini, added dependencies [view commit](http://github.com/pyr0ball/pyr0piezo/commit/bc2de746b469d2f04452b55baafd523cc7e335da) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/407c9834d1c8e9db58041ba84cbe5064d64e20d8) 
+
+- Adds support for inverting trigger logic.   [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5b8c409c109954ea520e5c1e6de9c1f0834889c2) 
+
+- ignore [view commit](http://github.com/pyr0ball/pyr0piezo/commit/0d73cc55ef50b1bd11193d47e42e2f0afad97601) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo [view commit](http://github.com/pyr0ball/pyr0piezo/commit/e0ebe53efcb320a8ba2d552461838486075b0d3b) 
+
+- Fix for gain adjustment  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/94e2c127951575f3847e72235969a1623eac13a4) 
+
+- Merge branch 'develop' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/75776942085c672776ceaa32988dce46d45389a2) 
+
+- Merge pull request #63 from loredan/master [view commit](http://github.com/pyr0ball/pyr0piezo/commit/ecd472d80f0a7a46bc7a6d5eddbbe107c6ed22ed) 
+
+- Merge branch 'develop' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/d30c60639c6a0f82697a97257e89b2291526aa0e) 
+
+- fixing serial input not taking effect immediately  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/4076423e1babf8e6e45f1878481dfe42f29fe211) 
+
+- fixed accidental reversal of gain adjust #oops [view commit](http://github.com/pyr0ball/pyr0piezo/commit/3dcadb5e4ee9449eafdcd9f9861ba8b142373eb1) 
+
+- Revert "fixed accidental reversal of gain adjust #oops" [view commit](http://github.com/pyr0ball/pyr0piezo/commit/2e4cf0ce58e460622cf5e639a15f78481c319839) 
+
+
 ------------------------------------
diff --git a/docs/changelogs/changelog_2019-12-28_v2.1.5_v2.1.6.md b/docs/changelogs/changelog_2019-12-28_v2.1.5_v2.1.6.md
new file mode 100644
index 0000000..771e628
--- /dev/null
+++ b/docs/changelogs/changelog_2019-12-28_v2.1.5_v2.1.6.md
@@ -0,0 +1,71 @@
+###Pyr0-Piezo Changelog v2.1.5 to v2.1.6
+
+#### Added Features
+
+- Adds support for inverting trigger logic.   [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5b8c409c109954ea520e5c1e6de9c1f0834889c2) 
+
+
+------------------------------------
+
+#### Bugfixes
+
+- Fixed width of thermals on singledisk adapter  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/024c6f79111242985d1ce0a0b3ad4358f0d885bf) 
+
+- Fixed pad thermals, added url, fixed logo  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/041836b40b0e0d6fce617c9f73365e8ca9ecb076) 
+
+- Fix for gain adjustment  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/94e2c127951575f3847e72235969a1623eac13a4) 
+
+- fixing serial input not taking effect immediately  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/4076423e1babf8e6e45f1878481dfe42f29fe211) 
+
+
+------------------------------------
+
+#### Documentation Updates
+
+- Documentation update for v2.1.5  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5d72861a36e1e76c1264d3bc8b02479edc6d3979) 
+
+
+------------------------------------
+
+#### Full Changelog
+
+- Documentation update for v2.1.5  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5d72861a36e1e76c1264d3bc8b02479edc6d3979) 
+
+- These code changes are for resetting the config values to the default values by issuing the ERASE word via a serial terminal. [view commit](http://github.com/pyr0ball/pyr0piezo/commit/106e6c85c3c5f97e20d947a8b6ea3a6f8f30a268) 
+
+- Merge pull request #60 from klcjr89/master [view commit](http://github.com/pyr0ball/pyr0piezo/commit/9ae410f011c43e5bf4ccb902ef1734d0a61edb28) 
+
+- Fixed width of thermals on singledisk adapter  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/024c6f79111242985d1ce0a0b3ad4358f0d885bf) 
+
+- Fixed pad thermals, added url, fixed logo  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/041836b40b0e0d6fce617c9f73365e8ca9ecb076) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo [view commit](http://github.com/pyr0ball/pyr0piezo/commit/cd3503beb31c346c0f0f1a1cc53c6ba1a06c57a3) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/64550544467b6e2e5627938338ac63c5a39c5b9b) 
+
+- removed file that shouldn't be tracked [view commit](http://github.com/pyr0ball/pyr0piezo/commit/4f3558b79198da40932a678d410cca57b1e0d801) 
+
+- slight edit to platformio.ini, added dependencies [view commit](http://github.com/pyr0ball/pyr0piezo/commit/bc2de746b469d2f04452b55baafd523cc7e335da) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/407c9834d1c8e9db58041ba84cbe5064d64e20d8) 
+
+- Adds support for inverting trigger logic.   [view commit](http://github.com/pyr0ball/pyr0piezo/commit/5b8c409c109954ea520e5c1e6de9c1f0834889c2) 
+
+- ignore [view commit](http://github.com/pyr0ball/pyr0piezo/commit/0d73cc55ef50b1bd11193d47e42e2f0afad97601) 
+
+- Merge branch 'master' of https://github.com/pyr0ball/pyr0piezo [view commit](http://github.com/pyr0ball/pyr0piezo/commit/e0ebe53efcb320a8ba2d552461838486075b0d3b) 
+
+- Fix for gain adjustment  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/94e2c127951575f3847e72235969a1623eac13a4) 
+
+- Merge branch 'develop' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/75776942085c672776ceaa32988dce46d45389a2) 
+
+- Merge pull request #63 from loredan/master [view commit](http://github.com/pyr0ball/pyr0piezo/commit/ecd472d80f0a7a46bc7a6d5eddbbe107c6ed22ed) 
+
+- Merge branch 'develop' of https://github.com/pyr0ball/pyr0piezo into develop [view commit](http://github.com/pyr0ball/pyr0piezo/commit/d30c60639c6a0f82697a97257e89b2291526aa0e) 
+
+- fixing serial input not taking effect immediately  [view commit](http://github.com/pyr0ball/pyr0piezo/commit/4076423e1babf8e6e45f1878481dfe42f29fe211) 
+
+- fixed accidental reversal of gain adjust #oops [view commit](http://github.com/pyr0ball/pyr0piezo/commit/3dcadb5e4ee9449eafdcd9f9861ba8b142373eb1) 
+
+- Revert "fixed accidental reversal of gain adjust #oops" [view commit](http://github.com/pyr0ball/pyr0piezo/commit/2e4cf0ce58e460622cf5e639a15f78481c319839) 
+
diff --git a/mkdocs.yml b/mkdocs.yml
index 822f4c4..d89db93 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -87,6 +87,7 @@ nav:
     - Changelog:
       - Version List: 'changelog.md'
       - Logs:
+        - 'v2.1.5-v2.1.6': 'changelogs/changelog_2019-12-28_v2.1.5_v2.1.6.md'
         - 'v2.1.4-v2.1.5': 'changelogs/changelog_2019-10-30_v2.1.4_v2.1.5.md'
         - 'v2.1.3-v2.1.4': 'changelogs/changelog_2019-10-09_v2.1.3_v2.1.4.md'
         - 'v2.1.2-v2.1.3': 'changelogs/changelog_2019-09-25_v2.1.2_v2.1.3.md'