So as Reciva has now closed, the Logik IR100 and other Reciva based radios will no longer work without installing Sharpfin and modifying it. Great, but I want a newer system with more hardware features and a powerful CPU… Step up Raspberry Pi.
However, as I am sure a lot of you have noticed – The LCD doesn’t conform to the HD44780U wiring scheme. Alas… I think I may have at least worked that one out and managed to get it working with an I2C backpack, though right now the backlight doesn’t seem to turn on.
Pinout for the display vs HD44780U
| HD44780U | DAB 608 LCD | |||
| 1 | GND | —> | 2 | GND |
| 2 | VDD | —> | 5 | VDD |
| 3 | V0 (Contrast) | —> | 4 | VA |
| 4 | RS | —> | 3 | RS |
| 5 | R/W | —> | 6 | GND |
| 6 | E | —> | 1 | E |
| 7 | DB0 | —> | 9 | N/C – DB0 |
| 8 | DB1 | —> | 10 | N/C – DB1 |
| 9 | DB2 | —> | 11 | N/C – DB2 |
| 10 | DB3 | —> | 12 | N/C – DB3 |
| 11 | DB4 | —> | 13 | DB4 |
| 12 | DB5 | —> | 14 | DB5 |
| 13 | DB6 | —> | 15 | DB6 |
| 14 | DB7 | —> | 16 | DB7 |
| 15 | LED | —> | 7 | LED |
| 16 | VDD | —> | 8 | VDD |
Thanks for the useful information. I am currently exchanging the reciva module with an ESP32 and reusing the main 608 PCB of the radio. The display is powered with VDD 5V. If you Power with lower voltage, then the backlight might not work. The backlight is controlled with the LED pin. I think the 608 PCB has some transistors to pull this pin to GND.
My backlight is working, but I think it is in bad shape as the brightness is very low (The issue was already with the reciva module).
This is great to know. I still haven’t got around to rebuilding mine with a raspberry pi yet but I shall check out those transistors and see if I can figure it out with my backpack!