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As of 2025-07-24

TWELITE DIP

Questions about the TWELITE DIP series

This page summarizes questions related to the TWELITE DIP series.

About TWELITE DIP

How to check if it is malfunctioning?

If you can write the firmware, it is possible that it is not malfunctioning; however, if you cannot write the firmware, it is definitely malfunctioning. Please connect to a PC using TWELITE R/R2 and try rewriting the app from the TWELITE STAGE APP.

Extremely Simple! Standard App Writing Procedure

Open the TWELITE STAGE APP
Open 2: App Write > 1: Select from BIN
Select an item starting with App_Twelite_BLUE or App_Twelite_RED and perform the write
(If the write is successful) Open 3: Interactive Mode and confirm that settings can be changed

When you cannot enter Interactive Mode

Interactive Mode uses UART, so settings related to UART may cause it to be unusable. Try initializing the settings with the BPS and AI2 pins left open.

Complete initialization of settings can be done by the following steps:

Write a different TWELITE APP once
Access the Interactive Mode of the different TWELITE APP
Enter R → S to initialize the settings
Write back the original app

By following these steps, you can completely initialize the settings stored in non-volatile memory.

Hardware

Are there recommended pin sockets?

The pin headers of TWELITE DIP BLUE/RED are so-called fine pin headers with a 0.5mm pitch. Therefore, you can use any pin socket compatible with 0.5mm pitch pin headers.

Same Model Pin Socket Used for TWELITE R Series

Current TWELITE R2
- Split Long Pin Socket (for Fine Pins) 1×40 (40P): Cable & Connector Akizuki Denshi Tsusho
Older TWELITE R2 and TWELITE R
- Single Pin Socket (Low Female) 1×14 (14P): Cable & Connector Akizuki Denshi Tsusho

The former tends to fit more firmly.

How to connect to TWELITE R3?

Please wire according to the TWELITE R3 datasheet.

R3 GND #1 -> DIP GND #1/14
R3 TXD #2 -> DIP TX #10
R3 PRG #3 -> DIP PWM3 #7
R3 RXD #4 -> DIP RX #3
R3 RST #5 -> DIP RST #21
R3 VCC #6 -> DIP VCC #28
R3 SET #7 -> DIP DI1 #15

For terminals such as TWELITE CUE that involve sleep mode, communication will not work unless the SET pin is connected. This is because the SET pin is held at a low level during reset to disable sleep before configuration.

Has the board design been changed?

Starting from production in June 2024, the board design has been changed. The 600mil DIP form factor remains unchanged, but the appearance and slight dimensions have been modified, and the pin insertion holes and antenna mounting openings have been slightly expanded.

Change Notice: TWELITE DIP Board Change (20240531)

Firmware writing and wireless communication can be performed as with previous products.

Is it compatible with TWE-Lite Dip sold by Tokyo Cosmos Electric?

TWELITE DIP (BLUE series) is compatible with the TWE-Lite Dip previously sold by Tokyo Cosmos Electric.

However, the firmware version installed at shipment has been updated, and the design changes mentioned above have been applied. Firmware writing and wireless communication can be performed as with that product.

Remote Control App

How to resolve the issue where communication between Parent and Child fails when set to intermittent mode?

Try pulling up the C1/C2 (#23/#25) pins (or connecting them to VCC), or disable these pins. In intermittent mode, these pins are not internally pulled up, which may cause unexpected behavior.

Others

Has the flat matchstick antenna type been discontinued?

Yes. The flat matchstick antenna type TWELITE DIP PCB TWE-L-D(I/P)-P was discontinued in 2019. As a replacement, please consider the combination of the coaxial connector connection type TWE-L-DI-U and the thin antenna MW-A-P2010.