2 layers141.8 × 151.3 mmRadioNoobEIectron/RadioNoobAn Open Source Radio Transmitter Project189 parts8
4 layers12.9 × 13.6 mmExpressLRS Nano ReceiverEIectron/ExpressLRS-Nano-ReceiverExpressLRS Nano Receiver34 parts2
4 layers29 × 29 mmBATF7EIectron/BATF7-Brushed-FCSTM32F722RET Based brushed flight controller board90 parts