add 6 new md file and schematics

docs/en/faq.md

@@ -24,7 +24,7 @@
 <div class="container">
   <button type="button" class="btn btn-primary" data-toggle="collapse" data-target="#Q2">answer</button>
   <div id="Q2" class="collapse">
-    Add the following statement to functioin Setup( ){ }
+    Add the following statement to function Setup( ){ }
 
     ```arduino
     dacWrite(M5STACKFIRE_SPEAKER_PIN, 0);

docs/en/module/faces_finger.md

@@ -0,0 +1,74 @@
+# Module FACES FINFER {docsify-ignore-all}
+
+<img src="assets/img/product_pics/module/faces_finger/faces_finger_01.jpg" width="30%" height="30%"> <img src="assets/img/product_pics/module/faces_finger/faces_finger_02.jpg" width="30%" height="30%">
+
+***
+
+:memo:**[Description](#Description)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:electric_plug:**[Schematic](#Schematic)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-New-Arrival-GOPLUS-Module-with-MEGA328P-IR-Transmitter-and-Receiver-suit-for-ESP32-Kit/3226069_33010785963.html?spm=2114.12010615.8148356.1.a8747842Ll7Apb)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:octocat:**[Code](#Code)**
+
+
+## Description
+
+**FACE-FINGER** is another FACES kit compatible panel, with the fingerprinter recognition module on it. Same as FINGER units, FACE-FINGER integrated the FPC1020A capacitive fingerprint recognition module and Fingerprint recognition algorithm chip. 
+<br>
+It can identify fingerprint information entrance, fingerprint deletion, fingerprint search, feature extraction for multiple people and so on. The unit also can be set fingerprint recognition comparison level and different security level. With FACES panel, you can have an upgrade level of Fingerprint management machine with a more complete and enclosed pattern.
+
+<img src="assets/img/product_pics/module/goplus/goplus_p3.jpg" width="30%" height="30%"><img src="assets/img/product_pics/module/goplus/goplus_p4.jpg" width="30%" height="30%">
+
+
+Communication Protocol: UART.
+
+## Product Features
+
+-  FACES bottom compatible
+-  Interface Serial： UART2 (16/17)
+-  FPC1020A
+    - Size sensing array: 192*192 Pixel
+    - Pixel resolution: 256 grayscale levels (8 Bit)
+    - The supply voltage VDD:  typical 1.8 V
+    - TX Supply voltage Internal generated: <3.3 V
+    - Supply current image: Typical ~5 mA
+    - Supply current sleep mode: Typical when detecting finger 10 µA
+    - Supply current deep sleep: Typical <10 µA
+    - Clock frequency: Serial SPI communication <12 MHz
+    - Operating temperature: - 40 … + 85 °C
+    - Storage temperature : - 40 … + 85 °C
+    - Resolution: 508 DPI
+
+## Include
+
+-  1x M5Stack GoPlus Module
+
+## Schematic
+
+<img src="assets/img/product_pics/module/faces_finger/faces_finger_04.jpg">
+<img src="assets/img/product_pics/module/faces_finger/faces_finger_05.jpg">
+
+### PinMap
+
+<table>
+<tr><td>M5Core</td><td>U2RXD(16)</td><td>U2TXD(17)</td><td>5V</td><td>GND</td></tr>
+ <tr><td>FINGER Unit</td><td>TXD</td><td>RXD</td><td>5V</td><td>GND</td></tr>
+</table>
+
+
+## Document
+- 
+- Protocol **[FINGER series communication protocol](https://github.com/m5stack/M5-Schematic/blob/master/Units/finger/biovo_fingerprint_Protocol_en.DOC)**
+
+- Datasheet **[FPC1020](http://www.shenzhen2u.com/doc/Module/Fingerprint/710-FPC1020_PB3_Product-Specification.pdf)**
+
+
+## Code
+
+- Driver firmware - **[GoPlus](https://github.com/m5stack/GoPlus/tree/master/src)**
+
+- Test Code - **[GoPlus](https://github.com/m5stack/GoPlus/tree/master/test)**
+
+## Application
+- Time card punching machine
+- Security
+
+## Video
+
+- **[Demo Video](https://www.youtube.com/channel/UCozgFVglWYQXbvTmGyS739w)**

docs/en/module/faces_rfid.md

@@ -0,0 +1,69 @@
+# Module FACES RFID {docsify-ignore-all}
+
+<img src="assets/img/product_pics/module/faces_rfid/faces_rfid_01.jpg" width="30%" height="30%"> <img src="assets/img/product_pics/module/faces_rfid/faces_rfid_02.jpg" width="30%" height="30%">
+
+***
+
+:memo:**[Description](#Description)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:electric_plug:**[Schematic](#Schematic)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-New-Arrival-GOPLUS-Module-with-MEGA328P-IR-Transmitter-and-Receiver-suit-for-ESP32-Kit/3226069_33010785963.html?spm=2114.12010615.8148356.1.a8747842Ll7Apb)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:octocat:**[Code](#Code)**
+
+
+## Description
+
+**FACE-RFID** is another FACES kit compatible panel, with the Radio frequency identification on it. Same as RFID units,  it is MFRC522-based. The MFRC522 operates in the 13.56MHz frequency band and uses the modulation and demodulation principle to interact with the proximity RF card. 
+<br>
+This unit can realize the function of the card reading and writing device, to identify and record multiple card information, to encode and authority an RF card. With FACES panel, you can have an upgrade level of RFID device with a more complete and enclosed pattern.
+
+
+<img src="assets/img/product_pics/module/goplus/goplus_p3.jpg" width="30%" height="30%"><img src="assets/img/product_pics/module/goplus/goplus_p4.jpg" width="30%" height="30%">
+
+
+Communication Protocol: I2C.
+
+## Product Features
+- FACES bottom compatible
+- Interface Serial： UART2 (16/17)
+-  MFRC522:
+    - Operating frequency: 13.56 MHz
+    - I2C data rate: Fast mode: up to 400 Kbit/s; High-speed mode: up to 3400 Kbit/s
+    - RC522 Transceiver Buffer: 64 bytes
+    - Supported protocol: ISO14443A, MIFARE, and NTAG
+    - Operate temperature: -20℃-85℃
+    - How long data be saved for > 10 years
+    - Reading and writing distance: < 8 cm
+    - Program Platform: Arduino, UIFlow(Blockly, Python)
+    - Two Lego installation holes
+
+## Include
+
+-  1x M5Stack GoPlus Module
+
+## Schematic
+
+<img src="assets/img/product_pics/module/faces_rfid/faces_rfid_04.jpg">
+
+### PinMap
+
+<table>
+<tr><td>M5Core</td><td>SCL(22)</td><td>SDA(21)</td><td>5V</td><td>GND</td></tr>
+ <tr><td>FACES RFID</td><td>SCL</td><td>SDA</td><td>5V</td><td>GND</td></tr>
+</table>
+
+
+## Document
+
+- Datasheet **[MFRC522](**http://www.shenzhen2u.com/doc/Module/Fingerprint/710-FPC1020_PB3_Product-Specification.pdf**)**
+
+
+## Code
+
+- Driver firmware - **[GoPlus](https://github.com/m5stack/GoPlus/tree/master/src)**
+
+- Test Code - **[GoPlus](https://github.com/m5stack/GoPlus/tree/master/test)**
+
+## Application
+- Reader­-Tag
+- Security
+
+## Video
+
+- **[Demo Video](https://www.youtube.com/channel/UCozgFVglWYQXbvTmGyS739w)**

docs/en/unit/acc.md

@@ -0,0 +1,113 @@
+# Unit ACC {docsify-ignore-all}
+
+<img src="assets/img/product_pics/unit/acc/acc_01.jpg" width="30%" height="30%"><img src="assets/img/product_pics/unit/acc/acc_02.jpg" width="30%" height="30%">
+
+***
+
+:memo:**[Description](#Description)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:octocat:**[Example](#Example)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :electric_plug:**[Schematic](#Schematic)** &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-ADC-Unit-16-Bit-I2C-GROVE-ADS1100-Module-0V-to-12V-analog-to-digital/3226069_32946953374.html?spm=a2g1x.12024536.productList_5885013.pic_7)**
+
+## Description
+
+**ACC** is a motion sensor Unit. Integrated with ADXL 345, ACC is able to obtain 3- axis of Acceleration. ADXL 345 is a small, thin, ultralow power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either an SPI (3- or 4-wire) or I2C digital interface. In this Unit, we used I2C series interface. 
+<br>
+
+*What is an accelerometer?*<br>
+An accelerometer is an electromechanical device that will measure acceleration forces. These forces may be static, like the constant force of gravity pulling at your feet, or they could be dynamic - caused by moving or vibrating the accelerometer.
+<br>
+*What are accelerometers useful for?*<br>
+By measuring the amount of static acceleration due to gravity, you can find out the angle the device is tilted at with respect to the earth. By sensing the amount of dynamic acceleration, you can analyze the way the device is moving. At first, measuring tilt and acceleration doesn't seem all that exciting. However, engineers have come up with many ways to make really useful products with them.
+
+
+
+### Product Features
+
+- feature:
+- Tiny
+- ultralow power
+- 3-axis accelerometer
+
+## Include
+
+- 1x ADC unit
+- 1x GROVE Cable
+- 1x HT3.96 Male Socket(2 pins)
+
+## Application
+
+- Building and structural monitoring
+- Navigation
+- Orientation sensing
+
+
+
+## Dcumentation
+
+- Datasheet - **[ADS1100](http://pdf1.alldatasheet.com/datasheet-pdf/view/619024/TI1/ADS1100.html)** 
+- M5Stack Community - **[Forum](http://forum.m5stack.com/)**
+  
+## Schematic
+<img src="assets/img/product_pics/unit/acc/acc_04.jpg">
+
+### PinMap
+
+<table>
+ <tr><td>M5Core ( GROVE A )</td><td>GPIO22</td><td>GPIO21</td><td>5V</td><td>GND</td></tr>
+ <tr><td>ACC Unit</td><td>SCL</td><td>SDA</td><td>5V</td><td>GND</td></tr>
+</table>
+
+## EasyLoader
+
+<img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/EasyLoader_logo.png" width="100px" style="margin-top:20px">
+
+<a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/Unit/EasyLoader_ADC.exe"><button type="button" class="btn btn-primary">click to download EasyLoader</button></a>
+
+>1.EasyLoader is a simple and fast program burner, and each product page has a product-related case program for EasyLoader.
+
+>2.After downloading the software, double-click to run the application, connect the M5 device to the computer via the data cable, select the port parameters, and click **"Burn"** to start burning.
+
+!>3.The CP210X (USB driver) needs to be installed before the EasyLoader is burned. [Click here to view the driver installation tutorial](en/related_documents/establish_serial_connection)
+
+## Example
+
+### 1. Arduino IDE
+
+*The below code is incomplete(just for usage). If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/ADC/Arduino/ADC_ADS1100).*
+
+```arduino
+#include <M5Stack.h>
+#include <Wire.h>
+#include "ADS1100.h"
+
+#define ADS1100_DEFAULT_ADDRESS 0x48
+
+// declaration
+byte error;
+int8_t address;
+
+//new a object
+ADS1100 ads;
+
+// initialization
+M5.begin(true, false, false);
+ads.getAddr_ADS1100(ADS1100_DEFAULT_ADDRESS);// 0x48, 1001 000 (ADDR = GND)
+ads.setGain(GAIN_ONE);          // 1x gain(default)
+ads.setMode(MODE_CONTIN);       // Continuous conversion mode (default)
+ads.setRate(RATE_8);            // 8SPS (default)
+ads.setOSMode(OSMODE_SINGLE);   // Set to start a single-conversion
+ads.begin();
+
+// read data
+address = ads.ads_i2cAddress;
+Wire.beginTransmission(address);
+Wire.endTransmission();
+ads.Measure_Differential();
+```
+
+### 2. UIFlow
+
+*If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/ADC/UIFlow).*
+
+<img src="assets/img/product_pics/unit/unit_example/ADC/example_unit_adc_01.png">
+
+
+

docs/en/unit/dc_motor.md

@@ -0,0 +1,93 @@
+# Unit DC MOTOR {docsify-ignore-all}
+
+<img src="assets/img/product_pics/unit/acc/acc_01.jpg" width="30%" height="30%"><img src="assets/img/product_pics/unit/acc/acc_02.jpg" width="30%" height="30%">
+
+***
+
+:memo:**[Description](#Description)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:octocat:**[Example](#Example)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :electric_plug:**[Schematic](#Schematic)** &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-ADC-Unit-16-Bit-I2C-GROVE-ADS1100-Module-0V-to-12V-analog-to-digital/3226069_32946953374.html?spm=a2g1x.12024536.productList_5885013.pic_7)**
+
+## Description
+
+This N20 motor is has a 5V supply voltage and comes complete with a built-in metal gearbox. The output shaft has a rotational speed of 60 RPM (no load), and a load RPM of 48. These are also the same motors we use in our BALA robot car and have a nice high build quality feel to them. Specifications can be seen below.
+
+
+
+### Product Features
+
+- single-direction rotation
+
+## Include
+
+- 1x ADC unit
+- 1x GROVE Cable
+- 1x HT3.96 Male Socket(2 pins)
+
+## Application
+
+- Automation
+- Vibration motor
+
+
+
+## Dcumentation
+
+  
+## Schematic
+<img src="assets/img/product_pics/unit/dc_motor/dc_motor_04.jpg">
+
+
+## EasyLoader
+
+<img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/EasyLoader_logo.png" width="100px" style="margin-top:20px">
+
+<a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/Unit/EasyLoader_ADC.exe"><button type="button" class="btn btn-primary">click to download EasyLoader</button></a>
+
+>1.EasyLoader is a simple and fast program burner, and each product page has a product-related case program for EasyLoader.
+
+>2.After downloading the software, double-click to run the application, connect the M5 device to the computer via the data cable, select the port parameters, and click **"Burn"** to start burning.
+
+!>3.The CP210X (USB driver) needs to be installed before the EasyLoader is burned. [Click here to view the driver installation tutorial](en/related_documents/establish_serial_connection)
+
+## Example
+
+### 1. Arduino IDE
+
+*The below code is incomplete(just for usage). If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/ADC/Arduino/ADC_ADS1100).*
+
+```arduino
+#include <M5Stack.h>
+#include <Wire.h>
+#include "ADS1100.h"
+
+#define ADS1100_DEFAULT_ADDRESS 0x48
+
+// declaration
+byte error;
+int8_t address;
+
+//new a object
+ADS1100 ads;
+
+// initialization
+M5.begin(true, false, false);
+ads.getAddr_ADS1100(ADS1100_DEFAULT_ADDRESS);// 0x48, 1001 000 (ADDR = GND)
+ads.setGain(GAIN_ONE);          // 1x gain(default)
+ads.setMode(MODE_CONTIN);       // Continuous conversion mode (default)
+ads.setRate(RATE_8);            // 8SPS (default)
+ads.setOSMode(OSMODE_SINGLE);   // Set to start a single-conversion
+ads.begin();
+
+// read data
+address = ads.ads_i2cAddress;
+Wire.beginTransmission(address);
+Wire.endTransmission();
+ads.Measure_Differential();
+```
+
+### 2. UIFlow
+
+*If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/ADC/UIFlow).*
+
+<img src="assets/img/product_pics/unit/unit_example/ADC/example_unit_adc_01.png">
+
+

docs/en/unit/finger.md

@@ -8,7 +8,7 @@
 
 ## Description
 
-**FINGER** Unit is a fingerprint sensor. This all-in-one fingerprint sensor makes fingerprint adding,verification,mananging super simple.
+**FINGER** Unit is a fingerprint sensor with FPC1020A inside. This all-in-one fingerprint sensor makes fingerprint adding,verification,mananging super simple.
 
 Uart protocol, Compact size and ultra-low power consumption makes it very attractive to use around M5Stack series product.  it performs fast fingerprint matching with highest security level and optimal user convenience. You can program to set the fingerprint recognition comparison level and different security level . if you ever consider secure your project with biometrics,don't forget to include this M5unit **FINGER**.
 
@@ -50,6 +50,10 @@ UART settings:
 
 - **[FINGER communication protocol](https://github.com/m5stack/M5-Schematic/blob/master/Units/finger/biovo_fingerprint_Protocol_en.DOC)**
 
+- **[FPC1020 Datasheet](http://www.shenzhen2u.com/doc/Module/Fingerprint/710-FPC1020_PB3_Product-Specification.pdf)**
+
+
+
 ## Example
 
 ### 1. Arduino IDE

docs/en/unit/op90.md

@@ -0,0 +1,95 @@
+# Unit OP 90 {docsify-ignore-all}
+
+<img src="assets/img/product_pics/unit/acc/acc_01.jpg" width="30%" height="30%"><img src="assets/img/product_pics/unit/acc/acc_02.jpg" width="30%" height="30%">
+
+***
+
+:memo:**[Description](#Description)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:octocat:**[Example](#Example)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :electric_plug:**[Schematic](#Schematic)** &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-ADC-Unit-16-Bit-I2C-GROVE-ADS1100-Module-0V-to-12V-analog-to-digital/3226069_32946953374.html?spm=a2g1x.12024536.productList_5885013.pic_7)**
+
+## Description
+
+OP.90 and OP.180 are two limit switches with different orientation placement.
+<br>
+They are used for controlling machinery as part of a control system, as a safety interlock, or to count objects passing a point.A limit switch is an electromechanical device that consists of an actuator mechanically linked to a set of contacts. When an object comes into contact with the actuator, the device operates the contacts to make or break an electrical connection
+<br>
+The actuator of this Unit is consist of a pair of IR part, emitter side and receiver side. The IR emitter will keep sending IR wave while the receiver will keep detecting the IR wave.  The IR is directly emitted from one side to another side, so if there's no object in between, the receiver side would get the IR signal. This is how it detecting a break an electrical connection. 
+
+
+
+### Product Features
+
+- Horizontal/vertical
+- IR limit switch 
+
+## Include
+
+- 1x ADC unit
+- 1x GROVE Cable
+- 1x HT3.96 Male Socket(2 pins)
+
+## Application
+
+- Door switch
+- machinery control 
+
+
+## Dcumentation
+
+  
+## Schematic
+<img src="assets/img/product_pics/unit/op90/op90_04.jpg">
+
+
+## EasyLoader
+
+<img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/EasyLoader_logo.png" width="100px" style="margin-top:20px">
+
+<a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/Unit/EasyLoader_ADC.exe"><button type="button" class="btn btn-primary">click to download EasyLoader</button></a>
+
+>1.EasyLoader is a simple and fast program burner, and each product page has a product-related case program for EasyLoader.
+
+>2.After downloading the software, double-click to run the application, connect the M5 device to the computer via the data cable, select the port parameters, and click **"Burn"** to start burning.
+
+!>3.The CP210X (USB driver) needs to be installed before the EasyLoader is burned. [Click here to view the driver installation tutorial](en/related_documents/establish_serial_connection)
+
+## Example
+
+### 1. Arduino IDE
+
+*The below code is incomplete(just for usage). If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/ADC/Arduino/ADC_ADS1100).*
+
+```arduino
+#include <M5Stack.h>
+#include <Wire.h>
+#include "ADS1100.h"
+
+#define ADS1100_DEFAULT_ADDRESS 0x48
+
+// declaration
+byte error;
+int8_t address;
+
+//new a object
+ADS1100 ads;
+
+// initialization
+M5.begin(true, false, false);
+ads.getAddr_ADS1100(ADS1100_DEFAULT_ADDRESS);// 0x48, 1001 000 (ADDR = GND)
+ads.setGain(GAIN_ONE);          // 1x gain(default)
+ads.setMode(MODE_CONTIN);       // Continuous conversion mode (default)
+ads.setRate(RATE_8);            // 8SPS (default)
+ads.setOSMode(OSMODE_SINGLE);   // Set to start a single-conversion
+ads.begin();
+
+// read data
+address = ads.ads_i2cAddress;
+Wire.beginTransmission(address);
+Wire.endTransmission();
+ads.Measure_Differential();
+```
+
+### 2. UIFlow
+
+*If you want the complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/ADC/UIFlow).*
+
+<img src="assets/img/product_pics/unit/unit_example/ADC/example_unit_adc_01.png">