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Yeah...Strange, always low on A but input Not... A build a new electronic assembly but with 2 x 74ls245 (so, not HCT) This don't correct the problem but, if I Add a voltage regulator on 5V input (to have so, less 5V to powerOn the 2 DMD) it work. So the couple of 2x74LS245 + voltage regulator seems to be work for me. I say 'seems' because I tested on played on my real Pinball but only 10mn (Too cold on my shed)
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Hi ! Strange...I make a quick electronic assembly with 2 74HCT245 as you say. All Signals passed through (except pin 4 and 16, which are directly connect because they'r ground). It's work..but... it's missing 1 line out of 2... Strange....
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Thks
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Hi ! With 5V to VCC and DIR (pin1 and 20) And GND to Ground and /OE (pin10 and Pin19) B1 to B8 is input & A1 to A8 is output Or A1 to A8 is input & B1 to B8 is output ?
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Hi ! If I MOD, I Add 2 x 74LS245 before HUB75 Input as you say, it will be enough ? I have a older Amiga 1200 PCB that have a 74LS245 (but bot 74HCT245)
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Mp send to UncleSash Question but, I'have the 3.1Board version Maybe is they are a way to 'mod' my 3.1version with a 74LS245 or 74HCT245, make some solder and modification do not scare me Are they link to v3.1 and v2.0 schématic available on the net ? If I juste cut somme trace and Add a 74HCT245 with some wire... no problem. Second option is changing directly on DMD board but I can't find package information (so, dimension) of my SUM 74HC245T D1409AFP81
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Hi ! So... communication with the seller is impossible... he does not care about you. So, if you want to buy it on alyexpress, avoid the seller : Ever Shine Digital Advertising Store (https://evershine.fr.aliexpress.com/store/103659) Just an advice, don't buy with them. Now, I need to return to the original DMD 'orange' or find, in france, somebdoy wan and want to change the 74ls chipset...
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Hi ! After a lot a tests, Only 3.3V work a little (bugs and bug and bug... all the time, color bug) but it's realy random situation, a lot of color pixel issue when playing. Communication whith the seller is... difficult.
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Hi ! After a lot a tests, Only 3.3V work but it's realy random situation, a lot of color pixel issue when playing. Communication whith the seller is... difficult.
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Hi ! After a lot a tests, Only 3.3V work but it's realy random situation, a lot of color pixel issue when playing. Communication whith the seller is... difficult.
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?? The seller tell me old me the opposite I have more confidence in you, It's certain. I will see with the seller if he can have me recent dmd 1/16, but he's not technical Tell him about 74HC245T, 74HCT245 ...it's like...recite a poem to a cow. It's coool but... it does not help much. Ok, Thks
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Hi Just a last question. We are agree a 1/32 DMD don't work with M14STM32 F4 and last version of pin2dmd (2.49) !
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Yes, if I remember the HCT chip are used because they are faster in I/O But, I don't have the good H/W to desoldering and re- soldering this. I can try but... not sure about the resultat and especially, I don't have a 74HCT245 in cms. I have a lot in normal socket ;), but not in CMS. I can of course order this, but it's very difficult if I don't have exactly a good a soldering station with his tools for cms. But, finaly, If it's work good with 3.3V... so...I can use 3.3V of my atx power suply.
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Hi Yes or change the 74HC245T by 74HC245 But notre easy if we don't have hardware to do this. Thks for your reply, i will try some h/w configuration like you Say. See you
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PCB : P2.5(2020)-16S-V1.0 UR1, UG1, UB1, UR2, UG2, UB2,UR3,UG3,UR4,UG4,UB4, UR5, UG5, UB5, UR6, UG6, UB6,UR7,UG7,UR8,UG8,UB8 : CHIPONE ICN2026DP C CF 1J15.1 U1, U2, U3 : SUM 74HC245T D1409AFP81 a couple of 16 : 4953 4K2501 x2 (below C29) : DP74HC138 4J2101 cx3, cx4 : 220ùF 10V a lot of capacitor cmd : C1->C29 (not measured ) a lot of resistor cmd : mark 29B (not measured but normaly 1.96Kohm) I thinks, it's all