diff --git a/misc/git_scripts/git_add_upstream.bat b/misc/git_scripts/git_add_upstream.bat
new file mode 100644
index 00000000..ca1b51d3
--- /dev/null
+++ b/misc/git_scripts/git_add_upstream.bat
@@ -0,0 +1,3 @@
+git remote -v
+git remote add upstream https://github.com/rusefi/rusefi_documentation.git
+git remote -v
diff --git a/misc/git_scripts/git_pull_submodules.bat b/misc/git_scripts/git_pull_submodules.bat
new file mode 100644
index 00000000..a59fa05d
--- /dev/null
+++ b/misc/git_scripts/git_pull_submodules.bat
@@ -0,0 +1 @@
+git submodule update --init
\ No newline at end of file
diff --git a/misc/git_scripts/git_reset_to_upstream.bat b/misc/git_scripts/git_reset_to_upstream.bat
new file mode 100644
index 00000000..283a74f8
--- /dev/null
+++ b/misc/git_scripts/git_reset_to_upstream.bat
@@ -0,0 +1,4 @@
+git fetch upstream
+git checkout master
+git reset --hard upstream/master
+git push origin master -f
\ No newline at end of file
diff --git a/misc/git_scripts/readme.md b/misc/git_scripts/readme.md
new file mode 100644
index 00000000..9c932a56
--- /dev/null
+++ b/misc/git_scripts/readme.md
@@ -0,0 +1,5 @@
+
+The Windows Batch files are targeted at potential contributors who would fork rusefi/rusefi_documentation and work on their clone locally.
+
+
+These scripts require command line GIT client.
\ No newline at end of file
diff --git a/misc/selecting_open_source_ecu_microcontroller.md b/misc/selecting_open_source_ecu_microcontroller.md
new file mode 100644
index 00000000..03e46b22
--- /dev/null
+++ b/misc/selecting_open_source_ecu_microcontroller.md
@@ -0,0 +1,27 @@
+
+As of Jan 2019 we still like Cortex-M a lot stm32, here are the reasons: Performance, Availability,
+Toolchain, Hardware API.
+
+1. **Performance** - stm32 gives us 160MHz and close to 200Kb of RAM with floating point unit.
+
+2. **Availability** stm32 is cheap and readily available in low quantity both just chips and convenient dev boards
+
+3. **Toolchain** Free GNU Arm Embedded Toolchain allows us to compile and debug software
+
+4. **Hardware API** ChibiOS Hardware Abstraction Layer allows us to not spend too much time debugging low level peripheral registers
+
+One of the things we do not like about smt32 Cortex-M is the fact that this family is not automotive and not based on 5 volts.
+In an ideal chip we would like to see 5v ADC and maybe more hardware timers. 
+
+
+We've looked into a few other chips but so far have not found a better overall platform.
+
+Relevant forum threads:
+
+S32K148 https://rusefi.com/forum/viewtopic.php?f=13&t=816
+
+SPC563Mx, MPC563x - this one has some ChibiOS support - https://rusefi.com/forum/viewtopic.php?f=13&t=429
+
+TMS570 - https://rusefi.com/forum/viewtopic.php?f=13&t=407 & https://github.com/rusefi/rusefi/issues/89
+
+(in Russian) https://rusefi.com/forum/viewtopic.php?f=8&t=269
\ No newline at end of file
diff --git a/misc/solenoid_diode_wiring.png b/misc/solenoid_diode_wiring.png
new file mode 100644
index 00000000..e2cccbba
Binary files /dev/null and b/misc/solenoid_diode_wiring.png differ