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esp8266-test-boards [2015/10/23 10:49]
drum [Olimex ESP8266-EVB EValuation Board]
esp8266-test-boards [2016/06/16 15:55] (current)
livetelevision [AI-Thinker 'Test Board']
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 ==== AI-Thinker 'Test Board' ==== ==== AI-Thinker 'Test Board' ====
-The AI-Thinker board is an evaluation board with an onboard STC15L204EA microcontroller along with a relay, buttons and LEDs on all GPIOs, a relay, a buzzer, LDR, a socket for NRF240 modules, CH340 USB to Serial converter ​ and DIP switches allowing different IO routing configurations to be setup. ​ A small adapter board connects the normal ESP8266 modules to a pair of 2x4 headers. The board is widely available from a number of Chinese vendors.+The AI-Thinker board is an evaluation board with an onboard STC15L204EA microcontroller along with a relay, buttons and LEDs on all GPIOs, a relay, a buzzer, LDR, a socket for NRF240 modules, CH340 USB to Serial converter ​ and DIP switches allowing different IO routing configurations to be setup. ​ A small adapter board connects the normal ESP8266 modules to a pair of 2x4 headers. The board is widely available from a number of Chinese vendors, sometimes called a Coexistence Module. This is not the cheaper AI-Thinker "​yellow board" (which should have its own entry on this page)
  
 === DIP Switches === === DIP Switches ===
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 This is the right-most switch when the USB port is at top.  Controls routing of some of the IO and signal lines. This is the right-most switch when the USB port is at top.  Controls routing of some of the IO and signal lines.
  
-| **No.** | **Label** ​   | **Function** ​                               +| **No.** | **Label** ​   | **Function** ​                                    ​
-| 1       | GPIO14 ​      ​| ​?                                           +| 1       | GPIO14 ​      ​| ​ON=AC relay controlled by ESP8266 GPIO14 ​        
-| 2       | DL_MCU ​      ​| ​?                                           +| 2       | DL_MCU ​      ​| ​ON=AC relay controlled by MCU                    ​
-| 3       | CH_PD_H ​     | ON=Enable pull up on CH_PD line of ESP8266. | +| 3       | CH_PD_H ​     | ON=Enable pull up on CH_PD line of ESP8266. ​     
-| 4       ​| ​GPIO0_H ​     ​| ​?                                           +| 4       ​| ​GPIO0_L ​     ​| ​ON=Pull ESP8266 GPIO0 down for flashing. ​        
-| 5       ​| ​GPIO15_H ​    | ?                                           +| 5       ​| ​GPIO15_L ​    | ON=Pull ESP8266 GPIO15 down (normal during boot) 
-| 6       ​| ​GPIO2_H ​     | ?                                           ​+| 6       ​| ​GPIO2_L ​     ​| ​ON=Pull ESP8266 GPIO2 down for                 ​| 
- + 
 +===Relay=== 
 +Normally open, it can bridge the two AC terminal connections together. ​ See above for control. ​ High level closes the relay. ​ Handles 3 amps at 35v DC or 3 amps at 250v AC. 
 + 
 +===Buzzer=== 
 +Annoying. ​ Apparently controlled only by MCU? 
 + 
 +===CDS Light Sensor=== 
 +One is installed on the board, connected to the MCU.  Holes for another wired to the ESP8266 ADC are in place but not populated with a sensor presumably because this version breaks out the ADC for independent use. 
 + 
 +===Schematic=== 
 +What is apparently an older version may be found in [[http://​www.esp8266.com/​viewtopic.php?​f=13&​t=480|this thread.]] 
esp8266-test-boards.1445597379.txt.gz · Last modified: 2015/10/23 10:49 by drum