Table of Contents

Jumper T12 Hardware Connections

The following documents the hardware inside the Jumper T12 transmitter

STM32 Connections

GPIOA

Pin Description
0 (ADC_IN_0) Stick RV
1 (ADC_IN_1) Stick RH
2 (ADC_IN_2) Stick LV
3 (ADC_IN_3) Stick LH
4 Audio Out
5 Switch B_H
6 (ADC_IN_6) AUX5 POT
7 Ext Module TX
8 Trainer plug detect
9 USB Vin
10 Int Module TX
11 USB Data-
12 USB Data+
13 SWDIO (???)
14 PCBREV
15 (SPI3 CS) LCD C/S

GPIOB

Pin Description
0 (ADC_IN_8) AUX4 POT
1 LED Green
2 S.Port Update PWR
3 ???
4 ???
5 ???
6 (I2C SCL) EEPROM SCL
7 (I2C SDA) EEPROM SDA
8 Haptic
9 (I2C WP) EEPROM WP
10 (USART_3_TX) Bluetooth Tx
11 (USART_3_RX) Bluetooth Rx
12 (SPI2 CS) SD Card Enable
13 (SPI2 SCK) SD Card SCK
14 (SPI2 MISO) SD Card MISO
15 (SPI2 MOSI) SD Card MOSI

GPIOC

Pin Description
0 (ADC_IN_10) Voltage detect
1 Button 'Trim LHR'
2 Button 'Trim RVU'
3 Button 'Trim RVD'
4 LED Blue
5 LED Red
6 Int Module PWR
7 Heartbeat
8 Trainer PPM In
9 Trainer PPM Out
10 (SPI3 SCK) LCD SCK
11 LCD A0
12 (SPI3 SD) LCD MOSI
13 ???
14 XTAL
15 XTAL

GPIOD

Pin Description
0 Power on
1 Power button press
2 Button 'Exit'
3 Button 'Page'
4 Telemetry Dir
5 Telemetry TX
6 Telemetry RX
7 Button 'Menu'
8 Ext Module Pwr
9 SD Card Detect
10 ???
11 Switch: C_L
12 LCD RST
13 LCD Backlight
14 Switch H
15 Button 'Trim LHL'

GPIOE

Pin Description
0 Switch C_H
1 Switch D_L
2 Switch D_H
3 Button 'Trim RHL'
4 Button 'Trim RHR'
5 Button 'Trim LVU'
6 Button 'Trim LVD'
7 Switch A_L
8 ???
9 Button 'Plus'
10 Button 'Enter'
11 Button 'Minus'
12 Bluetooth Enable
13 Switch A_H
14 Switch F
15 Switch B_L

Externaml PPM Module (Pin 1 at bottom)

Pin Description
1 SPORT
2 GND
3 ???
4 Heartbeat
5 ???

FCC Report

FCCID: 2ANTI-T12