TWELITE BLUE / RED PAL
General
What should I do if I break a pin on the wireless module side?
Unfortunately, we cannot repair it technically.
If the broken pin is one that is not used for writing or application operation, or one side of GND, it can remain broken.
If it is a pin in use, you need to desolder the pin and solder a replacement wire or similar.
How do I use an external power supply?
Please connect a 3.3V level (2.0-3.6V) power supply to any VCC and GND pin.
When connecting TWELITE R2/R3, power is supplied at 3.3V from the VCC / GND of the 7P socket.
What does the output of DIO5 mean?
Before transmission, DIO5 is set to LOW, and before sleep, it is set to HIGH.
What are the differences between the BLUE / RED PAL main unit and the TWELITE DIP?
The following points differ:
- PAL is equipped with a CR2032 battery holder.
- PAL is equipped with the board antenna MW-A-P1934.
- PAL pins are 0.6mm square, so low profile sockets for thin pins are not suitable; standard 0.65mm square pin low profile sockets are appropriate.
- PAL pins are not designed for frequent insertion/removal and are very prone to breaking, so caution is required.
Pin layout, input/output functions, and writable firmware are the same.
Notification PAL
Why is there a delay of 30 seconds to several minutes before lighting?
The Notification PAL (NOTICE PAL) operates intermittently to enable long-term operation with button batteries.
The Parent temporarily holds the lighting request and notifies the Child when the Child periodically queries the Parent.
Therefore, the timing of lighting request reflection depends on the query interval.
The Child of the Notification PAL operates as follows:
- Wake up from sleep
- Query the Parent for the latest control request
- Open the receiver circuit and wait for data from the Parent
- Reflect the received control request to the LED
- Enter sleep state for the duration of the Transmit Interval; data reception is not possible during this time
The Parent does not immediately send commands received via UART to the Child but holds the control request until it receives a query from the Child.
The default query interval (transmit interval) is 60 seconds.
If uplink or downlink packets are lost, you must wait for the next query, so even with a 60-second interval, delays of several minutes may occur.
We recommend increasing the number of retransmissions or shortening the transmit interval as countermeasures.
What are the constraints for external LED connections?
Please first refer to the circuit diagram. The pads for external LED output are directly connected to the outputs of the LED driver PCA9632, and the ratings follow the specifications of this IC.
The voltage is the same as the power supply voltage, and the current can be drawn up to 17mA when the power supply voltage is 3.0 V. However, when drawing large currents, the battery specifications must be considered.
Environment PAL
Why does the data from the Parent differ in length and format from the initial state?
If the data output differs in length and format from what is described in the Parent/Repeater app manual, there may be a problem with the extension board. Please contact us.