Brick electronics · offline connection planning
Will one PF remote command move the wrong model?
Map Power Functions receiver channels and red/blue outputs, distinguish independent groups from intentional broadcast, and print an eight-address control map.
Your setup and observations
A Power Functions receiver channel is shared by its red and blue outputs. Two receivers using the same channel/output address hear the same command; decide whether that sharing is intentional.
Work through a concrete example
Example: Receiver 1 channel 1 red = Train A; Receiver 2 channel 1 red = Train B. They share one broadcast address despite different intended jobs. Move the second job to blue on channel 1, or intentionally give both red outputs the same group label when shared commands are wanted.
Eight command addresses, not eight guaranteed working motors
Official LEGO guidance describes four selectable channels and two output controls per channel. The planner maps channel × red/blue only. It does not validate power, receiver load, motor count, battery condition, infrared reach or simultaneous handset operation.
A collision is about independent intent
By default Receiver 1 and Receiver 2 both put different train groups on channel 1 red, so the plan conflicts. Move the second group to channel 1 blue to declare two separate addresses. Give both red outputs the same group name only when you intentionally want the same commands broadcast to them.
One receiver has one channel setting
Both output colors on one receiver use that receiver’s channel; they cannot each select a different channel. A handset selects one channel at a time. Several remotes on different channels can supply controls simultaneously, but this worksheet does not model operator actions or timing.
Sharing an address is not mechanically synchronized motion
Matching group labels on the same address mean deliberate command sharing. They do not establish equal motor speed, direction, torque or safe coupled movement. A group appearing on different addresses still needs separate commands; repeating its name does not electrically or wirelessly link those addresses.
Keep the declared area complete
The worksheet accepts up to six receivers in one shared IR-control area. More than four receivers can intentionally share addresses; four channels is not a four-receiver limit. If your area has more than six receivers, this finite worksheet cannot rule out omitted collisions. Group names ignore case and surrounding spaces; blank outputs are unused. This PF map is not Powered Up BLE pairing, older train IR, or a third-party RF addressing map.