| ??? 05/04/05 17:44 Modified: 05/04/05 17:46 Read: times |
#92909 - to Prahalad Responding to: ???'s previous message |
Hi Prahalad,
Got your ideas. Well I hade done like this: Vss, ---/////////---- Contrast pin Variable end also grounded I read the datasheet of JHD 164D from Payam's user pages.(Thanks, Payam, it was very handy). It has been said that contrast pin can have a minimum value of Vdd(minus)13.5 volts, and the maximum of zero volts. Name____________________symbol___Min_________Max Supply Voltage for logic_______Vdd____-0.3________7.0 V Supply Voltage for LCD_______V5 _____Vdd-13.5_____0 V Does this imply that maximum contrast is obtained when contrast pin is grounded ? Prahlad J. Purohit said:
Are you sure you did what you mentioned here. The right way to do it is. 5k/10k mutiturn Vss[0V]--////////------Vcc[5V] Pin1 ^ Pin2 | | PIN3 [Contrast] Well, if the above arrangement is made, Prahalad, I am afraid that the contrast pin can go upto Vcc. Doesnt this damage the module? Regards, Vignesh. |
| Topic | Author | Date |
| datasheet for lcd | 01/01/70 00:00 | |
| datasheet | 01/01/70 00:00 | |
| To Marjan! | 01/01/70 00:00 | |
| is it Mehdi? | 01/01/70 00:00 | |
| Contrast Control. | 01/01/70 00:00 | |
| Code for the LCD | 01/01/70 00:00 | |
| please read as: | 01/01/70 00:00 | |
| LCD initialisation is wrong | 01/01/70 00:00 | |
| I have got it, but.. | 01/01/70 00:00 | |
| READ / WRITE sequence | 01/01/70 00:00 | |
thanks Leo | 01/01/70 00:00 | |
| One more hint. | 01/01/70 00:00 | |
| to Prahalad | 01/01/70 00:00 | |
| LCD Contrast - Vignesh | 01/01/70 00:00 | |
| oh, fine.. | 01/01/70 00:00 | |
| Oriole LCD Modules | 01/01/70 00:00 | |
| Re: Oriole ODM. | 01/01/70 00:00 | |
| quick check at the shop before buying | 01/01/70 00:00 | |
| Yes,it is! | 01/01/70 00:00 | |
| Testing : Passed | 01/01/70 00:00 | |
| to Mehdi with love | 01/01/70 00:00 | |
| Thanks Vignesh ! | 01/01/70 00:00 | |
| Oh with pleasure.. | 01/01/70 00:00 | |
| The original datasheet | 01/01/70 00:00 | |
| damaged LCD | 01/01/70 00:00 |