Uploaded April 2025 | Updated September 2026, 6 days ago
Frustrated with only two 3 way switches on the RM Pocket? No longer!
In this video I show how to re purpose the rotary pot to a 3 way switch.
🔧 Smart Mod for More Control
The video showcases how to modify the Radiomaster Pocket transmitter to add a third three-position switch, using a rotary potentiometer that is typically underutilized.
📦 Preparation with Backup Unit
Rather than risk damaging his main unit, the creator uses a second radio for experimentation, underlining caution and careful planning before modding.
🧰 Hardware Disassembly and Inspection
The mod starts with opening the device and identifying the rotary pot's pins—3.3V, ground, and signal—which are key to rerouting the input to a new switch.
🔬 Precise Electrical Analysis
Measurements reveal that what’s labeled as 3.3V is actually 5.4k ohms off due to an internal pull-up resistor. The creator validates all lines with a multimeter for accuracy.
🔄 Switch Integration
A center-off three-position switch is wired into the system using resistors (or repurposed potentiometer terminals) to simulate a mid-point voltage, effectively creating a virtual “zero” signal.
🛠️ Smart Resistor Use and Testing
A voltage divider is formed using a 4.7k resistor to mimic the mid position. The old potentiometer is used as a static resistor, demonstrating a resourceful hardware hack.
🕹️ Physical Placement and Flexibility
The new switch can be mounted in various positions; the creator opts to drill a hole near the vent—customizable for user preference.
🔁 Software Calibration in EdgeTX
Since the mid-switch voltage wasn’t exactly zero, the solution involves setting a custom curve in EdgeTX to correct the signal mapping, converting -37 to 0 effectively.
✅ Successful Implementation and Testing
Post-mod, the switch functions perfectly—+100, 0, -100 values on channel 5 allow for seamless gyro control and other applications like aileron/elevator rate control.
🎉 Final Proof and Thanks
The mod is demonstrated in action, showing live channel values and aircraft rate changes. Viewers are thanked for sticking through the DIY journey.
🔗 Please tell me if any of the links provided no longer work!!
🛒 Zorro Switches https://www.tekrc.eu/shop/parts/radiomaster-zorro-3-position-switch-switch-b-and-switch-c/
🛒 RadioMaster Pocket Hall Gimbal Transmitter https://s.click.aliexpress.com/e/_DBpJzqt
👀 Click Here to Subscribe bit.ly/1nformatica
🛠 I buy most of my gear from https://s.click.aliexpress.com/e/_APpCVa You can help me by using these links!
👍 Follow on Facebook facebook.com/1nformatica
💲 If you would like to buy me a coffee: paypal.me/1nformatica
Start Time,Title
00:00,"Intro: What is this Sorcery?"
00:33,"Switch Limitation Explained"
01:06,"Spare Radio Disassembly Begins"
01:38,"Inside the Pocket: Component Focus"
02:09,"Identifying Potentiometer Pins"
02:39,"Electrical Measurements"
03:11,"Voltage Divider Planning"
03:41,"Resistor Configuration Explained"
04:13,"Wiring the New 3-Way Switch"
04:43,"Mounting Switch & Reversible Mod"
05:13,"Testing Functionality with EdgeTX"
05:34,"Software Fix for Midpoint Signal"
05:57,"Curve Setup in EdgeTX"
06:28,"Curve Correction Explained"
07:01,"Final Mixes Setup"
07:22,"Functional Test: All Positions Work"
07:54,"Full Demonstration and Outro"
DISCLAIMER: Unless otherwise stated all products shown in this video have been purchased personally. The description and video may contain links to products which might be affiliate links, so if you click on one of the product links I could receive a small commission. This does not affect the price you pay. If you do purchase through my affiliate link this will help fund future videos, thank you for your support!
#1nformatica
Frustrated with only two 3 way switches on the RM Pocket? No longer!
In this video I show how to re purpose the rotary pot to a 3 way switch.
🔧 Smart Mod for More Control
The video showcases how to modify the Radiomaster Pocket transmitter to add a third three-position switch, using a rotary potentiometer that is typically underutilized.
📦 Preparation with Backup Unit
Rather than risk damaging his main unit, the creator uses a second radio for experimentation, underlining caution and careful planning before modding.
🧰 Hardware Disassembly and Inspection
The mod starts with opening the device and identifying the rotary pot's pins—3.3V, ground, and signal—which are key to rerouting the input to a new switch.
🔬 Precise Electrical Analysis
Measurements reveal that what’s labeled as 3.3V is actually 5.4k ohms off due to an internal pull-up resistor. The creator validates all lines with a multimeter for accuracy.
🔄 Switch Integration
A center-off three-position switch is wired into the system using resistors (or repurposed potentiometer terminals) to simulate a mid-point voltage, effectively creating a virtual “zero” signal.
🛠️ Smart Resistor Use and Testing
A voltage divider is formed using a 4.7k resistor to mimic the mid position. The old potentiometer is used as a static resistor, demonstrating a resourceful hardware hack.
🕹️ Physical Placement and Flexibility
The new switch can be mounted in various positions; the creator opts to drill a hole near the vent—customizable for user preference.
🔁 Software Calibration in EdgeTX
Since the mid-switch voltage wasn’t exactly zero, the solution involves setting a custom curve in EdgeTX to correct the signal mapping, converting -37 to 0 effectively.
✅ Successful Implementation and Testing
Post-mod, the switch functions perfectly—+100, 0, -100 values on channel 5 allow for seamless gyro control and other applications like aileron/elevator rate control.
🎉 Final Proof and Thanks
The mod is demonstrated in action, showing live channel values and aircraft rate changes. Viewers are thanked for sticking through the DIY journey.
🔗 Please tell me if any of the links provided no longer work!!
🛒 Zorro Switches https://www.tekrc.eu/shop/parts/radiomaster-zorro-3-position-switch-switch-b-and-switch-c/
🛒 RadioMaster Pocket Hall Gimbal Transmitter https://s.click.aliexpress.com/e/_DBpJzqt
👀 Click Here to Subscribe bit.ly/1nformatica
🛠 I buy most of my gear from https://s.click.aliexpress.com/e/_APpCVa You can help me by using these links!
👍 Follow on Facebook facebook.com/1nformatica
💲 If you would like to buy me a coffee: paypal.me/1nformatica
Start Time,Title
00:00,"Intro: What is this Sorcery?"
00:33,"Switch Limitation Explained"
01:06,"Spare Radio Disassembly Begins"
01:38,"Inside the Pocket: Component Focus"
02:09,"Identifying Potentiometer Pins"
02:39,"Electrical Measurements"
03:11,"Voltage Divider Planning"
03:41,"Resistor Configuration Explained"
04:13,"Wiring the New 3-Way Switch"
04:43,"Mounting Switch & Reversible Mod"
05:13,"Testing Functionality with EdgeTX"
05:34,"Software Fix for Midpoint Signal"
05:57,"Curve Setup in EdgeTX"
06:28,"Curve Correction Explained"
07:01,"Final Mixes Setup"
07:22,"Functional Test: All Positions Work"
07:54,"Full Demonstration and Outro"
DISCLAIMER: Unless otherwise stated all products shown in this video have been purchased personally. The description and video may contain links to products which might be affiliate links, so if you click on one of the product links I could receive a small commission. This does not affect the price you pay. If you do purchase through my affiliate link this will help fund future videos, thank you for your support!
#1nformatica
