Features

• 6 channel 12 bit ADC with factory calibration (1-2%).
• 5 inputs configurable for +-12V inputs.
• Onboard single channel DAC with buffered output ( 8 + bits).
• Onboard 0.5% precision, 1.25V Max6101 reference.
• Battery connector for battery operation.
• ADC2 channel-0 can be configured to measure battery voltage or local temperature.
• Programming connector.
• Over-the-air (OTA) programming.
• 3 user controlled outputs.
• Wireless communications with Raspberry Pi.
• No use of any Raspberry Pi IOs.
• Compatible with all versions of Raspberry Pi including the Pi Zero W and Pi 400.
• Can communicate with any wifi enabled device on a 2.4Ghz frequency.
• Auto AccessPoint Web page to input network SSID and Password

Specifications

What’s On The Board

Input Output Screw Terminals

TB3 Thermistor Battery Voltage ADC2-ch0 ADC1_ch4 ADC1_ch3

TB2 GND 1.25V Ref ADC1-ch2 ADC1_ch1 ADC1_ch0

TB1 GND DAC GPIO_7 GPIO_18 GPIO_19

Input Configuration Jumpers

Jumper pads JP1, JP4 and JP7 provide means to configure the input attenuation as follows:

(see https://seenov.com/2021/12/15/raspberry-pi-adc-esp32-hat-incredibly-measures-%c2%b112v-with-great-accuracy/ for more details)

Dimensions