Node to drive a MC14511B 7 Segment IC.

Infrared CO2 Sonsor Module (NDIR) Range: 0~2000/5000/10000ppm (optional) Accuracy: +/- (50ppm +5% reading value) Detection Gas: CO2 Working voltage 4.5 - 5.5V DC Only Boards with multiple UART connections (e.g. Arduino MEGA) runn

Random Node only for WEMOS-D1_Mini Board. Generates pseudo-random numbers in range [0; 1). Uses a linear congruential generator algorithm.

TF Card Soundplayer over Serial Communication. The Node use Soft-UART https://wiki.dfrobot.com/DFPlayer_Mini_SKU_DFR0299