diff --git a/platformio.ini b/platformio.ini
index 458b2675..edc0fb5e 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -57,3 +57,27 @@ lib_ignore =
     ESP32NetBIOS
     ESP32SSPD
     SdFat
+
+[env:esp01s_160mhz]
+platform = https://github.com/platformio/platform-espressif8266.git
+board = esp12e
+framework = arduino
+monitor_speed = 115200
+; set frequency to 160MHz
+board_build.f_cpu = 160000000L
+; set frequency to 40MHz
+board_build.f_flash = 40000000L
+board_build.flash_mode = dout 
+upload_resetmethod = ck
+board_build.ldscript = eagle.flash.1m256.ld
+build_flags = 
+    -D PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
+    -DNONOSDK221=1
+    -DNDEBUG
+    -DVTABLES_IN_FLASH
+upload_speed = 115200
+lib_ignore = 
+    AsyncTCP
+    ESP32NetBIOS
+    ESP32SSPD
+    SdFat