The digital illuminometer comprises an integrated light sensor, OLED display, and a cap-touch keypad. It can be used to monitor the lux value of a variety of lighting conditions. The OLED display method can be controlled with the touch key input, while the LED brightness also can be changed as a function of ambient light changes.

Optimized for handheld applications, this design incorporates a microcontroller, which with its analog support, can simply implement USB charging of a Li-ion battery. Voltage and current can be monitored and controlled with real-time feedback, while the charging mode can be adjusted as required.

System Benefits:

  • Four lux sensitivity ranges are provided automatically, LED brightness also can be changed
  • MCU-based lithium battery management, which includes pre-charging, CC, CV charging mode, overcurrent, overvoltage, and overheating protection



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4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 CN157 CN157 CN157 LDO LDO LDO Light Sensor Light Sensor Light Sensor Diode -Schottky Sheet.18 Sheet.19 Sheet.20 Sheet.21 Sheet.22 Sheet.23 Sheet.24 Ground (earth) Sheet.26 Sheet.27 Sheet.28 Sheet.29 Resistor - Fixed Battery.27 Sheet.111 Sheet.112 Sheet.113 OLED Sheet.116 Label Text 10pt.160 (128*64) (128*64) Sheet.118 Sheet.119 Sheet.120 Sheet.121 Sheet.122 Sheet.123 Sheet.124 Sheet.125 Sheet.126 Sheet.127 Sheet.128 Sheet.129 Sheet.130 Sheet.131 Sheet.132 Sheet.133 Sheet.134 Sheet.135 Sheet.136 Sheet.137 Sheet.138 Sheet.139 Sheet.140 Sheet.141 Sheet.142 USB Plug Sheet.144 Sheet.145 Sheet.146 Sheet.147 Sheet.148 Vcc Battery/ Temp/Monitor Vcc Battery/ Temp/Monitor Vcc Battery/ Temp/Monitor LC Filter LC Filter LC Filter P-Channel MOSFET.50 Sheet.51 Sheet.52 Sheet.53 Sheet.54 Sheet.55 Sheet.56 Sheet.57 Sheet.58 Sheet.59 Sheet.60 Sheet.61 Sheet.62 Sheet.63 Sheet.64 Sheet.65 Connect.46 Sheet.67 Sheet.68 N-Channel MOSFET Sheet.70 Sheet.71 Sheet.72 Sheet.73 Sheet.74 Sheet.75 Sheet.76 Sheet.77 Sheet.78 Sheet.79 Sheet.80 Sheet.81 Sheet.82 Sheet.83 Connect.50 Sheet.85 Sheet.86 Sheet.87 Sheet.154 Sheet.155 Connector 1.167 Sheet.157 Sheet.158 Sheet.159 Sheet.160 Connector 1.167.161 Sheet.162 Sheet.163 Sheet.164 Connector 1.167.165 Sheet.166 P-Channel MOSFET Sheet.32 Sheet.33 Sheet.34 Sheet.35 Sheet.36 Sheet.37 Sheet.38 Sheet.39 Sheet.40 Sheet.41 Sheet.42 Sheet.43 Sheet.44 Sheet.45 Sheet.46 Connect.46 Sheet.48 Sheet.49 Sheet.170 Sheet.171 Sheet.172 Sheet.173 Sheet.174 Sheet.175 Sheet.176 Sheet.177 Connector 1.167.178 Sheet.179 Sheet.180 Sheet.181 Sheet.182 Connector 1.167.183 Sheet.184 Connector 1.167.185 Sheet.186 Sheet.187 3.3V 3.3V 3.3V 5.0V 5.0V 5.0V Sheet.191 Sheet.192 Sheet.193 Sheet.194 Sheet.195 Sheet.196 USB/5V Power USB/5V Power USB/5V Power Connector 1.167.232 Touch Key Touch Key Touch Key Touch Key.235 Sheet.236 Sheet.237 Sheet.238 Sheet.239 Sheet.240 Sheet.241 Sheet.242 Sheet.243 Sheet.244 Sheet.245 MCU MCU MCU PWM PWM PWM GPIO GPIO GPIO 16-bit ADC 16-bit ADC 16-bit ADC OPA OPA OPA IRQ IRQ IRQ I2C I2C I2C CTSU CTSU CTSU
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